CN109809754A - Air-entrained concrete building block and preparation method thereof - Google Patents
Air-entrained concrete building block and preparation method thereof Download PDFInfo
- Publication number
- CN109809754A CN109809754A CN201711155826.5A CN201711155826A CN109809754A CN 109809754 A CN109809754 A CN 109809754A CN 201711155826 A CN201711155826 A CN 201711155826A CN 109809754 A CN109809754 A CN 109809754A
- Authority
- CN
- China
- Prior art keywords
- mass parts
- air
- building block
- concrete building
- entrained concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The invention discloses a kind of air-entrained concrete building blocks and preparation method thereof, the composition of raw materials for preparing the air-entrained concrete building block includes: 1500~1850 mass parts of flyash, 0~200 mass parts of alkaline scrap material, 20~220 mass parts of lime, 50~100 mass parts of gypsum, 30~60 mass parts of cement, 1.8~2.4 mass parts of material of getting angry, 0~2 mass parts of dispersing agent, 0~2 mass parts of foam stabilizer, 600~800 parts of water, and the material of getting angry is waste silicon powder and/or useless silicon mud.Air-entrained concrete building block in the present invention can not only recycle corresponding waste silicon powder and/or useless silicon mud, turn waste into wealth, and also reduce the cost of air-entrained concrete building block.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of air-entrained concrete building block and preparation method thereof.
Background technique
Coal ash autoclaved aerating block concrete is to add foaming agent using cement, lime, flyash as primary raw material, pass through
Ingredient, stir, pour, precuring, cutting, steam pressure, the technical process production such as maintenance light porous silicate product.Due to foaming
Afterwards containing a large amount of uniform small stomatas, therefore become air entrained concrete.
In general fly ash aerated piece of production, usually using aluminium powder cream as material of getting angry, principle is: aluminium powder is in alkalinity
Under environment, chemical reaction is generated, Reaction releases hydrogen, so that
Aerated blocks have the characteristic of lightweight.Aerated blocks produce main cost of material in aluminium powder and lime at this stage, occupy about aerating
The 30%-40% of block total production cost, so that aerated blocks higher cost.
Summary of the invention
It is mixed the technical problem to be solved by the present invention is to aiming at the above shortcomings existing in the prior art, provide a kind of aerating
Solidifying earth building blocks and preparation method thereof, which can not only recycle corresponding waste silicon powder and/or useless silicon mud,
Turn waste into wealth, and also reduces the cost of air-entrained concrete building block.
It solves technical solution used by present invention problem and is to provide a kind of air-entrained concrete building block, preparation is described to be added
The composition of raw materials of gas concrete segment includes: 1500~1850 mass parts of flyash, 0~200 mass parts of alkaline scrap material, lime 20
~220 mass parts, 50~100 mass parts of gypsum, 30~60 mass parts of cement, get angry 1.8~2.4 mass parts of material, dispersing agent 0
~2 mass parts, 0~2 mass parts of foam stabilizer, 600~800 parts of water, the material of getting angry is waste silicon powder and/or useless silicon mud.
Silicon powder is able to carry out chemical reaction under alkaline environment,
Reaction releases hydrogen, and theoretically silicon powder can substitute aluminium powder as material of getting angry.Waste silicon powder and/or useless silicon are used in the present invention
Get angry material of the mud as air-entrained concrete building block.
In metallic silicon production process, reduction with carbon silica production metallic silicon is mainly adopted.Due in production process
Gas recycling link can generate a large amount of waste silicon powder and later period in metallic silicon purification process cloth bag recycle waste silicon powder.
Waste silicon powder include: 85mas%~90mas% elemental silicon, 3mas%-5mas% fe, 1mas%-3mas% pure aluminum,
5mas%-10mas% silica, 1mas%-6mas% carbon.Waste silicon powder impurity content is higher, largely can not normally sell,
Environmental pollution is caused after bulk deposition.
Largely useless silicon mud is generated in silicon ingot and the silicon wafer cutting of crystal silicon solar batteries, the silicon mud that gives up includes: 75mas%-
85mas% elemental silicon, 10mas%-20mas% silica, remainder are other impurities.Since useless silicon mud can not carry out reproduction
It utilizes, a large amount of useless silicon mud is carried out outward transport burial and handled by many manufacturers, causes environmental pollution and stock number expense.This two
Class silicon powder quantity is larger, all fails to efficiently use.
Above-mentioned waste silicon powder, useless silicon mud quantity are larger, all fail to efficiently use.The present invention turns waste into wealth, by waste silicon powder and/or
Useless silicon mud is used as the material of getting angry of air-entrained concrete building block, and waste silicon powder, give up get angry material of the silicon mud as air-entrained concrete building block,
There is price low compared with aluminium powder, the advantages that gas forming amount is big, the air-entrained concrete building block in the present invention can not only recycle pair
The waste silicon powder and/or useless silicon mud answered, turn waste into wealth, and also reduce the cost of air-entrained concrete building block.
