CN113735544A - Gel material and mine filling system - Google Patents
Gel material and mine filling system Download PDFInfo
- Publication number
- CN113735544A CN113735544A CN202111009086.0A CN202111009086A CN113735544A CN 113735544 A CN113735544 A CN 113735544A CN 202111009086 A CN202111009086 A CN 202111009086A CN 113735544 A CN113735544 A CN 113735544A
- Authority
- CN
- China
- Prior art keywords
- tailings
- paste
- concentration
- parts
- gel material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 102
- 238000011049 filling Methods 0.000 title claims abstract description 77
- 238000000227 grinding Methods 0.000 claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 28
- 239000010881 fly ash Substances 0.000 claims abstract description 22
- 239000002910 solid waste Substances 0.000 claims abstract description 17
- 238000009837 dry grinding Methods 0.000 claims abstract description 12
- 239000010440 gypsum Substances 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 112
- 238000003860 storage Methods 0.000 claims description 72
- 238000002156 mixing Methods 0.000 claims description 62
- 238000003825 pressing Methods 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 25
- 238000005303 weighing Methods 0.000 claims description 20
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 230000002708 enhancing effect Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052934 alunite Inorganic materials 0.000 claims description 6
- 239000010424 alunite Substances 0.000 claims description 6
- 235000011132 calcium sulphate Nutrition 0.000 claims description 6
- 239000010446 mirabilite Substances 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 5
- 239000001175 calcium sulphate Substances 0.000 claims description 3
- 239000013072 incoming material Substances 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 2
- 238000004898 kneading Methods 0.000 claims 2
- 230000008719 thickening Effects 0.000 claims 1
- 239000010878 waste rock Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 12
- 239000004568 cement Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- 238000005065 mining Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000002562 thickening agent Substances 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 6
- 239000012258 stirred mixture Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a gel material and a mine filling system, wherein the gel material is obtained by dry grinding of industrial solid wastes, clinker and grinding aid; the industrial solid waste comprises tailings, furnace slag, fly ash and desulfurized gypsum, wherein the tailings, the furnace slag, the fly ash and the desulfurized gypsum respectively account for 25-50 parts, 10-20 parts and 5 parts of the gel material in parts by weight; the slag is coal slag of a thermal power plant or steel slag produced by a steel mill; the clinker accounts for 20-40 parts by weight of the gel material; the grinding aid accounts for 0.5-1 part of the gel material by weight. The industrial solid waste raw materials such as tailings and the like are adopted for preparation, so that the raw materials can be obtained locally in a mine, and compared with the conventional mode of adopting cement as a gel material, the cost of mine filling is greatly saved in material cost and preparation process. The gel material is used for mine filling, the utilization rate of tailings is high, and social and environmental benefits are remarkable.
Description
Technical Field
The invention relates to the field of comprehensive utilization of tailing resources, in particular to a gel material preparation and mine filling system.
Background
The mining industry provides raw materials and causes different degrees of damage to the natural environment, and in recent years, the demand for mineral products is increasing, and the problems of waste discharge caused by mining and environmental damage become global and serious problems. The mining, processing and consuming processes of mineral products all destroy the ecological environment. The barren rock that the mining produced can take place the morals and manners after being corroded by wind, the water erosion, and the pollutant that forms can get into surface water and cause water pollution, and the barren rock is stacked and can be destroyed regional vegetation of barren rock, and in addition, the barren rock can take place the raise dust under the effect of wind, to influencing ecological environment. Tailings from mining are discharged into rivers, lakes or oceans, which can cause pollution to water in rivers and lakes and influence ecological balance. The mining of the mine can cause surface collapse or mountain collapse, and the rock mass and the stone sand which can cause the collapse of the mountain collapse or the surface collapse can damage the well and the roadway and damage the ground structures, and can cause casualties and obstruct normal traffic in severe cases. Drainage is the main water control means of the mine, the generation of the mine pit can change the natural underground water flow field, when the supply quantity of the underground water unit is less than the drainage quantity of the mine pit, the normal flow field relation of the underground water in the mine area can be destroyed, and then the underground water level is reduced, and the water resource exhaustion can be caused in serious cases.
The filling mining method aims to utilize a filling body to perform ground pressure management, inhibit surface subsidence and surrounding rock caving, and protect ecological environment balance of a mining site. From the material point of view, the filling mining method can be divided into 3 types, namely a cemented filling method, a water sand filling method and a dry filling method.
The gel material of the existing cemented filling method is filled by taking cement as the gel material, and the mine filling cost is high due to the large material consumption of the gel material.
Disclosure of Invention
Based on the problems, the invention provides a gel material preparation and filling system, wherein the gel material adopts tailings as a main raw material and is used for reducing the filling cost.
In order to achieve the above object, in a first aspect, the present invention provides a gel material obtained by dry grinding industrial solid wastes, clinker and grinding aid; the industrial solid waste comprises tailings, furnace slag, fly ash and desulfurized gypsum, wherein the tailings, the furnace slag and the fly ash respectively account for 25-50 parts, 10-20 parts and 5 parts of the gel material in parts by weight; the slag is coal slag of a thermal power plant or steel slag produced by a steel mill;
the clinker accounts for 20-40 parts by weight of the gel material;
the grinding aid accounts for 0.5-1 part of the gel material by weight.
Preferably, the weight of the silicon dioxide in the tailings accounts for more than 50% of the weight of the tailings
Preferably, the tailings are obtained by drying tailings raw materials.
Preferably, the tailings are obtained by drying a tailing raw material and lignite accounting for 1 part by weight of the gel material.
