CN110523515A - A kind of quartz vein precious metal ore large size dry method enrichment ore dressing energy conservation and environmental protection technique - Google Patents
A kind of quartz vein precious metal ore large size dry method enrichment ore dressing energy conservation and environmental protection technique Download PDFInfo
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- CN110523515A CN110523515A CN201910903344.6A CN201910903344A CN110523515A CN 110523515 A CN110523515 A CN 110523515A CN 201910903344 A CN201910903344 A CN 201910903344A CN 110523515 A CN110523515 A CN 110523515A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 210000003462 vein Anatomy 0.000 title claims abstract description 15
- 239000010970 precious metal Substances 0.000 title claims abstract description 14
- 239000010453 quartz Substances 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 title claims abstract description 11
- 238000004134 energy conservation Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 82
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 37
- 239000011707 mineral Substances 0.000 claims abstract description 37
- 238000000227 grinding Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 208000011580 syndromic disease Diseases 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 210000001367 artery Anatomy 0.000 claims description 2
- 230000032258 transport Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000019621 digestibility Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of quartz vein precious metal ore large size dry method to be enriched with ore dressing energy conservation and environmental protection technique, it is characterized in that: tcrude ore passes through forklift feeding to hopper, it is crushed into jaw crusher and gyratory crusher, broken tcrude ore feeding vertical roll grinder carries out superfine grinding, and tcrude ore superfine powder is carried along into ore separators by air-flow and carries out dry mineral processing；Into after ore separators, tcrude ore superfine powder is refined separation under suspended state, and ultra-fine gangue powder, which is entrained by the flow of air and passes through, to be entered bulk machine by conveying skewed slot after ultra-fine gangue powder collector is collected and transport.Compared with existing quartz vein precious metal ore technique of preparing, present invention process process simplification invests small, target ore elimination factor height, no water consumption, and no reagent consumption is discharged in tailings and polluted without medicament, may be used as green building material or pit backfill, second ploughing are built up fields.
Description
Technical field
The present invention relates to a kind of quartz vein precious metal ore dry mineral processing technique and complexes.
Background technique
Centuries carrys out the medicament wet flotation technique that quartz vein precious metal ore Mineral Processing Industry adopts always gradual perfection, compares
It is suitble to rich ore production scale and high added value income ore dressing.By exploiting for a long time, in addition gold is because of its excellent physical characteristic, work
Industry demand greatly increases, and rich ore is fewer and fewer, and the exploitation of low poor position mine has been to adopt the main production object of Mineral Processing Industry.
Selecting lean ore will result in old wet processing, reagent consumption is huge, and at high cost, income is low, at the same generate magnanimity carry it is toxic,
The tailings of harmful floating agent can not digestibility and utilization, cause long-term environmental pollution problem.The above predicament causes a large amount of gold
It mine Mineral Processing Enterprises or stops production because of environmental issue；It is lost because cost is excessively high.Therefore, conventional wet medicament floatation process
Be can not adapt to modernization using lean ore as the mineral processing production of object.
In view of the above Mineral Processing Industry status, our company scientific research personnel, which pass through, to concentrate on studies, and it is extensive to use for reference other industries
Grinding sorting technology experience is repeatedly improved, is finally developed a set of suitable by having the exploitation being directed to design and practical ore dressing to test
Close the large-scale dry method ore grinding ore dressing environmental-protecting process production line of quartz vein precious metal ore ore dressing feature.
Summary of the invention
The object of the present invention is to provide a kind of quartz vein precious metal ore large size dry method to be enriched with ore dressing energy conservation and environmental protection technique, and existing
There is technology to compare, present invention process process simplification invests small, target ore elimination factor height, no water consumption, no reagent consumption, row
It puts in tailings and is polluted without medicament, may be used as green building material or pit backfills, second ploughing is built up fields.
The technical scheme is that a kind of quartz vein precious metal ore large size dry method is enriched with ore dressing energy conservation and environmental protection technique,
Be characterized in: tcrude ore is by forklift feeding to hopper, and into jaw crusher and gyratory crusher, broken tcrude ore is logical
It crosses after the metering of belt-type weigher and superfine grinding is carried out by inclined belt conveyer feeding vertical roll grinder, the tcrude ore after grinding
Brought into the tailing separator on vertical roller grinder top by air-flow.Tcrude ore coarse powder falls into vertical roller grinder mill and continues grinding, tcrude ore
Superfine powder is carried along into ore separators by wind and carries out dry mineral processing.
