CN108558333A - A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction - Google Patents
A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction Download PDFInfo
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- CN108558333A CN108558333A CN201810712281.1A CN201810712281A CN108558333A CN 108558333 A CN108558333 A CN 108558333A CN 201810712281 A CN201810712281 A CN 201810712281A CN 108558333 A CN108558333 A CN 108558333A
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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
- C04B28/10—Lime cements or magnesium oxide cements
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/78—Preparation by contact processes characterised by the catalyst used
- C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/0693—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process from waste-like raw materials, e.g. fly ash or Bayer calcination dust
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/08—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals with sodium carbonate, e.g. sinter processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
- C01F7/142—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/303—Alumina
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
-
- 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
Abstract
The present invention provides a kind of techniques with ardealite and flyash relieving haperacidity coproduction fire prevention aerated bricks, include the following steps：Ardealite, flyash, additive and modifying agent are mixed and ground, raw material are made, be sent into roasting in kiln, clinker is made, water mill dissolution is carried out to clinker, and be separated by solid-liquid separation, sulfuric acid is made in isolated solid roasting post-processing, and isolated liquid adds CO2Aluminium hydroxide is obtained, fire prevention aerated bricks are made in aluminium hydroxide with cement, lime, kaolinite, quartz, ammonium persulfate, calcium silicates, pva powder, attapulgite and rubber powder again.The present invention comprehensively utilizes ardealite and flyash, and having can reduce environmental pollution, and added value is high, and aluminium hydroxide obtained is the very good material of production fire prevention aerated bricks, and the fire prevention aerated bricks of preparation have the advantages that production cost is low.
Description
Technical field
The present invention relates to a kind of techniques with ardealite and flyash relieving haperacidity coproduction fire prevention aerated bricks, belong to chemical metallurgy neck
Domain.
Background technology
Ardealite refer in phosphoric acid production with sulfuric acid treating phosphorite when the solid slag that generates, main component is sulfuric acid
Calcium additionally contains various other impurity.Currently, it is about hundred million tons of 1.2-1.4 that ardealite total amount is discharged in the whole world every year, China is about
It is 50,000,000 tons or so, accounts for the 25-29% of global year discharge ardealite total amount, this quantity is in increase trend, and domestic phosphorus at present
For gypsum heap high-volume up to 2.5 hundred million tons, the phosphogypsum slag of discharge occupies a large amount of soils, forms slag mountain, seriously pollutes environment.
Flyash is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is the main solid of coal-burning power plant's discharge
Body waste.With the development of power industry, the flyash discharge capacity of coal-burning power plant increases year by year, and it is current that flyash has become China
Larger one of the industrial residue of discharge capacity.Now currently, China's flyash annual output is built more than 600,000,000 tons to the national economy in China
And if ecological environment causes huge pressure.
Aerated bricks are also referred to as air-entrained concrete building block, using very extensively, be used primarily in machinery plant and civil buildings
In materials for wall, filling wall, load-bearing walling and the non-bearing material and surrounding such as floor and roof boarding filling enclosure wall.Aerating
Brick occurs a series of having many advantages, such as that light-weight, thermal and insulating performance is good, shock resistance is strong and processing performance is good with development
All kinds of aerated bricks, wherein existing fire prevention aerated bricks have preferable fire resistance, it is safe, receive extensive favor.But
Be now at present due to fire prevention aerated bricks primary raw material aluminium hydroxide the market price costly, result in its production cost mistake
High problem.
Now currently, China's one side ardealite and flyash all have the problem of bulk deposition, pollution environment, on the other hand
All there is also many useful constituents in ardealite and flyash.Utilization of the people to ardealite and flyash at present be all mainly
For building materials aspect, but acid present in ardealite can cause building material quality bad, and the additional output value of this Land use systems
It is relatively low.The technique of comprehensive utilization ardealite and flyash relieving haperacidity co-production fire prevention aerated bricks at present, has not been reported.