Preferably, the gel material is used for forming a paste, and the grinding aid comprises a grinding aid carrier, a paste early-stage coagulation strength enhancing material and a specific surface area improving material;
the early-stage coagulation strength enhancing material of the paste comprises triethanolamine, mirabilite, anhydrous sodium sulphate, alunite and calcium sulphate, the specific surface area enhancing material comprises sodium tripolyphosphate, and the grinding aid carrier comprises fly ash;
the grinding aid comprises, by weight, 10-60 parts of fly ash, 5-10 parts of triethanolamine, 5-15 parts of mirabilite, 5-15 parts of anhydrous sodium sulphate, 10-20 parts of alunite and 5-10 parts of calcium sulfate, and 10-20 parts of sodium tripolyphosphate.
Further, the specific surface area of the gel material after dry grinding is 450m2More than kg.
In a second aspect, the present invention provides a gel material preparation system for preparing any one of the above gel materials, the preparation system comprising:
the metering equipment comprises metering devices which are respectively used for metering the tailings, the furnace slag, the fly ash, the clinker and the grinding aid;
the ball mill is used for mixing and dry-grinding the tailings, the furnace slag, the fly ash, the clinker and the grinding aid which are weighed by the metering devices;
and the powder concentrator is used for grading the particle size after dry grinding to sort out the gel material meeting the requirement of the surface classifier, and conveying the unqualified gel material to the ball mill.
Preferably, the preparation system comprises a hot blast stove communicated with the ball mill to supply heat to the ball mill.
In a third aspect, the present invention provides a mine filling system comprising:
mixing and stirring one or two of coarse aggregate and filter-pressed tailings, concentrated tailings and the gel material according to any one of claims 1 to 3 to obtain paste, wherein the paste is stored in a storage device; and conveying the paste downhole through a stuffing device.
The mine filling system comprises a control device, wherein the control device is used for obtaining the concentration of the paste in the storage device, and adjusting the weight of the coarse aggregate or the weight of the tailings after filter pressing conveyed to the mixing and stirring process according to the concentration so as to adjust the concentration of the paste and keep the concentration of the paste at 75% -82%.
Preferably, the mixing and stirring comprises blending and stirring and strong stirring, wherein the strong stirring is used for converting the flow state of the blending and stirring mixture, and the uniform paste is formed by controlling the stirring speed and the stirring force;
the mine filling system includes:
the metering equipment is respectively used for a plurality of metering devices for metering supplied materials.
The storage device comprises a storage bin for storing the paste after strong stirring, and the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin; wherein, the concentration meter sets up in the entry of storage silo.
The filling device is used for conveying the paste to the underground of the mine through a pipeline by a pump so as to fill the paste;
the control device is electrically connected with the metering device and the concentration meter; and the weight part of the paste is used for controlling the increase or decrease of the weighing of the coarse aggregate or the tailings after filter pressing based on the concentration of the paste obtained by the concentration meter.
Preferably, the mine filling system is arranged in a mine, and comprises a concentration device and a filter pressing device;
the concentration device is used for concentrating mine tailings so as to convey the concentrated tailings to the mixing and stirring device and/or the filter pressing device under the control of the control device;
the filter pressing device is used for concentrating and filter pressing the tailings with low concentration into concentrated filter pressing tailings with high concentration; wherein the concentration of the concentrated filter-pressed tailings is not lower than 75%;
the control device is configured to add or reduce the tailings after filter pressing and send the tailings into the mixing and stirring device when the paste concentration of the storage bin is smaller than or larger than a preset concentration, so that the concentration of the paste in the storage bin is preferably 75% -82%, and the control device is configured to correspondingly control to reduce the first part by weight of the first tailings to be sent to the mixing and stirring device when the first part by weight of the concentrated filter pressing tailings is sent to the mixing and stirring device.
Preferably, the crushing device is used for crushing the filter-pressing tailings, and the crushed tailings are sent to the blending and stirring device through the metering device. In a fourth aspect, the present invention provides a mine filling system comprising:
the blending and stirring device is used for stirring 85-95 parts by weight of second tailings and 5-15 parts by weight of gel materials in the blending and stirring device so as to fully mix the coarse aggregate, the second tailings and the gel materials; the second tailings are tailings easy to concentrate, the concentration of the concentrated tailings is higher than 60%, and the second tailings and the gel material are obtained by weighing through a metering device respectively; the blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer;
the strong stirring device is used for converting the flow state of the uniformly mixed and stirred mixture and forming paste with preset concentration by controlling the stirring speed and the stirring force; wherein the predetermined concentration is 75% -82%; the strong stirring device is a two-stage strong stirrer;
the storage device comprises a storage bin for storing the paste after strong stirring, and the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin;
the filling device is used for conveying the paste to the underground of the mine through a pipeline by a pump so as to fill the paste;
the control device is electrically connected with the metering device and the concentration meter; and the metering device is used for controlling the metering device used for weighing the second tailings to increase or decrease the weighed weight parts based on the paste concentration obtained by the concentration meter.
Preferably, the mine filling system comprises a concentration device and a filter pressing device, wherein the concentration device is used for concentrating the tailings with low concentration generated in the mineral separation process, and the filter pressing device filters the concentrated tailings to form filter pressing; wherein, the concentration of the tailings after concentration, filtration and filter pressing is not lower than 75%.