Since silicon powder reactivity ratio's aluminium powder is low, reaction temperature need to be improved in order to shorten the reaction time.In order to preferably make
The alkali reaction in waste silicon powder and slurry is obtained, this patent utilizes steam heating dry material (alkaline residue, the waste silicon powder that cement, lime mix
With silicon mud), and high-temperature steam heating slurry (70 DEG C -95 DEG C) is passed through when stirring casting, enable waste silicon powder more abundant
Reaction.Since aerated blocks production primary raw material is flyash, so founding the factory generally around power plant, and in aerated blocks production
It is 1.2MPA, the high-temperature high-pressure steam that 185 DEG C of temperature that last steam-cured link, which needs power plant to provide pressure,.
Preferably, 1500~1850 mass parts of flyash, 170~200 mass parts of alkaline scrap material, 20~50 mass of lime
Part, 50~100 mass parts of gypsum, 30~60 mass parts of cement, 1.8~2.4 mass parts of material of getting angry, 0.3~1 mass of dispersing agent
Part, 1~2 amount part of foam stabilizer, 600~800 parts of water.
Preferably, the mass ratio of the alkaline scrap material and the lime is (9:1)~(1:10).In order to preferably reduce
The fixed-end forces cost of production cost and treatment of Power and electrit factory, the present invention is by caustic slag and/or carbide slag and lime
It is mixed used as basic matterial.Caustic slag and carbide slag mostly come from the processes such as power plant and electrolytic aluminium, due to mesh
Preceding caustic slag and carbide slag can not be utilized effectively, these solid wastes needs are spent to transport outward and be buried, and both cause resource
Waste, and cause environmental pollution.In order to solve the problems, such as solid waste, the present invention optimizes it to be built using production air entrained concrete
Block.The dosages such as caustic slag and carbide slag are 0 < x≤90mas%, and surplus is lime；Alkaline scrap material, lime fineness≤190
Mesh, screen over-size≤15%.
In air-entrained concrete building block, if only using lime as basic matterial, then cost is excessively high；If all used
Alkaline scrap material is as basic matterial, then air-entrained concrete building block can not initiate to come.In air-entrained concrete building block in the present invention, institute
The mass ratio for stating alkaline scrap material and the lime is (9:1)~(1:10), not only reduces cost, can also use a small amount of lime
So that air-entrained concrete building block initiates to come.
Preferably, the alkaline scrap material is power plant and/or caustic slag and/or calcium carbide that electrit factory electrolytic aluminium generates
Slag.
Preferably, the caustic slag includes: 70mas%~81mas% calcium hydroxide, 14mas%~29mas% hydrogen
Aluminium oxide, 1mas%~8mas% silica；
The carbide slag includes: the calcium hydroxide of 80mas%~95mas%, 5mas%~10mas% water.
Preferably, the waste silicon powder is the waste silicon powder that generates in metallic silicon production process, the useless silicon mud be crystal silicon too
The useless silicon mud generated in the silicon ingot of positive energy battery and/or silicon wafer cutting.
Preferably, the waste silicon powder include: 85mas%~90mas% elemental silicon, 3mas%~5mas% fe,
1mas%~3mas% pure aluminum, 5mas%~10mas% silica, 1mas%~6mas% carbon；
The useless silicon mud includes: 75mas%~85mas% elemental silicon, 10mas%~20mas% silica.
Preferably, the fineness of the alkaline scrap material≤190 mesh；The fineness of the material of getting angry≤400 mesh.
Preferably, get angry material silicone content be 85mas%~90mas%.
Preferably, the dispersing agent is waterglass, polyethylene glycol, methyl anyl alcohol, cellulose derivative, polyacrylamide
One or more of amine, fatty acid polyethylene glycol ester；
The foam stabilizer be polyvinyl alcohol (PVA) solution of content 10mas%~30mas%, content 20mas%~
Hydroxypropyl methyl cellulose (HPMC) solution of 35mas% ethylene oxide fatty alcohol ethereal solution, content 10mas%~25mas%
One or more of.
Due to waste silicon powder and/or useless silicon mud as air-entrained concrete building block get angry material during agglomeration ratio
More serious, the present invention pre-processes silicon powder using dispersing agent, can reduce agglomeration.Since waste silicon powder and/or silicon mud are subsequent
Reaction of getting angry be to be carried out under alkaline environment, during so acidic dispersion agent not can be selected, in the present invention, the dispersing agent selected is
Property or alkalinity.
The present invention also provides a kind of preparation methods of above-mentioned air-entrained concrete building block, comprising the following steps:
(1) flyash, gypsum, water are mixed with the first slurry, cement, alkaline scrap material, lime, foam stabilizer is added to
The second slurry is obtained in first slurry, it will treated that material of getting angry is added in the second slurry and obtains third material with dispersing agent
Slurry reaches pouring condition to the heating of third slurry；
(2) the third slurry after heating is poured into mold, mold is heated, so that the third slurry in mold
It is quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, obtains air-entrained concrete building block.
The present invention is being stirred using steam heating dry material (alkaline residue, waste silicon powder and silicon mud that cement, lime mix)
It is passed through high-temperature steam heating slurry (70 DEG C -95 DEG C) when casting, waste silicon powder is more fully reacted.Since aerated blocks are raw
Producing primary raw material is flyash, so founding the factory generally around power plant, and steam-cured link last in aerated blocks production needs
It is 1.2MPA, the high-temperature high-pressure steam that 185 DEG C of temperature that power plant, which provides pressure,.
