CN101289325A - Process for preparing vapour pressure air-entrained concrete light heat-insulation fireproof bricks by gold tailings - Google Patents
Process for preparing vapour pressure air-entrained concrete light heat-insulation fireproof bricks by gold tailings Download PDFInfo
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- CN101289325A CN101289325A CNA2008100711845A CN200810071184A CN101289325A CN 101289325 A CN101289325 A CN 101289325A CN A2008100711845 A CNA2008100711845 A CN A2008100711845A CN 200810071184 A CN200810071184 A CN 200810071184A CN 101289325 A CN101289325 A CN 101289325A
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- gold tailings
- light heat
- pressure air
- vapour pressure
- concrete light
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- 239000004567 concrete Substances 0.000 title claims abstract description 29
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000010931 gold Substances 0.000 title claims abstract description 23
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 23
- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 239000011449 brick Substances 0.000 title claims description 46
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000000843 powder Substances 0.000 claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 22
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 22
- 239000004571 lime Substances 0.000 claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000010440 gypsum Substances 0.000 claims description 19
- 229910052602 gypsum Inorganic materials 0.000 claims description 19
- 239000006071 cream Substances 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 6
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 239000000344 soap Substances 0.000 claims description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 6
- 150000008130 triterpenoid saponins Chemical class 0.000 claims description 6
- 241000931143 Gleditsia sinensis Species 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 7
- 239000011505 plaster Substances 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 2
- LWEAHXKXKDCSIE-UHFFFAOYSA-M 2,3-di(propan-2-yl)naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S([O-])(=O)=O)=C(C(C)C)C(C(C)C)=CC2=C1 LWEAHXKXKDCSIE-UHFFFAOYSA-M 0.000 abstract 1
- 235000015841 Acacia concinna Nutrition 0.000 abstract 1
- 244000044167 Acacia concinna Species 0.000 abstract 1
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 12
- 238000003860 storage Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000007688 edging Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000011799 hole material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910052934 alunite Inorganic materials 0.000 description 1
- 239000010424 alunite Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229910001649 dickite Inorganic materials 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229940082569 selenite Drugs 0.000 description 1
- MCAHWIHFGHIESP-UHFFFAOYSA-L selenite(2-) Chemical compound [O-][Se]([O-])=O MCAHWIHFGHIESP-UHFFFAOYSA-L 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 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 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
The invention relates to a firebrick preparation method, in particular to a method of preparing an autoclaved aerated concrete light heat insulating firebrick with gold tailings. The invention takes the gold tailings as the main raw material which is made by a pre-activating treatment, then a certain amount of cement, lime, foam stabilizer of nekal bx or soap pod powder and aluminum power paste are added, and then plaster and self-made compound admixtures are added to prepare into sizing agent. The later preparing procedures are as follows: pour mold for gas-forming and stilling, dry heat pre-curing, cutting and stacking, being steamed in a caldron and being taken out of the caldron, and finally the firebrick is formed. The firebrick is put into the caldron to steam for 5 to 7 hours under constant voltage; the steam pressure is 1.1 to 1.5 MPa, the temperature is from 185 DEG C to 195 DEG C. The firebricks prepared by the method have good effect of heat insulation in stove owing to low coefficient of heat conductivity, thereby being used in the low temperature section of ceramics kiln collapses, tunnels, resistance furnace and being capable of realizing energy saving. The firebricks prepared by the method also have the advantage of being light owing to the volume and density being less than those of the majority of light heat insulating firebricks.
Description
Technical field
The present invention relates to a kind of preparation method of refractory brick, relate to a kind of method of utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks specifically.