The control device is configured to send the concentrated filter-pressing tailings into the mixing and stirring device when the paste concentration of the storage bin is less than a preset concentration, so that the concentration of the paste in the storage bin is 75% -82%;
the mine filling system is arranged in a mine, and the filter pressing device is used for concentrating tailings of the mine and conveying the concentrated tailings to the uniformly mixing and stirring device under the control of the control device.
In a fifth aspect, the present invention provides a mine filling method, the method comprising:
weighing by a metering device to obtain 10-20 parts by weight of coarse aggregate, 65-75 parts by weight of first tailings and 5-15 parts by weight of gel material, wherein the first tailings are directly obtained from a mine;
a uniformly mixing and stirring step, namely stirring 10-20 parts by weight of coarse aggregate, 65-75 parts by weight of first tailings and 5-15 parts by weight of gel material in a uniformly mixing and stirring device so as to fully mix the coarse aggregate, the first tailings and the gel material; the first tailings are tailings difficult to concentrate, the concentration of the concentrated tailings is lower than 60%, and the coarse aggregate is obtained by crushing solid waste which is discarded by a factory in advance; the blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer;
a strong stirring step, namely converting the flow state of the uniformly mixed and stirred mixture, and forming paste with preset concentration by controlling the stirring speed and the stirring strength; wherein the predetermined concentration is 75% -82%; the strong stirring device is a two-stage strong stirrer;
storing, namely storing the paste after strong stirring in a storage bin, wherein the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin;
a filling step, wherein the paste is conveyed to the underground of the mine through a pipeline by a pump for filling; and
and a control step of controlling a metering device for weighing the first tailings to increase or decrease the weighed weight parts based on the concentration of the paste obtained by the concentration meter.
Preferably, the controlling step further comprises:
when the paste concentration is less than the preset concentration, reducing the weight part of the first tailings, increasing the part of the coarse aggregate, and conveying the coarse aggregate to a uniformly mixing and stirring device for stirring so as to enable the concentration of the paste in the storage bin to be 75% -82%; or
When the paste concentration is higher than the preset concentration, increasing the weight part of the first tailings, reducing the part of the coarse aggregate, and conveying the coarse aggregate to a uniformly mixing and stirring device for stirring so as to enable the concentration of the paste in the storage bin to be 75% -82%;
the mine filling system also comprises an aggregate crusher, wherein the aggregate crusher is used for crushing waste rocks discarded in the mineral processing process into coarse aggregates with the diameter within 20 mm.
In a sixth aspect, the present invention provides a mine filling method, the method comprising:
weighing by using a metering device to obtain 85-95 parts by weight of second tailings and 5-15 parts by weight of gel material, wherein the second tailings are directly obtained from a mine;
a blending and stirring step, namely stirring the second tailings and the gel material in a blending and stirring device so as to fully mix the second tailings and the gel material; the second tailings are tailings easy to concentrate, and the concentration of the concentrated tailings is higher than 60%. The blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer;
and a strong stirring step, namely converting the flow state of the uniformly mixed and stirred mixture, and forming uniform paste by controlling the stirring speed and the stirring strength. The strong stirring device is a two-stage strong stirrer;
storing, namely storing the paste after strong stirring in a storage bin, wherein the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin;
a filling step, wherein the paste is conveyed to the underground of the mine through a pipeline by a pump for filling; and
a control step including:
when the paste concentration is smaller than the preset concentration in the small range, the concentration of the paste in the storage bin is 75% -82% by controlling a thickener to increase the underflow concentration; or when the paste concentration is greater than the preset concentration in a small range, the underflow concentration is reduced by controlling the thickener, so that the concentration of the paste in the storage bin is 75% -82%;
by adopting the technical scheme, the invention can obtain the following technical effects:
according to the gel material provided by the scheme of the invention, the tailings, the slag and the fly ash are used as raw materials for preparation, so that compared with the conventional mode of using cement as the gel material, the cost of mine filling is greatly saved. The method has the advantages that the problems that the ecological damage is caused by tailing accumulation in the tailing pond and the geological collapse is solved, the gel material is prepared by changing waste into valuable, the gel material is used for filling mines, and the tailing utilization rate and the benefit are high.
Drawings
FIG. 1 is a flow chart of the preparation of the gel material of the present invention;
fig. 2 is a schematic diagram of a first filling method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a second filling method according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a third filling method according to an embodiment of the present invention.
Fig. 5 is a schematic view of a mine filling system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper", "lower", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations and positional relationships indicated based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The structure and function of the solution of the present application will now be described in detail with reference to fig. 1 to 4.
The invention provides a gel material for mine filling, which is obtained by dry grinding industrial solid wastes, clinker and grinding aid. The industrial solid waste comprises 25-50 parts of tailings, 10-20 parts of slag, 10-20 parts of fly ash and 5 parts of desulfurized gypsum by weight of the gel material. The clinker accounts for 20-40 parts by weight of the gel material. The grinding aid accounts for 0.5-1 part of the gel material by weight. Compared with the existing cement, the gel material greatly saves the cost.
The tailings include iron tailings, copper tailings and the like, and other tailings. Wherein, the tailings can be directly obtained in a mine. The grinding aid is a powder composite cement grinding aid, and comprises a grinding aid carrier, a paste early-stage coagulation strength enhancing material and a specific surface area improving material. The early-stage coagulation strength enhancing material for the paste comprises triethanolamine, mirabilite, anhydrous sodium sulphate, alunite and calcium sulphate, the specific surface area enhancing material comprises sodium tripolyphosphate, and the grinding aid carrier comprises fly ash. The grinding aid comprises, by weight, 10-60 parts of fly ash, 5-10 parts of triethanolamine, 5-15 parts of mirabilite, 5-15 parts of anhydrous sodium sulphate, 10-20 parts of alunite and 5-10 parts of calcium sulfate, and 10-20 parts of sodium tripolyphosphate.