It needs to heat in the step of preparation method of air-entrained concrete building block of the present invention, high-temperature water vapor is passed through steam
Casing is heated, since air-entrained concrete building block production primary raw material is flyash, so found the factory generally around power plant, electricity
Factory can generate flyash, and power plant can provide vapor and step used in the heating of above-mentioned steps (1) and step (2)
(4) vapor used in the steam press maintenance in.
Preferably, third slurry is heated to 50~65 DEG C in the step (1), heating time is 3~5 minutes；
Mold is carried out in the step (2) to be heated to 70~80 DEG C, heating time is 60~120 minutes.
Preferably, in the step (4), the temperature of steam press maintenance is 185~200 DEG C, and pressure is 1.0~1.3MPa,
The time of steam press maintenance is 6~8 hours.
Preferably, in the step (1), the temperature of the second slurry is 5~10 DEG C higher than the temperature of the first slurry.Lime
(calcium oxide) is reacted with water generates silicon hydroxide, releases heat.
Preferably, in the step (1), the temperature of third slurry is 5~10 DEG C higher than the temperature of the second slurry.Lime with
Water reacts the calcium hydroxide generated, the calcium hydroxide in alkaline scrap material and gets angry material (silicon in waste silicon powder and/or useless silicon mud)
Reaction generates calcium metaaluminate, carries out reaction of getting angry.
Air-entrained concrete building block in the present invention can not only recycle corresponding waste silicon powder and/or useless silicon mud, become useless
For treasured, and also reduce the cost of air-entrained concrete building block.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, With reference to embodiment to this
Invention is described in further detail.
Embodiment 1
The present embodiment provides a kind of air-entrained concrete building blocks, and the composition of raw materials for preparing air-entrained concrete building block includes: fine coal
Grey 1500 mass parts, 22.2 mass parts of lime, 60 mass parts of gypsum, 60 mass parts of cement, are got angry at 200 mass parts of alkaline scrap material
2 mass parts of material, 2 mass parts of dispersing agent, 2 mass parts of foam stabilizer, 602 mass parts of water, the material of getting angry in the present embodiment is useless
Silicon powder.
In the present embodiment, the mass ratio of alkaline scrap material and lime is 9:1
In the present embodiment, alkaline scrap material is power plant and the caustic slag that electrit factory electrolytic aluminium generates.Caustic slag includes:
70mas%~81mas% calcium hydroxide, 14mas%~29mas% aluminium hydroxide, 1mas%~8mas% silica.
In the present embodiment, waste silicon powder is the waste silicon powder generated in metallic silicon production process.Waste silicon powder include: 85mas%~
90mas% elemental silicon, 3mas%~5mas% fe, 1mas%~3mas% pure aluminum, 5mas%~10mas% titanium dioxide
Silicon, 1mas%~6mas% carbon.
In the present embodiment, fineness≤190 mesh of alkaline scrap material；Material of getting angry is collected into useless for silicon powder manufacturer cloth bag
Silicon powder, fineness≤400 mesh of waste silicon powder, silicone content >=85%.
In the present embodiment, dispersing agent is waterglass and polyethylene glycol (mass ratio 9:1)；Foam stabilizer is content 10mas%
Polyvinyl alcohol (PVA) solution of~30mas%.
The present embodiment also provides a kind of preparation method of above-mentioned air-entrained concrete building block, and preparation method is according to above-mentioned preparation
The composition of raw materials of air-entrained concrete building block carries out, comprising the following steps:
(1) 1500 mass parts flyash, 60 mass parts gypsum, 600 mass parts water are mixed, is stirred 1 hour, preparation first
Slurry is heated to 45 DEG C using steam jacket.
By caustic slag and lime ball mill grinding, fineness is controlled less than 190 mesh sieve margins 5%, by 60 mass parts water
The lime after alkaline scrap material, the grinding of 22.2 mass parts, 2 mass parts foam stabilizers after mud, the grinding of 200 mass parts are heated to 45 DEG C,
It is added in the first slurry and stirs 10 minutes, obtain the second slurry, be heated to 50 DEG C.Lime (calcium oxide) is reacted with water generates hydrogen
Calcium oxide releases heat.
By 2 mass parts dispersing agents, 2 mass parts get angry material, 2 mass parts water carry out mixed processing 5 minutes, be then added to
Third slurry is obtained in second slurry, is stirred, third slurry is heated, and temperature is increased to 55 DEG C, and heating time is 4 minutes, reaches
To pouring condition.Lime reacts the calcium hydroxide generated, the calcium hydroxide in alkaline scrap material and material (waste silicon powder of getting angry with water
And/or the silicon in useless silicon mud) reaction generation calcium metaaluminate, carry out reaction of getting angry.
