CN108033761A - Light-weighted autoclaved brick of carbonization rice husk and preparation method thereof - Google Patents
Light-weighted autoclaved brick of carbonization rice husk and preparation method thereof Download PDFInfo
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- CN108033761A CN108033761A CN201711236027.0A CN201711236027A CN108033761A CN 108033761 A CN108033761 A CN 108033761A CN 201711236027 A CN201711236027 A CN 201711236027A CN 108033761 A CN108033761 A CN 108033761A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
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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
- C04B30/00—Compositions for artificial stone, not containing binders
-
- 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
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to light-weighted autoclaved brick of a kind of carbonization rice husk and preparation method thereof.The steam-pressing brisk is made of the component of following proportioning：10 15 parts by weight of carbonization rice husk, 10 15 parts by weight of dry carbide slag, 15 20 parts by weight of kerosene shale ash, 25 30 parts by weight of flyash, 25 30 parts by weight of quartz sand powder, 0.2 0.5 parts by weight of cellulose ether, 0.2 0.5 parts by weight of polyvinyl alcohol, 0.1 0.3 parts by weight of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.1 0.3 parts by weight.The preparation method of the steam-pressing brisk is realized by the component of said ratio.The present invention solves the problems, such as rice husk using difficulty, and the steam-pressing brisk of lightweight is produced using carbonization rice husk as pore-creating raw material, product is had the advantages that lightweight, environmental protection, energy saving, heat-and sound-insulating；And the present invention also has the characteristics that technical process is simple, raw material sources are wide, cost is low.
Description
Technical field
The invention belongs to using production of construction materials field, and relate more specifically to a kind of light-weighted autoclaved brick of carbonization rice husk and its
Preparation method.
Background technology
Rice husk is the byproduct of Rice producing, and rice husk accounts for 20% or so of paddy weight, and China produces paddy about 200,000,000 per year
Ton, is converted to about 40,000,000 tons of rice husk annual output.Rice husk is relatively low currently with rate, makes mainly as feed or mushroom culture medium
With consumption is relatively low, the characteristics of having high ash content (7%-9%) and high silica content (20% or so) due to rice husk, and has
Good toughness, porosity, low-density and the characteristics such as quality is coarse, therefore production is light in terms of rice husk being applied to building materials
The construction material of matter.
China's building brick is still based on fired brick at present, and fired brick is there are high energy consumption, and pollution is big, damage to land money
The shortcomings of source and gradually it is on the verge of being replaced, China is just wideling popularize the New Building Materials such as steam-pressing brisk at present, and steam-pressing brisk is to utilize powder
Coal ash, quick lime, gangue, mine tailings etc. are used as primary raw material, a kind of novel wall material manufactured without high-temperature calcination.
Evaporation brick has the advantages that to protect the fields, saves the energy and widelyd popularize, but there are density at the same time for common steam-pressing brisk
Greatly, the shortcomings of heat preservation and soundproof is poor, thus need to develop new light-weighted autoclaved brick.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of light-weighted autoclaved brick of carbonization rice husk and preparation method thereof, with carbon
Change the steam-pressing brisk that rice husk produces lightweight for pore-creating raw material, make product that there is lightweight, environmental protection, energy saving, heat-and sound-insulating；And
The present invention also has the characteristics that technical process is simple, raw material sources are wide, cost is low.
To achieve these goals, the present invention adopts the following technical scheme that：
According to an aspect of the present invention, there is provided a kind of light-weighted autoclaved brick of carbonization rice husk, the steam-pressing brisk by following proportioning group
It is grouped into：Carbonization rice husk 10-15 parts by weight, dry carbide slag 10-15 parts by weight, kerosene shale ash 15-20 parts by weight, flyash 25-
30 parts by weight, quartz sand powder 25-30 parts by weight, cellulose ether 0.2-0.5 parts by weight, polyvinyl alcohol 0.2-0.5 parts by weight, three second
Hydramine 0.1-0.3 parts by weight, ten sulfate dihydrate aluminium ammonium 0.1-0.3 parts by weight.
According to one embodiment of present invention, which is made of the component of following proportioning：10 parts by weight of carbonization rice husk,
10 parts by weight of dry carbide slag, 15 parts by weight of kerosene shale ash, 25 parts by weight of flyash, 25 parts by weight of quartz sand powder, cellulose ether 0.2
Parts by weight, 0.2 parts by weight of polyvinyl alcohol, 0.1 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.1 parts by weight.
