CN107188483A - A kind of basalt ore tailing autoclave aerated concrete building block and preparation method thereof - Google Patents
A kind of basalt ore tailing autoclave aerated concrete building block and preparation method thereof Download PDFInfo
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- CN107188483A CN107188483A CN201710607614.XA CN201710607614A CN107188483A CN 107188483 A CN107188483 A CN 107188483A CN 201710607614 A CN201710607614 A CN 201710607614A CN 107188483 A CN107188483 A CN 107188483A
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of basalt ore tailing autoclave aerated concrete building block, the proportioning of feed components is：297~391kg of basalt ore tailing, 33~69kg of quartz sand, 80~110kg of quick lime, 60~80kg of cement, 20~30kg of desulfurated plaster, aluminium powder cream 0.37kg~0.56kg, 0.1~0.3kg of additive, 250~340kg of water；The present invention is used as solid waste using basalt ore tailing, compared to traditional siliceous material sand and flyash, its is cheap, itself there is good fineness, ball milling energy consumption is low, production cost can effectively be reduced, increase enterprise productivity effect, the autoclave aerated concrete building block prepared than traditional material has lower energy consumption and Geng Gao economic benefit.
Description
Technical field
The invention belongs to building materials energy-saving wall field of material technology, a kind of basalt ore tailing is related generally to steam pressurized
Concrete segment and preparation method thereof.
Technical background
Steam-pressing aero-concrete is a kind of New Energy Saving Wall Materials widely used in building trade, its main former material
Material includes siliceous material and calcareous material, and wherein siliceous material accounts for the 65-70% of the total material of raw material.Generally make in current industry
Siliceous material is flyash and sand, however as the need of building material industry especially cement and premixing mortar industry to flyash
The amount of asking constantly increases, and flyash all occurs in that the situation that supply falls short of demand in many cities, and flyash price also rises steadily,
Beyond the controlled range of air entrained concrete cost of raw；Another siliceous material quartz sand belongs to natural resources, one
Aspect is limited by regional condition, and on the other hand unconfined exploitation river sand or mountain sand can all be caused brokenly to natural environment
It is bad, do not meet China's Green Sustainable strategy.
When basalt mining and ore processing screening, the product typically to be obtained is with the broken of certain size requirement
Stone and Machine-made Sand, are mainly used in road construction and ready-mixed concrete production.But can not be kept away in ore reduction and screening process
That exempts from will produce a large amount of tailings for not meeting rubble and the requirement of Machine-made Sand product specification, typically fine particulate and dust-like,
According to statistics, one medium-sized mining processing factory, is removed outside the gravel particle normally produced and Machine-made Sand, and daily tailing is produced
Amount reaches 500 tons or so, not only needs to take a large amount of soils stackings, and if can not deal carefully with, can also be to natural environment
Serious dust pollution is caused, while being also unfavorable for the rational exploitation and utilization of ore resource.
The content of the invention
It is an object of the invention to provide a kind of basalt ore tailing autoclave aerated concrete building block.
It is a further object of the present invention to provide a kind of preparation method of basalt ore tailing autoclave aerated concrete building block,
To solve the problem of accumulation of basalt mine tailing high-volume is taken up an area with severe contamination environment in the prior art.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of basalt ore tailing steam pressure adds
Gas concrete segment, the proportioning of feed components is：297~391kg of basalt ore tailing, 33~69kg of quartz sand, raw stone
80~110kg of ash, 60~80kg of cement, 20~30kg of desulfurated plaster, aluminium powder cream 0.37kg~0.56kg, additive 0.1~
0.3kg, 250~340kg of water.
The preparation method of above-mentioned basalt ore tailing autoclave aerated concrete building block, it comprises the following steps：
Step 1, by basalt ore tailing by ball mill carry out dry grinding it is levigate；
Step 2, basalt tailing of the step 1 after levigate and water be prepared by mixing into slurry；
Step 3, step 2 prepare basalt tailing slurry in add mass percent 10~15% quartz sand pass through
Ball mill carries out wet mixing mill, is prepared into the siliceous slurry of mixing；
In step 4, the siliceous slurry of mixing for preparing cement, quick lime, desulfurated plaster, additive and water addition step 3
2~3min is mixed, aluminium powder cream is eventually adding and stirs 45~50s, uniform mixed slurry is made；
Step 5, pour into a mould, expansion of getting angry, initial set：Mixed slurry made from step 4 is poured into mould, between feeding precuring,
40~50 DEG C of maintenances of room temperature, completion, which is got angry, to be expanded and pre-hardening process, and pre-hardening base substrate is made in static 2~3h of maintenance；
Step 6, cutting：It will be cut after base substrate form removal after step 5 initial set by cutting machine；
Step 7, autoclave curing：Base substrate after step 6 is cut carries out autoclave curing, and conservation system is 0~-
0.05MP vacuumizes 0.5h, the dip time 1.5h of -0.05~1.2MP boostings 2h, 1.2MP constant pressures 7~8h, 1.2MP~0, is made
Autoclave aerated concrete building block.
Further, the basalt tailing SiO for dry grinding levigate in the step 12Content 53~55%, Al2O3Content 14~
20%, particle diameter is less than 0.2mm, and wherein ratio of the particle diameter less than 0.08mm accounts for 80~85%.
Further, the quartz sand SiO added in the step 32Content is more than quartz sand particle size after 95%, mix grinding and is less than
Siliceous slurry moisture content after 0.2mm, mix grinding is 42~44%.
The structure and performance formation mechenism of the present invention：
1st, the formation of air hole structure：In raw material mixing process, lime and a large amount of Ca (OH) of water reaction generation2, make
Obtain mixed slurry and alkalescence is presented, chemical reaction releasing hydrogen can occur under alkaline environment with water for aluminium powder cream, so that in slurry
Many hollow structures are internally formed, reaction equation is as follows：
CaO+H2O→Ca(OH)2+ heat
2Al+6H2O→2Al(OH)3+3H2↑
2nd, the formation of product strength：The quiet preliminary hydration reaction of stage generation that stops forms pre-hardening base substrate, autoclave at high temperature maintenance rank
Violent hydration reaction formation final strength occurs for section siliceous material and calcareous material.
Siliceous material in the present invention is basalt tailing and quartz sand, wherein SiO in basalt tailing2Content be 53~
55%, Al2O3SiO in content 14~20%, quartz sand2Content is more than 95%, and the quartz sand after ball milling has the work of three aspects
With one is to be present in as aggregate is dispersed in product, improves product strength；Two be SiO in increase hydration reaction2Dissolving
Amount, accelerates the reaction speed of preset period, between shortening the quiet stopping time；Three be SiO in supplement tailing2Deficiency, increase high intensity silicon
The generation of sour calcium product.
Beneficial effects of the present invention are：
1st, it can prepare and meet national standard autoclave aerated concrete building block (GB11968-2006) ACB A3.5 B05
High-class product, ACB A3.5 B06 certified products, ACB A5.0 B07 certified products, can be applied to building energy conservation materials for wall.
2nd, by the use of basalt ore tailing as main siliceous material, the comprehensive utilization of resources of solid waste is realized, it is to avoid
The dust pollution of natural environment, efficiently solves the waste accumulation problem during ore extraction；And be conducive to environmental protection,
Be conducive to the raising of the performance of enterprises, there is significant economic and social benefit.
3rd, basalt ore tailing is as solid waste, compared to more traditional siliceous material sand and flyash, and its price is very cheap,
And its own has good fineness, ball milling energy consumption is low, can effectively reduce air entrained concrete production cost, the production of increase enterprise
Benefit.
4th, the autoclave aerated concrete building block prepared is as self-insulation wall material, the steam pressure prepared than other traditional materials
Air-entrained concrete building block has the economic benefit of lower energy consumption and Geng Gao.
Embodiment
The present invention is described in further detail with reference to embodiment.
Embodiment one
A kind of basalt ore tailing autoclave aerated concrete building block, the proportioning of feed components is：Basalt tailing
297kg, quartz sand 33kg, quick lime 80kg, cement 60kg, desulfurated plaster 20kg, aluminium powder cream 0.56kg, additive 0.3kg, water
250kg。
The preparation method of above-mentioned basalt ore tailing autoclave aerated concrete building block, this method comprises the following steps：
Step 1：Basalt ore tailing is levigate by ball mill progress dry grinding；The basalt tailing SiO that dry grinding is levigate2
Content 53%, Al2O3Content 14%, maximum particle diameter is less than 0.2mm, and wherein ratio of the particle diameter less than 0.08mm accounts for 80%；
Step 2：Basalt tailing of the step 1 after levigate and water are prepared by mixing into slurry；
Step 3：The quartz sand that mass percent 10% is added in basalt tailing slurry after step 2 slurrying passes through ball
Grinding machine carries out wet mixing mill, is prepared into the siliceous slurry of mixing；The quartz sand SiO of addition2Content is more than quartzy sand grains after 95%, mix grinding
It is 43.1% that footpath, which is less than the siliceous slurry moisture content (weight of water accounts for the ratio of slurry gross weight) after 0.2mm, mix grinding,；
Step 4：After the siliceous slurry of mixing, cement, quick lime, desulfurated plaster, additive and water mixing prepared by step 3
2min is stirred, aluminium powder cream stirring 45s is eventually adding, uniform mixed slurry is made；
Step 5, pour into a mould, expansion of getting angry, initial set：Mixed slurry made from step 4 is poured into mould, between feeding precuring,
40 DEG C of maintenances of room temperature, completion, which is got angry, to be expanded and pre-hardening process, and pre-hardening base substrate is made in static maintenance 2h；
Step 6, cutting：It will be cut after base substrate form removal after step 5 initial set by cutting machine；
Step 7, autoclave curing：Base substrate after step 6 is cut carries out autoclave curing, and conservation system is 0~-
0.05MP vacuumizes 0.5h, the dip time 1.5h of -0.05~1.2MP boostings 2h, 1.2MP constant pressures 7h, 1.2MP~0, and steam pressure is made
Air-entrained concrete building block.
It is used in step 4：
Quick lime：The content of free calcium oxide 75%, digests 80 DEG C of temperature, and digestion time 5min belongs to quick lime；
Cement：42.5 Portland cements；
Desulfurated plaster：Power plant desulfurization byproduct；
Aluminium powder cream：Amount of solid content 68%, Effective Aluminum Content 88%；
Water：Underground water；
Autoclave aerated concrete building block prepared by the above method carries out performance test, as a result as follows：
From result above, obtained autoclave aerated concrete building block property indices meet national standard
GB11968-2006 autoclave aerated concrete building block ACB A3.5 B05 high-class product indexs, it is adaptable to building energy conservation materials for wall.
Embodiment two
A kind of basalt ore tailing autoclave aerated concrete building block, the proportioning of feed components is：Basalt tailing
348kg, quartz sand 52kg, quick lime 95kg, cement 70kg, desulfurated plaster 25kg, aluminium powder cream 0.46kg, additive 0.2kg, water
300kg。
The preparation method of above-mentioned basalt ore tailing autoclave aerated concrete building block, this method comprises the following steps：
Step 1：Basalt ore tailing is levigate by ball mill progress dry grinding；The basalt tailing SiO that dry grinding is levigate2
Content 54%, Al2O3Content 18%, maximum particle diameter is less than 0.2mm, and wherein ratio of the particle diameter less than 0.08mm accounts for 83%；
Step 2：Basalt tailing of the step 1 after levigate and water are prepared by mixing into slurry；
Step 3：The quartz sand that mass percent 13% is added in basalt tailing slurry after step 2 slurrying passes through ball
Grinding machine carries out wet mixing mill, is prepared into the siliceous slurry of mixing；The quartz sand SiO of addition2Content is more than quartzy sand grains after 95%, mix grinding
It is 42.9% that footpath, which is less than the siliceous slurry moisture content (weight of water accounts for the ratio of slurry gross weight) after 0.2mm, mix grinding,；
Step 4：After the siliceous slurry of mixing, cement, quick lime, desulfurated plaster, additive and water mixing prepared by step 3
2min is stirred, aluminium powder cream stirring 45s is eventually adding, uniform mixed slurry is made；
Step 5, pour into a mould, expansion of getting angry, initial set：Mixed slurry made from step 4 is poured into mould, between feeding precuring,
45 DEG C of maintenances of room temperature, completion, which is got angry, to be expanded and pre-hardening process, and pre-hardening base substrate is made in static maintenance 2.5h；
Step 6, cutting：It will be cut after base substrate form removal after step 5 initial set by cutting machine；
Step 7, autoclave curing：Base substrate after step 6 is cut carries out autoclave curing, and conservation system is 0~-
0.05MP vacuumizes 0.5h, the dip time 1.5h of -0.05~1.2MP boostings 2h, 1.2MP constant pressures 7.5h, 1.2MP~0, is made and steams
Pressing aero-concrete building block.
It is used in step 4：
Quick lime：The content of free calcium oxide 75%, digests 80 DEG C of temperature, and digestion time 5min belongs to quick lime；
Cement：42.5 Portland cements；
Desulfurated plaster：Power plant desulfurization byproduct；
Aluminium powder cream：Amount of solid content 68%, Effective Aluminum Content 85%；
Water：Underground water；
Autoclave aerated concrete building block prepared by the above method carries out performance test, as a result as follows：
From result above, obtained autoclave aerated concrete building block property indices meet national standard
GB11968-2006 autoclave aerated concrete building block ACB A3.5 B06 certified products indexs, available for building energy conservation materials for wall.
Embodiment three
A kind of basalt ore tailing autoclave aerated concrete building block, the proportioning of feed components is：Basalt tailing
391kg, quartz sand 69kg, quick lime 110kg, cement 80kg, desulfurated plaster 30kg, aluminium powder cream 0.37kg, additive 0.1kg,
Water 340kg.
The preparation method of above-mentioned basalt ore tailing autoclave aerated concrete building block, this method comprises the following steps：
Step 1：Basalt ore tailing is levigate by ball mill progress dry grinding；The basalt tailing SiO that dry grinding is levigate2
Content 55%, Al2O3Content 20%, maximum particle diameter is less than 0.2mm, and wherein ratio of the particle diameter less than 0.08mm accounts for 85%；
Step 2：By basalt tailing of the step 1 after levigate with being prepared by mixing into slurry；
Step 3：The quartz sand that mass percent 15% is added in basalt tailing slurry after step 2 slurrying passes through ball
Grinding machine carries out wet mixing mill, is prepared into the siliceous slurry of mixing；The quartz sand SiO of addition2Content is more than quartzy sand grains after 95%, mix grinding
It is 44% that footpath, which is less than the siliceous slurry moisture content (weight of water accounts for the ratio of slurry gross weight) after 0.2mm, mix grinding,；
Step 4：After the siliceous slurry of mixing, cement, quick lime, desulfurated plaster, additive and water mixing prepared by step 3
3min is stirred, aluminium powder cream stirring 50s is eventually adding, uniform mixed slurry is made；
Step 5, pour into a mould, expansion of getting angry, initial set：Mixed slurry made from step 4 is poured into mould, between feeding precuring,
50 DEG C of maintenances of room temperature, completion, which is got angry, to be expanded and pre-hardening process, and pre-hardening base substrate is made in static maintenance 3h；
Step 6, cutting：It will be cut after base substrate form removal after step 5 initial set by cutting machine；
Step 7, autoclave curing：Base substrate after step 6 is cut carries out autoclave curing, and conservation system is 0~-
0.05MP vacuumizes 0.5h, the dip time 1.5h of -0.05~1.2MP boostings 2h, 1.2MP constant pressures 8h, 1.2MP~0, and steam pressure is made
Air-entrained concrete building block.
It is used in step 4：
Quick lime：The content of free calcium oxide 75%, digests 80 DEG C of temperature, and digestion time 5min belongs to quick lime；
Cement：42.5 Portland cements；
Desulfurated plaster：Power plant desulfurization byproduct；
Aluminium powder cream：Amount of solid content 68%, Effective Aluminum Content 88%；
Water：Underground water；
Autoclave aerated concrete building block prepared by the above method carries out performance test, as a result as follows：
From result above, obtained autoclave aerated concrete building block property indices meet national standard
GB11968-2006 autoclave aerated concrete building block ACB A5.0 B07 certified products indexs, available for building energy conservation materials for wall.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under the enlightenment of the present invention
The product of form, however, make any change in its shape or structure, it is every that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (4)
1. a kind of basalt ore tailing autoclave aerated concrete building block, it is characterised in that：The proportioning of feed components is：The Black Warrior
297~391kg of rock and ore tailing, 33~69kg of quartz sand, 80~110kg of quick lime, 60~80kg of cement, desulfurated plaster 20~
30kg, aluminium powder cream 0.37kg~0.56kg, 0.1~0.3kg of additive, 250~340kg of water.
2. a kind of preparation method of basalt ore tailing autoclave aerated concrete building block according to claim 1, it is special
Levy and be, comprise the following steps：
Step 1, by basalt ore tailing by ball mill carry out dry grinding it is levigate；
Step 2, basalt tailing of the step 1 after levigate and water be prepared by mixing into slurry；
Step 3, step 2 prepare basalt tailing slurry in add mass percent 10~15% quartz sand pass through ball milling
Machine carries out wet mixing mill, is prepared into the siliceous slurry of mixing；
Mixed in step 4, the siliceous slurry of mixing for preparing cement, quick lime, desulfurated plaster, additive and water addition step 3
2~3min is stirred, aluminium powder cream is eventually adding and stirs 45~50s, uniform mixed slurry is made；
Step 5, pour into a mould, expansion of getting angry, initial set：Mixed slurry made from step 4 is poured into mould, between feeding precuring, in room temperature
40~50 DEG C of maintenances, completion, which is got angry, to be expanded and pre-hardening process, and pre-hardening base substrate is made in static 2~3h of maintenance；
Step 6, cutting：It will be cut after base substrate form removal after step 5 initial set by cutting machine；
Step 7, autoclave curing：Base substrate after step 6 is cut carries out autoclave curing, and conservation system is 0~-
0.05MP vacuumizes 0.5h, the dip time 1.5h of -0.05~1.2MP boostings 2h, 1.2MP constant pressures 7~8h, 1.2MP~0, is made
Autoclave aerated concrete building block.
3. a kind of preparation method of basalt ore tailing autoclave aerated concrete building block according to claim 2, it is special
Levy and be：The basalt tailing SiO for dry grinding levigate in the step 12Content 53~55%, Al2O3Content 14~20%, particle diameter
Less than 0.2mm, wherein ratio of the particle diameter less than 0.08mm accounts for 80~85%.
4. a kind of preparation method of basalt ore tailing autoclave aerated concrete building block according to claim 2, it is special
Levy and be：The quartz sand SiO added in the step 32Content is more than quartz sand particle size after 95%, mix grinding and is less than 0.2mm, mix grinding
Siliceous slurry moisture content afterwards is 42~44%.
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| CN108358526B (en) * | 2018-04-26 | 2021-04-02 | 贵州美可斯建筑工程技术有限公司 | Autoclaved aerated concrete block and preparation method thereof |
| CN108516783A (en) * | 2018-05-22 | 2018-09-11 | 深圳港创建材股份有限公司 | A kind of assorted fibre aerating materials for wall and preparation method thereof |
| CN111825381A (en) * | 2020-07-21 | 2020-10-27 | 湖南大学 | Non-sintered basalt tailing brick and preparation method thereof |
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Application publication date: 20170922 |