(2) the third slurry after heating is poured into mold, mold is heated, be heated to 72 DEG C, heating time
It is 80 minutes, so that the third slurry in mold is quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, the temperature of steam press maintenance is 195 DEG C, pressure 1.0MPa, steam pressure
The time of maintenance is 6 hours, obtains air-entrained concrete building block.The volume of obtained air-entrained concrete building block is the body of third slurry
Long-pending 1.77 times.The compression strength of air-entrained concrete building block is 3.7MPa, dry density 615kg/m3。
The present embodiment is being stirred using steam heating dry material (alkaline residue, waste silicon powder and silicon mud that cement, lime mix)
It is passed through high-temperature steam heating slurry (70 DEG C -95 DEG C) when mixing casting, waste silicon powder is more fully reacted.Due to aerated blocks
Producing primary raw material is flyash, so founding the factory generally around power plant, and steam-cured link last in aerated blocks production needs
Wanting power plant to provide pressure is 1.2MPA, the high-temperature high-pressure steam that 185 DEG C of temperature.
It needs to heat in the step of preparation method of the present embodiment air-entrained concrete building block, be carried out by high-temperature water vapor
Heating, since air-entrained concrete building block production primary raw material is flyash, so founding the factory generally around power plant, power plant can be generated
Flyash, and power plant can provide vapor used in the heating of above-mentioned steps (1) and step (2) and the steaming in step (4)
Pressure maintenance vapor used.
Air-entrained concrete building block in the present embodiment can not only recycle corresponding waste silicon powder, turn waste into wealth, and
Also reduce the cost of air-entrained concrete building block.
Comparative example 1
The difference of this comparative example and embodiment 1 are as follows: preparing does not have lime in the composition of raw materials of air-entrained concrete building block, i.e. stone
Grey 0 mass parts.
The volume for the air-entrained concrete building block being prepared by the preparation method of air-entrained concrete building block is third slurry
1.1 times of volume, air-entrained concrete building block is not got angry completely.
Due to there is no lime persistently to provide internal heat early period, calcium hydroxide is caused to be not enough with material reflection of getting angry,
Gas forming amount is unable to reach requirement.Get angry in air-entrained concrete building block preparation process in the present invention and refer to completely: aerated blocks are mixed
Solidifying earth building blocks volume is at least 1.75 times or more of third slurry volume.
Comparative example 2
This comparative example provides a kind of air-entrained concrete building block, and the composition of raw materials for preparing air-entrained concrete building block includes: fine coal
Ash: 1480 mass parts；Gypsum: 58 mass parts；Water: 700 mass parts；Cement: 60 mass parts；Lime: 200 mass parts；Aluminium powder: 2
Mass parts；(the aerated blocks formula of the prior art).
The difference of this comparative example and embodiment 1 are as follows: preparing does not have alkaline scrap material in the composition of raw materials of air-entrained concrete building block,
200 mass parts of exothermic material lime (0.39 yuan/kg) in this comparative example；Do not have silicon powder (2 yuan/kg), material of getting angry in this comparative example
Material is aluminium powder (13.5 yuan/kg)；Be added in embodiment 12 mass parts of waterglass and polyethylene glycol (6 yuan/kg), PVA (10 yuan/
kg)；
For following table as unit of a moulding box air-entrained concrete building block, embodiment 1 and comparative example 2 carry out Cost comparisons.
Every moulding box air-entrained concrete building block in embodiment 1 relative to the air-entrained concrete building block saving in comparative example 2 at
This 46.43 yuan, every moulding box air-entrained concrete building block in comparative example 2 is higher by 33.7% in embodiment 1.
Embodiment 2
The present embodiment provides a kind of air-entrained concrete building blocks, and the composition of raw materials for preparing air-entrained concrete building block includes: fine coal
Grey 1600 mass parts, 140 mass parts of alkaline scrap material, 60 mass parts of lime, 50 mass parts of gypsum, 54 mass parts of cement, material of getting angry
Expect 2 mass parts, 2 mass parts of dispersing agent, 2 mass parts of foam stabilizer, 750 mass parts of water, the material of getting angry in the present embodiment is useless silicon
Powder and useless silicon mud.
In the present embodiment, the mass ratio of alkaline scrap material and lime is 7:3
In the present embodiment, alkaline scrap material is the carbide slag that electrit factory electrolytic aluminium generates.Carbide slag include: 80mas%~
Calcium hydroxide, the 5~10mas% water of 95mas%.
In the present embodiment, waste silicon powder is the waste silicon powder generated in metallic silicon production process, and the silicon mud that gives up is crystal silicon solar electricity
The useless silicon mud generated in silicon ingot and/or the silicon wafer cutting in pond.Waste silicon powder includes: 85mas%~90mas% elemental silicon, 3mas%
~5mas% fe, 1mas%~3mas% pure aluminum, 5mas%~10mas% silica, 1mas%~6mas% carbon；
Useless silicon mud includes: 75mas%~85mas% elemental silicon, 10mas%~20mas% silica.
In the present embodiment, fineness≤190 mesh of alkaline scrap material；Material of getting angry is collected into useless for silicon powder manufacturer cloth bag
The useless silicon mud of generation after silicon powder and polysilicon cutting, fineness≤400 mesh of waste silicon powder, silicone content >=85%；Useless silicon mud it is thin
Spend≤400 mesh, silicone content >=85%.
