CN101769035A - Autoclaved lime-sand brick prepared with lateritic gold ore tailings and manufacturing method thereof - Google Patents
Autoclaved lime-sand brick prepared with lateritic gold ore tailings and manufacturing method thereof Download PDFInfo
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- CN101769035A CN101769035A CN200910273495A CN200910273495A CN101769035A CN 101769035 A CN101769035 A CN 101769035A CN 200910273495 A CN200910273495 A CN 200910273495A CN 200910273495 A CN200910273495 A CN 200910273495A CN 101769035 A CN101769035 A CN 101769035A
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- 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
- C04B28/18—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 mixtures of the silica-lime type
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- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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- 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
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- 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
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Abstract
The invention discloses an autoclaved lime-sand brick prepared with lateritic gold ore tailings and a manufacturing method thereof. The lime-sand brick is prepared with the following raw materials in parts by weight: 72-85 parts of gold ore tailings powders, 0-8 parts of gold ore tailings aggregates and 15-20 parts of limes or acetylene sludge. The gold ore tailings powders are the screen underflows obtained by screening the gold ore tailings with an 8 mm screen mesh; and the aggregates are the gold ore tailings grains with grain diameter of less than 8 mm prepared by screen overflows after mechanical crushing. The moisture contents of the gold ore tailings powders and the aggregates are both less than 20 percent. Uniformly mixing the raw materials in preparation, and controlling the wet basis moisture content to be at 12-20 percent; pressing to molding under the pressure of 15-25MPa; and then steam-curing the molded brick to obtain the autoclaved lime-sand brick after a standing of the molded brick for 5-48h, with the steam pressure for steam curing being controlled at 0.5MPa-1.3MPa, the temperature being controlled at 150-250 DEG C, the boost pressure of 2-4h, the pressure maintaining time being controlled to 5-8h and depressurization of 2-3h. The invention has the advantages of no sintering, low energy consumption, exhaust emission free and the like, thereby conforming to the national energy conservation and carbon emission reduction policy and solving the environmental problems generated by the industrial waste residues such as the gold ore tailings, the acetylene sludge and the like.
Description
Technical field
The invention belongs to the mine tailing waste residue resource and utilize technical field, being specifically related to a kind of is primary raw material with the lateritic gold ore tailings, cooperates the lateritic gold ore tailings Autoclaved limesand brick and the production method thereof of productions such as lime (or carbide slag).
Background technology
Gold concentrator tailings (also claiming gold tailings) is the waste residue that extracts gold from from gold mine and produce afterwards.Be treated to the master to store up at present, not only need to occupy large stretch of soil, and can bring environment pollution.
Along with country progressively strengthens protection to land resources, vitrified bond progressively is eliminated, and the substitute is no-firing brick, and its primary raw material is an industrial residue.The no-firing brick technology is taked high-pressure molding, and maintenance method is taked steam press maintenance or natural curing, is a kind of green technology that country encourages implementation.According to the chemical compound and the mineral composition of gold concentrator tailings, gold concentrator tailings also is a kind of raw material for preparing building materials.
At present, gold concentrator tailings has at the main patent documentation aspect the utilization of resources brickmaking:
Chinese patent literature " producing the carbon baking furnace flame path wall air brick " (publication number: CN101054308 with gold concentrator tailings and iron ore mine, open day on October 17th, 2007), " utilizing gold concentrator tailings to prepare the method for vapour pressure air-entrained concrete light heat-insulation fireproof bricks " (publication number: CN101289325, open day on October 22nd, 2008), and " gold concentrator tailings Autoclaved aerated concrete blocks and production technology " publication number: CN1631836, open day on June 29th, 2005) technology that relates in and raw material and the present invention have very big difference, and existing literature and patent all are based on the utilization of ore type gold concentrator tailings.By comparison, the present invention is primary raw material with the lateritic gold ore tailings, only needs to add a small amount of lime, and production technology is simpler, and needed raw material still less.