Goal of the invention
The object of the present invention is to provide a kind of techniques with ardealite and flyash relieving haperacidity coproduction fire prevention aerated bricks.The present invention
Ardealite and flyash are comprehensively utilized, having can reduce environmental pollution, and added value is high, and aluminium hydroxide obtained is raw
The very good material of production fire prevention aerated bricks, the fire prevention aerated bricks of preparation have the advantages that production cost is low.
Technical scheme of the present invention
A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, includes the following steps：
A, ardealite, flyash, additive and modifying agent are mixed and are ground and raw material are made, be sent into roasting in kiln, clinker is made,
Water mill dissolution is carried out to clinker, and is separated by solid-liquid separation；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is roasted
It burns, then the flue gas that roasting is generated is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then dries precipitation, be made
Aluminium hydroxide；
D, aluminium hydroxide and cement, lime, kaolinite, quartz, ammonium persulfate, calcium silicates, polyvinyl alcohol powder is made in step C
It is uniformly mixed in end, attapulgite and rubber powder input batch mixer, then crushes, grind to obtain mixture, water is added, stirs evenly
Obtain slurry, by slurry injection die casting at adobe, adobe is put into steam-cured in steam-cured kettle, fire prevention aerated bricks is made.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step A, the additive is carbon
Sour sodium, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue；The kiln is industrial rotary kiln, Industry Tunnel Kiln
Or industrial shaft kiln.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step A, in the raw material,
Ardealite and flyash are according to 1.4:The ratio of 1-1.5 weight ratios mixes, and additive adding proportion presses contained Na in raw material2O and
Al2O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 14-26% of raw material total weight；The roasting
Temperature be 1060-1360 DEG C, time 1.5-4h；It is 4-7 that liquid when the water mill dissolution, which consolidates volume ratio,:1.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step B, the temperature of the roasting
1000-1200℃；Time is 2-5h；Condition is that sulfide is placed under the oxygen-enriched environment of 40-45%.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step C, the temperature of the drying
It it is 100-120 DEG C, moisture is less than 0.5% after precipitation drying.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, by weight, in step D, institute
State fire prevention aerated bricks include 18-25 part aluminium hydroxides and 20-25 parts of cement, 15-20 parts of lime, 11-16 parts of kaolinites, 7-10 parts
Quartz, 2-3 part ammonium persulfate, 15-20 parts of calcium silicates, 1-2 parts of pva powders, 7-8 parts of attapulgites and 3-5 parts of rubber
Powder.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is described to grind to obtain mixing in step D
Material is 80-100 mesh.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step D, the mixture and water
Weight ratio be 1：1-1.2.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, in step D, the steam-cured temperature
It is 180-190 DEG C, time 10-15h.
The technique of aerated bricks above-mentioned of being prevented fires with ardealite and flyash relieving haperacidity coproduction, the steam-cured temperature is 185 DEG C,
Time is 12h.
The present invention is by by ardealite and high-sulfur bauxite reaction, recombination, making utility.The overall reaction of principle
Formula is：
CaSO4（Ardealite）+Na2O·SiO2·Al2O3（Flyash）→Na2O·Al2O3+CaO·SiO2↓+[sulphur]
From the reaction equation it is found that with the SiO in the CaO and flyash in ardealite2Generate calcium orthosilicate（CaO·SiO2↓）Afterwards,
Obtain soluble fabulous sodium aluminate（Na2O·Al2O3）.[sulphur] in reaction equation refers to adding modifying agent technique by raw material, raw
At metal sulfide, main component FeS；After leaching the sodium aluminate in clinker, obtained sediment flotation can be obtained
To FeS.
Advantageous effect
1, the present invention is by by ardealite and total utilization of PCA, through grinding, water mill dissolution after additive package and modifying agent
After be separated by solid-liquid separation, you can obtain the clearly demarcated product of ingredient, can largely consume ardealite and flyash, reduce ardealite and powder
Pollution of the coal ash to environment.