In the present embodiment, dispersing agent is waterglass, methyl anyl alcohol, polyethylene glycol (mass ratio 10:7:5)；Foam stabilizer is
Content 20mas%~35mas% ethylene oxide fatty alcohol ethereal solution.
The present embodiment also provides a kind of preparation method of above-mentioned air-entrained concrete building block, and preparation method is according to above-mentioned preparation
The composition of raw materials of air-entrained concrete building block carries out, comprising the following steps:
(1) 1600 mass parts flyash, 50 mass parts gypsum, 748 mass parts water are mixed, is stirred 1 hour, preparation first
Slurry is heated to 40 DEG C using steam jacket.
By caustic slag and lime ball mill grinding, fineness is controlled less than 190 mesh sieve margins 10%, by 54 mass parts water
The lime after alkaline scrap material, the grinding of 60 mass parts, 2 mass parts foam stabilizers after mud, the grinding of 140 mass parts are heated to 40 DEG C, add
Enter into the first slurry stirring 10 minutes, obtains the second slurry, be heated to 47 DEG C.Lime (calcium oxide) is reacted with water generates hydrogen-oxygen
SiClx releases heat.
First take 2 mass parts get angry material be added 2 mass parts water in be uniformly mixed, then by 2 mass parts dispersing agents be added carry out
It is stirred processing 5 minutes, is then added in the second slurry and obtains third slurry, is stirred, third slurry is heated, temperature increases
To 57 DEG C, heating time is 3 minutes, reaches pouring condition.Lime reacts the calcium hydroxide generated, the hydrogen in alkaline scrap material with water
Calcium oxide is reacted with material of getting angry (silicon in waste silicon powder and/or useless silicon mud) generates calcium metaaluminate, carries out reaction of getting angry.
(2) the third slurry after heating is poured into mold, mold is heated, be heated to 75 DEG C, heating time
It is 60 minutes, so that the third slurry in mold is quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, the temperature of steam press maintenance is 190 DEG C, pressure 1.2MPa, steam pressure
The time of maintenance is 8 hours, obtains air-entrained concrete building block.The volume of obtained air-entrained concrete building block is the body of third slurry
Long-pending 1.78 times.The intensity of air-entrained concrete building block is 4.0MPa, dry density 610kg/m3。
The present embodiment is being stirred using steam heating dry material (alkaline residue, waste silicon powder and silicon mud that cement, lime mix)
It is passed through high-temperature steam heating slurry (70 DEG C -95 DEG C) when mixing casting, waste silicon powder is more fully reacted.Due to aerated blocks
Producing primary raw material is flyash, so founding the factory generally around power plant, and steam-cured link last in aerated blocks production needs
Wanting power plant to provide pressure is 1.2MPA, the high-temperature high-pressure steam that 185 DEG C of temperature.
It needs to heat in the step of preparation method of the present embodiment air-entrained concrete building block, be carried out by high-temperature water vapor
Heating, since air-entrained concrete building block production primary raw material is flyash, so founding the factory generally around power plant, power plant can be generated
Flyash, and power plant can provide vapor used in the heating of above-mentioned steps (1) and step (2) and the steaming in step (4)
Pressure maintenance vapor used.
Air-entrained concrete building block in the present embodiment can not only recycle corresponding waste silicon powder and useless silicon mud, change give up into
Treasured, and also reduce the cost of air-entrained concrete building block.
Embodiment 3
The present embodiment provides a kind of air-entrained concrete building blocks, and the composition of raw materials for preparing air-entrained concrete building block includes: fine coal
Grey 1700 mass parts, 100 mass parts of alkaline scrap material, 100 mass parts of lime, 50 mass parts of gypsum, 60 mass parts of cement, material of getting angry
Expect 1.8 mass parts, 1 mass parts of dispersing agent, 2 mass parts of foam stabilizer, 800 mass parts of water, the material of getting angry in the present embodiment is useless
Silicon powder and useless silicon mud.
In the present embodiment, the mass ratio of alkaline scrap material and lime is 1:1.
In the present embodiment, alkaline scrap material is power plant and caustic slag and carbide slag that electrit factory electrolytic aluminium generates.Basic furnace
Slag includes: 70mas%~81mas% calcium hydroxide, 14mas%~29mas% aluminium hydroxide, 1mas%~8mas% titanium dioxide
Silicon；Carbide slag includes: the calcium hydroxide of 80mas%~95mas%, 5~10mas% water.
In the present embodiment, waste silicon powder is the waste silicon powder generated in metallic silicon production process, and the silicon mud that gives up is crystal silicon solar electricity
The useless silicon mud generated in silicon ingot and/or the silicon wafer cutting in pond.Waste silicon powder includes: 85mas%~90mas% elemental silicon, 3mas%
~5mas% fe, 1mas%~3mas% pure aluminum, 5mas%~10mas% silica, 1mas%~6mas% carbon；
Useless silicon mud includes: 75mas%~85mas% elemental silicon, 10mas%~20mas% silica.
In the present embodiment, fineness≤190 mesh of alkaline scrap material；It gets angry fineness≤400 mesh of material.
In the present embodiment, dispersing agent is polyacrylamide (mass ratio 9:1)；Foam stabilizer be content 10mas%~
Hydroxypropyl methyl cellulose (HPMC) solution of 25mas%.