Technical background
Refractory brick is widely used in industry smelting, forging, porcelain such as fire at thermal kiln furnace, becomes indispensable important materials.Along with development of technology, refractory brick also develops into various light fire bricks by heavy refractory brick gradually.Light fire brick is by the gentle phase composite of solid phase, and gas forms isolated gas and pricks in gu body brick, and therefore, the thermal conductivity of light fire brick is lower, plays better heat-insulation and heat-preservation effect in thermal kiln furnace.At present, produce the pore-forming material of the raw material of light fire brick both at home and abroad except necessity, as float pearl, perlite, vermiculite, silicon bath soil and artificial hollow ball and used a large amount of clay water slurries outward, simultaneously, on the method for producing light fire brick, nothing more than adopting with the mud injection model that configures, drying makes traditional casting of adobe, with the extrusion molding in vacuumizing mud extruder of prefabricated pug, with brick blank drying, be cut into the casting of goods and utilize brick pressing machine the adobe material to be pressed into the machine platen press of adobe.But because of adding moisture content many, green strength is low, the carrying cracky, drying time is long, it is many to cut the mill clout, also is generally natural or synthetical contains the hole material even if add the pore-forming material of necessity.The adding of these aglites, the one, raw materials cost significantly improves, and the 2nd, the brick in-vivo tissue constitutes inhomogeneous, and the matrix part is comparatively fine and close, and brick body thermal conductivity increases, and having increased is heated collapses the probability that mistake bursts, and thermal shock resistance reduces.
Along with the development of society and the progress of science and technology, development through twenties years, people have invented and have partly adopted flyash, waste stone powder, mine waste, be equipped with lime, concrete, foaming agent and substitute the method that clay prepares aerated concrete light-brick, the New Building Materials that utilize these methods to produce reach the purpose that energy-saving and environmental protection and waste utilize again.However, aerated concrete light-brick also only belongs to the notion of common brick, does not have the function of insulating refractory.
In the gold production process, mine tailing is generally deposited in the mine tailing storehouse with the form of waste water and solid slag mixture, when taking a large amount of soils, valuable Mineral resources have been wasted, have a strong impact on production environment, the mine tailing storehouse also exists great potential safety hazard, and the raffinate in the mine tailing is bigger to the harm of ecotope.A large-scale surface mining gold mining enterprises, annual about 1,000 ten thousand tons of the dump leaching mine tailing that produces, annual about 1,500,000 tons of the mine tailing that produces.Raw ore mineral assemblage is mainly: quartzy, limonite-native state combination, next has quartz-limonite, the combination of pyrrhosiderite native state.The Gold Ore mineral composition has: gangue mineral content based on quartz (90%), is dickite and other clay mineral generally greater than 93% secondly, accidental alunite, sericite etc.Many compositions and content in the mine tailing are very suitable for preparing vapour pressure air-entrained concrete light heat-insulation fireproof bricks.But how directly to utilize gold tailings to prepare aerated concrete light refractory brick and do not see relevant report.
Aerated concrete light refractory brick is not only different in application facet with common aerated concrete light-brick, has more substantial difference on the preparation method.Because of light fire brick will guarantee higher refractoriness, therefore, on the composition and proportioning of raw material, common aerated concrete light-brick is with the mine waste, it is main being equipped with lime, concrete, foaming agent, and aerated concrete light refractory brick is except the principle that will abide by high alumina, low iron, and what is more important must be added the raw material of necessary high temperature resistant, multiple hole.
Gypsum (dihydrate gypsum, plaster stone), its composition (wB%) is: CaO
32.5, SO
346.6, H
2O20.9.Composition changes little.Mechanical tramp materials such as clay, organic matter are often arranged.Sometimes contain SiO
2, Al
2O
3, Fe
2O
3, MgO, Na
2O, CO
2, impurity such as Cl.Gypsum is generally white, colourless, and colourless transparent crystal is called selenite, sometimes because of impure ash, pale yellow, the shallow brown isochrome of forming.Streak white, transparent.Gypsum exists 3 to discharge the crystal water stage during heating: 105～180 ℃, at first discharge 1 water molecules, and immediately discharge water molecules half, change the bassanite that contains 5 crystal water into, also claim the plaster of Paris or semi-hydrated gypsum.200～220 ℃, discharge remaining half water molecules, change III type anhydrite into.About 350 ℃, change II type gypsum Ca[SO into
4].Further change I type anhydrite in the time of 1120 ℃ into.1450 ℃ of melt temperatures.The microvoid structure of gypsum and goods thereof and thermal dehydration make it the good sound insulation of tool, heat insulation and fire resistance.
Summary of the invention
Purpose of the present invention will utilize gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks exactly.For realizing that purpose of the present invention adopts technical scheme to be: with the gold tailings be main raw material and carry out pre-activation treatment after, on the basis that adds a certain amount of cement, lime, suds-stabilizing agent, aluminium powder cream batching, add a certain amount of gypsum and self-control compound additive, make slurry, injection molding get angry with quietly stop, xeothermic precuring, cut stacking, go into still steam-cured, go out still, form finished product refractory brick at last.