According to one embodiment of present invention, which is made of the component of following proportioning：12 parts by weight of carbonization rice husk,
12 parts by weight of dry carbide slag, 17 parts by weight of kerosene shale ash, 27 parts by weight of flyash, 27 parts by weight of quartz sand powder, cellulose ether 0.3
Parts by weight, 0.4 parts by weight of polyvinyl alcohol, 0.2 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.2 parts by weight.
According to one embodiment of present invention, which is made of the component of following proportioning：14 parts by weight of carbonization rice husk,
14 parts by weight of dry carbide slag, 20 parts by weight of kerosene shale ash, 25 parts by weight of flyash, 28 parts by weight of quartz sand powder, cellulose ether 0.4
Parts by weight, 0.4 parts by weight of polyvinyl alcohol, 0.3 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.3 parts by weight.
According to one embodiment of present invention, which is made of the component of following proportioning：15 parts by weight of carbonization rice husk,
15 parts by weight of dry carbide slag, 20 parts by weight of kerosene shale ash, 30 parts by weight of flyash, 30 parts by weight of quartz sand powder, cellulose ether 0.5
Parts by weight, 0.5 parts by weight of polyvinyl alcohol, 0.3 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.3 parts by weight.
According to one embodiment of present invention, the chemical composition of carbonization rice husk includes SiO2；The chemical composition of dry carbide slag
Including Ca (OH)2And water；The chemical composition of kerosene shale ash includes SiO2、Al2O3And CaO；The chemical composition of flyash includes SiO2、
Al2O3、Fe2O3And CaO；The chemical composition of quartz sand powder includes SiO2。
According to one embodiment of present invention, SiO in carbonization rice husk2Content be not less than 60%.
According to one embodiment of present invention, Ca (OH) in dry carbide slag2Content be not less than 95%, moisture content is not more than
2%.
According to one embodiment of present invention, SiO in kerosene shale ash2Content be 55-75%, Al2O3Content be 20-
30%th, the content of CaO is not more than 5%.
According to one embodiment of present invention, SiO in flyash2Content be 40-60%, Al2O3Content be 20-
40%th, Fe2O3Content be 3-8%, CaO content be not more than 5%.
According to one embodiment of present invention, SiO in quartz sand powder2Content is not less than 90%.
According to one embodiment of present invention, the bulk density distribution of carbonization rice husk is 0.15-0.25g/cm3。
According to one embodiment of present invention, the granularity requirements of dry carbide slag, kerosene shale ash, flyash and quartz sand powder are equal
To pass through 100 mesh square hole screens completely.
According to one embodiment of present invention, obtained after dry carbide slag hydrolyzes for calcium carbide after drying and crushing；Kerosene shale ash
The lime-ash obtained for oil shale after burning, drying, broken, fine grinding gained；Flyash is power plant soot flying dust；Quartz sand powder
Obtained for quartz sand is finely ground.
According to another aspect of the present invention, there is provided a kind of preparation method of the light-weighted autoclaved brick of carbonization rice husk, including following step
Suddenly：
1) carbonization rice husk and kerosene shale ash are mixed evenly, then add water and continue to stir evenly to form slurry；
2) cellulose ether and ten sulfate dihydrate aluminium ammoniums are added in the slurry formed to step 1) and continue to stir evenly, then
It is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is crushed to obtain material B after drying；
3) dry carbide slag, flyash, quartz sand powder and triethanolamine are mixed evenly, then add water and continue to stir
It is formed uniformly slurry；
4) material B and polyvinyl alcohol that step 2) obtains are added in the slurry formed into step 3), and it is equal to continue stirring
It is even to obtain material C；
5) the material C that step 4) obtains is sent into brick-making mould and is pressed into adobe D；
6) the adobe D that step 5) obtains is sent into still kettle and carries out steam pressure, the steaming of finished product carbonization rice husk lightweight is prepared
Press brick.
According to one embodiment of present invention, the proportioning of the water added in step 1) is 20-30 parts by weight, is added in step 3)
The proportioning of the water entered is 30-40 parts by weight.
According to one embodiment of present invention, material A is crushed to granularity after drying and is obtained no more than 5mm in step 2)
Material B.
According to one embodiment of present invention, the pressure suppressed in step 5) is 3-5MPa.
According to one embodiment of present invention, the process of progress steam pressure is in feeding still kettle in step 6)：Still kettle by
2-5 hours to 190-220 DEG C of room temperature, then when constant temperature 6-10 is small at a temperature of 190-220 DEG C, and in constant temperature and pressure is
Steam press maintenance is carried out in 0.8-1.1MPa, still kettle cools down after treating steam press maintenance, when cooling 2-5 is small after to room temperature,
Go out kettle collecting packing.