The present embodiment also provides a kind of preparation method of above-mentioned air-entrained concrete building block, and preparation method is according to above-mentioned preparation
The composition of raw materials of air-entrained concrete building block carries out, comprising the following steps:
(1) 1700 mass parts flyash, 50 mass parts gypsum, 798 mass parts water are mixed, is stirred 1 hour, preparation first
Slurry is heated to 50 DEG C using steam jacket.
By caustic slag and lime ball mill grinding, fineness is controlled less than 190 mesh sieve margins 15%, by 60 mass parts water
The lime after alkaline scrap material, the grinding of 100 mass parts, 2 mass parts foam stabilizers after mud, the grinding of 100 mass parts are heated to 50 DEG C, add
Enter into the first slurry stirring 10 minutes, obtains the second slurry, be heated to 60 DEG C.Lime (calcium oxide) is reacted with water generates hydrogen-oxygen
SiClx releases heat.
By 2 mass parts dispersing agents, 2 mass parts get angry material, 2 mass parts water carry out mixed processing 5 minutes, be then added to
Third slurry is obtained in second slurry, is stirred, third slurry is heated, is heated to 70 DEG C, and heating time is 5 minutes, reaches and pours
Note condition.Lime reacted with water the calcium hydroxide generated, the calcium hydroxide in alkaline scrap material and material of getting angry (waste silicon powder and/or
Silicon in useless silicon mud) reaction generation calcium metaaluminate, carry out reaction of getting angry.
(2) the third slurry after heating is poured into mold, mold is heated, be heated to 80 DEG C, heating time
It is 100 minutes, so that the third slurry in mold is quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, the temperature of steam press maintenance is 200 DEG C, pressure 1.3MPa, steam pressure
The time of maintenance is 6 hours, obtains air-entrained concrete building block.The volume of obtained air-entrained concrete building block is the body of third slurry
Long-pending 1.8 times.The intensity of air-entrained concrete building block is 4.5MPa, dry density 600kg/m3。
Embodiment 4
The present embodiment provides a kind of air-entrained concrete building blocks, and the composition of raw materials for preparing air-entrained concrete building block includes: fine coal
Grey 1850 mass parts, 220 mass parts of lime, 100 mass parts of gypsum, 30 mass parts of cement, get angry 2.4 mass parts of material, water 730
Mass parts, the material of getting angry in the present embodiment is waste silicon powder and useless silicon mud.
In the present embodiment, the mass ratio of alkaline scrap material and lime is 1:10.
In the present embodiment, alkaline scrap material is power plant and caustic slag and carbide slag that electrit factory electrolytic aluminium generates.Basic furnace
Slag includes: 70mas%~81mas% calcium hydroxide, 14mas%~29mas% aluminium hydroxide, 1mas%~8mas% titanium dioxide
Silicon；Carbide slag includes: the calcium hydroxide of 80mas%~95mas%, 5~10mas% water.
In the present embodiment, waste silicon powder is the waste silicon powder generated in metallic silicon production process, and the silicon mud that gives up is crystal silicon solar electricity
The useless silicon mud generated in silicon ingot and/or the silicon wafer cutting in pond.Waste silicon powder includes: 85mas%~90mas% elemental silicon, 3mas%
~5mas% fe, 1mas%~3mas% pure aluminum, 5mas%~10mas% silica, 1mas%~6mas% carbon；
Useless silicon mud includes: 75mas%~85mas% elemental silicon, 10mas%~20mas% silica.
In the present embodiment, fineness≤190 mesh of alkaline scrap material；It gets angry fineness≤400 mesh of material.
In the present embodiment, dispersing agent is polyacrylamide (mass ratio 9:1)；Foam stabilizer be content 10mas%~
Hydroxypropyl methyl cellulose (HPMC) solution of 25mas%.
The present embodiment also provides a kind of preparation method of above-mentioned air-entrained concrete building block, and preparation method is according to above-mentioned preparation
The composition of raw materials of air-entrained concrete building block carries out, comprising the following steps:
(1) 1850 mass parts flyash, 100 mass parts gypsum, 728 mass parts water are mixed, is stirred 1 hour, preparation the
One slurry is heated to 48 DEG C using steam jacket.
Lime after 30 mass parts cement, the grinding of 220 mass parts is heated to 48 DEG C, is added in the first slurry and stirs 10
Minute, the second slurry is obtained, is heated to 56 DEG C.Lime (calcium oxide) is reacted with water generates silicon hydroxide, releases heat.
By 2.4 mass parts get angry material, 2 mass parts water carry out mixed processing 5 minutes, be then added in the second slurry
To third slurry, third slurry is heated in stirring, is heated to 64 DEG C, and heating time is 3 minutes, reaches pouring condition.Lime with
Water reacts the calcium hydroxide generated, the calcium hydroxide in alkaline scrap material and gets angry material (silicon in waste silicon powder and/or useless silicon mud)
Reaction generates calcium metaaluminate, carries out reaction of getting angry.