Air-flow carries tcrude ore superfine powder and enters ore floatation room participation ore dressing process, driving motor by entering the wind feed inlet
Speed reducer and transmission main shaft rotation are driven, ultra-fine gangue separator is driven to carry out target mineral powder and gangue powder in ore floatation room
Be precisely separated；Wherein gangue powder is taken out of by air-flow by the outlet of gangue powder；Target mineral powder after enrichment is under the effect of gravity
It is discharged by enrichment target mineral powder cone bucket of gathering materials by motor-driven air lock discharger, is separated to reach target mineral powder with gangue powder
Purpose.
After ore separators, tcrude ore superfine powder is refined separation under suspended state, and ultra-fine gangue powder is entrained by the flow of air
And enter bulk machine by conveying skewed slot after being collected by gangue powder collector and transport, purified air routing system blower from
Exhaust pipe discharge；Target mineral powder after enrichment passes through motor-driven air lock discharging from the target mineral powder of ore separators lower part cone bucket of gathering materials
Device discharge, is put in storage through conveying hoisting and stores, to selected use in next step.
There are two production line air-flow sources, and one is that normal temperature air is provided by airspace, enters from cold wind station；It dries
The thermal current of dry tcrude ore moisture content is provided by hot-blast stove, is entered from hot air disperser.By SRM-M vertical grinder air supplying ring after the two mixing
Into in mill, temperature can be adjusted by cold and hot valve area size, 150~300 DEG C of the wind-warm syndrome into grinding.Wind speed 15 in grinding~
20m/s；Mill wind-warm syndrome is down to 100 DEG C or so because evaporating tcrude ore moisture content out.
Effect of the invention:
1, tcrude ore is sufficiently released by superfine grinding, target mineral, is laid the foundation for accurate, efficient ore dressing.
2, the selection of Large Efficient SRM-M series vertical roller grinder, ore grinding yield greatly improve, daily yield from 500 tonnes,
1000 tonnes, 5000 tonnes to 10000 tonnes, ore powder granularity greatly improves, and 300 mesh, 400 mesh, 500 mesh can be selected arbitrarily.
3, grinding pow consumption substantially reduces, it is only necessary to which the 30%~50% of conventional wet grinding pow consumption saves ore grinding cost.
4, dry mineral processing is high-efficient, and target ore reduces by 70%~80% than conventional wet technique in gangue powder, cost pole
It is low, no reagent consumption.
5, the gangue powder (mine tailings) after ore dressing is polluted without chemical reagent, may be used as construction material or pit second ploughing.
6, present invention enrichment ore dressing process first half does not need water participation, particularly suitable for water shortage using air as medium
Few water area.
7, it volatilizees without harmful chemicals volatile contaminant, such as mercury to caused by operator during dry mineral processing of the present invention
Employment injuries.
8, whole-course automation operation may be implemented in dry method grinding ore dressing process of the present invention, and workshop only stays patrol worker.
Detailed description of the invention
Fig. 1 is present invention process schematic diagram.
Fig. 2 is ore separators structural schematic diagram.
Drawing reference numeral explanation: forklift 1, hopper 2, jaw crusher 3, gyratory crusher 4, belt-type weigher 5, inclination
Belt conveyor 6, vertical roll grinder 7, vertical roll grinder top tailing separator 8, ore separators 9, gangue powder collector 10, system
Blower 11, exhaust pipe 12, conveying skewed slot 13, bulk machine 14, hot-blast stove 15, cold wind station 16, motor-driven air lock discharger 17, enter the wind into
Material mouth 18, driving motor 19, speed reducer 20, transmission main shaft 21, ore floatation room 22, gangue powder outlet 23, the separation of ultra-fine gangue
Device 24, shell 25, target mineral powder gather materials cone bucket 26, target mineral powder outlet 27.
