CN104250083B - A kind of metallurgical slag air entrained concrete and processing technology and application - Google Patents
A kind of metallurgical slag air entrained concrete and processing technology and application Download PDFInfo
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- CN104250083B CN104250083B CN201310270315.3A CN201310270315A CN104250083B CN 104250083 B CN104250083 B CN 104250083B CN 201310270315 A CN201310270315 A CN 201310270315A CN 104250083 B CN104250083 B CN 104250083B
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- air entrained
- entrained concrete
- metallurgical slag
- siccative
- slag
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- 239000002893 slag Substances 0.000 title claims abstract description 88
- 239000004567 concrete Substances 0.000 title claims abstract description 44
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011499 joint compound Substances 0.000 claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 238000009628 steelmaking Methods 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000004411 aluminium Substances 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000000292 calcium oxide Substances 0.000 claims abstract description 16
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 16
- 239000010440 gypsum Substances 0.000 claims abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 11
- 238000005272 metallurgy Methods 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 6
- 230000000996 additive effect Effects 0.000 claims abstract description 6
- 239000004566 building material Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 claims description 15
- 239000006071 cream Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical group O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000002440 industrial waste Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 13
- 239000000463 material Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000000284 resting effect Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- -1 calcium--aluminium--Silicon Chemical compound 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to building material field, be specifically related to a kind of metallurgical slag air entrained concrete and processing technology and application. Metallurgical slag air entrained concrete of the present invention, its composition comprises siccative, additive and water; The composition of described siccative comprises by weight percentage: cement 5～12wt%, and steel-making slag powder 2～4wt%, slag powders 3～5wt%, metallurgy is ion dust mud contaning 15～25wt% not, flyash 36～50wt%, quick lime 15～20wt%, gypsum: 3～5wt%; Additive comprises water reducer and aluminium powder, and the content of water reducer is 0.5～2.0wt% of siccative weight, and the content of aluminium powder is 0.04～0.2wt% of siccative weight; The mass ratio of water and siccative is 0.45～0.6:1. Metallurgical slag air entrained concrete of the present invention has the effects such as profit useless environmental protection, heat preservation and soundproof and fire prevention, belongs to the recycling of industrial waste, reduces environmental pollution, meets the requirement of sustainable development.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of metallurgical slag air entrained concrete and processing technology and application.
Background technology
The present invention relates to a kind of method of metallurgical slag air entrained concrete and preparation thereof, is not contain with steel-making slag powder, slag powders, metallurgyThe trade wastes such as iron dirt mud and flyash are primary raw material, belong to the recycling of Industrial Solid refuse, applicable to insulation, everyThe light building material such as sound and fire proofing material field.
Air entrained concrete is taking calcareous material and siliceous material as solvent, forms loose structure with the method for chemical gas generation,Obtain the artificial stone material of lightweight of intensity by steam press maintenance. It has high-strength light, heat-insulation and heat-preservation, fire prevention, sound insulation, water resistantThe characteristics such as damping, are novel energy-saving environment-friendly type construction materials, in the engineerings such as high building wall system work, insulation and linerArrive application widely.
Along with the development of building trade, construction material resource and the energy in short supply, trade waste is as a kind of idle resource,More and more be used in building material field, played the work of saving energy and reduce the cost, reducing costs and alleviate carrying capacity of environmentWith.
Metallurgical slag comprises not ion dust mud contaning of slag, slag, metallurgy herein.
Slag is the waste residue of steel industry. Its mineral composition comprises olivine, dicalcium silicate, tricalcium silicate and free on a small quantityThe compositions such as calcium oxide, magnesia, vitreum. There is certain aquation from hard ability, after superfine powder activation processing, canTo solve preferably free calcium oxide, magnesian expansion issues, there is certain activity.
Metallurgy not ion dust mud contaning is nonferrous ash, slag, mud in steel mill, in broad terms, is also the one of steel slag resource. SmeltingGold not ion dust mud contaning is of a great variety, has contained metallurgical production whole process. Its state mostly is subparticle, in concrete productPlay fine effect of gathering materials.
Slag is also referred to as granulated blast-furnace slag, water-granulated slag or grain slag, is that smelter floats on molten iron while smelting iron in iron-smelting furnaceThe slag on surface, when discharge, water quenching obtains. Granulated blast-furnace slag contains CaO, SiO simultaneously2、A12O3, be calcium--aluminium--Silicon ternary system, it is called ground slag after levigate. There is higher lateral reactivity. Under alkaline environment, can occurHydration and hardening and produce intensity. Self also can there is hydration and hardening reaction in ground slag, have from hard under certain fineness conditionProperty.
Flyash is the flue dust of coal-fired power plant's discharge, obtains through gathering dust. Flyash through pyroprocess and gather dust fastSpeed cooling procedure. its product with glass state material for leading and containing a small amount of crystalline state material. The chemical composition of flyash is with SiO2、A12O3Be main, the content sum of the two is generally between 60%-85%, and its thing phase morphology is taking vitreum as main, thereby has latentIn activity. Flyash belongs to light material compared with cement and other solid waste things, can reduce the unit mass of material.
Steel-making slag powder, slag powders, flyash and metallurgy not ion dust mud contaning all belong to industrial solid castoff, are a kind of idle moneySource, if do not loop recycling, not only causes the significant wastage of resource, takies a large amount of lifes but also pollute the environmentProduce place.
Summary of the invention
The object of the invention is to solve the problem that in prior art, industrial solid castoff pollutes, a kind of metallurgical slag aerating is providedConcrete and preparation technology thereof. Metallurgical slag air entrained concrete of the present invention has the works such as profit useless environmental protection, heat preservation and soundproof and fire preventionWith, and belong to the recycling of Industrial Solid refuse, and turn waste into wealth, reduce environmental pollution.
First the present invention discloses a kind of metallurgical slag air entrained concrete, and its composition comprises siccative, additive and water; Described siccativeComposition, comprise by weight percentage: cement 5～12wt%, steel-making slag powder 2～4wt%, slag powders 3～5wt%, metallurgyNot ion dust mud contaning 15～25wt%, flyash 36～50wt%, quick lime 15～20wt%, gypsum 3～5wt%; Outside describedAdd agent and comprise water reducer and aluminium powder cream, wherein the content of water reducer is 0.5～2.0wt% of siccative weight, and the content of aluminium powder cream is0.04～0.2wt% of siccative weight; The mass ratio of water and siccative is 0.45～0.6:1.
Preferably, metallurgical slag air entrained concrete of the present invention, its dry apparent density is 500kg/m3～800kg/m3。
Siccative:
Cement of the present invention is the conventional cement in this area, preferred, is 42.5 grades of Portland cements.
Steel-making slag powder of the present invention is by levigate the making of converter slag process; Preferably, the specific area of described steel-making slag powder >=400m2/ kg. Preferred, the contained free calcium oxide≤3wt% of steel-making slag powder. Steel-making slag powder is real by upper Hypon smelting slag comprehensive exploitationIndustry Co., Ltd provides.
Institute of the present invention slag powders is made up through grinding of granulation blast furnace granulated slag; Preferably, the specific area of described slag powders >= 400m2/ kg. Slag powders is by Shanghai Baotian New Type Building Material Co., Ltd.
Metallurgy of the present invention not ion dust mud contaning is lime stone mud and/or dolomite mud. Described lime stone mud is raw for manufacturingThe limestone crushing dedusting damping mud producing in lime process; Described dolomite mud is produced by manufacturing in quick lime processDolomite clean sludge. By Shanghai Baosteel, Co., Ltd provides.
Additive:
Preferably, described water reducer is naphthalene water reducer. More excellent, described water reducer model is FDN-2 type. By five smelting collectionThe Shang Haiyuan of group builds building material Co., Ltd to be provided.
Aluminium powder cream of the present invention meets national standard " aluminium powder of getting angry " (GB/T2084) and " air entrained concrete aluminiumPowder cream " (JC/T407) requirement.
Second aspect present invention discloses the processing technology of aforementioned metallurgical slag air entrained concrete, comprises the steps:
1) according to the composition of described metallurgical slag air entrained concrete by not ion dust mud contaning, powder of cement, steel-making slag powder, slag powders, metallurgyCoal ash, quick lime, gypsum uniform stirring, obtain siccative mixture;
2) in the siccative mixture obtaining to previous step, add water reducer, water and aluminium powder cream, uniform stirring 5～30 minutes,Obtain slurry;
3) slurry of preparation is imported to injection molding in hopper, through steam precuring, steam press maintenance, obtains metallurgical slag air entrained concrete.Preferably, the method for precuring is described in step 3): 40 DEG C～45 DEG C of temperature, and in the chamber precuring 2～4h that rests.
Further, after steam precuring, the part that acquisition intensity reaches 0.2-0.3MPa carries out moulding cutting.
Preferably, described in step 3), the method for steam press maintenance is: pressure 0.8～1.3MPa, steam press maintenance 8-9 in pressing steaming stillHour.
The present invention finally discloses the application of aforementioned metallurgical slag air entrained concrete in building material field.
The each performance indications of air entrained concrete that the present invention utilizes compound metallurgical ground-slag to prepare meet standard GB/T 11968-2006The requirement of " autoclave aerated concrete building block ".
The invention has the advantages that and utilize industrial solid castoff for raw material, by steel-making slag powder, slag powders, flyash and metallurgy notIon dust mud contaning carries out compound, and the potential volcanic ash effect that makes full use of steel-making slag powder, slag powders and flyash replaces part of cement,Not only reduce production cost, but also can reduce the heat of hydration of cement, improved the later strength of concrete product. UtilizeMetallurgical not ion dust mud contaning fine gathered materials effect as the filler of air-entrained concrete building block, the aerating of preparing after steam press maintenanceConcrete strength is high, corrosion resistance is strong, has the effects such as insulation, sound insulation, fire prevention simultaneously, belongs to the profit again of Industrial Solid refuseWith, turn waste into wealth, not only save energy resources day by day in short supply, and protected again our living environment, at one stroke many.
Brief description of the drawings
Fig. 1: air entrained concrete preparation technology line map of the present invention
Detailed description of the invention
Before further describing the specific embodiment of the invention, should be understood that protection scope of the present invention is not limited to following spyFixed specific embodiments; It is also understood that the term using in the embodiment of the present invention is in order to describe specific concrete enforcementScheme, instead of in order to limit the scope of the invention.
Embodiment 1
The concrete formula of the present invention is by weight: the slag powders of the cement of 10wt%, the steel-making slag powder of 3wt%, 4wt%, 20wt%'sThe flyash of metallurgical not ion dust mud contaning, 41wt%, the quick lime of 18wt%, the gypsum uniform stirring of 4wt%;
Then add the water reducer of siccative weight 0.8wt%, the aluminium powder cream of 0.16wt% and the water of 50wt%, uniform stirring;
The slurry of mixing is imported to injection molding in hopper, push 45 DEG C of chamber precuring of resting and within 3 hours, treat that part intensity reaches 0.25MPaShi Jinhang moulding cutting, then enters to press to steam in still and carries out steam press maintenance 9 hours, goes out afterwards still and piles up. Then survey apparent dryDensity is 604kg/m3, intensity is 4.0MPa.
Embodiment 2
The concrete formula of the present invention is by weight: the slag powders of the cement of 10wt%, the steel-making slag powder of 3wt%, 4wt%, 20wt%'sThe flyash of metallurgical not ion dust mud contaning, 41wt%, the quick lime of 18wt%, the gypsum uniform stirring of 4wt%;
Then add the water reducer of siccative weight 0.8wt%, the aluminium powder cream of 0.20wt% and the water of 50wt%, uniform stirring;
The slurry of mixing is imported to injection molding in hopper, push 45 DEG C of chamber precuring of resting and within 3 hours, treat that part intensity reaches 0.25MPaShi Jinhang moulding cutting, then enters to press to steam in still and carries out steam press maintenance 9 hours, goes out afterwards still and piles up. Then survey apparent dryDensity is 511kg/m3, intensity is 3.1MPa.
Embodiment 3
The concrete formula of the present invention is by weight: the slag powders of the cement of 10wt%, the steel-making slag powder of 3wt%, 4wt%, 20wt%'sThe flyash of metallurgical not ion dust mud contaning, 41wt%, the quick lime of 18wt%, the gypsum uniform stirring of 4wt%;
Then add the water reducer of siccative weight 0.8wt%, the aluminium powder cream of 0.04wt% and the water of 50wt%, uniform stirring;
The slurry of mixing is imported to injection molding in hopper, push 45 DEG C of chamber precuring of resting and within 3 hours, treat that part intensity reaches 0.25MPaShi Jinhang moulding cutting, then enters to press to steam in still and carries out steam press maintenance 9 hours, goes out afterwards still and piles up. Then survey apparent dryDensity is 818kg/m3, intensity is 7.8MPa.
Embodiment 4
The concrete formula of the present invention is by weight: the slag powders of the cement of 5wt%, the steel-making slag powder of 4wt%, 5wt%, the smelting of 25wt%The flyash of golden not ion dust mud contaning, 36wt%, the quick lime of 20wt%, the gypsum uniform stirring of 5wt%;
Then add the water reducer of siccative weight 0.5wt%, the aluminium powder cream of 0.16wt% and the water of 60wt%, uniform stirring;
The slurry of mixing is imported to injection molding in hopper, push 40 DEG C of chamber precuring of resting and within 4 hours, treat that part intensity reaches 0.25MPaShi Jinhang moulding cutting, then enters to press to steam in still and carries out steam press maintenance 9 hours, goes out afterwards still and piles up. Then survey apparent dryDensity is 612kg/m3, intensity is 3.6MPa.
Embodiment 5
The concrete formula of the present invention is by weight: the slag powders of the cement of 12wt%, the steel-making slag powder of 2wt%, 3wt%, 15wt%'sThe flyash of metallurgical not ion dust mud contaning, 50wt%, the quick lime of 15wt%, the gypsum uniform stirring of 3wt%;
Then add the water reducer of siccative weight 2.0wt%, the aluminium powder cream of 0.16wt% and the water of 45wt%, uniform stirring;
The slurry of mixing is imported to injection molding in hopper, push 45 DEG C of chamber precuring of resting and within 2 hours, treat that part intensity reaches 0.25MPaShi Jinhang moulding cutting, then enters to press to steam in still and carries out steam press maintenance 8 hours, goes out afterwards still and piles up. Then survey apparent dryDensity is 609kg/m3, intensity is 4.3MPa.
Claims (10)
1. a metallurgical slag air entrained concrete, its composition comprises siccative, additive and water; The composition of described siccative by weight percentageMeter comprises: cement 5～12wt%, and steel-making slag powder 2～4wt%, slag powders 3～5wt%, metallurgy is ion dust mud contaning 15～25wt% not,Flyash 36～50wt%, quick lime 15～20wt%, gypsum 3～5wt%; Described additive comprises water reducer and aluminium powderCream, wherein the content of water reducer is 0.5～2.0wt% of siccative weight, the content of aluminium powder cream be 0.04 of siccative weight～0.2wt%; The mass ratio of water and siccative is 0.45～0.6:1; The processing technology of described metallurgical slag air entrained concrete, bagDraw together following steps:
1) according to the composition of described metallurgical slag air entrained concrete by not ion dust mud contaning, powder of cement, steel-making slag powder, slag powders, metallurgyCoal ash, quick lime, gypsum uniform stirring, obtain siccative mixture;
2) in the siccative mixture obtaining to previous step, add water reducer, water and aluminium powder cream, uniform stirring 5～30 minutes,Obtain slurry;
3) slurry of preparation is imported to injection molding in hopper, through steam precuring, steam press maintenance, obtains metallurgical slag air entrained concrete;Step 3) method of described precuring is: 40 DEG C～45 DEG C of temperature, in the chamber precuring 2～4h that rests; Step 3) instituteThe method of stating steam press maintenance is: pressure 0.8～1.3MPa, steams steam press maintenance 8-9 hour in still in pressing.
2. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, described cement is 42.5 grades of normal silicatesCement.
3. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, the specific area of described steel-making slag powder >=400m2/kg。
4. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, the specific area of described slag powders >=400m2/kg。
5. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, described metallurgy not ion dust mud contaning is lime stone dirtMud and/or dolomite mud.
6. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, described water reducer is naphthalene water reducer.
7. metallurgical slag air entrained concrete as claimed in claim 6, is characterized in that, described water reducer model is FDN-2 type.
8. metallurgical slag air entrained concrete as claimed in claim 1, is characterized in that, described metallurgical slag air entrained concrete dry apparentDensity is 500kg/m3～800kg/m3。
9. the processing technology of metallurgical slag air entrained concrete described in the arbitrary claim of claim 1-8, comprises the steps:
1) according to the composition of described metallurgical slag air entrained concrete by not ion dust mud contaning, powder of cement, steel-making slag powder, slag powders, metallurgyCoal ash, quick lime, gypsum uniform stirring, obtain siccative mixture;
2) in the siccative mixture obtaining to previous step, add water reducer, water and aluminium powder cream, uniform stirring 5～30 minutes,Obtain slurry;
3) slurry of preparation is imported to injection molding in hopper, through steam precuring, steam press maintenance, obtains metallurgical slag air entrained concrete;Step 3) method of described precuring is: 40 DEG C～45 DEG C of temperature, in the chamber precuring 2～4h that rests; Step 3) instituteThe method of stating steam press maintenance is: pressure 0.8～1.3MPa, steams steam press maintenance 8-9 hour in still in pressing.
Described in the arbitrary claim of claim 1-8 metallurgical slag air entrained concrete in the application of building material field.
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| CN110342896A (en) * | 2019-07-29 | 2019-10-18 | 江苏禾吉新材料科技有限公司 | A kind of concrete aerated brick of steel slag coal ash and preparation method thereof |
| CN110540397B (en) * | 2019-08-27 | 2021-10-29 | 江苏博拓新型建筑材料有限公司 | Anti-cracking energy-saving heat-insulating aerated concrete block and preparation method thereof |
| CN110734300A (en) * | 2019-10-09 | 2020-01-31 | 湖南工程学院 | aerated concrete blocks and preparation process thereof |
| CN112679173A (en) * | 2020-12-10 | 2021-04-20 | 广东广业检测有限公司 | Stainless steel slag carbonized aerated brick and preparation method thereof |
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| CN101439947A (en) * | 2007-11-22 | 2009-05-27 | 黄志鹏 | Aerated concrete building block and manufacturing method thereof |
| RU2362755C1 (en) * | 2008-03-13 | 2009-07-27 | Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Mix for light concrete preparation |
| CN102757211A (en) * | 2012-07-20 | 2012-10-31 | 泰州振昌工业废渣综合利用有限责任公司 | Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block |
| CN103011877A (en) * | 2012-12-11 | 2013-04-03 | 上海宝冶钢渣综合开发实业有限公司 | Waste-utilizing foam concrete and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7658797B2 (en) * | 2005-03-22 | 2010-02-09 | Nova Chemicals Inc. | Lightweight concrete compositions |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439947A (en) * | 2007-11-22 | 2009-05-27 | 黄志鹏 | Aerated concrete building block and manufacturing method thereof |
| RU2362755C1 (en) * | 2008-03-13 | 2009-07-27 | Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Mix for light concrete preparation |
| CN102757211A (en) * | 2012-07-20 | 2012-10-31 | 泰州振昌工业废渣综合利用有限责任公司 | Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block |
| CN103011877A (en) * | 2012-12-11 | 2013-04-03 | 上海宝冶钢渣综合开发实业有限公司 | Waste-utilizing foam concrete and preparation process thereof |
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