Wherein the weight of the silicon dioxide in the tailings accounts for more than 50% of the weight of the tailings, and the silicon dioxide is used for enhancing the activity of the gel material so as to enhance the subsequent strength of the gel material.
The industrial solid wastes, the clinker and the grinding aid are compounded, the prepared raw materials are subjected to closed circuit grinding by a ball mill, and the specific surface area is 450m after dry grinding2More than kg.
The effects of the gel material of the present invention are described below in cases 1 to 3.
Case 1, 25% of dry iron tailings, 20% of coal gangue power plant slag, 10% of fly ash, 5% of desulfurized gypsum, 39.5% of clinker and 0.5% of grinding aid, wherein the specific surface area of the mixture is 480m after the mixture is ground and dry-ground2In terms of/kg. According to the determination of the activity index and the fluidity ratio of the slag powder in GB/T18046-2008 appendix A, the activity index of the product reaches 90 d, the activity index of the product reaches 102 after 7d, the fluidity ratio reaches 97%, and the product meets the technical index of the S95 grade in GB/T18046-2008.
Case 2: 30% of dry iron tailings, 20% of coal gangue power plant slag, 10% of fly ash, 5% of desulfurized gypsum, 34.5% of clinker and 0.5% of grinding aid. The specific surface area of the raw materials after mixed grinding and dry grinding is 510m2/kg, the activity index of the product reaches 82 d, the activity index of the product reaches 98 d, the activity index of the product reaches 96% and the fluidity ratio reaches 96% according to the measurement of the activity index and the fluidity ratio of the slag powder in GB/T18046-2008 appendix A, and the technical indexes of the product at the S95 level in GB/T18046-2008 are met.
Case 3: 35% of dry iron tailings, 20% of coal gangue power plant slag, 10% of fly ash, 5% of desulfurized gypsum, 29.5% of clinker and 0.5% of grinding aid. The specific surface area of the raw materials after mixed grinding and dry grinding is 530m2The activity index of the product reaches 80 d, the activity index of the product reaches 96 d, the activity index of the product reaches 28d and the fluidity ratio reaches 95.8 percent according to the measurement of the activity index and the fluidity ratio of the slag powder in GB/T18046 appendix A2008, which accords with the technical index of the S95 grade in GB/T18046-.
The invention further provides a gel material preparation system, which is used for preparing the gel material with reference to fig. 1, and the preparation system comprises a metering device, a ball mill and a powder concentrator. The metering equipment comprises metering devices which are respectively used for metering the tailings, the furnace slag, the fly ash, the clinker and the grinding aid. And weighing the tailings, the furnace slag, the fly ash, the clinker and the grinding aid by the metering devices according to the weight parts in proportion. The metering devices form a metering system, the metering system comprises a data input device, and a user distributes the proportioning proportion and the yield number and the metering system to control each metering device to weigh materials with corresponding weight correspondingly. The metering device may be one of a belt scale, a rotor scale and a screw scale.
In the gel material preparation system, tailings are fed to a mud crusher through a plate feeder, crushed in the mud crusher, conveyed to a dryer through a belt conveyor for drying and storage, or directly conveyed to a ball mill as dry tailings through a metering device. The ball mill is an ultrafine ball mill, and is communicated with the hot blast stove to supply heat to the ball mill, so that the yield of the ball mill is improved, and the energy consumption of the mill is reduced, wherein the heating temperature is 350-500 ℃.
And the ball mill mixes and dry-grinds the tailings, the furnace slag, the fly ash, the clinker and the grinding aid which are weighed by the metering devices, and the qualified gel material is obtained through a powder concentrator, and is stored, bagged, sold and the like. And (4) unqualified gel materials are returned to the ball mill for dry grinding again.
Referring to fig. 2, the present invention provides a mine filling system, which includes a blending and stirring device, a powerful stirring device, a material storage device, a filling device and a control device.
The blending and stirring device is used for stirring 10-20 parts by weight of coarse aggregate, 65-75 parts by weight of first tailings and 5-15 parts by weight of gel material, so that the coarse aggregate, the first tailings and the gel material can be fully mixed. The first tailings are concentrated tailings with the concentration lower than 60%, the coarse aggregate is obtained by crushing solid waste which is discarded in advance in a factory, and the first tailings, the coarse aggregate and the gel material are obtained by weighing through a metering device respectively. The blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer.
The strong stirring device is used for converting the flow state of the uniformly mixed and stirred mixture, and the uniform paste is formed by controlling the stirring speed and the stirring force. Wherein the predetermined concentration of the paste is 75% -82%. The strong stirring device is a two-stage strong stirrer.
The metering equipment is a plurality of metering devices which are respectively used for metering the incoming materials of concentrated tailings, gel materials and coarse aggregates; the storage device comprises a storage bin for storing the paste after strong stirring, and the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and obtaining the concentration of the paste in the storage bin. And the filling device is used for conveying the paste to the underground of the mine through a pipeline by a pump for filling. The control device is electrically connected with the metering device and the concentration meter and is used for controlling the metering device for weighing the first tailings to increase or decrease the weighed weight parts based on the concentration of the paste obtained by the concentration meter.
Wherein, the concentration meter is arranged at the inlet of the storage bin; the paste that comes out from the mixer flows through the concentration meter, can obtain real-time concentration data to can be more timely feedback.