Specific embodiment
A kind of quartz vein precious metal ore large size dry method enrichment ore dressing energy conservation and environmental protection technique, as shown in Figure 1,100~500mm is big
Blocky tcrude ore arrives hopper 2 by 1 feeding of forklift, feeds jaw crusher 3 and gyratory crusher 4 through hopper 2, from being crushed
It is the broken tcrude ore of 5~30mm that granularity is fractured into when machine comes out, and water content is less than 3%, after the metering of belt-type weigher 5
SRM-M vertical roll grinder 7 is transported to by inclined belt conveyer 6 and carries out superfine grinding, the tcrude ore superfine powder after grinding is by gas
The tailing separator 8 that stream is carried along into 7 top of SRM-M vertical roll grinder carries out the separation of thickness powder, and tcrude ore coarse powder falls into vertical
Roller grinds mill and continues grinding, and the tcrude ore superfine powder after separation is carried along into Smax-R ore separators 9 by wind and carries out dry mineral processing.
Wherein detailed process is as follows for 7 superfine grinding of vertical roll grinder: in the middle part of feeding 7 mill of vertical roll grinder, rotation
Mill and the grinding roller of rotation carry out movement extruding to broken tcrude ore, and broken tcrude ore is in the middle part of mill to mill edge centrifugal movement
The bed of material, superfine grinding three phases are formed by degassing, compacting in the process, while being made in 11 draft of 7000Pa high-pressure system blower
Under, the tcrude ore after superfine grinding is taken away by the high-speed flow entered from mill lower part air inlet, is mixed to form dust-contained airflow
Apparatus for separating fine powder from coarst powder 8 into grinding machine top carries out the separation of thickness powder, is not blocked by levigate coarse granule by rotor of powder separator,
Mill is fallen under coarse granule, is newly mixed into tcrude ore with other, new rolling pressure grinding process is participated in.This circulation grinding mistake
Journey can carry out Cheng Baici per minute, and multiple efficient circulation, mill efficiency is very high, enable the quick grinding of tcrude ore and sorting,
The ultra-fine gangue powder for reaching fineness requirement is selected in time to be taken away, and coarse powder returns mill recycling grinding.Tcrude ore partial size is unqualified, absolutely
Vertical roll grinder 7 can not be gone out, ensure that the efficient of tcrude ore grinding and go out the equal homogeneous cause of mill tcrude ore powder fineness, partial size 5~
30 μm of particles account for 90%, and 38 μm of maximum particle diameter.
There are two production line air-flow sources, and one is that normal temperature air is provided by airspace, enters from cold wind station；It dries
The thermal current of dry tcrude ore moisture content is provided by hot-blast stove, is entered from hot air disperser.Entered after the two mixing by SRM-M vertical grinder 5
In mill, temperature can be adjusted by cold and hot valve area size, 150~300 DEG C of the wind-warm syndrome into grinding.15~20m/ of wind speed in grinding
s；Mill wind-warm syndrome is down to 100 DEG C or so because evaporating tcrude ore moisture content out.
It is as shown in Figure 2: Smax-R series high-precision ore separators 9, including shell 25, driving motor 19 and speed reducer 20, In
25 top of shell is equipped with gangue powder outlet 23；It is equipped with ore floatation room 22 in the middle part of shell 25, is equipped in ore floatation room 22 super
Thready pulse mountain flour separator 24；It is equipped with enrichment target mineral powder in 25 lower part of shell to gather materials cone bucket 26,26 bottom of cone bucket of gathering materials is equipped with
It is enriched with target mineral powder outlet 27, motor-driven air lock discharger 17 is arranged below in mineral powder outlet 27；Driving motor 19 and speed reducer
20 connections drive ultra-fine gangue separator 24 to rotate by transmission main shaft 21.Forced feed lubrication is equipped in 21 supporting-point of transmission main shaft
Filling-up area, and it is furnished with oil pump.In ore floatation room, 22 corresponding housing, 25 tangential direction is equipped with air inlet feed inlet 18.
Dry ore dressing machine working principle:
Air-flow carries tcrude ore superfine powder (referred to as granule fluid) and enters dry method high-precision ore separators, granule fluid together
Under the collective effect of ore floatation room and ultra-fine gangue separator, make the target ore powder particles retention sedimentation row of big specific gravity
Out, the gangue powder particles of small specific gravity enter ore dressing machine rotor with air-flow and move in dust-contained airflow, enter ultra-fine arteries and veins in next step
Mountain flour separator 19.