By weight percentage, concrete prescription is:
Gold tailings 55-75
Cement 13-25
Lime 10-19
Gypsum 1.0-3.5
Suds-stabilizing agent 0.05-0.08
Aluminium powder cream 0.05-0.08
Self-control compound additive 0.05-0.10
The pre-activation treatment of gold tailings of the present invention mainly is to select mine tailing that suitable particle size distributes and a small amount of efficient activator, gypsum, lime to add ball mill crystal seed when carrying out after the wet-milling preparing as slip to gold tailings by mechanical classification.
Cement of the present invention is meant the bulk cement and the sack cement of various labels;
Suds-stabilizing agent of the present invention is meant and draws back powder or Chinese honey locust powder.Adopt suds-stabilizing agent of the present invention that bubble is played firm effect, can reduce the surface tension of solid-liquid-gas three-phase system, the physical strength of bubble chamber film in the increase system prevents the bubble slurry boiling that the causes mould that collapses that breaks, thereby reaches the moulding purpose.Suds-stabilizing agent metal surface active substance, its effect are the surface tension that reduces water, increase the physical strength of bubble chamber film.
Aluminium powder cream of the present invention is meant that the high-purity aluminium powder of high-quality atomizes through high temperature, is medium with water, adds special water solvent and grinds refining silver gray, the flakey powder that processes.Have the active aluminum height, easily be scattered in water, abundant, the easy to use characteristics such as stable of getting angry.
Self-control compound additive of the present invention is meant the mixture of rosin amine soap and triterpenoid saponin, adds before injection molding.Be that 1: 3～3: 1 ratio joins and mixes in the consubstantiality ponding and can use in the ratio between it earlier during preparation with rosin amine soap, triterpenoid saponin raw material.
Mine tailing and gypsum quantitatively add water when slurrying, help once making the suitable slip of concentration.Slip pumps in the proportioning building slip storage tank standby by slush pump.
Block lime is through physical pendulum formula jaw crushing crusher machine; During grinding, lime by the storehouse at the bottom of disk feeder feed and carry out combined grinding in the atomizer mill.Lime powder after levigate is delivered to chapelet through worm conveyor, delivers in the proportioning building lime powder feed bin standby by chapelet.
Aluminium powder cream is poured in the aluminium powder stirrer and is made suspension by human metering, and every mould preparation once; The suspension that stirs is directly put into the cast stirrer.
In batching, stirring and the cast, lime, cement by the storehouse at the bottom of feeding machine send in the electronics powder weighing balance, delivered in the cast stirrer by worm conveyor after cummulative metering, mixing can be poured into a mould behind aluminium powder cream, suds-stabilizing agent and the self-control compound additive of the on-the-spot preparation of adding again.The amount that is added is unit with the mould.
Base substrate after the cutting is drawn in by slow-motion hoist that to go into still in the still steam-cured, the steam-cured time 5～7h of constant voltage, vapor pressure 1.1MPa～1.5MPa, 190 ℃ ± 5 ℃ of temperature.
The scrap stock that cut down for cutting machine fall into the bottom skewed slot, wash to the useless stock tank in cutting machine bottom through water, after pulling an oar by vertical slush pump pump to the casting molding machine in the flushing waste water pond, carry out stirring pulping together with part flushing waste water in the pond, after reaching finite concentration, pump in the useless slurry storage tank in the proportioning building standby by slush pump again.