The coarse aggregate is obtained by crushing waste rocks discarded in the mineral processing process of mineral processing equipment arranged on a mine site. In a preferred scheme, the mine filling system further comprises an aggregate crusher, and the aggregate crusher is used for crushing waste rocks discarded in the mineral processing process into coarse aggregates with the diameter within 20 mm. And conveying the crushed coarse aggregate to a coarse aggregate buffer bin through a driving belt.
The mine filling system is arranged in a mine, and the main raw materials of the gel material and the paste are used as raw materials through mine tailings on the mine site and solid wastes discarded in the mineral separation process, so that the preset filling concentration is achieved. Fully using local materials, reducing the production of solid waste garbage of a mine factory and saving the cost of filling a mine.
Referring to fig. 3, the present invention further provides another mine filling system, configured to mix and stir the concentrated tailings, the gel material, the filter-pressed tailings, and the coarse aggregate to obtain a paste, where the paste is stored in a storage device; and conveying the paste downhole through a stuffing device. The mine filling system comprises a control device, wherein the control device is used for obtaining the concentration of the paste in the filling device, and adjusting the weight of the tailings conveyed to the mixing and stirring process after filter pressing according to the concentration so as to adjust the concentration of the paste and keep the concentration of the paste at 75% -82%.
The mine filling system comprises a concentration device and a filter pressing device. The concentrating device is used for concentrating tailings generated in the mineral separation process, and conveying the concentrated tailings to the uniformly mixing and stirring device and/or the filter pressing device under the control of the control device. The filter pressing device is used for carrying out filter pressing on the concentrated tailings. Wherein, the concentration of the tailings after filter pressing is not lower than 75%.
In this embodiment, the tailings and the coarse aggregate after filter pressing enter the mixer through the same metering device, wherein the tailings and the coarse aggregate after filter pressing both can play a role in increasing the concentration of the paste.
The control device is configured to send the filter pressing tailings and the coarse aggregate into the uniformly mixing and stirring device when the paste concentration of the storage bin is smaller than a preset concentration, so that the paste concentration in the storage bin is 75% -82%. The control device of the scheme can automatically adjust the weighing standard of the metering device in an automatic control mode when the concentration of the paste in the storage device is low, namely, filter-pressed tailings and coarse tailings are conveyed to the mixing and stirring device, and the weight of the corresponding concentrated tailings is reduced, so that the concentration of the paste can be maintained at 75% -82%, and the aim of no need of water drainage after the paste is filled into the underground is achieved.
Preferably, the control device is configured to correspondingly control and reduce the conveying of the first weight part of the first tailings to the mixing and stirring device when the first weight part of the concentrated filter-pressing tailings is conveyed to the mixing and stirring device.
Preferably, the crushing device is used for crushing the filter-pressing tailings, and sending the crushed tailings into the uniformly mixing and stirring device.
Referring to fig. 4, the present invention further provides another mine filling system, configured to mix and stir the concentrated tailings, the gel material, and the filter-pressed tailings to obtain a paste, where the paste is stored in a storage device; and conveying the paste downhole through a stuffing device. The mine filling system comprises a control device, wherein the control device is used for obtaining the concentration of the paste in the filling device, and adjusting the weight of the tailings conveyed to the mixing and stirring process after filter pressing according to the concentration so as to adjust the concentration of the paste and keep the concentration of the paste at 75% -82%.
The mine filling system comprises a concentration device and a filter pressing device, wherein the concentration device is used for concentrating low-concentration tailings generated in the mineral separation process, and the filter pressing device is used for filter pressing the concentrated tailings; wherein, the concentration of the tailings after filter pressing is not lower than 75%. The control device is configured to send the concentrated filter-pressing tailings into the mixing and stirring device when the paste concentration of the storage bin is less than a preset concentration, so that the paste concentration in the storage bin is 75% -82%. The mine filling system is arranged in a mine, and the filter pressing device is used for concentrating tailings of the mine and conveying the concentrated tailings to the uniformly mixing and stirring device under the control of the control device.
The invention provides a mine filling system, which comprises a blending and stirring device 10, a powerful stirring device 20, a storage device 30, a filling device 40 and a control device 50, and is shown in fig. 5.
The blending and stirring device 10 is used for stirring 85-95 parts by weight of second tailings and 5-15 parts by weight of gel materials so as to fully mix the second tailings and the gel materials; the second tailings are tailings easy to concentrate, the concentration of the tailings after concentration is higher than 60%, and the second tailings and the gel material are obtained by weighing through a metering device respectively. The blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer.
This example differs from the above examples in that it is mixed by using 85-95 parts by weight of the second tailings and 5-15 parts by weight of the gel material. The method can form paste by directly utilizing the tailings under the condition that the tailings are easy to concentrate.
The strong stirring device 20 is used for converting the flow state of the uniformly mixed mixture, and the uniform paste is formed by controlling the stirring speed and the stirring force. Wherein the predetermined concentration of the paste is 75% -82%. The strong stirring device is a two-stage strong stirrer.
The storage device 30 includes a storage bin for storing the paste after being vigorously stirred, and the storage bin is configured with at least one level meter and at least one concentration meter for forming an alert liquid level and obtaining the concentration of the paste in the storage bin.
The filling device 40 is used to convey the paste by a pump via a pipe to the mine downhole for filling.
The control device 50 is electrically connected with the metering device and the concentration meter; and the metering device is used for controlling the metering device used for weighing the second tailings to increase or decrease the weighed weight parts based on the paste concentration obtained by the concentration meter.
In addition, the control device 50 may also be connected to an underflow control system of a thickener, and when the concentration of the paste is less than a predetermined concentration within a small range, the concentration of the underflow is increased by controlling the thickener, so that the concentration of the paste in the storage bin is 75% to 82%; or when the paste concentration is larger than the preset concentration in a small range, the underflow concentration is reduced by controlling a thickener, and the paste concentration in the storage bin is controlled to be 75-82% through filter pressing;
it can be understood that in the actual paste production process, the concentration of the paste formed by the predetermined weight ratio is inconsistent and may be or is lower than the predetermined concentration of 75% -82%, so that the concentration of the paste filled into the mine can reach 75% -82% through the control of the control device, and the aim of not needing to drain water after the paste is filled into the well is fulfilled.
The invention provides a mine filling method, which comprises the following steps:
S100A: and a metering step, weighing by a metering device to obtain 10-20 parts by weight of coarse aggregate or filter pressing tailings, 65-75 parts by weight of first tailings and 5-15 parts by weight of gel material, wherein the specific proportion of the gel material is adjusted according to the geological requirements of a mine, the higher the proportion is, the higher the compressive strength is, and the first tailings are directly obtained from the mine.
S200A, stirring 10-20 parts of coarse aggregate or filter pressing tailings, 65-75 parts of first tailings and 5-15 parts of gel material in a uniformly mixing and stirring device to fully mix the coarse aggregate, the first tailings and the gel material; the first tailings are tailings difficult to concentrate, the concentration of the concentrated tailings is lower than 60%, and the coarse aggregate is obtained by crushing solid waste which is discarded by a factory in advance.
Wherein, mixing agitating unit contains horizontal spiral stirrer and first order mixer. The horizontal spiral stirrer and the primary stirrer are used for ensuring the materials to be fully mixed, and the stirring time and the strength are ensured. The tailings are concentrated tailings with the concentration lower than 60%, the coarse aggregate is obtained by crushing solid waste which is discarded in advance from a factory, and the tailings, the coarse aggregate and the gel material are respectively obtained by weighing through a metering device.
S300A: a strong stirring step, namely converting the flow state of the uniformly mixed and stirred mixture, and forming paste with preset concentration by controlling the stirring speed and the stirring strength; wherein the predetermined concentration is 75-82%. The strong stirring device is a two-stage strong stirrer.
S400A: in the storing step, the paste after strong stirring is stored in a storage bin, and the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and obtaining the concentration of the paste in the storage bin.
S500A, filling: the paste is conveyed by a pump via a pipeline to the underground of the mine for filling.
S600A, controlling a metering device for weighing the first tailings to increase or decrease the weighed weight parts based on the paste concentration obtained by the concentration meter.
The pump conveys the paste at a first frequency when the level in the storage bin is higher than the warning liquid level, and conveys the paste at a second frequency when the level in the storage bin is lower than the warning liquid level; wherein the first frequency is greater than the second frequency.
And before the uniform mixing and stirring, sequentially carrying out filter pressing dehydration and crushing on the tailings, weighing the tailings with preset weight by a metering device, and feeding the tailings into uniform mixing and stirring equipment.
And the aim of automatically controlling to adjust the concentration of the paste filled into the underground is achieved by setting a metering step after the storing step, so that the concentration of the paste for being conveyed to the underground is 75% -82%.
The control step further comprises:
S501A, when the paste concentration is smaller than the preset concentration, reducing the weight parts of the first tailings, weighing the reduced weight parts of the filter-pressing tailings, and conveying the filter-pressing tailings to a uniformly mixing and stirring device for stirring, so that the paste concentration in the storage bin is 75% -82%. Or
S502A, when the paste concentration is higher than the preset concentration, increasing the weight parts of the first tailings, weighing the reduced weight parts of the filter-pressing tailings, and conveying the filter-pressing tailings to a uniformly mixing and stirring device for stirring, so that the paste concentration in the storage bin is 75% -82%.
Wherein the concentration of the filter-pressing tailings is not lower than 75%.
The invention also provides a mine filling method, which comprises the following steps:
S100B: and a metering step, weighing by a metering device to obtain 85-95 parts by weight of second tailings and 5-15 parts by weight of gel material, wherein the second tailings are directly obtained from the mine.
S200B: and a blending and stirring step, namely stirring the second tailings and the gel material in a blending and stirring device so as to fully mix the second tailings and the gel material. The second tailings are tailings with the concentration higher than 60% after concentration, and the coarse aggregate is obtained by crushing solid waste which is discarded in advance by a factory. The blending and stirring device comprises a horizontal spiral stirrer and a primary stirrer.
S300B: a strong stirring step, namely converting the flow state of the uniformly mixed and stirred mixture, and forming paste with preset concentration by controlling the stirring speed and the stirring strength; wherein the predetermined concentration is 75-82%. The strong stirring device is a two-stage strong stirrer.
S400B: and a storage step, storing the paste after strong stirring in a storage bin, wherein the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin.
S500B: a filling step: the paste in the storage bin is conveyed through a pipeline by a pump to be filled.
S600B: a control step including:
S601B, when the paste concentration is less than the preset concentration, the concentration of the paste in the storage bin is controlled to be 75% -82% by increasing the concentration of the underflow of the thickener (within a small range); or
S602B, when the paste concentration is higher than the preset concentration, controlling to reduce the underflow concentration (within a small range) of the thickener so as to enable the concentration of the paste in the storage bin to be 75% -82%;
wherein the concentration of the filter-pressing tailings is not lower than 75%. Wherein the concentration of the filter-pressing tailings is not lower than 75%.