By using above-mentioned technical proposal, the present invention has the following advantages that compared with the prior art：
The present invention solves the problems, such as rice husk using difficult, the steam pressure of production lightweight using carbonization rice husk as pore-creating raw material
Brick, makes product have the advantages that lightweight, environmental protection, energy saving, heat-and sound-insulating；And the present invention also has that technical process is simple, raw material
The characteristics of source is wide, cost is low.
Embodiment
It should be appreciated that shown the embodiment of the present invention is merely illustrative in the exemplary embodiment.Although in this hair
Only a small number of embodiments are described in detail in bright, but those skilled in the art are readily appreciated that and depart from the present invention in not essence
In the case of the teaching of theme, a variety of modifications are feasible.Correspondingly, all such modifications should all be included in the present invention's
In the range of.Without departing from the spirit of the invention, design, operating condition and ginseng that can be to following exemplary embodiment
Number etc. makes others and replaces, changes, changes and delete.
The present invention provides a kind of light-weighted autoclaved brick of carbonization rice husk, which is made of the component of following proportioning：Be carbonized rice
Shell 10-15 parts by weight, dry carbide slag 10-15 parts by weight, kerosene shale ash 15-20 parts by weight, flyash 25-30 parts by weight, quartz
Emery dust 25-30 parts by weight, cellulose ether 0.2-0.5 parts by weight, polyvinyl alcohol 0.2-0.5 parts by weight, triethanolamine 0.1-0.3 weights
Measure part, ten sulfate dihydrate aluminium ammonium 0.1-0.3 parts by weight.
In the present invention, carbonization rice husk chemical composition is with SiO2Based on, SiO2>=60%, bulk density distribution is
0.15-0.25g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2≥
95%, moisture content is less than or equal to 2%, and granularity requirements are to pass through 100 mesh square hole screens completely；Kerosene shale ash is oil shale after burning
Obtained lime-ash, drying, broken, fine grinding gained, chemical composition requirement is SiO255-75%, Al2O320-30%, CaO≤
5%, granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, and main component requirement is SiO2 40-
60%th, Al2O320-40%, Fe2O33-8%, CaO≤5%, granularity requirements are to pass through 100 mesh square hole screens completely；Quartz sand powder
Obtained for quartz sand is finely ground, main component requirement is SiO2>=90%, granularity requirements are to pass through 100 mesh square hole screens completely.
In the present invention, carbonization rice husk is that rice husk heats products therefrom in the case where completely cutting off oxygen environment, its is loose porous, density compared with
Mineral are low, can play the role of reducing steam-pressing brisk density, while SiO in carbonization rice husk2Content is higher, generally 60% with
On, steam-pressing brisk siliceous raw material can be used as；Carbide slag is the solid slag that calcium carbide hydrolysis produces, and main component is Ca (OH)2, as
Calcium additive in steam-pressing brisk；Kerosene shale ash is the lime-ash that oil shale boiling furnace combustion obtains, its particle is thinner, and activity is good,
Main component SiO2And Al2O3, the siliceous and aluminum source as steam-pressing brisk；Flyash comes as the siliceous and aluminum of steam-pressing brisk
Source；Sources of silica of the quartz sand powder as steam-pressing brisk；Steam pressure technique for raw material autoclave curing effect under, CaO, SiO2With
H2O and CaO, Al2O3And H2O, which reacts, generates hydrated calcium silicate and drated calcium aluminate, forms the network of high intensity,
So as to form the intensity of steam-pressing brisk.
In the present invention, carbonization rice husk is heated to 500-600 DEG C for rice husk under oxygen-free environment, keeps the temperature 30-60min systems
.The purpose of technique is the organic matter removed in rice husk, contains 15% or so SiO in rice husk2, the SiO in rice husk2Reticulate
Structure distribution wherein, plays skeleton, lignin and cellulose filling are within a grid.Lignin and fibre are destroyed after carbonization
Dimension element, so that netted SiO2It is exposed, enables to participate in reaction, while surface composition, chamber surface are destroyed after being carbonized
It is coarse, strengthen the activity of rice husk.
In addition, the present invention also provides a kind of preparation method of the light-weighted autoclaved brick of carbonization rice husk, step is：
(1) take carbonization rice husk and kerosene shale ash to be stirred and evenly mixed by formula, add the water of 20-30 parts by weight, stir into uniformly
Slurry；
(2) add cellulose ether into the slurry of step (1) and ten sulfate dihydrate aluminium ammoniums continue to stir evenly, slurry is sent
Enter and unnecessary water is filtered out on suction filtration machine, obtain material A, material A is crushed after drying, is crushed to granularity≤5mm, is obtained
To material B；
(3) dry carbide slag powder, flyash, quartz sand powder and triethanolamine are stirred and evenly mixed by formula, adds 30-40 weight
The water of part, stirs into uniform slurry；
(4) add material B into the slurry of step (3) and polyvinyl alcohol is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 3-5MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
In the present invention, cellulose ether plays the role of binding agent in step (2), and ten sulfate dihydrate aluminium ammoniums are flocculant energy
Enough increase the connectivity between particle.
In the present invention, polyvinyl alcohol acts on for binding agent in step (4), and various composition is fixed and is molded.
In the present invention, the technological parameter of steam pressure process is in step (6)：Still kettle by room temperature 2-5 hours extremely
190-220 DEG C, when constant temperature 6-10 is small at a temperature of this is 190-220 DEG C, constant temperature and pressure is to carry out steam press maintenance in 0.8-1.1MPa,
Steam press maintenance terminates still kettle and cools down, cooling 2-5 it is small when after to room temperature, go out kettle collecting packing.
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of light-weighted autoclaved brick of carbonization rice husk, is made of the component of following proportioning：10 parts by weight of carbonization rice husk, dry carbide slag
10 parts by weight, 15 parts by weight of kerosene shale ash, 25 parts by weight of flyash, 25 parts by weight of quartz sand powder, 0.2 parts by weight of cellulose ether,
0.2 parts by weight of polyvinyl alcohol, 0.1 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.1 parts by weight.
In said components, carbonization rice husk chemical composition is with SiO2Based on, SiO2Content is 60%, bulk density distribution model
Enclose for 0.15g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2Content
For 96%, moisture content 2%, granularity requirements is pass through 100 mesh square hole screens completely；Kerosene shale ash obtains for oil shale after burning
Lime-ash, obtained by drying, broken, fine grinding, chemical composition requirement is SiO2Content for 55%, Al2O3Content be 20%,
CaO content is 5%, and granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, and main component requires
For SiO2Content for 40%, Al2O3Content for 20%, Fe2O3Content be 3%, CaO content 5%, granularity requirements have been
Full by 100 mesh square hole screens；Quartz sand powder obtains for quartz sand is finely ground, and main component requirement is SiO2Content be 90%,
Granularity requirements are to pass through 100 mesh square hole screens completely.
The step of preparation method of the above-mentioned light-weighted autoclaved brick of carbonization rice husk is：
(1) kerosene shale ash of the carbonization rice husk of 10 parts by weight and 15 parts by weight is stirred and evenly mixed, adds the water of 20 parts by weight,
Stir into uniform slurry；
(2) sodium carboxymethylcellulose of 0.2 parts by weight and the Shi Ershui of 0.1 parts by weight are added into the slurry of step (1)
Alum continues to stir evenly, and then slurry is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is passed through
Crushed after drying, be crushed to granularity≤5mm, obtain material B；
(3) by the dry carbide slag powder of 10 parts by weight, the flyash of 25 parts by weight, 25 parts by weight quartz sand powder and 0.1 weight
Mixing is mixed in the triethanolamine for measuring part, adds the water of 30 parts by weight, stirs into uniform slurry；
(4) material B is added into the slurry of step (3) and the polyvinyl alcohol of 0.2 parts by weight is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 3MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
Wherein the technological parameter of steam pressure process is in above-mentioned steps (6)：Still kettle by room temperature 2 hours to 190 DEG C,
When constant temperature 6 is small at a temperature of 190 DEG C, constant temperature and pressure is to carry out steam press maintenance in 0.8MPa, and steam press maintenance terminates still kettle and dropped
Temperature, cooling 2 it is small when after to room temperature, go out kettle collecting packing.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk obtained using this technique is as shown in table 1.As shown in Table 1,
Using the flexural strength for the light-weighted autoclaved brick of finished product carbonization rice husk that above-mentioned technical proposal obtains, compression strength is for 5.2MPa
18.9MPa meet《Autoclaved lime-sand brick》(GB11945-1999) the intensity index requirement of MU15 Grade As.