Adopt the vapour pressure air-entrained concrete light heat-insulation fireproof bricks of method preparation of the present invention, [under the normal temperature, its thermal conductivity has only 0.08～0.18W/ (mK) because the thermal conductivity of air-entrained concrete light heat-insulation refractory brick is low.Only be equivalent to 1/15 of normal concrete, 1/10 of clay brick.Therefore, it is used for the heat insulation effect with excellence of stove, can reduce scattering and disappearing of kiln body temperature degree significantly, improve the temperature in the kiln, cut down the consumption of energy, energy-saving effect is remarkable, good heat-insulation effect can be used for low-temperature zone such as ceramic kiln collapse, tunnel, resistance furnace, can reach purpose of energy saving.Simultaneously because the volume density of vapour pressure air-entrained concrete light heat-insulation fireproof bricks has only 0.4～0.7g/cm
3, promptly every cubic metre is had only 400～700kg, is lower than most of light fire bricks.In various light thermal-shield refractory goods, it belongs to minimum a kind of of density.Alumina hollow ball insulating product for example, volume density 1.2～1.6g/cm
3, be 2～4 times of this product.The volume density of high alumina matter foamed light insulating fire brick is 0.5～1.0g/cm
3, also high a lot of than this brick.And the volume density of lightweight silica heat-proof firebrick is 0.8～1.2g/cm
3, be 1～2 times of this product.Compare with above-mentioned like product, this vapour pressure air-entrained concrete light heat-insulation fireproof bricks volume density is little, lightweight.
Light fire brick of the present invention is widely used on the industrial furnace and high temperature service of departments such as metallurgy, machinery, chemical industry, oil, building, light industry, electric power.Over-all propertieies such as its use properties, physical strength, high thermal resistance, thermal conductivity are better than existing various middle-grade light fire brick.All use temperatures all can be used air-entrained concrete light heat-insulation refractory brick product at the various hot industry stoves below 1300 ℃, and its purposes is very extensive.
Embodiment
Embodiment 1
(1) 57kg gypsum and 570kg lime are carried out combined grinding and reach pre-activation treatment in atomizer mill, make plaster stone ash powder, deliver in the lime powder feed bin standby through chapelet.
(2) get the 3000kg gold tailings ball mill to the mineral aggregate bucket in, progressively add ball mill and carry out levigately, control ore pulp degree is about 60%, ball mill limit edging adds altogether the water of about 2000kg and makes slurry, and pumps in the slip storage tank standby by slush pump.
(3) get to the sack cement of 1000kg PC32.5R in the cement storage tank standby.
(4) every cast one mould (2.72m
3) get 1.25kg aluminium powder cream, 1.10kg and draw back powder and 2.20kg self-control compound additive (rosin amine soap: triterpenoid saponin=3: 7), drop into and to pour standby in the aluminium powder storage tank (above-mentioned aluminium powder cream, suds-stabilizing agent, self-control compound additive can only on-the-spotly be equipped with and use, and are unit with the mould) into after stirring into 5% water system suspension in the aluminium powder stirrer.
(5) after the required material of above-mentioned various prescriptions is carried out batching, by processing requirement, to pour into a mould a mould (2.72m
3) calculate, add 2100kg mine tailing slurry (accounting for batching gross dry weight 64.19%), 28.5kg gypsum (accounting for 1.45%) and 285kg lime powder (accounting for 14.52%), 385kg cement (accounting for 19.61%) by weight percentage successively, after fully stirring, add the aqueous solution such as aluminium powder cream that prepare in the step (4) again, after fully stirring again, by predefined mould slip is poured into a mould, quiet stop just supporting reach cut after the cutting intensity, the demoulding.
(6) be transferred to enter on the steam-cured dolly and carry out steam press maintenance in the still, the steam-cured time 7h of constant voltage, vapor pressure 1.3MPa, 195 ℃ of temperature.
Embodiment 2
(1) 60kg gypsum and 600kg lime are carried out combined grinding and reach pre-activation treatment in atomizer mill, make plaster stone ash powder, deliver in the lime powder feed bin standby through chapelet.
(2) get the 3000kg gold tailings ball mill to the mineral aggregate bucket in, progressively add ball mill and carry out levigately, control ore pulp degree is about 62.5%, ball mill limit edging adds altogether the water of about 1800kg and makes slurry, and pumps in the slip storage tank standby by slush pump.
(3) get to the sack cement of 1000kg PC32.5R in the cement storage tank standby.
(4) every cast one mould (2.72m
3) get 1.35kg aluminium powder cream, 1.15kg Chinese honey locust powder and 2.0kg self-control compound additive (rosin amine soap: triterpenoid saponin=4: 6), drop into and to pour standby in the aluminium powder storage tank (above-mentioned aluminium powder cream, suds-stabilizing agent, self-control compound additive can only on-the-spotly be equipped with and use, and are unit with the mould) into after stirring into 5% water system suspension in the aluminium powder stirrer.