In this embodiment, the pump conveys the paste at a first frequency when the liquid level in the storage bin is higher than the warning liquid level, and conveys the paste at a second frequency when the liquid level in the storage bin is lower than the warning liquid level; wherein the first frequency is greater than the second frequency. And the aim of automatically controlling to adjust the concentration of the paste filled into the underground is achieved by setting a metering step after the storing step, so that the concentration of the paste for being conveyed to the underground is 75% -82%.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The gel material is characterized by being obtained by dry grinding industrial solid wastes, clinker and grinding aid; the industrial solid waste comprises tailings, furnace slag, fly ash and desulfurized gypsum, wherein the tailings, the furnace slag, the fly ash and the desulfurized gypsum respectively account for 25-50 parts, 10-20 parts and 5 parts of the gel material in parts by weight; the slag is coal slag of a thermal power plant or steel slag produced by a steel mill;
the clinker accounts for 20-40 parts by weight of the gel material;
the grinding aid accounts for 0.5-1 part of the gel material by weight.
2. The gel material of claim 1, wherein the grinding aid comprises a grinding aid carrier, a paste early setting strength enhancing material, and a specific surface area enhancing material;
the early-stage coagulation strength enhancing material of the paste comprises triethanolamine, mirabilite, anhydrous sodium sulphate, alunite and calcium sulphate, the specific surface area enhancing material comprises sodium tripolyphosphate, and the grinding aid carrier comprises fly ash;
the grinding aid comprises, by weight, 10-60 parts of fly ash, 5-10 parts of triethanolamine, 5-15 parts of mirabilite, 5-15 parts of anhydrous sodium sulphate, 10-20 parts of alunite and 5-10 parts of calcium sulfate, and 10-20 parts of sodium tripolyphosphate.
3. The gelled material of claim 1, wherein the gelled material, after dry grinding, has a specific surface area of 450m2More than kg.
4. A mine filling system, comprising an agitation apparatus for:
mixing and stirring one or two of coarse aggregate and filter-pressed tailings, concentrated tailings and the gel material according to any one of claims 1 to 3 to obtain paste, wherein the paste is stored in a storage device; and conveying the paste downhole through a stuffing device;
the mine filling system comprises a control device, wherein the control device is used for obtaining the concentration of the paste in the storage device, and adjusting the weight of the coarse aggregate or the weight of the tailings after filter pressing conveyed to the blending and stirring process according to the concentration so as to adjust the concentration of the paste and keep the concentration of the paste at 75% -82%.
5. The mine filling system of claim 4, wherein the mixing includes a kneading and a strong mixing for converting a flow state of the kneading mixture by controlling a mixing speed and a mixing force to form a uniform paste;
the mine filling system includes:
the metering equipment is a plurality of metering devices which are respectively used for metering incoming materials;
the storage device comprises a storage bin for storing the paste after strong stirring, and the storage bin is provided with at least one level meter and at least one concentration meter and is used for forming an alert liquid level and acquiring the concentration of the paste in the storage bin; wherein, the concentration meter is arranged at the inlet of the storage bin;
the filling device is used for conveying the paste to the underground of the mine through a pipeline by a pump so as to fill the paste;
the control device is electrically connected with the metering device and the concentration meter; and the weight part of the paste is used for controlling the increase or decrease of the weighing of the coarse aggregate or the tailings after filter pressing based on the concentration of the paste obtained by the concentration meter.
6. The mine filling system of claim 4, wherein the mine filling system is provided at a mine, the mine filling system comprising a thickening device and a filter pressing device;
the concentration device is used for concentrating mine tailings so as to convey the concentrated tailings to the blending and stirring device and/or the filter pressing device under the control of the control device;
the filter pressing device is used for carrying out filter pressing on the concentrated tailings to obtain tailings with higher concentration; wherein the concentration of the filter-pressed tailings is not lower than 75%;
the control device is configured to add or reduce the tailings after filter pressing and send the tailings into the mixing and stirring device when the paste concentration of the storage bin is smaller than or larger than the preset concentration, so that the concentration of the paste in the storage bin is 75% -82%.
7. The mine filling system of claim 4, wherein the control device is configured to control the blending and stirring device to reduce the feeding of the concentrated tailings to the blending and stirring device when the filtered tailings are fed to the blending and stirring device.
8. The mine filling system of claim 6, further comprising a crushing device, wherein the crushing device is used for crushing filter-pressed tailings, and the crushed tailings are sent to the blending and stirring device through the metering device.
9. The mine filling system of claim 4, further comprising an aggregate crusher for crushing waste rock discarded during beneficiation into coarse aggregate within 20mm in diameter.