Embodiment 2
A kind of light-weighted autoclaved brick of carbonization rice husk, is made of the component of following proportioning：12 parts by weight of carbonization rice husk, dry carbide slag
12 parts by weight, 17 parts by weight of kerosene shale ash, 27 parts by weight of flyash, 27 parts by weight of quartz sand powder, 0.3 parts by weight of cellulose ether,
0.4 parts by weight of polyvinyl alcohol, 0.2 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.2 parts by weight.
In said components, carbonization rice husk chemical composition is with SiO2Based on, SiO2Content is 80%, bulk density distribution model
Enclose for 0.20g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2Content
For 95%, moisture content 1%, granularity requirements is pass through 100 mesh square hole screens completely；Kerosene shale ash obtains for oil shale after burning
Lime-ash, obtained by drying, broken, fine grinding, chemical composition requirement is SiO2Content for 60%, Al2O3Content be 25%,
CaO content is 4%, and granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, and main component requires
For SiO2Content for 50%, Al2O3Content for 30%, Fe2O3Content be 6%, CaO content 3%, granularity requirements have been
Full by 100 mesh square hole screens；Quartz sand powder obtains for quartz sand is finely ground, and main component requirement is SiO2Content be 95%,
Granularity requirements are to pass through 100 mesh square hole screens completely.
The step of preparation method of the above-mentioned light-weighted autoclaved brick of carbonization rice husk is：
(1) kerosene shale ash of the carbonization rice husk of 12 parts by weight and 17 parts by weight is stirred and evenly mixed, adds the water of 25 parts by weight,
Stir into uniform slurry；
(2) sodium carboxymethylcellulose of 0.3 parts by weight and the Shi Ershui of 0.2 parts by weight are added into the slurry of step (1)
Alum continues to stir evenly, and then slurry is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is passed through
Crushed after drying, be crushed to granularity≤5mm, obtain material B；
(3) by the dry carbide slag powder of 12 parts by weight, the flyash of 27 parts by weight, 27 parts by weight quartz sand powder and 0.2 weight
Mixing is mixed in the triethanolamine for measuring part, adds the water of 35 parts by weight, stirs into uniform slurry；
(4) material B is added into the slurry of step (3) and the polyvinyl alcohol of 0.4 parts by weight is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 4MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
Wherein the technological parameter of steam pressure process is in above-mentioned steps (6)：Still kettle by room temperature 3 hours to 200 DEG C,
When constant temperature 8 is small at a temperature of 200 DEG C, constant temperature and pressure is to carry out steam press maintenance in 1.0MPa, and steam press maintenance terminates still kettle and dropped
Temperature, cooling 3 it is small when after to room temperature, go out kettle collecting packing.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk obtained using this technique is as shown in table 1.As shown in Table 1,
Using the flexural strength for the light-weighted autoclaved brick of finished product carbonization rice husk that above-mentioned technical proposal obtains, compression strength is for 5.5MPa
19.5MPa meet《Autoclaved lime-sand brick》(GB11945-1999) the intensity index requirement of MU15 Grade As.
Embodiment 3
A kind of light-weighted autoclaved brick of carbonization rice husk, is made of the component of following proportioning：14 parts by weight of carbonization rice husk, dry carbide slag
14 parts by weight, 20 parts by weight of kerosene shale ash, 25 parts by weight of flyash, 28 parts by weight of quartz sand powder, 0.4 parts by weight of cellulose ether,
0.4 parts by weight of polyvinyl alcohol, 0.3 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.3 parts by weight.
In said components, carbonization rice husk chemical composition is with SiO2Based on, SiO2Content is 90%, bulk density distribution model
Enclose for 0.25g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2Content
For 98%, moisture content 1%, granularity requirements is pass through 100 mesh square hole screens completely；Kerosene shale ash obtains for oil shale after burning
Lime-ash, obtained by drying, broken, fine grinding, chemical composition requirement is SiO2Content for 75%, Al2O3Content be 20%,
CaO content is 4%, and granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, and main component requires
For SiO2Content for 60%, Al2O3Content for 30%, Fe2O3Content be 5%, CaO content 3%, granularity requirements have been
Full by 100 mesh square hole screens；Quartz sand powder obtains for quartz sand is finely ground, and main component requirement is SiO2Content be 96%,
Granularity requirements are to pass through 100 mesh square hole screens completely.