(5) after the required material of above-mentioned various prescriptions is carried out batching, by processing requirement, calculate to pour into a mould a mould, add 1950kg mine tailing slurry (accounting for batching gross dry weight 62.72%), 30kg gypsum (accounting for 1.54%) and 300kg lime powder (accounting for 15.44%), 390kg cement (accounting for 20.07%) by weight percentage successively, after fully stirring, add the aqueous solution such as aluminium powder cream that prepare in the step (4) again, after fully stirring again, by predefined mould slip is poured into a mould, quiet stop just supporting reach cut after the cutting intensity, the demoulding.
(6) be transferred to enter on the steam-cured dolly and carry out steam press maintenance in the still, the steam-cured time 5h of constant voltage, vapor pressure 1.15MPa, 188 ℃ of temperature.
Embodiment 3
(1) 64kg gypsum and 690kg lime are carried out combined grinding and reach pre-activation treatment in atomizer mill, make plaster stone ash powder, deliver in the lime powder feed bin standby through chapelet.
(2) get the 3000kg gold tailings ball mill to the mineral aggregate bucket in, progressively add ball mill and carry out levigately, control ore pulp degree is about 59.5%, ball mill limit edging adds altogether the water of about 2050kg and makes slurry, and pumps in the slip storage tank standby by slush pump.
(3) get to the sack cement of 1000kg PC32.5R in the cement storage tank standby.
(4) every cast one mould (2.72m
3) get 1.3kg aluminium powder cream, 1.25kg Chinese honey locust powder and 1.8kg self-control compound additive (rosin amine soap: triterpenoid saponin=5: 5), drop into and to pour standby in the aluminium powder storage tank (above-mentioned aluminium powder cream, suds-stabilizing agent, self-control compound additive can only on-the-spotly be equipped with and use, and are unit with the mould) into after stirring into 5% water system suspension in the aluminium powder stirrer.
(5) after the required material of above-mentioned various prescriptions is carried out batching, by processing requirement, calculate to pour into a mould a mould, add 1960kg mine tailing slurry (accounting for batching gross dry weight 63.43%), 32kg gypsum (accounting for 1.74%) and 345kg lime powder (accounting for 18.79%), 290kg cement (accounting for 15.80%) by weight percentage successively, after fully stirring, add the aqueous solution such as aluminium powder cream that prepare in the step (4) again, after fully stirring again, by predefined mould slip is poured into a mould, quiet stop just supporting reach cut after the cutting intensity, the demoulding.
(6) be transferred to enter on the steam-cured dolly and carry out steam press maintenance in the still, the steam-cured time 6h of constant voltage, vapor pressure 1.5MPa, 185 ℃ of temperature.
Claims (5)
1, a kind of method of utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks, it is characterized in that with the gold tailings being main raw material and carrying out pre-activation treatment, after adding a certain amount of cement, lime, add aluminium powder cream, gypsum, suds-stabilizing agent and self-control compound additive again, be mixed with slurry jointly, through injection molding get angry with quietly stop, xeothermic precuring, cut stacking, go into still steam-cured, go out still, form vapour pressure air-entrained concrete light heat-insulation fireproof bricks at last, by weight percentage, concrete prescription is:
Gold tailings 55-75
Cement 13-25
Lime 10-19
Gypsum 1.0-3.5
Suds-stabilizing agent 0.05-0.08
Aluminium powder cream 0.05-0.08
Self-control compound additive 0.05-0.10.
2, the method for utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks according to claim 1 is characterized in that described suds-stabilizing agent is meant to draw back powder or Chinese honey locust powder.
3, the method for utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks according to claim 1, it is characterized in that described aluminium powder cream is to be atomized through high temperature by high-purity aluminium powder, with water is medium, adds special water solvent and grinds refining silver gray, the flakey powder that processes.
4, the method for utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks according to claim 1 is characterized in that described self-control compound additive is meant the mixture of rosin amine soap and triterpenoid saponin, and the ratio between it is 1: 3～3: 1.
5, the method for utilizing gold tailings to prepare vapour pressure air-entrained concrete light heat-insulation fireproof bricks according to claim 1 is characterized in that describedly going into still when steam-cured, the steam-cured time 5～7h of constant voltage, vapor pressure 1.1～1.5MPa, 190 ℃ ± 5 ℃ of temperature.
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Open date: 20081022 |