(2) the third slurry after heating is poured into mold, mold is heated, be heated to 70 DEG C, heating time
It is 110 minutes, so that the third slurry in mold is quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, the temperature of steam press maintenance is 185 DEG C, pressure 1.1MPa, steam pressure
The time of maintenance is 7 hours, obtains air-entrained concrete building block.The volume of obtained air-entrained concrete building block is the body of third slurry
Long-pending 1.7 times.The intensity of air-entrained concrete building block is 4.2MPa, dry density 550kg/m3。
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (13)
1. a kind of air-entrained concrete building block, which is characterized in that the composition of raw materials for preparing the air-entrained concrete building block includes: fine coal
Grey 1500~1850 mass parts, 0~200 mass parts of alkaline scrap material, 20~220 mass parts of lime, 50~100 mass parts of gypsum,
30~60 mass parts of cement, 1.8~2.4 mass parts of material of getting angry, 0~2 mass parts of dispersing agent, 0~2 mass parts of foam stabilizer, water
600~800 parts, the material of getting angry is waste silicon powder and/or useless silicon mud.
2. air-entrained concrete building block according to claim 1, which is characterized in that 1500~1850 mass parts of flyash, alkali
170~200 mass parts of property waste residue, 50~100 mass parts of gypsum, 30~60 mass parts of cement, are got angry at 20~50 mass parts of lime
1.8~2.4 mass parts of material, 0.3~1 mass parts of dispersing agent, 1~2 amount part of foam stabilizer, 600~800 parts of water.
3. air-entrained concrete building block according to claim 2, which is characterized in that the matter of the alkaline scrap material and the lime
Amount is than being (9:1)~(1:10).
4. air-entrained concrete building block according to any one of claims 1 to 3, which is characterized in that the alkaline scrap material is
The caustic slag and/or carbide slag that power plant and/or electrit factory electrolytic aluminium generate.
5. air-entrained concrete building block according to claim 4, which is characterized in that
The caustic slag includes: 70mas%~81mas% calcium hydroxide, 14mas%~29mas% aluminium hydroxide, 1mas%
~8mas% silica；
The carbide slag includes: the calcium hydroxide of 80mas%~95mas%, 5mas%~10mas% water.
6. air-entrained concrete building block according to any one of claims 1 to 3, which is characterized in that the waste silicon powder is gold
Belong to the waste silicon powder that generates in silicon production process, the useless silicon mud be crystal silicon solar batteries silicon ingot and/or silicon wafer cutting in produce
Raw useless silicon mud.
7. air-entrained concrete building block according to claim 6, which is characterized in that
The waste silicon powder includes: 85mas%~90mas% elemental silicon, 3mas%~5mas% fe, 1mas%~3mas%
Pure aluminum, 5mas%~10mas% silica, 1mas%~6mas% carbon；
The useless silicon mud includes: 75mas%~85mas% elemental silicon, 10mas%~20mas% silica.
8. air-entrained concrete building block according to any one of claims 1 to 3, which is characterized in that the alkaline scrap material
Fineness≤190 mesh；The fineness of the material of getting angry≤400 mesh.
9. air-entrained concrete building block according to any one of claims 1 to 3, which is characterized in that the dispersing agent is water
One of glass, polyethylene glycol, methyl anyl alcohol, cellulose derivative, polyacrylamide, fatty acid polyethylene glycol ester are several
Kind；
The foam stabilizer is the poly-vinyl alcohol solution of content 10mas%~30mas%, content 20mas%~35mas% epoxy second
One or more of alkane fatty alcohol ether solution, Gonak of content 10mas%~25mas%.
10. a kind of preparation method of air-entrained concrete building block described in any one of claim 1 to 9, which is characterized in that including
Following steps:
(1) flyash, gypsum, water are mixed with the heating of the first slurry, after cement, alkaline scrap material, lime, foam stabilizer heating
It is added in the first slurry and obtains the second slurry, it will treated that material of getting angry is added in the second slurry and obtains with dispersing agent
Three slurries reach pouring condition to the heating of third slurry；
(2) the third slurry after heating is poured into mold, mold is heated by resting room, so that in mold
Three slurries are quiet to stop paying out gas；
(3) it is quiet stop after, obtain green body, green body cut；
(4) green body after cutting is subjected to steam press maintenance, obtains air-entrained concrete building block.
11. the preparation method of air-entrained concrete building block according to claim 10, which is characterized in that
Third slurry is heated to 50~65 DEG C in the step (1), heating time is 3~5 minutes；
Mold is carried out in the step (2) to be heated to 70~80 DEG C, heating time is 60~120 minutes.
12. the preparation method of air-entrained concrete building block described in 0 or 11 according to claim 1, which is characterized in that the step
(1) in, the temperature of the second slurry is 5~10 DEG C higher than the temperature of the first slurry.