2, the present invention is after industrial residue phosphogypsum, flyash, additive and modifying agent mixed grinding by will roast, then into
Row water mill is dissolved out and is separated by solid-liquid separation, and low raw-material cost is simple for process, and the basis metal vulcanization that roasting process is formed
Object, meta-aluminate and silicate component are clearly demarcated, can individually extract recycling, substantially increase the additional of ardealite and flyash
Value.
3, the present invention utilizes waste material ardealite and flyash, in addition additive and modifying agent is as raw material, after roasting by
Water mill, which is dissolved out and is separated by solid-liquid separation, can obtain the clearly demarcated product of ingredient, organic matter is free of after roasting in product, after being especially advantageous for
Phase extracts product each component respectively, obtains liquid in being especially separated by solid-liquid separation, almost contains only soluble sodium metaaluminate,
It is passed through CO2It can be obtained the very high aluminium hydroxide of purity after gas, purity is to prepare the good of aerated bricks of preventing fires up to 98% or more
Good raw material.
4, the present invention is by cheap industrial residue phosphogypsum and flyash, in addition certain additive and modifying agent are made
Simple for process, the low raw-material cost of aluminium hydroxide, the cost of gained aluminium hydroxide is very low, for producing fire prevention aerated bricks, greatly
The big production cost for reducing fire prevention aerated bricks.
5, the present invention after industrial residue phosphogypsum, flyash, additive and modifying agent mixed grinding by will roast, then water
It is separated by solid-liquid separation after mill dissolution, then extraction obtains sulfuric acid from the precipitation isolated, production cost is low, simple for process.
Experimental data
Embodiment 1-5 aerated bricks obtained of preventing fires are sampled, refractory temperature, thermal coefficient and Density Detection are carried out.Obtain 1 data of table.
Specific implementation mode
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
The embodiment of the present invention
Embodiment 1：A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, in raw material, ardealite and flyash
According to 1:The ratio of 1.5 weight ratios mixes, and sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecule of summation
Than being 1:The mixed proportion of 1 addition, carbon is roasting in the industrial shaft kiln of 14% feeding of raw material total weight, and calcination temperature is 1360 DEG C,
Roasting time is 1.5h, and clinker is made, and carries out water mill dissolution to clinker, and is separated by solid-liquid separation, and liquid consolidates volume ratio and is when separation
4:1；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is placed in
Under 40% oxygen-enriched environment, 5h is roasted at 1000 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction, use is dense
Sulfuric acid is absorbed, and sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then will be deposited at 100 DEG C
Drying crushes until after moisture is less than 0.5%, and aluminium hydroxide is made；
D, by weight, aluminium hydroxide and 25 parts of cement, 20 parts of lime, 16 parts of kaolinites, 10 parts of stones is made in 25 parts of step C
Diamond stone, 3 parts of ammonium persulfates, 20 parts of calcium silicates, 2 parts of pva powders, 8 parts of attapulgites and 5 parts of rubber powders put into batch mixer
In be uniformly mixed, then crush, ground 100 mesh screen obtains mixture, with the weight ratio of mixture and water be 1：1 is added water,
What is stirred evenly obtains slurry, and by slurry injection die casting at adobe, it is 190 DEG C of steamings that adobe, which is put into steam-cured kettle with temperature,
15h is supported, fire prevention aerated bricks are made.
Embodiment 2：A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, in raw material, ardealite and flyash
According to 1.4:The ratio of 1 weight ratio mixes, and sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecule of summation
Than being 1:The mixed proportion of 1 addition, carbon is roasting in the industrial shaft kiln of 26% feeding of raw material total weight, and calcination temperature is 1060 DEG C,
Roasting time is 4h, and clinker is made, and carries out water mill dissolution to clinker, and is separated by solid-liquid separation, and it is 7 that liquid, which consolidate volume ratio, when separation:
1；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is placed in
Under 45% oxygen-enriched environment, 2h is roasted at 1200 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction, use is dense
Sulfuric acid is absorbed, and sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then will be deposited at 120 DEG C
Drying crushes until after moisture is less than 0.5%, and aluminium hydroxide is made；
D, by weight, aluminium hydroxide and 20 parts of cement, 15 parts of lime, 11 parts of kaolinites, 7 parts of stones is made in 18 parts of step C
Diamond stone, 2 parts of ammonium persulfates, 15 parts of calcium silicates, 1 part of pva powder, 7 parts of attapulgites and 3 parts of rubber powders put into batch mixer
In be uniformly mixed, then crush, ground 80 mesh screen obtains mixture, with the weight ratio of mixture and water be 1：1.2 are added water,
What is stirred evenly obtains slurry, and by slurry injection die casting at adobe, it is 180 DEG C of steamings that adobe, which is put into steam-cured kettle with temperature,
10h is supported, fire prevention aerated bricks are made.
Embodiment 3：A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, in raw material, ardealite and flyash
According to 1:The ratio of 1 weight ratio mixes, and sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation
It is 1:The mixed proportion of 1 addition, carbon is roasting in the industrial shaft kiln of 18% feeding of raw material total weight, and calcination temperature is 1100 DEG C, is roasted
The burning time is 3.5h, and clinker is made, and carries out water mill dissolution to clinker, and is separated by solid-liquid separation, and it is 5 that liquid, which consolidate volume ratio, when separation：
1；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is placed in
Under 42% oxygen-enriched environment, 5h is roasted at 1100 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction, use is dense
Sulfuric acid is absorbed, and sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then will be deposited at 110 DEG C
Drying crushes until after moisture is less than 0.5%, and aluminium hydroxide is made；
D, by weight, aluminium hydroxide and 23 parts of cement, 18 parts of lime, 14 parts of kaolinites, 8 parts of stones is made in 121 parts of step C
Diamond stone, 2.5 parts of ammonium persulfates, 18 parts of calcium silicates, 1.5 parts of pva powders, 7.5 parts of attapulgites and 4 parts of rubber powder inputs
It is uniformly mixed in batch mixer, then crushes, ground 90 mesh screen obtains mixture, with the weight ratio of mixture and water for 1：1.1
Water is added, what is stirred evenly obtains slurry, and slurry is injected die casting into adobe, adobe is put into steam-cured kettle is with temperature
Fire prevention aerated bricks are made in 185 DEG C of steam-cured 12h.
Embodiment 4：A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, in raw material, ardealite and flyash
According to 1.1:The ratio of 1.3 weight ratios mixes, and sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3Point of summation
Son is than being 1:The mixed proportion of 1 addition, carbon is roasting in the industrial shaft kiln of 21% feeding of raw material total weight, calcination temperature 1200
DEG C, clinker is made in roasting time 3h, carries out water mill dissolution to clinker, and is separated by solid-liquid separation, and liquid consolidates volume ratio 6 when separation:
1；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is placed in
Under 43% oxygen-enriched environment, 3h is roasted at 1150 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction, use is dense
Sulfuric acid is absorbed, and sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then will be deposited at 110 DEG C
Drying crushes until after moisture is less than 0.5%, and aluminium hydroxide is made；
D, by weight, aluminium hydroxide and 22 parts of cement, 17 parts of lime, 13 parts of kaolinites, 8 parts of stones is made in 20 parts of step C
Diamond stone, 2.5 parts of ammonium persulfates, 17 parts of calcium silicates, 1.5 parts of pva powders, 7.5 parts of attapulgites and 4 parts of rubber powder inputs
It is uniformly mixed in batch mixer, then crushes, ground 85 mesh screen obtains mixture, with the weight ratio of mixture and water for 1：1.1
Water is added, what is stirred evenly obtains slurry, and slurry is injected die casting into adobe, adobe is put into steam-cured kettle is with temperature
Fire prevention aerated bricks are made in 185 DEG C of steam-cured 12h.
Embodiment 5：A kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, in raw material, ardealite and flyash
According to 1.3:The ratio of 1.4 weight ratios mixes, and sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3Point of summation
Son is than being 1:The mixed proportion of 1 addition, carbon is roasting in the industrial shaft kiln of 24% feeding of raw material total weight, calcination temperature 1300
DEG C, clinker is made in roasting time 1.8h, carries out water mill dissolution to clinker, and is separated by solid-liquid separation, and liquid consolidates volume ratio when separation
6:1；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is placed in
Under 43% oxygen-enriched environment, 3h is roasted at 1150 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction, use is dense
Sulfuric acid is absorbed, and sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then will be deposited at 120 DEG C
Drying crushes until after moisture is less than 0.5%, and aluminium hydroxide is made；
D, by weight, aluminium hydroxide and 24 parts of cement, 19 parts of lime, 15 parts of kaolinites, 9 parts of stones is made in 23 parts of step C
Diamond stone, 2.5 parts of ammonium persulfates, 18 parts of calcium silicates, 1.7 parts of pva powders, 7.8 parts of attapulgites and 4 parts of rubber powder inputs
It is uniformly mixed in batch mixer, then crushes, ground 95 mesh screen obtains mixture, with the weight ratio of mixture and water for 1：1.1
Water is added, what is stirred evenly obtains slurry, and slurry is injected die casting into adobe, adobe is put into steam-cured kettle is with temperature
Fire prevention aerated bricks are made in 188 DEG C of steam-cured 14h.
Claims (10)
1. a kind of technique for aerated bricks of being prevented fires with ardealite and flyash relieving haperacidity coproduction, which is characterized in that include the following steps：
A, ardealite, flyash, additive and modifying agent are mixed and are ground and raw material are made, be sent into roasting in kiln, clinker is made,
Water mill dissolution is carried out to clinker, and is separated by solid-liquid separation；
B, the precipitation being separated by solid-liquid separation in step A is subjected to flotation, isolates sulfide, the sulfide isolated is roasted
It burns, then the flue gas that roasting is generated is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made；
C, CO is added in the liquid being separated by solid-liquid separation into step A2It no longer generates to precipitation, then dries precipitation, hydrogen is made
Aluminium oxide；
D, aluminium hydroxide and cement, lime, kaolinite, quartz, ammonium persulfate, calcium silicates, polyvinyl alcohol powder is made in step C
It is uniformly mixed in end, attapulgite and rubber powder input batch mixer, then crushes, grind to obtain mixture, water is added, stirs evenly
Obtain slurry, by slurry injection die casting at adobe, adobe is put into steam-cured in steam-cured kettle, fire prevention aerated bricks is made.
2. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step A, the additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue；The kiln
For industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
3. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step A, in the raw material, ardealite and flyash are according to 1.4:The ratio of 1-1.5 weight ratios mixes, and additive adds ratio
Example is by contained Na in raw material2O and Al2O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, modifying agent is raw material gross weight
The 14-26% of amount；The temperature of the roasting is 1060-1360 DEG C, time 1.5-4h；Liquid solid product when the water mill dissolution
Than for 4-7:1.
4. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step B, 1000-1200 DEG C of the temperature of the roasting；Time is 2-5h；Condition is that sulfide is placed in the oxygen-enriched ring of 40-45%
Under border.
5. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step C, the temperature of the drying is 100-120 DEG C, and moisture is less than 0.5% after precipitation drying.
6. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
By weight, in step D, the fire prevention aerated bricks include 18-25 parts of aluminium hydroxides and 20-25 parts of cement, 15-20 parts of stones
Ash, 11-16 parts of kaolinites, 7-10 parts of quartzs, 2-3 parts of ammonium persulfates, 15-20 parts of calcium silicates, 1-2 parts of pva powders,
7-8 parts of attapulgites and 3-5 parts of rubber powders.
7. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step D, it is described grind mixture be 80-100 mesh.
8. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step D, the weight ratio of the mixture and water is 1：1-1.2.
9. the technique of aerated bricks according to claim 1 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, it is characterised in that：
In step D, the steam-cured temperature is 180-190 DEG C, time 10-15h.
10. the technique of aerated bricks according to claim 9 of being prevented fires with ardealite and flyash relieving haperacidity coproduction, feature exist
In：The steam-cured temperature is 185 DEG C, time 12h.
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