Chinese patent literature " with gold concentrator tailings producing building material " (publication number: CN1051543, open day on May 22nd, 1991) in, make main raw material with gold concentrator tailings, add quicklime and gypsum behind a small amount of grinding, in mixer, add water and stir, through digestion, secondary stir, compression moulding, in still kettle through increasing temperature and pressure, the steam press maintenance of constant temperature and pressure and decrease temperature and pressure makes needed plastics products for building.Handled mine tailing is the rock type mine tailing that originates in granite and the zone of fracture thereof in this patent documentation, is similar to river sand, and is different with the rock type mine tailing on physicochemical properties with the lateritic gold ore tailings among the present invention.Make a concrete analysis of as follows:
Domestic most of gold mine belongs to ore type gold mine, the particle diameter of the gold concentrator tailings of process gravity separation method or extract technology is general tiny evenly, and shape and character and quartz sand are approaching, can directly use as fines, perhaps be directly used in the production of Autoclaved limesand brick as siliceous material.Point out in the patent documentation (CN1051543), the mine tailing of its processing is the rock type mine tailing that originates in granite and the zone of fracture thereof, the mine tailing particle diameter accounts for 30～60% less than the particle of 0.15mm, 0.15mm～2.0mm accounts for 40～70%, its main component is quartzy 40～70%, feldspar 20～30%, mica 3～5%, landwaste 5～10%.
Red clay type gold mine belongs to the severely-weathered a kind of newtype gold deposit that remains thereby form, and is forming, existing in nature a great difference with ore type gold mine.The lateritic gold ore tailings basement rock mostly is the sedimentary rocks that contain carbonate rock, and growing along the fracture structure in the basement rock has primary gold oreization or gold deposit.1980, the large-scale laterite type of Bo Dingdun (Boddington) gold mine was at first found in the Western Australia, and China at first found that at the She Wushan of Hubei Jiayu similar hypergene is weathered into because of gold deposit in 1989.Snake room Gold Mine is the second in the world example, the open-air gold mine of laterite type of Asia maximum.Lateritic gold ore tailings used in the present invention promptly comes from snake room, Jiayu County, Hubei Province Gold Mine Co., Ltd.With different in the patent documentation (CN1051543) be, based on kaolinite and illite, inferior is goethite and chlorite in the snake room Gold Mine, a small amount of gibbsite, and micro-montmorillonite and anatase are arranged.Mineralogical composition comprises the residual quartz of the oxide of clay mineral, iron and aluminium and hydroxide, precious metal minerals and basement rock, feldspar etc.Chemical composition is mainly SiO
2, Al
2O
3And Fe
2O
3, inferior is MnO
2And TiO
2The leaching of rainwater is removed silicon a large amount of in the laterite type gold mine, easier molten metal ion, and insoluble matter (as iron) concentrates relatively, and clay is incarnadined by iron.Gold is in laterization desilication process, and the same richness that obtains with iron is amassed, and clay has the effect of ADSORPTION OF GOLD.
In addition, contain a large amount of clays in the lateritic gold ore tailings, be mingled with a spot of country rock and horsestone, and the particle size of country rock and horsestone and distributed number are very inhomogeneous.Particle size range accounts for 2.90wt% greater than country rock and the horsestone of 100mm, and particle diameter 30-100mm accounts for 4.73wt%, and particle diameter 10-30mm accounts for 18.53wt%, and particle diameter 1-10mm only accounts for 14.90wt%, and this has brought a lot of difficulties for the mine tailing recycling.
Because two kinds of mine tailings have different physicochemical properties, if the prescription and the technology that adopt existing patent documentation to provide directly apply to lateritic gold ore tailings, maybe can't obtain qualified product, maybe need to consume auxiliary materials such as a large amount of cement.
Summary of the invention
The object of the present invention is to provide a kind of lateritic gold ore tailings Autoclaved limesand brick, this product can reach corresponding national standards; The present invention also provides the production method of this product, and this method can be eliminated the pollution of waste residue to environment effectively.