10. A mine filling system, comprising an agitation apparatus for: mixing and stirring the concentrated tailings and the gel material according to any one of claims 1 to 3 to obtain a paste, wherein the paste is stored in a storage device; and conveying the paste downhole through a stuffing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111009086.0A CN113735544B (en) | 2021-08-31 | 2021-08-31 | Gel material and mine filling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111009086.0A CN113735544B (en) | 2021-08-31 | 2021-08-31 | Gel material and mine filling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113735544A true CN113735544A (en) | 2021-12-03 |
| CN113735544B CN113735544B (en) | 2023-08-01 |
Family
ID=78734069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111009086.0A Active CN113735544B (en) | 2021-08-31 | 2021-08-31 | Gel material and mine filling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113735544B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116354691A (en) * | 2023-04-19 | 2023-06-30 | 北科蕴宏环保科技(北京)有限公司 | Slag-based full-solid waste mine filling material and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU914774A1 (en) * | 1980-04-19 | 1982-03-23 | Ural Vni Pi Galurgii | Filling set |
| CN102296988A (en) * | 2011-07-06 | 2011-12-28 | 湖南科技大学 | Paste gravity filling simulation test device |
| CN104929683A (en) * | 2015-06-16 | 2015-09-23 | 北京科技大学 | Total-tailings paste filling and stockpiling combined treatment method based on deep-cone thickener |
| CN105107825A (en) * | 2015-09-12 | 2015-12-02 | 北京科技大学 | Preparation method of full-tailings paste |
| CN110330243A (en) * | 2019-07-15 | 2019-10-15 | 北京华晟创元环境科技有限公司 | A kind of no first-hand datum tailing filling novel gelled material |
| CN111119990A (en) * | 2020-02-10 | 2020-05-08 | 北京科技大学 | An industrial-grade multifunctional paste filling test platform and test method |
| CN111852552A (en) * | 2020-08-26 | 2020-10-30 | 长沙矿山研究院有限责任公司 | Filling slurry preparation system and preparation method thereof |
| US20200378256A1 (en) * | 2018-09-30 | 2020-12-03 | China University Of Mining And Technology | Mine exploitation, separation, filling and treatment exploitation method |
-
2021
- 2021-08-31 CN CN202111009086.0A patent/CN113735544B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU914774A1 (en) * | 1980-04-19 | 1982-03-23 | Ural Vni Pi Galurgii | Filling set |
| CN102296988A (en) * | 2011-07-06 | 2011-12-28 | 湖南科技大学 | Paste gravity filling simulation test device |
| CN104929683A (en) * | 2015-06-16 | 2015-09-23 | 北京科技大学 | Total-tailings paste filling and stockpiling combined treatment method based on deep-cone thickener |
| CN105107825A (en) * | 2015-09-12 | 2015-12-02 | 北京科技大学 | Preparation method of full-tailings paste |
| US20200378256A1 (en) * | 2018-09-30 | 2020-12-03 | China University Of Mining And Technology | Mine exploitation, separation, filling and treatment exploitation method |
| CN110330243A (en) * | 2019-07-15 | 2019-10-15 | 北京华晟创元环境科技有限公司 | A kind of no first-hand datum tailing filling novel gelled material |
| CN111119990A (en) * | 2020-02-10 | 2020-05-08 | 北京科技大学 | An industrial-grade multifunctional paste filling test platform and test method |
| CN111852552A (en) * | 2020-08-26 | 2020-10-30 | 长沙矿山研究院有限责任公司 | Filling slurry preparation system and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘同有等: "《充填采矿技术与应用》", 31 October 2001, 冶金工业出版社, pages: 123 * |
| 张静文等: "钢渣胶凝体系下矿山充填料的流动性研究", 《金属矿山》 * |
| 张静文等: "钢渣胶凝体系下矿山充填料的流动性研究", 《金属矿山》, no. 5, 31 May 2013 (2013-05-31), pages 153 - 156 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116354691A (en) * | 2023-04-19 | 2023-06-30 | 北科蕴宏环保科技(北京)有限公司 | Slag-based full-solid waste mine filling material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113735544B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773142B (en) | Anshan type lean magnetite underground ore dressing and filling method | |
| CN103304171B (en) | Machine-made sand preparation method capable of replacing natural sand | |
| CN104399573B (en) | A kind of Cu-S ore ore-dressing technique | |
| CN113956008B (en) | Superfine tailing cemented filling soft soil curing agent and preparation method and application thereof | |
| CN102865101A (en) | Filling method and system of coal mine goaf | |
| CN107298561A (en) | A kind of iron tailings barren rock resource utilization method | |
| CN112521119A (en) | Preparation method and filling system of coal-based solid waste filling paste | |
| CN106939796A (en) | The method and system that filling slurry fills underground goaf are prepared using efflorescent sand | |
| CN105601206A (en) | Iron ore waste rock self-compaction concrete | |
| CN106884675A (en) | The technique that a kind of consolidated fill slurry fills underground goaf | |
| CN208814896U (en) | A kind of preparation facilities of filling in mine material | |
| CN101575192A (en) | Coal gangue cement mortar | |
| CN106499435A (en) | A kind of placement method of underground goaf and filling system | |
| CN113735544B (en) | Gel material and mine filling system | |
| CN104844108A (en) | Like concrete filling material suitable for road large cavity goaf treatment | |
| CN115010458A (en) | Coal mine underground filling material prepared from metal ore overflow tailings and process and application thereof | |
| CN107413514A (en) | A kind of high-silicon high calcium magnesite low cost ore-dressing technique | |
| CN110482966A (en) | Compound cemented filling material and its preparation method and application | |
| Wang et al. | Cemented backfill technology based on phosphorous gypsum | |
| CN114057415A (en) | Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material | |
| CN202045757U (en) | High-quality aggregate processing production equipment | |
| CN115849782B (en) | Alkali-activated geopolymer-cemented ultrafine phosphate tailing filling material and preparation method thereof | |
| CN114195472B (en) | Preparation method of superfine tailing cemented filling slurry with high fluidity and high curing strength | |
| CN112643891A (en) | System and pulping method for pulping and filling dry mine tailings | |
| CN214562002U (en) | Preparation system for preparing color baking-free bricks by using graphite tailings and stripped waste rocks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |