CN106365674A - Method for preparing aerated concrete block by using slag, tail mud, and desulfurization ashes - Google Patents
Method for preparing aerated concrete block by using slag, tail mud, and desulfurization ashes Download PDFInfo
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- CN106365674A CN106365674A CN201610814055.5A CN201610814055A CN106365674A CN 106365674 A CN106365674 A CN 106365674A CN 201610814055 A CN201610814055 A CN 201610814055A CN 106365674 A CN106365674 A CN 106365674A
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C04B18/0418—Wet materials, e.g. slurries
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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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
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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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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
- 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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- 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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- Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a preparing method of aerated concrete block using slug, tail mud, and desulfurization ashes, and belongs to the technical field of solid waste comprehensive utilization. The method adopts slag magnetic separation tail mud, desulfurization ashes, cement, lime, sand, aluminite powder and foam stabilizer as the raw materials, and through the procedures of stirring and pulp making, molding, delaying curing and autoclaved curing, the aerated concrete block is obtained. According to the preparing method of aerated concrete block using slug, tail mud, and desulfurization ashes, slug and tail mud replace partial lime and cement, desulfurization ashes replace partial lime, gypsum and sand to produce the aerated concrete block. With the total admixture of the slug, tail mud, and desulfurization ashes reaching 65% (mass ratio), problem about the utilizationof slug, tail mud, and desulfurization ashes is solved, and at the same time cost in raw materials is sharply lowered. The obtained aerated concrete block has low density, low heat conductivity coefficient, good sound insulation and compressive strength properties, and the property of the product meets the A3.5B06 requirement in GB11968-2006 of autoclaved aerated concrete blocks.
Description
Technical field
The invention belongs to solid waste technical field of comprehensive utilization is and in particular to a kind of prepared using steel slag tailing slurry and desulfurization ash
The method of air-entrained concrete building block.
Background technology
By the method for magnetic separation, the ferrum in slag is selected and is used, due to ferrum in slag many with wrapped shape
Formula exists, and carries out magnetic in order to improve the response rate of efficiency of magnetic separation and ferrum again it is necessary to carry out to slag being milled to very thin granularity
Choosing.The remaining substantial amounts of tail mud of meeting during reclaimed ferrum using wet ball-milling and wet magnetic separation, is difficult to because water content is high
Using, although its silicate mineral content is very high, needs to be dried dehydration due to before application, increased and utilize cost,
Thus fail to utilize well, it is deposited in plant area more.Existing reported in literature utilize the clay standby cement mixture of tail, concrete and
((1) Fang Honghui etc., steel slag tailing slurry prepares the experimental study of agglutination material, Henan building materials, the 5th phase 54-56 in 2009 to slag micropowder etc.
Page；(2) Liu Zhiwei etc., the experimentation of converter slag ball milling tail mud activating technology, cement technology, the 1st phase 41-44 in 2011
Page；(3) Liu Zhiwei etc., converter slag ball milling tail mud powder makees the research of concrete admixture, concrete, the 10th phase 76- in 2010
Page 79.), but due to drying and ball milling the steel slag tailing slurry of moisture content more than 30%, energy consumption is higher, simultaneously as adopting wet method ball
Mill, activity relatively low, thus compared with other mixing materials competitiveness weaker it is difficult to utilize.
CFBB can produce the desulfurization ash of substantial amounts of limy and Gypsum Fibrosum when with furnace sorbent injection desulfurization, lives
Property is lower than coal-powder boiler flyash, and water demand ratio is larger, thus utilization is less in cement concrete.
Air-entrained concrete building block is a kind of novel energy-conserving building materials, and the features such as have energy-conserving and environment-protective, its raw materials for production is mainly
The cement of calcic, Calx etc. and siliceous sand, flyash, slag etc., and steel slag tailing slurry and circulating fluid bed boiler desulfurization lime-ash
Calcium oxide and silica content all higher, thus the present invention utilizes steel slag tailing slurry and recirculating fluidized bed desulfurization ash to produce aerating
Concrete segment is it is achieved that the comprehensive utilization of solid waste.A kind of slag of Chinese Patent Application No. 201310081667.4 is made
A kind of similar method is disclosed in the production method of foam concrete block, clay also with the tail after slag steel scoria magnetic separation
Standby concrete segment, but difference is, used in the application, raw material is the tail mud after steel slag dry method crushes, using before need to be again
Through dry ball milling, its preparation is foam concrete block, only through low temperature reservation, long the production cycle, and performance is not so good as steam pressure
Air-entrained concrete building block.Chinese Patent Application No. 201510334661.2 is a kind of to be manufactured and discloses with wet in the method for aerated-block
Steel slag tailing slurry after method ball milling prepares air-entrained concrete building block, but employs more slag micropowder in the method, and cost is relatively
High.
Content of the invention
For overcoming the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide one kind using steel slag tailing slurry and to take off
The method that sulfur lime-ash prepares air-entrained concrete building block, to the tail mud of the high-moisture percentage that slag produces during magnetic separation and following
The desulfurization ash of circulation fluidized bed boiler is comprehensively utilized.
In order to solve above technical problem, the present invention is achieved by the following technical programs.
The invention provides a kind of method preparing air-entrained concrete building block using steel slag tailing slurry and desulfurization ash, the method
Including following operation:
(1) dehydration procedure: steel slag tailing slurry is dehydrated and is less than 35% to moisture content；Described steel slag tailing slurry refers to that slag passes through
Remaining tail mud after magnetic separation recovery fe therein and iron-bearing mineral again after broken and wet ball grinding, granularity requirements are
0.08mm square hole screen tails over less than 15%.
(2) ball milling operation: fluvial sand, desulfurization ash and quick lime are milled to respectively the fineness of requirement；Described desulfurization ash
Refer to that CFBB adopts the flying dust that furnace sorbent injection desulfurization technique produces and slag, after ball milling to fineness be
0.08mm square hole screen tails over less than 15%；Described quick lime fineness tails over no more than 25% for 0.08mm square hole screen；Described river
Grain fineness number tails over as 15～25% for 0.08mm square hole screen.
(3) compounding process a: the steel slag tailing slurry after waterglass, water, cement and step (1) are dehydrated and step (2) ball
Fluvial sand after mill, desulfurization ash, quick lime add mixing plant after measuring in proportion, make serosity 1 under vigorous stirring.
(4) compounding process b: weigh foam stabilizer and aluminium powder cream in proportion, and add them into and make 3～6wt%'s in water
Serosity 2, then this serosity 2 is added in serosity 1 be sufficiently stirred for, prepared slip.
(5) foaming and quiet maintenance operation of stopping: the slip injection die for molding that step (4) is obtained forms building block, goes forward side by side
Row foaming stops maintenance with quiet；The described quiet curing condition that stops is: quiet at 55～65 DEG C stops maintenance 4～6 hours.
(6) hydro-thermal steam press maintenance operation: the building block after step (5) molding is sent in still kettle after form removal, cutting
Row steam press maintenance；The condition of described steam press maintenance is: maintenance 6～8 hours in the saturated vapor that 170～190 DEG C of temperature, makes and adds
Gas concrete segment.
Wherein: in described compounding process a, in terms of dry material quality, every 100kg compound contains: steel slag tailing slurry 25～
45kg, cement 3～8kg, quick lime 4～8g, fluvial sand 10～20kg, desulfurization ash 24～45kg, waterglass 1～2kg.
In described compounding process b, the compound in every 100kg compounding process a adds aluminium powder cream 0.05～0.09kg, surely again
Infusion 0.02～0.05kg.
In above-mentioned operation, the water yield sum that total amount of water is carried with material each in raw material for amount of water, account for compound with
The 60～65% of dry material meter gross mass.[in terms of dry material quality, when to refer to each raw materials quality of indication in proportioning be aqueous
Quality, but during actual metered, the quality of each raw material need to add contained humidity quality.If the quality of certain raw material is m in proportioning1Kg,
The moisture content of this raw material is w1%, m1Then refer to this raw material and be entirely free of quality during moisture, actual quality m weighing during this raw material2
For: m2=m1/(1-w1%)]
Optimize as a kind of, the cement in described compounding process a is portland cement or Portland cement, and grade is not
Less than 42.5 grades.
Optimize as a kind of, the quick lime in described ball milling operation, its content of free calcium oxide is not less than 70wt%；Fluvial sand
Sio2Content is not less than 65%, and fineness tails over as 15～25% for 0.08mm square hole screen.
Optimize as a kind of, the fluvial sand in described ball milling operation, its sio2Content is not less than 65%, and its fineness is 0.08mm
Square hole screen tails over as 15～25%.
Optimize as a kind of, the foam stabilizer in described compounding process b is any one in Fructus Gleditsia powder, pull open powder and tea saponin
Kind.
Compared with prior art, the present invention has following technical effect that
1st, the present invention adopts steel slag tailing slurry to replace part Calx and cement, and desulfurization ash replaces part Calx, Gypsum Fibrosum and sand
To prepare air-entrained concrete building block, total volume of steel slag tailing slurry and desulfurization ash up to 65% (mass ratio) more than, solve steel
Slag tail mud and the Utilizing question of desulfurization ash, greatly reduce cost of material simultaneously.
2nd, need not dry in the preparation by steel slag tailing slurry for the present invention, can be directly used in and prepare air entrained concrete block after dehydration
Block, reduces drying cost.As can be seen here, method provided by the present invention not only greatly reduces cost, and process is simple,
It is very suitable for industrial mass production.
3rd, the air-entrained concrete building block density prepared by the present invention is low, heat conductivity is low, sound insulation and comprcssive strength performance
All good, properties of product reach the a3.5b06 class requirement of gb11968-2006 " autoclave aerated concrete building block ".
Specific embodiment
Below in conjunction with specific embodiment, the present invention is elaborated, but the present invention is not limited to following embodiments.
Embodiment 1
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 13.9%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 11.5%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 24.7%, quick lime is milled to 0.08mm square hole screen and tails over as 14.1%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 32.5kg, cement 8kg, quick lime 4kg, fluvial sand 10kg, desulfurization ash 44kg and waterglass 1.5kg.Always
Amount of water is 62.5kg, and total amount of water includes biodiversity, waterglass and the water brought in steel slag tailing slurry, waterglass and serosity 2
Add after mixing.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, in quick lime
The content of free calcium oxide be not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.09kg and pull open powder 0.05kg, adding water is made into mass fraction and is
The serosity 2 of 6wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 60 DEG C stops maintenance 4 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 170 DEG C of temperature 7 hours, makes air-entrained concrete building block.
Make air-entrained concrete building block product in the present embodiment to test by gb/t 2542-2012 " Test methods for wall bricks "
The comprcssive strength obtaining is 4.6mpa, dry density 553kg/m3, drying shrinkage value 0.21mm/m, mass loss after jelly is 2.4%, freezes
Comprcssive strength 3.9mpa afterwards, dry state heat conductivity is 0.091w/ (m k).Properties of product reach gb11968-2006, and " steam pressure adds
Gas concrete segment " a3.5b06 class requirement.
Embodiment 2
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 14.3%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 13.4%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 17.6%, quick lime is milled to 0.08mm square hole screen and tails over as 14.5%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 32.5kg, cement 5kg, quick lime 8kg, fluvial sand 15kg, desulfurization ash 37kg and waterglass 1.5kg.Always
Amount of water is 60kg, and total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, and waterglass is mixed with water
Add after conjunction.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, in quick lime
The content of free calcium oxide is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.08kg and Fructus Gleditsia powder 0.03kg, adding water is made into mass fraction and is
The serosity 2 of 3wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 55 DEG C stops maintenance 4 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 190 DEG C of temperature 6 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product made in the present embodiment can reach a3.b05 grade.
Embodiment 3
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 14.3%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 13.4%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 15.3%, quick lime is milled to 0.08mm square hole screen and tails over as 24.1%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 45kg, cement 3kg, quick lime 7kg, fluvial sand 20kg, desulfurization ash 24kg and waterglass 1kg.Always add water
Measure as 60kg, total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, after waterglass is mixed with water
Add.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, effective in quick lime
Calcium oxide content is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.07kg and tea saponin 0.02kg, adding water is made into mass fraction and is
The serosity 2 of 3wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 55 DEG C stops maintenance 6 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 170 DEG C of temperature 8 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product that the present embodiment is made can reach a3.5b06 grade.
Embodiment 4
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 14.3%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 13.4%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 20.6%, quick lime is milled to 0.08mm square hole screen and tails over as 14.5%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 25kg, cement 7kg, quick lime 8kg, fluvial sand 14kg, desulfurization ash 45kg and waterglass 1kg.Always add water
Measure as 65kg, total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, after waterglass is mixed with water
Add.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, effective in quick lime
Calcium oxide content is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.06kg and pull open powder 0.04kg, adding water is made into mass fraction and is
The serosity 2 of 4wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 55 DEG C stops maintenance 5 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 180 DEG C of temperature 7 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product that the present embodiment is made can reach a3.5b06 grade.
Embodiment 5
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 12.7%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 10.5%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 24.7%, quick lime is milled to 0.08mm square hole screen and tails over as 14.5%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 30kg, cement 6kg, quick lime 7kg, fluvial sand 12kg, desulfurization ash 44kg and waterglass 1kg.Always add water
Measure as 62.5kg, total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, and waterglass is mixed with water
After add.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, having in quick lime
Effect calcium oxide content is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.05kg and tea saponin 0.05kg, adding water is made into mass fraction and is
The serosity 2 of 5wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 65 DEG C stops maintenance 4 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 170 DEG C of temperature 8 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product that the present embodiment is made can reach a3.5b06 grade.
Embodiment 6
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 14.3%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 13.4%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 17.6%, quick lime is milled to 0.08mm square hole screen and tails over as 24.1%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 34kg, cement 6kg, quick lime 7kg, fluvial sand 17kg, desulfurization ash 34kg and waterglass 2kg.Always add water
Measure as 65kg, total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, after waterglass is mixed with water
Add.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, effective in quick lime
Calcium oxide content is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.06kg and Fructus Gleditsia powder 0.04kg, adding water is made into mass fraction and is
The serosity 2 of 4wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 60 DEG C stops maintenance 5 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 190 DEG C of temperature 7 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product that the present embodiment is made can reach a3.5b06 grade.
Embodiment 7
(1) dehydration procedure: with belt type dewaterer, steel slag tailing slurry is dehydrated and is less than 35% to moisture content, its fineness is 0.08mm
Square hole screen tails over 14.3%；
(2) ball milling operation: with ball mill, desulfurization ash is milled to 0.08mm square hole screen and tails over as 13.4%, use ball mill
Fluvial sand is milled to 0.08mm square hole screen and tails over as 17.6%, quick lime is milled to 0.08mm square hole screen and tails over as 14.5%.
(3) compounding process a: by proportioning by steel slag tailing slurry, cement, quick lime, fluvial sand, desulfurization ash, each raw material of waterglass
Add in pulping equipment after metering, serosity 1 is made in the stirring that adds water.In this example, in terms of dry material quality, every 100kg raw material
Include: steel slag tailing slurry 36kg, cement 5kg, quick lime 6kg, fluvial sand 15kg, desulfurization ash 36.5kg and waterglass 1.5kg.Always
Amount of water is 60kg, and total amount of water includes the biodiversity brought in steel slag tailing slurry, waterglass and serosity 2, and waterglass is mixed with water
Add after conjunction.In raw material, cement is portland cement or Portland cement, and grade is not less than 42.5 grades, in quick lime
The content of free calcium oxide is not less than 70wt.%.
(4) compounding process b: by proportioning by aluminium powder cream 0.07kg and Fructus Gleditsia powder 0.04kg, adding water is made into mass fraction and is
The serosity 2 of 3wt.%, serosity 2 is added in serosity 1 and continues to stir into slip.
(5) foaming and quiet stop maintenance operation: slip is injected die for molding, and be sent to quiet stop fog room carry out foaming and
Quiet stop maintenance, the quiet curing condition that stops is: quiet at 60 DEG C stops maintenance 6 hours.
(6) hydro-thermal steam press maintenance operation: above-mentioned operation shaping building block is delivered in still kettle after form removal, cutting and is steamed
Pressure maintenance, the condition of described steam press maintenance is maintenance in the saturated vapor of 170 DEG C of temperature 7 hours, makes air-entrained concrete building block.
After tested, the air-entrained concrete building block properties of product that the present embodiment is made can reach a3.5b06 grade.
Claims (5)
1. a kind of prepare the method for air-entrained concrete building block it is characterised in that the method bag using steel slag tailing slurry and desulfurization ash
Include following operation:
(1) dehydration procedure: steel slag tailing slurry is dehydrated and is less than 35% to moisture content；Described steel slag tailing slurry refers to that slag passes through to crush
With remaining tail mud after magnetic separation recovery fe therein and iron-bearing mineral again after wet ball grinding, granularity requirements are 0.08mm
Square hole screen tails over less than 15%；
(2) ball milling operation: fluvial sand, desulfurization ash and quick lime are milled to respectively the fineness of requirement；Described desulfurization ash refers to
CFBB adopt furnace sorbent injection desulfurization technique produce flying dust and slag, after ball milling to fineness be 0.08mm side
Hole sizer tails over less than 15%；Described quick lime fineness tails over no more than 25% for 0.08mm square hole screen；Described fluvial sand fineness is
0.08mm square hole screen tails over as 15～25%；
(3) compounding process a: after the steel slag tailing slurry after the dehydration of waterglass, water, cement and step (1) and step (2) ball milling
Fluvial sand, desulfurization ash, quick lime add mixing plant after measuring in proportion, make serosity 1 under vigorous stirring；
(4) compounding process b: weigh foam stabilizer and aluminium powder cream in proportion, and add them into the serosity making 3～6wt% in water
2, then this serosity 2 is added in serosity 1 be sufficiently stirred for, prepared slip；
(5) foaming and quiet maintenance operation of stopping: the slip injection die for molding that step (4) is obtained forms building block, and carries out sending out
Bubble stops maintenance with quiet；The described quiet curing condition that stops is: quiet at 55～65 DEG C stops maintenance 4～6 hours；
(6) hydro-thermal steam press maintenance operation: the building block after step (5) molding is sent in still kettle after form removal, cutting and is steamed
Pressure maintenance；The condition of described steam press maintenance is: maintenance 6～8 hours in the saturated vapor that 170～190 DEG C of temperature, makes aerating and mixes
Solidifying earth building blocks；
Wherein: in described compounding process a, in terms of dry material quality, every 100kg compound contains: steel slag tailing slurry 25～45kg,
Cement 3～8kg, quick lime 4～8g, fluvial sand 10～20kg, desulfurization ash 24～45kg, waterglass 1～2kg；
In described compounding process b, the compound in every 100kg compounding process a adds aluminium powder cream 0.05～0.09kg, foam stabilizer again
0.02～0.05kg；
In above-mentioned operation, the water yield sum that total amount of water is carried with material each in raw material for amount of water, account for compound with dry
The 60～65% of material meter gross mass.
2. a kind of method preparing air-entrained concrete building block using steel slag tailing slurry and desulfurization ash as described in claim 1
In it is characterised in that cement in described compounding process a is portland cement or Portland cement, grade is not less than
42.5 grades.
3. a kind of method preparing air-entrained concrete building block using steel slag tailing slurry and desulfurization ash as described in claim 1
In it is characterised in that quick lime in described ball milling operation, its content of free calcium oxide is not less than 70wt%；The sio of fluvial sand2
Content is not less than 65%, and fineness tails over as 15～25% for 0.08mm square hole screen.
4. a kind of method preparing air-entrained concrete building block using steel slag tailing slurry and desulfurization ash as described in claim 1
In it is characterised in that fluvial sand in described ball milling operation, its sio2Content is not less than 65%, and its fineness is 0.08mm square hole screen
Tail over as 15～25%.
5. a kind of method preparing air-entrained concrete building block using steel slag tailing slurry and desulfurization ash as described in claim 1
In it is characterised in that foam stabilizer in described compounding process b is any one in Fructus Gleditsia powder, pull open powder and tea saponin.
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| CN107324844A (en) * | 2017-05-18 | 2017-11-07 | 商洛学院 | A kind of method of the clay standby air-entrained concrete building block of steel scoria magnetic separation tail |
| CN108218365A (en) * | 2017-12-06 | 2018-06-29 | 中国十七冶集团有限公司 | A kind of method that steam-pressing brisk is prepared using steel scoria magnetic separation tail mud and commercial lime |
| CN110436954A (en) * | 2019-07-26 | 2019-11-12 | 江苏禾吉新材料科技有限公司 | A kind of preparation method of autoclave aerated concrete building block |
| CN111499329A (en) * | 2020-04-30 | 2020-08-07 | 安徽工业大学 | Autoclaved sand-lime brick containing steel slag tail mud and preparation method thereof |
| CN112476751A (en) * | 2020-12-01 | 2021-03-12 | 湖北理工学院 | Production line for preparing concrete blocks |
| CN113105195A (en) * | 2021-02-24 | 2021-07-13 | 黄石市旺新环保科技有限公司 | Foam concrete block manufactured by utilizing solid waste and preparation method thereof |
| CN113698229A (en) * | 2021-09-15 | 2021-11-26 | 浙江天地环保科技股份有限公司 | Process for maintaining fly ash aerated building block by coupling steam and carbon dioxide |
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| CN107324844A (en) * | 2017-05-18 | 2017-11-07 | 商洛学院 | A kind of method of the clay standby air-entrained concrete building block of steel scoria magnetic separation tail |
| CN108218365A (en) * | 2017-12-06 | 2018-06-29 | 中国十七冶集团有限公司 | A kind of method that steam-pressing brisk is prepared using steel scoria magnetic separation tail mud and commercial lime |
| CN110436954A (en) * | 2019-07-26 | 2019-11-12 | 江苏禾吉新材料科技有限公司 | A kind of preparation method of autoclave aerated concrete building block |
| CN111499329A (en) * | 2020-04-30 | 2020-08-07 | 安徽工业大学 | Autoclaved sand-lime brick containing steel slag tail mud and preparation method thereof |
| CN111499329B (en) * | 2020-04-30 | 2022-06-07 | 安徽工业大学 | Autoclaved sand-lime brick containing steel slag tail mud and preparation method thereof |
| CN112476751A (en) * | 2020-12-01 | 2021-03-12 | 湖北理工学院 | Production line for preparing concrete blocks |
| CN113105195A (en) * | 2021-02-24 | 2021-07-13 | 黄石市旺新环保科技有限公司 | Foam concrete block manufactured by utilizing solid waste and preparation method thereof |
| CN113831033A (en) * | 2021-07-30 | 2021-12-24 | 辽宁壹立方砂业有限责任公司 | Desulfurized fly ash-steel slag composite gelled composition and desulfurized fly ash-steel slag composite gelled material |
| CN113698229A (en) * | 2021-09-15 | 2021-11-26 | 浙江天地环保科技股份有限公司 | Process for maintaining fly ash aerated building block by coupling steam and carbon dioxide |
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