A kind of lateritic gold ore tailings Autoclaved limesand brick provided by the invention is characterized in that it is made by the raw material of following weight quota: gold ore tailings powders 72-85 part, gold concentrator tailings aggregate 0-8 part, lime or carbide slag 15-20 part; Wherein gold ore tailings powders is meant that gold concentrator tailings sieves the screenings that preliminary treatment obtains by the 8mm screen cloth; The gold concentrator tailings aggregate is the particle diameter that obtained after Mechanical Crushing by the oversize gold ore tailings grains less than 8mm, and the moisture content of gold ore tailings powders and gold concentrator tailings aggregate is all less than 20%.
The production method of above-mentioned gold concentrator tailings Autoclaved limesand brick, its step comprises:
(1), with the powder that obtains after the gold concentrator tailings screening, the aggregate that obtains after the Mechanical Crushing, and lime or carbide slag, according to mixing after the proportioning weighing, control wet basis moisture content is at 12-20% in the mixed process;
(2), with above-mentioned compound compression moulding, the pressure of the moulding of brick is at 15MPa-25MPa;
(3), mould brick leaves standstill after 5 hours-48 hours and carries out the steam-cured Autoclaved limesand brick that obtains, steam-cured steam pressure is controlled at 0.5MPa-1.3MPa, and temperature is controlled at 150 ℃-250 ℃, boosts 2-4 hour, dwell time was controlled at 5 hours-8 hours, step-down 2-3 hour.
The present invention is a raw material with gold ore tailings powders, gold concentrator tailings aggregate, lime (or carbide slag), makes the Autoclaved limesand brick product after pretreatment of raw material, metering, batching, stirring, rolling activation, compression moulding, steam curing at high pressure.
The present invention has following technical characterstic:
(1) based on the composition and the size distribution characteristics of lateritic gold ore tailings, the broken technical thought of utilizing behind the first physical separation is proposed, help eliminating the adverse effect of the horsestone in the mine tailing;
(2) make full use of siliceous composition in the gold concentrator tailings, utilize the silico-calcium reaction mechanism under the high-temperature and high-pressure conditions, form based on the intensity of taking off vigorous mullite and contribute body, stable in properties;
(3) powder and the aggregate with lateritic gold ore tailings is primary raw material, only adds a small amount of quicklime
(or carbide slag) makes qualified Autoclaved limesand brick, and production technology is simple, low production cost;
(4) in the gold concentrator tailings steam-pressing brisk, can reach more than 80%, can effectively consume the mine tailing mountain, have good benefits in environment and economic benefit with the volume of lateritic gold ore tailings raw material.
Properties of product of the present invention are measured: assay method with reference to " the brick experimental technique of building a wall " (GB/T2542-2003), performance judgment is with reference to " Autoclaved limesand brick " (GB11945-1999).
Description of drawings
Accompanying drawing is gold concentrator tailings sorting pretreatment process figure of the present invention.
The specific embodiment
In the following case study on implementation, the original moisture content about 30% of lateritic gold ore tailings, after storing up 1 year in the open, moisture content is reduced to below 20%.Gold concentrator tailings at first adopts 8mm aperture screen cloth to sieve preliminary treatment, and screenings is called gold ore tailings powders, is made up of a large amount of clay matter mine tailings and a small amount of gold concentrator tailings fine grained; Oversize is bulk country rock and horsestone, is prepared into the gold ore tailings grains of particle diameter less than 8mm after Mechanical Crushing again, is called the gold concentrator tailings aggregate.In fact the volume of quicklime is decided according to the silicone content of coarse-fine aggregate, as quicklime the active calcium ion content＞60wt%; When the moisture content of carbide slag＜35%, effective CaO content＞55wt%, more a step is improved the anti-freezing property of brick.
The present invention is further detailed explanation below in conjunction with example.
Embodiment 1:
The raw material proportioning of this example is:
Gold ore tailings powders: 80 parts
Gold concentrator tailings aggregate: 0 part
Lime: 20 parts
Production method is:
1, pretreated gold ore tailings powders, gold concentrator tailings aggregate, lime mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 14%; On former, use the pressure compression moulding of 15MPa after stirring.
2, mould brick is inserted in the still kettle after leaving standstill 5h, and steam pressure is 0.8MPa, and steam-cured temperature is 180 ℃, and conservation system is and boosts 3 hours, at 0.8MPa, and 180 ℃ of pressurizes 5 hours, step-down 2 hours promptly obtains finished product after steam-cured.
50 gold concentrator tailings Autoclaved limesand bricks in this example, product specification 240 * 115 * 53 (mm), carried out Performance Detection (check numbering No.08C-07W020) through product quality supervision and inspection building materials station, Wuhan, testing result shows: its physical size is qualified, compressive strength average out to 25.20MPa, rupture strength average out to 4.08MPa, compressive strength is 19.40MPa after the freezing-thawing test, the dry mass loss late 0.6-0.9% of monolithic brick, radionuclide meets construction main body material requirement among the GB6566-2001, drying shrinkage value is 0.61mm/m, and the carbonization coefficient is 0.97.Environment Monitoring Central Station, Hubei Prov.'s testing result, cyanide content is far below hazardous waste GB5085.3-2007 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick of this example has all reached the requirement of MU20 high-class product in the GB11945-1999 standard.
Embodiment 2:
The raw material proportioning of this example is:
Gold ore tailings powders: 80 parts
Gold concentrator tailings aggregate: 1 part
Carbide slag: 19 parts
The preparation method is:
Gold concentrator tailings is through artificial screening, and particle diameter is less than 8mm, moisture content 12%; Carbide slag moisture content 34% directly uses; Pretreated gold ore tailings powders, gold concentrator tailings aggregate, carbide slag mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 15%; Stir the back on former with the pressure compression moulding of 16-18MPa, steam-cured 8h in steam-cured device, steam pressure are 0.9MPa, temperature is 190 ℃, obtains finished product after steam-cured.
50 gold concentrator tailings Autoclaved limesand bricks in this example, product is delivered to building materials industry product quality supervision and inspection station, Henan Province and has been carried out Performance Detection (detection numbering: 080813010), product specification 240 * 115 * 53 (mm), physical size is qualified, compressive strength average out to 17.8MPa, rupture strength average out to 3.27MPa, compressive strength is 14.1MPa after the freezing-thawing test, the dry mass loss late 1.6% of monolithic brick, radioactivity is qualified, drying shrinkage value is 0.56mm/m, and the carbonization coefficient is 0.91, water absorption rate 21.3%.Testing result shows that bulk density, water absorption rate meet the GB/T2542-2003 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick of this example has all reached the requirement of MU10 high-class product in the GB11945-1999 standard.
Embodiment 3:
The raw material proportioning of this example is:
Gold ore tailings powders: 80 parts
Gold concentrator tailings aggregate: 5 parts
Lime: 15 parts
The preparation method is:
Pretreated gold ore tailings powders, gold concentrator tailings aggregate, lime mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 20%; Stir the back on former with the pressure compression moulding of 25MPa, leave standstill behind the 48h steam-cured 8h in steam-cured device, steam pressure is 1.3MPa, temperature is 250 ℃, obtains finished product after steam-cured.
Gold concentrator tailings Autoclaved limesand brick in this example, physical size is qualified, compressive strength average out to 16.43MPa, rupture strength average out to 2.69MPa, the dry mass loss late 0.6-0.9% of monolithic brick, radioactivity is qualified, and drying shrinkage value is 0.60mm/m, the carbonization coefficient is 0.97, and cyanide content is far below hazardous waste GB5085.3-2007 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick brick of this example has all reached the requirement of MU10 high-class product in the GB11945-1999 standard.
Embodiment 4:
The raw material proportioning of this example is:
Gold ore tailings powders: 78 parts
Gold concentrator tailings aggregate: 4 parts
Carbide slag: 18 parts
Production method is:
1, lateritic gold ore tailings is stored up more than 1 year in the open, through simple airing, sorting preliminary treatment, makes its uniform particles, and particle diameter is no more than 8mm.
2, pretreated gold ore tailings powders, gold concentrator tailings aggregate, carbide slag mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 18%; On former, use the pressure compression moulding of 15MPa after stirring.
3, mould brick is inserted in the still kettle after leaving standstill 5h, and steam pressure is 0.5MPa, and steam-cured temperature is 150 ℃, and conservation system is and boosts 2 hours, at 0.5MPa, and 250 ℃ of pressurizes 8 hours, step-down 2 hours promptly obtains finished product after steam-cured.
Gold concentrator tailings Autoclaved limesand brick in this example, its physical size is qualified, compressive strength average out to 16.59MPa, rupture strength average out to 2.62MPa, the dry mass loss late 0.6-0.9% of monolithic brick, radioactivity is qualified, and drying shrinkage value is 0.60mm/m, the carbonization coefficient is 0.97, and cyanide content is far below hazardous waste GB5085.3-2007 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick of this example has all reached the requirement of MU10 high-class product in the GB11945-1999 standard.
Embodiment 5:
The raw material proportioning of this example is:
Gold ore tailings powders: 75 parts
Gold concentrator tailings aggregate: 5 parts
Lime: 20 parts
Production method is:
1, lateritic gold ore tailings is stored up more than 1 year in the open, through simple airing, sorting preliminary treatment, makes its uniform particles, and particle diameter is no more than 8mm.
2, pretreated gold ore tailings powders, gold concentrator tailings aggregate, lime mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 15%; On former, use the pressure compression moulding of 15MPa after stirring.
3, mould brick is inserted in the still kettle after leaving standstill 5h, and steam pressure is 0.5MPa, and steam-cured temperature is 150 ℃, and conservation system is and boosts 3 hours, at 1MPa, and 150 ℃ of pressurizes 8 hours, step-down 3 hours promptly obtains finished product after steam-cured.
Gold concentrator tailings Autoclaved limesand brick in this example, its physical size is qualified, compressive strength average out to 18.30MPa, rupture strength average out to 2.34MPa, the dry mass loss late 0.6-0.9% of monolithic brick, radioactivity is qualified, and drying shrinkage value is 0.60mm/m, the carbonization coefficient is 0.97, and cyanide content is far below hazardous waste GB5085.3-2007 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick of this example has all reached the requirement of MU10 high-class product in the GB11945-1999 standard.
Embodiment 6:
The raw material proportioning of this example is:
Gold ore tailings powders: 72 parts
Gold concentrator tailings aggregate: 8 parts
Carbide slag: 20 parts
Production method is:
1, lateritic gold ore tailings is stored up more than 1 year in the open, through simple airing, sorting preliminary treatment, makes its uniform particles, and particle diameter is no more than 8mm.
2, pretreated gold ore tailings powders, gold concentrator tailings aggregate, carbide slag mix after according to the proportioning weighing, add amount of water in the mixed process, and the wet basis moisture content is controlled at 18%; On former, use the pressure compression moulding of 15MPa after stirring.
3, mould brick is inserted in the still kettle after leaving standstill 5h, and steam pressure is 0.5MPa, and steam-cured temperature is 150 ℃, and conservation system is and boosts 4 hours, at 0.9MPa, and 200 ℃ of pressurizes 6 hours, step-down 2 hours promptly obtains finished product after steam-cured.
Gold concentrator tailings Autoclaved limesand brick in this example, its physical size is qualified, compressive strength average out to 16.59MPa, rupture strength average out to 2.65MPa, the dry mass loss late 0.6-0.9% of monolithic brick, radioactivity is qualified, and drying shrinkage value is 0.60mm/m, the carbonization coefficient is 0.97, and cyanide content is far below hazardous waste GB5085.3-2007 standard.
By above-mentioned performance test results as can be seen, the every performance of gold concentrator tailings Autoclaved limesand brick of this example has all reached the requirement of product such as MU10 in the GB11945-1999 standard.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment.So everyly do not break away from the equivalence of finishing under the spirit disclosed in this invention or revise, all fall into the scope of protection of the invention.
Claims (3)
1. a lateritic gold ore tailings Autoclaved limesand brick is characterized in that it is made by the raw material of following weight quota: gold ore tailings powders 72-85 part, gold concentrator tailings aggregate 0-8 part, lime or carbide slag 15-20 part; Wherein gold ore tailings powders is meant that gold concentrator tailings sieves the screenings that preliminary treatment obtains by the 8mm screen cloth; The gold concentrator tailings aggregate is the particle diameter that obtained after Mechanical Crushing by the oversize gold ore tailings grains less than 8mm, and the moisture content of gold ore tailings powders and gold concentrator tailings aggregate is all less than 20%.
2. gold concentrator tailings Autoclaved limesand brick according to claim 1 is characterized in that: effective CaO mass content＞60% in the lime; Carbide slag moisture content＜35%, effective CaO mass content＞55% in the carbide slag.
3. according to the production method of claim 1 or 2 described gold concentrator tailings Autoclaved limesand bricks, its step comprises:
(1), raw material is mixed after according to the proportioning weighing, control wet basis moisture content is at 12-20% in the mixed process;
(2), with above-mentioned compound compression moulding, the pressure of the moulding of brick is at 15MPa-25MPa;
(3), mould brick leaves standstill after 5 hours-48 hours and carries out the steam-cured Autoclaved limesand brick that obtains, steam-cured steam pressure is controlled at 0.5MPa-1.3MPa, and temperature is controlled at 150 ℃-250 ℃, boosts 2-4 hour, dwell time was controlled at 5 hours-8 hours, step-down 2-3 hour.
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|---|---|---|---|
| CN2009102734954A CN101769035B (en) | 2009-12-31 | 2009-12-31 | Autoclaved lime-sand brick prepared with lateritic gold ore tailings and manufacturing method thereof |
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| CN102424550A (en) * | 2011-09-06 | 2012-04-25 | 池州西恩新材料科技有限公司 | Laterite slag baking-free brick and preparation method thereof |
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| CN114276056A (en) * | 2021-12-21 | 2022-04-05 | 邯郸市建业建设工程质量检测有限公司 | Method for preparing autoclaved sand-lime brick by synergistic utilization of multiple solid wastes |
| CN115611559A (en) * | 2022-09-23 | 2023-01-17 | 华新水泥股份有限公司 | Cement-free environment-friendly baking-free brick and preparation method thereof |
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| CN102424550A (en) * | 2011-09-06 | 2012-04-25 | 池州西恩新材料科技有限公司 | Laterite slag baking-free brick and preparation method thereof |
| CN102424550B (en) * | 2011-09-06 | 2013-06-19 | 池州西恩新材料科技有限公司 | Laterite slag baking-free brick and preparation method thereof |
| TWI513884B (en) * | 2013-11-15 | 2015-12-21 | Hsiu Hua Hsu | Eco-friendly mud-brick and process for laying the same to unseasoned concrete to solidify like pavement bricks |
| CN104876534B (en) * | 2014-05-12 | 2019-03-15 | 河北工程大学 | A method of steam-pressing brisk is prepared using Tungsten tailing and tungsten ore barren rock |
| CN107382359A (en) * | 2017-08-31 | 2017-11-24 | 华中科技大学 | A kind of method and its product with lateritic gold ore tailings baking ceramsite |
| CN107382359B (en) * | 2017-08-31 | 2018-03-09 | 华中科技大学 | A kind of method and its product with lateritic gold ore tailings baking ceramsite |
| CN109369128A (en) * | 2018-10-19 | 2019-02-22 | 户县融基建材有限责任公司 | A kind of method and its building block using building waste and mill tailings preparation building block |
| CN112408898A (en) * | 2020-11-26 | 2021-02-26 | 华新水泥股份有限公司 | Process for producing baking-free type filter-pressing soil tailing bricks through cogeneration and co-maintenance of cement plant |
| CN114276056A (en) * | 2021-12-21 | 2022-04-05 | 邯郸市建业建设工程质量检测有限公司 | Method for preparing autoclaved sand-lime brick by synergistic utilization of multiple solid wastes |
| CN115611559A (en) * | 2022-09-23 | 2023-01-17 | 华新水泥股份有限公司 | Cement-free environment-friendly baking-free brick and preparation method thereof |
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