Tcrude ore superfine powder enters ore floatation room 22 by air inlet feed inlet 18 and participates in ore dressing process, and driving motor 19 drives
Dynamic speed reducer 20 and transmission main shaft 21 rotate, drive ultra-fine gangue separator 24 ore floatation room 22 carry out target mineral powder with
Gangue powder is precisely separated；Wherein gangue powder is taken out of by air-flow by gangue powder outlet 23；Target mineral powder after enrichment is in weight
Entered target mineral powder outlet 27 by mineral powder cone bucket 26 of gathering materials under power effect and be discharged by motor-driven air lock discharger 17, to reach
The purpose separated to target mineral powder with gangue powder.
Mean flow rate 10~20m/s of the granule fluid in dry ore dressing machine, 100~120 DEG C of temperature, pressure drop 2500Pa；
80~90 DEG C of temperature in filter bag type gangue powder collector 19, pressure drop 1500Pa, filtration velocity 0.8m/min.
Mineral separation precision is adjusted by 19 rotational speed regulation of driving motor, ore dressing amount by air velocity.After ore separators 9,
Tcrude ore superfine powder is refined separation under suspended state, and air-flow carries gangue powder and enters gangue collector 10, make gangue powder with
Airflow filtering separation.Ultra-fine gangue powder is sorted medium air and takes away and pass through after ultra-fine gangue powder collector 10 is collected by defeated
Skewed slot 13 is sent to transport into bulk machine 14, purified air routing system blower 11 is discharged from exhaust pipe 12.After being separated by filtration
Efflux gas in dust content be less than 10mg/m3。
Target mineral powder after enrichment passes through 17 row of motor-driven air lock discharger from 9 lower part of Smax-R series high-precision ore separators
Out, it is put in storage and stores through conveying hoisting, to selected use in next step.
All fronts technical process uses negative-pressure operation, and air flow power is provided by the system air-introducing machine 11 for being located at production line end.
Particular embodiments described above, pair present invention solves the technical problem that, technical solution carried out further in detail
Explanation.It should be understood that the above is only a specific embodiment of the present invention, be not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (4)
1. a kind of quartz vein precious metal ore large size dry method is enriched with ore dressing energy conservation and environmental protection technique, it is characterized in that: tcrude ore passes through forklift
(1) feeding is crushed to hopper (2) into jaw crusher (3) and gyratory crusher (4), reaches 5~30mm after broken
Broken tcrude ore by belt-type weigher (5) measure after by inclined belt conveyer (6) feeding vertical roll grinder (7) surpassed
Fine powder is ground, and the tcrude ore superfine powder after grinding is carried out thick by the apparatus for separating fine powder from coarst powder (8) that air-flow is carried along into vertical roller grinder top
Fine powder separation, tcrude ore coarse powder fall into vertical roller grinder mill and continue grinding, and the tcrude ore superfine powder after separation is entrained by air-flow
Enter ore separators (9) and carries out dry mineral processing；After ore separators (9), tcrude ore superfine powder is refined separation under suspended state, surpasses
Thready pulse mountain flour, which is entrained by the flow of air and passes through, enters bulk machine (14) by conveying skewed slot (13) after gangue powder collector (10) is collected
It transports, purified air routing system blower (11) is discharged from exhaust pipe (12)；Target mineral powder after enrichment is from ore separators
(9) the target mineral powder of lower part gathers materials cone bucket (26) by motor-driven air lock discharger (17) discharge, is put in storage and stores through conveying hoisting,
To selected use in next step.
2. a kind of quartz vein precious metal ore large size dry method as described in claim 1 is enriched with ore dressing energy conservation and environmental protection technique, feature
It is: dry ore dressing machine (9) interior 10~20m/s of wind speed, 100~120 DEG C of temperature, pressure drop 2500Pa；Filter bag type gangue powder collector
(10) 80~90 DEG C, pressure drop 1500Pa, filtration velocity 0.8m/min of interior temperature.