The step of preparation method of the above-mentioned light-weighted autoclaved brick of carbonization rice husk is：
(1) kerosene shale ash of the carbonization rice husk of 14 parts by weight and 20 parts by weight is stirred and evenly mixed, adds the water of 28 parts by weight,
Stir into uniform slurry；
(2) sodium carboxymethylcellulose of 0.4 parts by weight and the Shi Ershui of 0.3 parts by weight are added into the slurry of step (1)
Alum continues to stir evenly, and then slurry is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is passed through
Crushed after drying, be crushed to granularity≤5mm, obtain material B；
(3) by the dry carbide slag powder of 14 parts by weight, the flyash of 25 parts by weight, 28 parts by weight quartz sand powder and 0.3 weight
Mixing is mixed in the triethanolamine for measuring part, adds the water of 36 parts by weight, stirs into uniform slurry；
(4) material B is added into the slurry of step (3) and the polyvinyl alcohol of 0.4 parts by weight is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 4MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
Wherein the technological parameter of steam pressure process is in above-mentioned steps (6)：Still kettle by room temperature 4 hours to 210 DEG C,
When constant temperature 8 is small at a temperature of 210 DEG C, constant temperature and pressure is to carry out steam press maintenance in 1.0MPa, and steam press maintenance terminates still kettle and dropped
Temperature, cooling 3 it is small when after to room temperature, go out kettle collecting packing.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk obtained using this technique is as shown in table 1.As shown in Table 1,
Using the flexural strength for the light-weighted autoclaved brick of finished product carbonization rice husk that above-mentioned technical proposal obtains, compression strength is for 5.8MPa
19.6MPa meet《Autoclaved lime-sand brick》(GB11945-1999) the intensity index requirement of MU15 Grade As.
Embodiment 4
A kind of light-weighted autoclaved brick of carbonization rice husk, is made of the component of following proportioning：10 parts by weight of carbonization rice husk, dry carbide slag
12 parts by weight, 16 parts by weight of kerosene shale ash, 25 parts by weight of flyash, 30 parts by weight of quartz sand powder, 0.5 parts by weight of cellulose ether,
0.2 parts by weight of polyvinyl alcohol, 0.2 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.2 parts by weight.
In said components, carbonization rice husk chemical composition is with SiO2Based on, SiO2Content is 75%, bulk density distribution model
Enclose for 0.22g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2Content
For 98%, moisture content 2%, granularity requirements is pass through 100 mesh square hole screens completely；Kerosene shale ash obtains for oil shale after burning
Lime-ash, obtained by drying, broken, fine grinding, chemical composition requirement is SiO2Content for 65%, Al2O3Content be 30%,
CaO content is 3%, and granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, and main component requires
For SiO2Content for 55%, Al2O3Content for 25%, Fe2O3Content be 8%, CaO content 5%, granularity requirements have been
Full by 100 mesh square hole screens；Quartz sand powder obtains for quartz sand is finely ground, and main component requirement is SiO2Content be 92%,
Granularity requirements are to pass through 100 mesh square hole screens completely.
The step of preparation method of the above-mentioned light-weighted autoclaved brick of carbonization rice husk is：
(1) kerosene shale ash of the carbonization rice husk of 10 parts by weight and 16 parts by weight is stirred and evenly mixed, adds the water of 25 parts by weight,
Stir into uniform slurry；
(2) sodium carboxymethylcellulose of 0.5 parts by weight and the Shi Ershui of 0.2 parts by weight are added into the slurry of step (1)
Alum continues to stir evenly, and then slurry is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is passed through
Crushed after drying, be crushed to granularity≤5mm, obtain material B；
(3) by the dry carbide slag powder of 12 parts by weight, the flyash of 25 parts by weight, 30 parts by weight quartz sand powder and 0.2 weight
Mixing is mixed in the triethanolamine for measuring part, adds the water of 30 parts by weight, stirs into uniform slurry；
(4) material B is added into the slurry of step (3) and the polyvinyl alcohol of 0.2 parts by weight is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 3MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
Wherein the technological parameter of steam pressure process is in above-mentioned steps (6)：Still kettle by room temperature 3 hours to 195 DEG C,
When constant temperature 7 is small at a temperature of 195 DEG C, constant temperature and pressure is to carry out steam press maintenance in 0.9MPa, and steam press maintenance terminates still kettle and dropped
Temperature, cooling 2.5 it is small when after to room temperature, go out kettle collecting packing.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk obtained using this technique is as shown in table 1.As shown in Table 1,
Using the flexural strength for the light-weighted autoclaved brick of finished product carbonization rice husk that above-mentioned technical proposal obtains, compression strength is for 5.6MPa
19.2MPa meet《Autoclaved lime-sand brick》(GB11945-1999) the intensity index requirement of MU15 Grade As.
Embodiment 5
A kind of light-weighted autoclaved brick of carbonization rice husk, is made of the component of following proportioning：15 parts by weight of carbonization rice husk, dry carbide slag
15 parts by weight, 20 parts by weight of kerosene shale ash, 30 parts by weight of flyash, 30 parts by weight of quartz sand powder, 0.5 parts by weight of cellulose ether,
0.5 parts by weight of polyvinyl alcohol, 0.3 amount part of triethanolamine, ten sulfate dihydrate aluminium ammoniums, 0.3 parts by weight.
In said components, carbonization rice husk chemical composition is with SiO2Based on, SiO2Content is 70%, bulk density distribution model
Enclose for 0.25g/cm3；For dry carbide slag to be obtained after calcium carbide hydrolysis after drying and crushing, chemical composition requirement is Ca (OH)2Content
For 96%, moisture content 1.5%, granularity requirements is pass through 100 mesh square hole screens completely；Kerosene shale ash obtains for oil shale after burning
The lime-ash arrived, drying, broken, fine grinding gained, chemical composition requirement is SiO2Content for 70%, Al2O3Content be
20%, CaO content 5%, granularity requirements are to pass through 100 mesh square hole screens completely；Flyash is power plant soot flying dust, main component
It is required that it is SiO2Content for 60%, Al2O3Content for 20%, Fe2O3Content be 6%, CaO content 5%, granularity requirements
To pass through 100 mesh square hole screens completely；Quartz sand powder obtains for quartz sand is finely ground, and main component requirement is SiO2Content be
95%, granularity requirements are to pass through 100 mesh square hole screens completely.
The step of preparation method of the above-mentioned light-weighted autoclaved brick of carbonization rice husk is：
(1) kerosene shale ash of the carbonization rice husk of 15 parts by weight and 20 parts by weight is stirred and evenly mixed, adds the water of 30 parts by weight,
Stir into uniform slurry；
(2) sodium carboxymethylcellulose of 0.5 parts by weight and the Shi Ershui of 0.3 parts by weight are added into the slurry of step (1)
Alum continues to stir evenly, and then slurry is sent on suction filtration machine and filters out unnecessary water, obtains material A, material A is passed through
Crushed after drying, be crushed to granularity≤5mm, obtain material B；
(3) by the dry carbide slag powder of 15 parts by weight, the flyash of 30 parts by weight, 30 parts by weight quartz sand powder and 0.3 weight
Mixing is mixed in the triethanolamine for measuring part, adds the water of 40 parts by weight, stirs into uniform slurry；
(4) material B is added into the slurry of step (3) and the polyvinyl alcohol of 0.5 parts by weight is uniformly mixing to obtain material C；
(5) material C is sent into brick-making mould, adobe D is pressed into the case where pressure is 5MPa；
(6) manufactured adobe D is sent into still kettle and carries out the light-weighted autoclaved brick of steam pressure finished product carbonization rice husk.
Wherein the technological parameter of steam pressure process is in above-mentioned steps (6)：Still kettle by room temperature 5 hours to 220 DEG C,
When constant temperature 10 is small at a temperature of 220 DEG C, constant temperature and pressure is to carry out steam press maintenance in 1.1MPa, and steam press maintenance terminates still kettle and dropped
Temperature, cooling 5 it is small when after to room temperature, go out kettle collecting packing.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk obtained using this technique is as shown in table 1.As shown in Table 1,
Using the flexural strength for the light-weighted autoclaved brick of finished product carbonization rice husk that above-mentioned technical proposal obtains, compression strength is for 6.0MPa
20.0MPa meet《Autoclaved lime-sand brick》(GB11945-1999) the intensity index requirement of MU15 Grade As.
The testing result of the light-weighted autoclaved brick of finished product carbonization rice husk is prepared in the different embodiments of table 1
| Sequence number | Flexural strength (MPa) | Compression strength (MPa) | (GB11945-1999) MU15 intensity indexs |
| Embodiment 1 | 5.2 | 18.9 | Meet Grade A |
| Embodiment 2 | 5.5 | 19.5 | Meet Grade A |
| Embodiment 3 | 5.8 | 19.6 | Meet Grade A |
| Embodiment 4 | 5.6 | 19.2 | Meet Grade A |
| Embodiment 5 | 6.0 | 20.0 | Meet Grade A |
The foregoing is merely presently preferred embodiments of the present invention, is not used for limiting practical range of the invention；If do not take off
From the spirit and scope of the present invention, to technical scheme is modified or replaced equivalently of the present invention, should all cover in the claims in the present invention
Among protection domain.
Claims (10)
1. a kind of light-weighted autoclaved brick of carbonization rice husk, it is characterised in that be made of the component of following proportioning：Carbonization rice husk 10-15 weights
Measure part, dry carbide slag 10-15 parts by weight, kerosene shale ash 15-20 parts by weight, flyash 25-30 parts by weight, quartz sand powder 25-30
Parts by weight, cellulose ether 0.2-0.5 parts by weight, polyvinyl alcohol 0.2-0.5 parts by weight, triethanolamine 0.1-0.3 parts by weight, 12
Water alum 0.1-0.3 parts by weight.
2. the light-weighted autoclaved brick of carbonization rice husk according to claim 1, it is characterised in that SiO in the carbonization rice husk2Contain
Amount is not less than 60%.
3. the light-weighted autoclaved brick of carbonization rice husk according to claim 1, it is characterised in that Ca (OH) in the dry carbide slag2's
Content is not less than 95%, and moisture content is not more than 2%.
4. the light-weighted autoclaved brick of carbonization rice husk according to claim 1, it is characterised in that SiO in the kerosene shale ash2Contain
Measure as 55-75%, Al2O3Content be 20-30%, CaO content be not more than 5%.
5. the light-weighted autoclaved brick of carbonization rice husk according to claim 1, it is characterised in that SiO in the flyash2Content
For 40-60%, Al2O3Content be 20-40%, Fe2O3Content be 3-8%, CaO content be not more than 5%.
6. the light-weighted autoclaved brick of carbonization rice husk according to claim 1, it is characterised in that SiO in the quartz sand powder2Content
Not less than 90%.
A kind of 7. preparation method of the light-weighted autoclaved brick of carbonization rice husk as any one of claim 1-6, it is characterised in that
Comprise the following steps：
1) carbonization rice husk and kerosene shale ash are mixed evenly by said ratio, then add water and continue to stir evenly to form material
Slurry；
2) cellulose ether and ten sulfate dihydrate aluminium ammoniums and to continue stirring equal of said ratio are added in the slurry formed to step 1)
It is even, it is then fed on suction filtration machine and filters out unnecessary water, obtain material A, material A is crushed to obtain material B after drying；
3) dry carbide slag, flyash, quartz sand powder and triethanolamine are mixed by said ratio, stirs evenly, then add water
Continue to stir evenly to form slurry；
4) material B and polyvinyl alcohol that step 2) obtains are added in the slurry formed into step 3), and continues to stir evenly
To material C；
5) the material C that step 4) obtains is sent into brick-making mould and is pressed into adobe D；
6) the adobe D that step 5) obtains is sent into still kettle and carries out steam pressure, the light-weighted autoclaved brick of finished product carbonization rice husk is prepared.
8. the method according to the description of claim 7 is characterized in that the proportioning of the water added in the step 1) is 20-30 weights
Part is measured, the proportioning of the water added in the step 3) is 30-40 parts by weight.
9. the method according to the description of claim 7 is characterized in that the pressure suppressed in the step 5) is 3-5MPa.
10. carry out steam pressure the method according to the description of claim 7 is characterized in that being sent into the step 6) in still kettle
Process is：Still kettle is by 2-5 hours to 190-220 DEG C of room temperature, then when constant temperature 6-10 is small at a temperature of 190-220 DEG C,
And steam press maintenance is carried out in constant temperature and pressure is 0.8-1.1MPa, still kettle cools down after treating steam press maintenance, and cool down 2-5
To room temperature after hour, go out kettle collecting packing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747685A (en) * | 2020-07-10 | 2020-10-09 | 上海佳砼新材料科技发展有限公司 | Environment-friendly odorless asphalt mixture and preparation method thereof |
| CN111908939A (en) * | 2020-06-23 | 2020-11-10 | 上海暖丰保温材料有限公司 | Aerated concrete block and preparation method thereof |
-
2017
- 2017-11-30 CN CN201711236027.0A patent/CN108033761A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908939A (en) * | 2020-06-23 | 2020-11-10 | 上海暖丰保温材料有限公司 | Aerated concrete block and preparation method thereof |
| CN111747685A (en) * | 2020-07-10 | 2020-10-09 | 上海佳砼新材料科技发展有限公司 | Environment-friendly odorless asphalt mixture and preparation method thereof |
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