CN107954679A - A kind of method of the secondary tailings production autoclave aerated concrete building block of copper ashes - Google Patents
A kind of method of the secondary tailings production autoclave aerated concrete building block of copper ashes Download PDFInfo
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- CN107954679A CN107954679A CN201711315241.5A CN201711315241A CN107954679A CN 107954679 A CN107954679 A CN 107954679A CN 201711315241 A CN201711315241 A CN 201711315241A CN 107954679 A CN107954679 A CN 107954679A
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- copper ashes
- carbide slag
- secondary tailings
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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
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
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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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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method of the secondary tailings production autoclave aerated concrete building block of copper ashes, including：Pretreatment of raw material, dispensing, stirring, cast it is quiet stop maintenance, form removal cutting, steam press maintenance, obtain autoclave aerated concrete building block.The present invention is by handling the secondary tailings of copper ashes, it can be achieved that waste comprehensive reutilization, is advantageously implemented circular economy, energy-saving and emission-reduction；By handling the secondary tailings of copper ashes, obtained steam-pressing aero-concrete can have preferable intensity.
Description
Technical field
The present invention relates to nonferrous metallurgy industry solid waste to handle Application way technical field, is used more particularly to one kind
The method of the secondary tailings production autoclave aerated concrete building block of copper ashes.
Background technology
Resource and environment is the two large problems that mankind nowadays society faces, social progress and expanding economy, is being consumed
Vast resources at the same time, also result in the pollution of environment, and the tailing after METAL EXTRACTION is one of various pollution sources.State in recent years
Family has put into effect a series of law, regulation, strengthens the requirement comprehensively utilized to solid waste.Printed and distributed according to Ministry of Industry and Information
《Industrial Green development plan (2016-2020)》Notice, " according to minimizing, recycling, recycling principle, Speed-up Establishment
Circular industry system, carries forward vigorously industrial solid wastes comprehensive utilization.Attached most importance to high-valued, scale, intensive utilization,
Around industrial solid wastes such as tailing, metallurgical slag, metallurgical dust sludge, red mud, industry by-product gypsum, chemical sludges, a collection of elder generation is promoted
Equipped into applicable technology, make complete industrial solid wastes comprehensive utilization industrial chain ".
The secondary tailings of copper ashes, which is copper ashes by rotary hearth furnace, to be reduced directly-element such as mill ore magnetic selection technique recycling zinc, lead, iron after
Secondary tailings, often handle one ton of copper ashes will produce about 0.4 ton of secondary tailings of copper ashes.Due to thinner (- 200 mesh of its granularity
More than 90%), complicated component.If simple stockpiling, not only pollutes environment, and can cause the waste of resource, can also influence to drop
The Expected Results of low copper ashes comprehensive utilization project.Iron content is generally below 10% in the secondary tailings of copper ashes, SiO2Content is about
60%.
Carbide slag is that calcium carbide hydrolysis obtains the waste residue using calcium hydroxide as main component after acetylene gas, its main component is
Calcium hydroxide.Accumulation not only takes a large amount of soils to carbide slag waste material for a long time, and has serious corrosion function to soil.It is how comprehensive
Conjunction efficiently uses these waste materials, is current urgent problem.
Due to the high speed development of Re-search on Urbanization construction and infrastructure construction so that the demand of construction material is increasingly increased
Greatly, Development of Novel building materials are the development trends of Chinese building material industry, and air entrained concrete is most representative in New Building Materials
One kind.Air entrained concrete is using siliceous material and calcareous material as primary raw material, and adds foaming agent and gets angry, by dispensing,
Stirring, cast, it is quiet stop, cut, steam pressure, the light porous silicate product made of technical process such as maintenance.Steam pressurized coagulation
Native produce energy saving, insulation, environmental protection, processing and using etc. be much better than and be currently being widely used hollow brick and hollow building
Block.Air entrained concrete has the advantages that light porous, insulation, can process and not burn, and the block of different size can be made
Block, plate and heat insulating products, are widely used in industry and the load-bearing of civil buildings or go along with sb. to guard him interstitital texture, be subject to countries in the world to build
The most attention of industry is built, becomes a kind of construction material that many countries widely popularize and develop.
The secondary tailing of copper ashes is mainly by SiO2Formed with the nonmetallic minerals of silicates, can be used as siliceous raw material with addition of
Carbide slag produces air-entrained concrete building block.SiO in the secondary tailing of copper ashes2It can be produced with carbide slag and hydrated cementitious a large amount of
Pozzolanic reaction secondary response occurs for high alkalinity hydrated calcium silicate and free calcium oxide, generates low alkalinity hydrated calcium silicate, makes to mix
The quality of gum material in solidifying soil improves, quantity increase.Air-entrained concrete building block is produced by raw material of the secondary tailing of copper ashes, no
Land occupation caused by only alleviating the accumulation of copper ashes, the problems such as polluting environment, and significant increase copper ashes secondary tailing
Utilize added value.But in the prior art, still without a kind of easy to operate, economical, and the high production of utilization of secondary tailing
Autoclave aerated concrete building block method.
The content of the invention
The technical problems to be solved by the invention, which are copper ashes by rotary hearth furnace, to be reduced directly-mill ore magnetic selection after secondary tailings
Utilization difficulty it is big the problem of, so as to reach comprehensive utilization of waste materials, realize that circular economy, energy-saving and emission-reduction obtain purpose.
Copper ashes is reduced directly by rotary hearth furnace-mill ore magnetic selection after secondary tailings SiO2Content is higher, and predominantly amorphous
State material exists, and is very suitable for being used as siliceous material production autoclave aerated concrete building block, had so both solved secondary tail
The problem that slag utilizes, also provides suitable raw material for air-entrained concrete building block.
For this reason, the invention discloses a kind of method of the secondary tailings production autoclave aerated concrete building block of copper ashes, including with
Lower step：
S1, pretreatment of raw material：Carbide slag slurries are made in carbide slag addition hot water；
S2, dispensing：The secondary tailings of the copper ashes, the carbide slag slurries, cement, desulfurated plaster are conveyed by weight percentage
Enter and mixed material is mixed to obtain in agitator tank；
S3, stirring：The mixed material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank and obtains slurry；
S4, cast-quiet stop conserving：The slip casting is entered in mould, the mould is moved to maintenance by be cast finish
Room is quiet to stop conserving to obtain base substrate；
S5, form removal cutting：The base substrate form removal is cut when the base substrate has certain degree of hardness；
S6, steam press maintenance：The base substrate that form removal is cut through is pushed into progress steam press maintenance in still kettle afterwards and obtains steam pressure
Air-entrained concrete building block.
Further, hot water temperature described in step S1 is 75-85 DEG C.
Further, the secondary tailings of the copper ashes be reduced directly by rotary hearth furnace for copper tailings-mill ore magnetic selection after obtain
Slag, wherein SiO2Mass percentage 55-65%.
Further, the secondary tailings granularity of the copper ashes is less than 200 mesh accountings more than 90%.
Further, Ca (OH) in the carbide slag2Mass percentage be not less than 75%, the carbide slag at a high speed
Hot water is added in pulper carbide slag slurries are made.
Further, the cement is PO42.5 Portland cements, its presetting period is 118min, final setting time
190min。
Further, activated aluminum mass percentage is more than 85% in the aluminium powder cream, and get angry 20~30min of time.
Further, in terms of mass parts, secondary tailings 55-60 parts of the copper ashes, the carbide slag 20- in carbide slag slurries
25 parts, described cement 10-15 parts, described gypsum 3-5 parts.
Further, aluminium powder cream addition described in step S3 is the 0.08-0.12% of the mixed material quality, is added
After stir 0.5-2min, pulp density is calculated in mass percent in 55-65% in whipping process, and temperature control is at 60-65 DEG C.
Further, the quiet temperature for stopping maintenance is 65-75 DEG C described in step S4, when curing time is 1-3 small.
Further, autoclaved schedule described in step S6 heats up to vacuumize 0.5h until -0.4 to -0.5 atmospheric pressure
When 1.5-2 is small, pressure 1.2-1.3MPa, 180-200 DEG C of temperature, when constant temperature time 8-10 is small；Room is cooled to when cooling 2 is small afterwards
Temperature.
Why steam-pressing aero-concrete can have certain intensity, its basic reason is due to steam-pressing aero-concrete
Basic composition material in calcareous material and siliceous material interact under the conditions of steam press maintenance, calcium oxide and silica
Between carry out the result that hydrothermal synthesis reaction produces new hydrated product.Therefore, in order to obtain necessary hydrated product (including matter
Amount and quantity), it is necessary to make the calcium oxide (CaO) and silica (SiO in raw material2) certain ratio is maintained between component,
Sufficiently effective reaction can be carried out, so as to achieve the purpose that to make air entrained concrete obtain intensity.We are steam pressurized
This proportionate relationship between calcium oxide and silica in concrete raw material, is known as the calcium silicon of steam-pressing aero-concrete
Than.It is CaO and SiO in steam-pressing aero-concrete composition material2Summation mole ratio, be known as calcium silicon ratio, it is general to require
Calcium silicon ratio is 0.8 or so.Ca (OH) in carbide slag2Can be with the SiO in secondary tailings2And silicate reaction, add steam pressure
Gas concrete can have certain intensity.
The beneficial effects of the present invention are：
1st, by being handled the secondary tailings of copper ashes, it can be achieved that waste comprehensive reutilization, is advantageously implemented circulation warp
Ji, energy-saving and emission-reduction；
2nd, by handling the secondary tailings of copper ashes, obtained steam-pressing aero-concrete can have preferable intensity.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the flow diagram of the method for the secondary tailings production autoclave aerated concrete building block of copper ashes in the present invention.
Embodiment
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the drawings, wherein identical from beginning to end
Or similar label represents same or similar element or has the function of same or like element.Retouched below with reference to attached drawing
The embodiment stated is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
Attached drawing 1 according to the present invention, the method for the secondary tailings production autoclave aerated concrete building block of copper ashes, including following step
Suddenly：
S1, pretreatment of raw material：Carbide slag slurries are made in carbide slag addition hot water；
S2, dispensing：The secondary tailings of the copper ashes, the carbide slag slurries, cement, desulfurated plaster are conveyed by weight percentage
Enter and mixed material is mixed to obtain in agitator tank；
S3, stirring：The mixed material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank and obtains slurry；
S4, cast-quiet stop conserving：The slip casting is entered in mould, the mould is moved to maintenance by be cast finish
Room is quiet to stop conserving to obtain base substrate；
S5, form removal cutting：The base substrate form removal is cut when the base substrate has certain degree of hardness；
S6, steam press maintenance：The base substrate that form removal is cut through is pushed into progress steam press maintenance in still kettle afterwards and obtains steam pressure
Air-entrained concrete building block.
Specifically, hot water temperature described in step S1 is 75-85 DEG C.
Specifically, the secondary tailings of the copper ashes be reduced directly by rotary hearth furnace for copper tailings-mill ore magnetic selection after obtained slag,
Wherein SiO2Mass percentage 55-65%.
Specifically, the secondary tailings granularity of the copper ashes accounts for more than 90% less than 200 mesh.
Specifically, Ca (OH) in the carbide slag2Mass percentage be not less than 75%, the carbide slag high speed make
Hot water is added in pulp grinder carbide slag slurries are made.
Specifically, the cement is PO42.5 Portland cements, its presetting period is 118min, final setting time
190min。
Specifically, activated aluminum mass percentage is more than 85% in the aluminium powder cream, and get angry 20~30min of time.
Specifically, in terms of mass parts, secondary tailings 55-60 parts of the copper ashes, the carbide slag 20-25 in carbide slag slurries
Part, described cement 10-15 parts, described gypsum 3-5 parts.
Specifically, aluminium powder cream addition described in step S3 is the 0.08-0.12% of the mixed material quality, after addition
0.5-2min is stirred, pulp density is calculated in mass percent in 55-65% in whipping process, and temperature control is at 60-65 DEG C.
Specifically, the quiet temperature for stopping maintenance is 65-75 DEG C described in step S4, when curing time is 1-3 small.
Specifically, autoclaved schedule described in step S6 for vacuumize 0.5 it is small when until -0.4 to -0.5 atmospheric pressure, heating
When 1.5-2 is small, pressure 1.2-1.3MPa, 180-200 DEG C of temperature, when constant temperature time 8-10 is small；Room is cooled to when cooling 2 is small afterwards
Temperature.
Specific embodiment
Embodiment 1
(1) pretreatment of raw material：Slurry is made in carbide slag plus 80 DEG C of hot water；
(2) dispensing：The secondary tailings of copper ashes, carbide slag, cement, desulfurated plaster are conveyed into agitator tank by mass parts ratio and mixed
Close, its mass parts ratio is：55 parts of the secondary tailings of copper ashes, 25 parts of carbide slag, 15 parts of cement, 5 parts of gypsum, adjustment pulp density are allowed to
Ultimate density is 60%, and temperature control is at 65 DEG C；
(3) stir：Material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank, addition is mixed material
0.10%, 1min is stirred after addition, get angry time 30min；
(4) cast-quiet stop conserving：Slip casting is entered in mould, mould is moved into fog room after being poured, at 75 DEG C
At a temperature of it is quiet stop conserving, 2 it is small when after form removal cutting is carried out to it when base substrate has certain degree of hardness；
(5) form removal is cut：Form removal cutting is carried out to it when base substrate has certain degree of hardness in maintenance end；
(6) steam press maintenance：Base substrate is pushed into still kettle after cutting technique and carries out steam press maintenance, autoclaved schedule is to vacuumize
0.5 it is small when until -0.4 to -0.5 atmospheric pressure, when heating 1.5 is small, pressure 1.3MPa, 200 DEG C of temperature, when constant temperature time 8 is small；It is cold
But 2 hours to room temperature, up to product.
With reference to national standard《Steam-pressing aero-concrete method for testing performance (GB/T11969-2008)》, the dry density of product is：
495kg/m3, compression strength 3.5Mpa, reaches according to the performance indicator of the air-entrained concrete building block of examples detailed above production
《GB11968-2006 autoclave aerated concrete building blocks》The standard of B05 high-class products building block in standard.
Embodiment 2
(1) pretreatment of raw material：Slurry is made in carbide slag plus 75 DEG C of hot water；
(2) dispensing：The secondary tailings of copper ashes, carbide slag, cement, desulfurated plaster are conveyed into agitator tank by mass parts ratio and mixed
Close, its mass parts ratio is：60 parts of the secondary tailings of copper ashes, 20 parts of carbide slag, 12 parts of cement, 3 parts of gypsum, adjustment pulp density are allowed to
Ultimate density is 55%, and temperature control is at 60 DEG C；
(3) stir：Material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank, addition is mixture
0.08%, 1.5min is stirred after addition, get angry time 20min；
(4) cast-quiet stop conserving：Slip casting is entered in mould, mould is moved into fog room after being poured, at 70 DEG C
At a temperature of it is quiet stop conserving, 1 it is small when after form removal cutting is carried out to it when base substrate has certain degree of hardness；
(5) form removal is cut：Form removal cutting is carried out to it when base substrate has certain degree of hardness in maintenance end；
(6) steam press maintenance：Base substrate is pushed into still kettle after cutting technique and carries out steam press maintenance, autoclaved schedule is to vacuumize
0.5 it is small when until -0.4 to -0.5 atmospheric pressure, when heating 1.5 is small, pressure 1.25MPa, 195 DEG C of temperature, when constant temperature time 9 is small；
2 hours are cooled down to room temperature, up to product.
With reference to national standard《Steam-pressing aero-concrete method for testing performance (GB/T11969-2008)》, the dry density of product is：
510kg/m3, compression strength 3.0Mpa, reaches according to the performance indicator of the air-entrained concrete building block of examples detailed above production
《GB11968-2006 autoclave aerated concrete building blocks》The standard of B05 certified products building block in standard.
Embodiment 3
(1) pretreatment of raw material：Slurry is made in carbide slag plus 85 DEG C of hot water；
(2) dispensing：The secondary tailings of copper ashes, carbide slag, cement, desulfurated plaster are conveyed into agitator tank by mass parts ratio and mixed
Close, its mass parts ratio is：58 parts of the secondary tailings of copper ashes, 22 parts of carbide slag, 15 parts of cement, 5 parts of gypsum, adjustment pulp density are allowed to
Ultimate density is in the range of 60%, and temperature control is at 63 DEG C；
(3) stir：Material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank, addition is mixture
0.12%, 1min is stirred after addition, get angry time 20min；
(4) cast-quiet stop conserving：Slip casting is entered in mould, mould is moved into fog room after being poured, at 65 DEG C
At a temperature of it is quiet stop conserving, 1.5 it is small when after it is cut when base substrate has certain degree of hardness；
(5) form removal is cut：Form removal cutting is carried out to it when base substrate has certain degree of hardness in maintenance end；
(6) steam press maintenance：Base substrate is pushed into still kettle after cutting technique and carries out steam press maintenance, autoclaved schedule is to vacuumize
0.5 it is small when until -0.4 to -0.5 atmospheric pressure, when heating 1.5 is small, pressure 1.2MPa, 185 DEG C of temperature, when constant temperature time 10 is small；
2 hours are cooled down to room temperature, up to product.
With reference to national standard《Steam-pressing aero-concrete method for testing performance (GB/T11969-2008)》, the dry density of product is：
515kg/m3, compression strength 3.2Mpa, reaches according to the performance indicator of the air-entrained concrete building block of examples detailed above production
《GB11968-2006 autoclave aerated concrete building blocks》The standard of B05 certified products building block in standard.
Embodiment 4
(1) pretreatment of raw material：Slurry is made in carbide slag plus 79 DEG C of hot water；
(2) dispensing：The secondary tailings of copper ashes, carbide slag, cement, desulfurated plaster are conveyed into agitator tank by mass parts ratio and mixed
Close, its mass parts ratio is：60 parts of the secondary tailings of copper ashes, 25 parts of carbide slag, 10 parts of cement, 3 parts of gypsum, adjustment pulp density are allowed to
Ultimate density is in the range of 60%, and temperature control is at 62 DEG C；
(3) stir：Material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank, addition is mixture
0.12%, 0.5min is stirred after addition, get angry time 25min；
(4) cast-quiet stop conserving：Slip casting is entered in mould, mould is moved into fog room after being poured, at 65 DEG C
At a temperature of it is quiet stop conserving, 3 it is small when after it is cut when base substrate has certain degree of hardness；
(5) form removal is cut：Form removal cutting is carried out to it when base substrate has certain degree of hardness in maintenance end；
(6) steam press maintenance：Base substrate is pushed into still kettle after cutting technique and carries out steam press maintenance, autoclaved schedule is to vacuumize
0.5 it is small when until -0.4 to -0.5 atmospheric pressure, when heating 1.7 is small, pressure 1.2MPa, 185 DEG C of temperature, when constant temperature time 9 is small；It is cold
But 2 hours to room temperature, up to product.
With reference to national standard《Steam-pressing aero-concrete method for testing performance (GB/T11969-2008)》, the dry density of product is：
505kg/m3, compression strength 2.9Mpa, reaches according to the performance indicator of the air-entrained concrete building block of examples detailed above production
《GB11968-2006 autoclave aerated concrete building blocks》The standard of B05 certified products building block in standard.
Embodiment 5
(1) pretreatment of raw material：Slurry is made in carbide slag plus 82 DEG C of hot water；
(2) dispensing：The secondary tailings of copper ashes, carbide slag, cement, desulfurated plaster are conveyed into agitator tank by mass parts ratio and mixed
Close, its mass parts ratio is：56 parts of the secondary tailings of copper ashes, 24 parts of carbide slag, 15 parts of cement, 5 parts of gypsum, adjustment pulp density are allowed to
Ultimate density is in the range of 65%, and temperature control is at 60 DEG C；
(3) stir：Material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank, addition is mixture
0.12%, 2min is stirred after addition, get angry time 25min；
(4) cast-quiet stop conserving：Slip casting is entered in mould, mould is moved into fog room after being poured, at 65 DEG C
At a temperature of it is quiet stop conserving, 1.5 it is small when after it is cut when base substrate has certain degree of hardness；
(5) form removal is cut：Form removal cutting is carried out to it when base substrate has certain degree of hardness in maintenance end；
(6) steam press maintenance：Base substrate is pushed into still kettle after cutting technique and carries out steam press maintenance, autoclaved schedule is to vacuumize
0.5 it is small when until -0.4 to -0.5 atmospheric pressure, when heating 2 is small, pressure 1.2MPa, 180 DEG C of temperature, when constant temperature time 10 is small；It is cold
But 2 hours to room temperature, up to product.
With reference to national standard《Steam-pressing aero-concrete method for testing performance (GB/T11969-2008)》, the dry density of product is：
500kg/m3, compression strength 3.1Mpa, reaches according to the performance indicator of the air-entrained concrete building block of examples detailed above production
《GB11968-2006 autoclave aerated concrete building blocks》The standard of B05 certified products building block in standard.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
- A kind of 1. method of the secondary tailings production autoclave aerated concrete building block of copper ashes, it is characterised in that comprise the following steps：S1, pretreatment of raw material：Carbide slag slurries are made in carbide slag addition hot water；S2, dispensing：The secondary tailings of the copper ashes, the carbide slag slurries, cement, desulfurated plaster are conveyed into stir by weight percentage Mix and mixed material is mixed to obtain in tank；S3, stirring：The mixed material is stirring evenly and then adding into aluminium powder cream of getting angry in agitator tank and obtains slurry；S4, cast-quiet stop conserving：The slip casting is entered in mould, it is to be cast to finish that the mould is moved to fog room is quiet Stop conserving to obtain base substrate；S5, form removal cutting：The base substrate form removal is cut when the base substrate has certain degree of hardness；S6, steam press maintenance：To be carried out afterwards in the base substrate that form removal is cut through push-in still kettle steam press maintenance obtain it is steam pressurized Concrete segment.
- 2. the method as described in claim 1, it is characterised in that hot water temperature described in step S1 is 75-85 DEG C.
- 3. the method as described in claim 1, it is characterised in that the secondary tailings of copper ashes is direct by rotary hearth furnace for copper tailings The slag obtained after reduction-grinding ore deposit magnetic separation, wherein SiO2Mass percentage 55-65%.
- 4. the method as described in claim 1, it is characterised in that Ca (OH) in the carbide slag2Mass percentage be not less than 75%, the carbide slag adds hot water in high-speed pulping machine and carbide slag slurries is made.
- 5. the method as described in claim 1, it is characterised in that the cement is PO42.5 Portland cements.
- 6. the method as described in claim 1, it is characterised in that activated aluminum mass percentage is more than in the aluminium powder cream 85%, get angry 20~30min of time.
- 7. the method as described in claim 1, it is characterised in that in terms of mass parts, secondary tailings 55-60 parts of the copper ashes, electricity Described carbide slag 20-25 parts, described cement 10-15 parts, described gypsum 3-5 parts in rock ballast slurry.
- 8. the method as described in claim 1, it is characterised in that aluminium powder cream addition described in step S3 is the mixed material The 0.08-0.12% of quality, stirs 0.5-2min after addition, pulp density is calculated in mass percent in 55- in whipping process 65%, temperature control is at 60-65 DEG C.
- 9. method as described in claim 1, it is characterised in that the quiet temperature for stopping maintenance is 65-75 DEG C described in step S4, When curing time is 1-3 small.
- 10. method as described in claim 1, it is characterised in that autoclaved schedule is described in step S6：Vacuumize -0.4 Extremely -0.5 atmospheric pressure, when heating 1.5-2 is small, pressure 1.2-1.3MPa, 180-200 DEG C of temperature, when constant temperature time 8-10 is small；Afterwards Cool down 2 it is small when be cooled to room temperature.
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| CN108892425A (en) * | 2018-07-23 | 2018-11-27 | 中煤地质工程有限公司北京水工环地质勘查院 | A kind of foam concrete and preparation method thereof based on vanadium tailing |
| CN110156492A (en) * | 2019-05-31 | 2019-08-23 | 华中科技大学 | The method and product of air entrained concrete are prepared based on microwave precuring technology of getting angry |
| CN111592292A (en) * | 2020-06-05 | 2020-08-28 | 铜陵铜冠建安新型环保建材科技有限公司 | Copper slag reinforced aerated concrete block and preparation method thereof |
-
2017
- 2017-12-12 CN CN201711315241.5A patent/CN107954679A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892425A (en) * | 2018-07-23 | 2018-11-27 | 中煤地质工程有限公司北京水工环地质勘查院 | A kind of foam concrete and preparation method thereof based on vanadium tailing |
| CN110156492A (en) * | 2019-05-31 | 2019-08-23 | 华中科技大学 | The method and product of air entrained concrete are prepared based on microwave precuring technology of getting angry |
| CN111592292A (en) * | 2020-06-05 | 2020-08-28 | 铜陵铜冠建安新型环保建材科技有限公司 | Copper slag reinforced aerated concrete block and preparation method thereof |
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