3. a kind of quartz vein precious metal ore large size dry method as described in claim 1 is enriched with ore dressing energy conservation and environmental protection technique, feature
Be: the process that ore separators (9) carries out dry mineral processing is as follows: air-flow carries tcrude ore superfine powder by entering the wind feed inlet (18) first
Ore dressing process is participated in into ore floatation room (22), driving motor (19) drives speed reducer (20) and transmission main shaft (21) rotation,
Ultra-fine gangue separator (24) is driven to carry out being precisely separated for target mineral powder and gangue powder in ore floatation room (22)；Its middle arteries
Mountain flour is taken out of by air-flow by gangue powder outlet (23)；Target mineral powder after enrichment is under the effect of gravity by enrichment target ore
Powder gathers materials cone bucket (26) by motor-driven air lock discharger (17) discharge, to reach the mesh that target mineral powder is separated with gangue powder
's.
4. a kind of quartz vein precious metal ore large size dry method as described in claim 1 is enriched with ore dressing energy conservation and environmental protection technique, feature
Be: there are two production line air-flow sources, and one is that normal temperature air is provided by airspace, enters from cold wind station (16)；It dries
The thermal current of dry tcrude ore moisture content is provided by hot-blast stove (15), is entered from hot air disperser；Entered after the two mixing by vertical grinder (7)
In mill, temperature can be adjusted by cold and hot valve area size, and 150~300 DEG C of the wind-warm syndrome into grinding grinds 15~20m/ of interior wind speed
s；Mill wind-warm syndrome is down to 100 DEG C or so because evaporating tcrude ore moisture content out.
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| CN201910903344.6A CN110523515A (en) | 2019-09-24 | 2019-09-24 | A kind of quartz vein precious metal ore large size dry method enrichment ore dressing energy conservation and environmental protection technique |
| CN202010710309.5A CN111617872A (en) | 2019-09-24 | 2020-07-22 | Large-scale dry-method enrichment ore dressing energy-saving and environment-friendly process for quartz-vein noble metal ore |
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| CN201910903344.6A CN110523515A (en) | 2019-09-24 | 2019-09-24 | A kind of quartz vein precious metal ore large size dry method enrichment ore dressing energy conservation and environmental protection technique |
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| CN202010710309.5A Pending CN111617872A (en) | 2019-09-24 | 2020-07-22 | Large-scale dry-method enrichment ore dressing energy-saving and environment-friendly process for quartz-vein noble metal ore |
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| CN111940125A (en) * | 2020-07-30 | 2020-11-17 | 潼关中陕核环保建材有限公司 | Method and system for recovering precious metals in low-grade gold tailings |
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| CN101767092B (en) * | 2009-12-30 | 2012-02-08 | 杭州锦江集团有限公司 | Bauxite wind power beneficiation method |
| CN201632419U (en) * | 2010-03-25 | 2010-11-17 | 天津水泥工业设计研究院有限公司 | Upper and lower-feeding dual-grading-type high-efficiency powder concentrator |
| CN102513202A (en) * | 2011-12-27 | 2012-06-27 | 陕西斯达实业有限公司 | Novel process for producing superfine powder |
| CN102921547A (en) * | 2012-11-20 | 2013-02-13 | 北方重工集团有限公司 | Dry type ore dressing process for iron ore |
| CN203002448U (en) * | 2012-12-25 | 2013-06-19 | Lv技术工程(天津)有限公司 | Cement open-circuit grinding system with powder pre-selecting function |
| CN107617508B (en) * | 2017-09-19 | 2020-06-09 | 中国地质科学院郑州矿产综合利用研究所 | Fine-grain tungsten-tin associated ore beneficiation process |
| CN207941711U (en) * | 2017-11-17 | 2018-10-09 | 天津水泥工业设计研究院有限公司 | A kind of centripetal high-efficient powder concentrator |
| CN208944347U (en) * | 2018-09-20 | 2019-06-07 | 天津宏生建材科技有限公司 | A kind of thickness raw material sorting unit |
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| CN111940125A (en) * | 2020-07-30 | 2020-11-17 | 潼关中陕核环保建材有限公司 | Method and system for recovering precious metals in low-grade gold tailings |
| CN111940125B (en) * | 2020-07-30 | 2022-04-12 | 中陕核工业集团综合分析测试有限公司 | Method and system for recovering precious metals in low-grade gold tailings |
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Application publication date: 20191203 |