13. the preparation method of air-entrained concrete building block described in 0 or 11 according to claim 1, which is characterized in that the step
(1) in, the temperature of third slurry is 5~10 DEG C higher than the temperature of the second slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155826.5A CN109809754A (en) | 2017-11-20 | 2017-11-20 | Air-entrained concrete building block and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155826.5A CN109809754A (en) | 2017-11-20 | 2017-11-20 | Air-entrained concrete building block and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109809754A true CN109809754A (en) | 2019-05-28 |
Family
ID=66598964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711155826.5A Pending CN109809754A (en) | 2017-11-20 | 2017-11-20 | Air-entrained concrete building block and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109809754A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170706A (en) * | 2020-01-10 | 2020-05-19 | 刘小志 | Method for preparing autoclaved aerated concrete building blocks by using waste silicon sludge |
| CN111978099A (en) * | 2020-09-02 | 2020-11-24 | 济南大学 | Aerated concrete and preparation method thereof |
| CN115057648A (en) * | 2022-06-24 | 2022-09-16 | 浙大宁波理工学院 | Foaming agent for aerated concrete and aerated concrete |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193391A (en) * | 2014-08-22 | 2014-12-10 | 山东省环能设计院有限公司 | Aerated concrete and preparation method thereof |
| CN106380098A (en) * | 2015-07-27 | 2017-02-08 | 黄晨晨 | Aerated concrete gas-forming agent and aerated concrete |
-
2017
- 2017-11-20 CN CN201711155826.5A patent/CN109809754A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193391A (en) * | 2014-08-22 | 2014-12-10 | 山东省环能设计院有限公司 | Aerated concrete and preparation method thereof |
| CN106380098A (en) * | 2015-07-27 | 2017-02-08 | 黄晨晨 | Aerated concrete gas-forming agent and aerated concrete |
Non-Patent Citations (1)
| Title |
|---|
| 孔人英: "《混凝土制品工艺及设备》", 30 September 1995, 武汉工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170706A (en) * | 2020-01-10 | 2020-05-19 | 刘小志 | Method for preparing autoclaved aerated concrete building blocks by using waste silicon sludge |
| CN111978099A (en) * | 2020-09-02 | 2020-11-24 | 济南大学 | Aerated concrete and preparation method thereof |
| CN111978099B (en) * | 2020-09-02 | 2022-05-31 | 济南大学 | Aerated concrete and preparation method thereof |
| CN115057648A (en) * | 2022-06-24 | 2022-09-16 | 浙大宁波理工学院 | Foaming agent for aerated concrete and aerated concrete |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103449768A (en) | Aerated brick containing waste residues | |
| CN104557107A (en) | Light-weight autoclaved aerated concrete and preparation process thereof | |
| CN112125584B (en) | Preparation method of low-hydration-heat green self-leveling concrete | |
| CN110372281B (en) | High-strength low-shrinkage aerated concrete and preparation method thereof | |
| CN103553501B (en) | The preparation method of calcium-silicate thermal insulation material | |
| CN113620646B (en) | High-alumina fly ash self-insulation autoclaved aerated concrete block and preparation method thereof | |
| CN112794666A (en) | Iron tailing non-sintered ceramsite and preparation method thereof | |
| CN109809754A (en) | Air-entrained concrete building block and preparation method thereof | |
| CN113213787A (en) | Production process for preparing alkali cementing material from coal gangue | |
| CN115650624B (en) | Metal smelting waste residue derived material and preparation method and application thereof | |
| CN111978099B (en) | Aerated concrete and preparation method thereof | |
| CN110467368A (en) | A kind of activity excitant and preparation method thereof for inorganic solid waste building materials | |
| CN106630700A (en) | Inorganic gelling material made from coal ash and waste glass and preparation method of inorganic gelling material | |
| CN112010581A (en) | Calcium silicate hydrate nanocrystal core suspension and preparation method thereof | |
| CN113428887A (en) | Method for preparing alpha high-strength gypsum from industrial byproduct gypsum | |
| CN115028367A (en) | Method for preparing foam microcrystalline glass from secondary aluminum ash | |
| CN113880473A (en) | Preparation method of tungsten tailing based geopolymer | |
| CN111718141B (en) | Method for preparing artificial high-strength lightweight aggregate by crushing concrete slag powder | |
| CN103435307A (en) | Method for preparing low-density oil well cement briquettes by using hafnium carbide microbeads | |
| CN111170706A (en) | Method for preparing autoclaved aerated concrete building blocks by using waste silicon sludge | |
| CN115432982B (en) | Preparation method of aerated concrete | |
| CN114716193B (en) | Preparation method of recycled slag-soil brick | |
| CN107572999A (en) | A kind of low silicon tailings aerating steam-pressing brisk of flyash and its production method | |
| CN114890809A (en) | Steel slag-based high-carbon-fixation-quantity non-autoclaved aerated concrete and preparation method thereof | |
| CN103408264A (en) | Method for preparing low-density cement testing block for oil well cementation by using tantalum carbide microbeads |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200206 Address after: 831500 No. 2499, mianguang East Street, ganquanpu economic and Technological Development Zone (Industrial Park), Xinjiang high tech Industrial Development Zone (new urban area), Urumqi, Xinjiang Uygur Autonomous Region Applicant after: Xinjiang Xinte Xinneng Building Material Co.,Ltd. Address before: 830011, the Xinjiang Uygur Autonomous Region Urumqi national hi tech Industrial Development Zone (new urban area) Ganquan Fort High-tech Industrial Park Applicant before: XINTE ENERGY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |