CN106631122A - Sintered fly ash-expanded perlite water-permeable brick and preparation method thereof - Google Patents
Sintered fly ash-expanded perlite water-permeable brick and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a sintered fly ash-expanded perlite water-permeable brick and a preparation method thereof. With high-carbon content fly ash, clay, silica powder, bauxite and expanded perlite as raw materials, the sintered fly ash-expanded perlite water-permeable brick is sintered by the following formula: 30 to 50 percent of the high-carbon content fly ash, 50 to 70 percent of the clay, 0 to 5 percent of the silica powder, 0 to 5 percent of the bauxite, and 50 to 120 percent of the expanded perlite; in the formula, the high-carbon content fly ash, the clay, the silica powder and the bauxite are in percentage by mass, and the total mass of the four types of raw materials is 100 percent; and the expanded perlite is in percentage by volume, i.e. the percentage by volume of the expanded perlite in the volume of a mixture of the high-carbon content fly ash, the clay, the silica powder and the bauxite. The water-permeable brick prepared by the invention has the advantages of good water permeability, high strength, environment-friendliness and energy saving, and is applicable to water-permeable paved structures and pavements of sidewalks, communities, squares, parking lots and the like.
Description
Technical field
The invention belongs to permeable pavement Material Field, specially a kind of sintered coal ash expanded perlite water-permeable brick and its system
Preparation Method.The sintered coal ash expanded perlite water-permeable brick prepared by the method is applied to pavement, square, cell road etc. to be needed
Want permeable paving structure and road surface.
Background technology
Permeable pavement structure and road surface have alleviates urban waterlogging, adjusts the function of city water resource and the ecosystem,
It is the important component part of " sponge city " construction.Water-permeable brick as permeable pavement structure component units, its water penetration come
Come from the water-permeable passage of hole that brick body included and its formation.The porosity of water-permeable brick is higher, and water-permeable passage is abundanter, permeable
Performance is better.
Industrial solid castoff flyash is widely used in cement admixture, concrete admixture, fired fly ash brick.
But for high carbon content flyash（The flyash of loss on ignition >=15%）Because phosphorus content is high, loss on ignition is big, it is impossible to directly apply
In cement and concrete.Additionally, high carbon content flyash is applied to ordinary sinter flyash brick, cause sintering time elongated, burn
Knot is difficult, and evil mind occurs in brick body, and the problems such as intensity is too low, this limits to a certain extent the resource of high carbon content flyash
Utilization ratio.
But, from terms of the production angle of water-permeable brick, contained carbon can not only be used as fuel in high carbon content flyash
There is provided outside a part of heat, additionally it is possible to provide abundant pore structure for water-permeable brick.At high temperature combustion oxidation produces CO to carbon2
And CO, wrap up with effusion of these gases in high-temperature sintering process or by the liquid phase produced in high-temperature sintering process,
Substantial amounts of hole and bubble are formed in sintered article.Therefore, carbon contained in high carbon content flyash or a kind of natural
High-temperature foaming agent, and carbon content is higher, and the porosity of sintered article is higher.Therefore, it is raw material using high carbon content flyash
Water-permeable brick is made, can lack can make permeable tile product have certain water suction, water conservation and permeable with or without applied foam agent
Property, while can also reduce the production cost of water-permeable brick.
But, high-temperature foaming agent is done using the carbon in high carbon content flyash, due to the liquid produced in adobe sintering process
Phase wrapping portion gas, causes this part holes closing and cannot be in communication with the outside, and affects water-permeable brick water permeability.Expanded pearlite
Rock is the granular porous material of a kind of glassy white made by after perlite ore high-temperature roasting expansion, in relatively low sintering temperature
Under there is melting and generate liquid phase, and leave hole in its position.Therefore, expanded perlite can be used as the pore-creating of water-permeable brick
Agent, and adjust water-permeable brick pore structure by changing its particle size and level matching somebody with somebody, with this porosity of water-permeable brick and logical is increased
Hole number.Further, since the main chemical compositions of expanded perlite are SiO2、Al2O3, so which increases the burning of water-permeable brick
Knotting strength.
In order to promote to add the expanded perlite in water-permeable brick that optimal pore-creating is fully melted and obtained in sintering procedure
Effect, by high carbon content flyash expanded perlite surface is wrapped in, in roasting process in high carbon content flyash carbon burning
A big chunk heat, the fusing of accelerated expansion perlite, the effect with flux can be provided.Simultaneously because liquid phase in brick body
Increase the intensity that can further improve water-permeable brick.
Patent application《The method for producing sintering brick permeable to water using municipal sludge and wet-discharged coal ash》（Application number
200810106946.0）Disclose a kind of method that utilization municipal sludge and wet-discharged coal ash produce sintering brick permeable to water.The patent
Application employs more organic matter pore creating material, such as rice husk, rice chaff, sawdust, spent pulping liquor, beer residue, in sintering process
Organic material can discharge a large amount of flue gases, pollute environment.
The content of the invention
It is an object of the present invention to provide a kind of sintered coal ash expanded perlite water-permeable brick and preparation method thereof, the method is abundant
By the use of the carbon in high carbon content flyash as high-temperature foaming agent, the flux of expanded perlite and fuel function so that should
Water-permeable brick has that water permeability is good, intensity is high, energy-conserving and environment-protective outstanding features.
The present invention is achieved through the following technical solutions：
A kind of sintered coal ash expanded perlite water-permeable brick, it is precious with high carbon content flyash, clay, silicon powder, bauxite, expansion
Zhu Yan is raw material, fires by formula as below and forms：
High carbon content flyash 30% ~ 50%,
Clay 50% ~ 70%,
Silicon powder 0 ~ 5%,
Bauxite 0 ~ 5%；
Expanded perlite 50% ~ 120%；
In above-mentioned formula, the high carbon content flyash, clay, silicon powder, bauxite be mass percent, four kinds of material qualities
Add up to 100%；
The expanded perlite for percent by volume, i.e. expanded perlite volume account for high carbon content flyash, clay, silicon powder,
The percentage of bauxite mixture volume.
Wherein, the high carbon content flyash is the flyash of loss on ignition >=15%.
The clay can also be the one kind in kaolin, bentonite, shale, magma soil.
Mesh ~ 200 mesh of particle size range 5 of the expanded perlite.
The preparation method of above-mentioned sintered coal ash expanded perlite water-permeable brick is as follows：
（1）, high carbon content flyash mixed with clay, silicon powder, bauxite, it is to be mixed it is uniform after add water stirring, water
Consumption for compound gross mass 10% ~ 20%；
（2）, expanded perlite is added into step by respective volume ratio（1）In the compound of acquisition, and stir；
（3）, by step（2）The compound ageing 24h ~ 72h of acquisition, then by given size extrusion molding, briquetting pressure 15MPa
~ 30MPa, obtains adobe；
（4）, brick bat drying, 110 DEG C of baking temperature, be dried to adobe residual moisture≤6%；
（5）, dried adobe entered into kiln be sintered, 1000 DEG C ~ 1100 DEG C of sintering temperature, sintering time 1h ~ 3h, then
Normal temperature is naturally cooling in stove.
Preferably, the expanded perlite that the expanded perlite can wrap up high carbon content flyash by appearance is replaced.
The preparation method of the expanded perlite of appearance parcel high carbon content flyash is as follows：
Expanded perlite water spray is prewetted, makes expanded perlite be in saturation but the not state of bleeding, then by high carbon content powder
Coal ash with prewet after expanded perlite uniformly mixed, the consumption of wherein high carbon content carbon dust coal ash be prewet before
1.1 ~ 1.5 times of expanded perlite quality, it is ensured that expanded perlite can be fully wrapped around by high carbon content flyash institute.
The usefulness of sintered coal ash expanded perlite water-permeable brick of the present invention and preparation method thereof is mainly manifested in following
Several respects：
Firstth, without additional high-temperature foaming agent, directly using carbon contained in high carbon content flyash as high-temperature foaming agent, fully
The hole produced using carbon burning, oxidation in sintering process and bubble, increase the porosity of water-permeable brick, improve the suction of water-permeable brick
Water, water conservation and water penetration, while reducing the production cost of water-permeable brick.
Secondth, expanded perlite low cost, easily obtains, and by changing its particle size and level matching somebody with somebody water-permeable brick hole is adjusted
Structure, can be effectively increased the porosity and number of openings of water-permeable brick, improve the water permeability of water-permeable brick.
3rd, high carbon content flyash is wrapped in into expanded perlite surface, in roasting process in flyash carbon burning
A big chunk heat can be provided, the pore structure and water-permeable passage of water-permeable brick, water-permeable brick are enriched in the fusing of accelerated expansion perlite
Water permeability is greatly improved, simultaneously because the liquid phase that expanded perlite is produced further increases the intensity of water-permeable brick.
4th, by adding appropriate silicon powder, bauxite, SiO in adjustment sintering brick permeable to water2、Al2O3Chemical composition
Ratio, further increases intensity, toughness and the wearability of water-permeable brick.
The present invention is reasonable in design, with high carbon content flyash and expanded perlite as main raw material(s), makes full use of height to contain
Contained carbon passes through as the fuel of high-temperature foaming agent, the flux of expanded perlite and sintering procedure in carbon amounts flyash
The size and level of expanded perlite particle diameter matches somebody with somebody to adjust water-permeable brick pore structure, and the water-permeable brick water permeability of preparation is good, and intensity is high,
Environmental protection and energy saving, it is adaptable to the permeable pavement structure in Route for pedestrians, cell, square, parking lot etc. and road surface.
Specific embodiment
The specific embodiment of the present invention is described in detail below.
Embodiment 1
Sintered coal ash expanded perlite water-permeable brick is fired by formula as below and formed：
High carbon content flyash 30%,
Clay 70%,
Silicon powder 0%,
Bauxite 0%,
Appearance wraps up the expanded perlite 50% of high carbon content flyash；
The above-mentioned formula high carbon content flyash, clay are mass percent, altogether 100%.
Expanded perlite is percent by volume, i.e., expanded perlite volume accounts for high carbon content flyash, clay compound body
Long-pending percentage.
Sintered coal ash expanded perlite water-permeable brick preparation method, comprises the following steps that：
（1）, the expanded perlite to particle diameter for 5 ~ 10 mesh carry out water spray and prewet, make the expanded perlite in saturation but not bleeding
State, then by high carbon content flyash with prewet after expanded perlite uniformly mixed, wherein high carbon content carbon dust
The consumption of coal ash is 1.1 times of the expanded perlite quality before prewetting, it is ensured that expanded perlite can be by high carbon content fine coal
Grey institute is fully wrapped around, obtains the expanded perlite that appearance wraps up high carbon content flyash；
（2）, according to mass percent high carbon content flyash 30%, clay 70% is mixed, it is to be mixed it is uniform after add water stirring,
The consumption of water is the 10% of compound gross mass；；
（3）, by step（1）The expanded perlite of the appearance parcel high carbon content flyash of acquisition 50% is added to step by volume
Suddenly（2）In the compound of acquisition, and stir；
（4）, by step（3）The compound ageing 24h of acquisition, then by given size extrusion molding, briquetting pressure 30MPa, obtains
Obtain adobe；
（5）, adobe is dried, 110 DEG C of baking temperature, be dried to adobe residual moisture≤6%；
（6）, dried adobe entered into kiln be sintered, then 1000 DEG C of sintering temperature, sintering time 1h drops naturally in stove
Temperature is to normal temperature.
Formula and sintered coal ash expanded perlite water-permeable brick obtained in preparation method more than, coefficient of permeability >=1.3 ×
10-2Cm/s, tensile splitting strength >=3.0MPa, frost resistance, wearability and skid resistance are satisfied by current specifications requirement.
Note：In the present embodiment, step（1）Can omit, directly the expanded perlite by particle diameter for 5 ~ 10 mesh is added to powder
In the compound of coal ash and clay, other step parameters are identical, the sintered coal ash expanded perlite water-permeable brick of preparation, permeable system
Number >=1.0 × 10-2Cm/s, tensile splitting strength >=3.0MPa, frost resistance, wearability and skid resistance are satisfied by current specifications will
Ask.
Embodiment 2
Sintered coal ash expanded perlite water-permeable brick is fired by formula as below and formed：
High carbon content flyash 50%,
Clay 50%,
Silicon powder 0%,
Bauxite 0%,
Appearance wraps up the expanded perlite 120% of high carbon content flyash；
The above-mentioned formula high carbon content flyash, clay are mass percent, altogether 100%.
Expanded perlite is percent by volume, i.e., expanded perlite volume accounts for high carbon content flyash, clay compound body
Long-pending percentage.
Sintered coal ash expanded perlite water-permeable brick preparation method, comprises the following steps that：
（1）, the expanded perlite to particle diameter for 150 mesh ~ 200 mesh carry out water spray and prewet, make expanded perlite in saturation but not
The state of bleeding, then by high carbon content flyash with prewet after expanded perlite uniformly mixed, wherein high carbon containing
The consumption of amount carbon dust coal ash is 1.5 times of the expanded perlite quality before prewetting, it is ensured that expanded perlite can be by high carbon containing
Amount flyash institute is fully wrapped around, obtains the expanded perlite that appearance wraps up high carbon content flyash；
（2）, according to mass percent high carbon content flyash 50%, clay 50% is mixed, it is to be mixed it is uniform after add water stirring,
The consumption of water is the 20% of compound gross mass；
（3）By step（1）The expanded perlite of the parcel high carbon content flyash of acquisition 120% is added to step by volume（2）
In the compound of acquisition, and stir；
（4）, by step（3）The compound ageing 72h of acquisition, then by given size extrusion molding, briquetting pressure 20MPa, obtains
Obtain adobe；
（5）, adobe is dried, 110 DEG C of baking temperature, be dried to adobe residual moisture and be less than 6%；
（6）, dried adobe entered into kiln be sintered, then 1050 DEG C of sintering temperature, sintering time 2h drops naturally in stove
Temperature is to normal temperature.
Formula and sintered coal ash expanded perlite water-permeable brick obtained in preparation method more than, coefficient of permeability >=1.5 ×
10-2Cm/s, tensile splitting strength >=3MPa, frost resistance, wearability and skid resistance are satisfied by current specifications requirement.
Embodiment 3
Sintered coal ash expanded perlite water-permeable brick is fired by formula as below and formed：
High carbon content flyash 30%,
Clay 60%,
Silicon powder 5%,
Bauxite 5%,
Appearance wraps up the expanded perlite 80% of high carbon content flyash；
The above-mentioned formula high carbon content flyash, clay, silicon powder, bauxite are mass percent, altogether 100%.
Expanded perlite is percent by volume, i.e., to account for high carbon content flyash, clay, silicon micro- for expanded perlite stacking volume
The percentage of powder, bauxite compound loosely-packed volume.
Sintering high carbon content powder coal ash expanding perlite water-permeable brick preparation method, comprises the following steps that：
（1）, to expanded perlite particle diameter volume ratio be,（30 mesh ~ 40 mesh）：（40 mesh ~ 60 mesh）：（60 mesh ~ 120 mesh）：（120 mesh ~
200 mesh）=10%：15%：20%：25%：15%：15% grade of expanded perlite matched somebody with somebody carries out water spray and prewets, and makes expanded perlite in full
With but the not state of bleeding, then by high carbon content flyash with prewet after expanded perlite uniformly mixed, wherein
The consumption of high carbon content carbon dust coal ash is 1.4 times of the expanded perlite quality before prewetting, it is ensured that expanded perlite can be by
High carbon content flyash institute is fully wrapped around, obtains the expanded perlite that appearance wraps up high carbon content flyash；
（2）, according to mass percent high carbon content flyash 30%, clay 60%, silicon powder 5%, bauxite 5% is mixed, is treated
Add water stirring after being well mixed, and the consumption of water is the 15% of compound gross mass；
（3）, by step（1）The expanded perlite of the parcel high carbon content flyash of acquisition 80% is added to step by volume（2）
In the compound of acquisition, and stir；
（4）, by step（3）The compound ageing 36h of acquisition, then by given size extrusion molding, briquetting pressure 15MPa, obtains
Obtain adobe；
（5）, adobe is dried, 110 DEG C of baking temperature, be dried to adobe residual moisture and be less than 6%；
（6）, dried adobe entered into kiln be sintered, then 1100 DEG C of sintering temperature, sintering time 2h drops naturally in stove
Temperature is to normal temperature.
Formula and sintered coal ash expanded perlite water-permeable brick obtained in preparation method more than, coefficient of permeability >=2.5 ×
10-2Cm/s, tensile splitting strength >=3MPa, frost resistance, wearability and skid resistance are satisfied by current specifications requirement.
In the present embodiment, match somebody with somebody to adjust water-permeable brick pore structure by change expanded perlite particle size and level, effectively
Increase the porosity and number of openings of water-permeable brick, improve the water permeability of water-permeable brick.
Embodiment 4
Sintered coal ash expanded perlite water-permeable brick is fired by formula as below and formed：
High carbon content flyash 35%,
Clay 60%,
Silicon powder 2.5%,
Bauxite 2.5%,
Appearance wraps up the expanded perlite 100% of high carbon content flyash；
The above-mentioned formula high carbon content flyash, clay, silicon powder, bauxite are quality percentage, altogether 100%.
Expanded perlite is percent by volume, i.e., to account for high carbon content flyash, clay, silicon micro- for expanded perlite stacking volume
The percentage of powder, bauxite compound loosely-packed volume.
Sintering high carbon content powder coal ash expanding perlite water-permeable brick preparation method, comprises the following steps that：
（1）, the expanded perlite to particle diameter for 30 mesh ~ 40 mesh carry out water spray and prewet, make expanded perlite in saturation but do not secrete
The state of water, then by high carbon content flyash with prewet after expanded perlite uniformly mixed, wherein high carbon content
The consumption of carbon dust coal ash is 1.2 times of the expanded perlite quality before prewetting, it is ensured that expanded perlite can be by high carbon content
Flyash institute is fully wrapped around, obtains the expanded perlite that appearance wraps up high carbon content flyash；
（2）, according to mass percent high carbon content flyash 35%, clay 60%, silicon powder 2.5%, bauxite 2.5% is mixed
Close, it is to be mixed it is uniform after add water stirring, the consumption of water is the 16% of compound gross mass；
（3）, by step（1）The expanded perlite of the parcel high carbon content flyash of acquisition 100% is added to step by volume
（2）In the compound of acquisition, and stir；
（4）, by step（3）The compound ageing 36h of acquisition, then by given size extrusion molding, briquetting pressure 30MPa, obtains
Obtain adobe；
（5）, adobe is dried, 110 DEG C of baking temperature, be dried to adobe residual moisture and be less than 6%；
（6）, dried adobe entered into kiln be sintered, 1080 DEG C of sintering temperature, sintering time 1.5h is then natural in stove
It is cooled to normal temperature.
Formula and sintered coal ash expanded perlite water-permeable brick obtained in preparation method more than, coefficient of permeability >=2.0 ×
10-2Cm/s, tensile splitting strength >=3MPa, frost resistance, wearability and skid resistance are satisfied by current specifications requirement.
It should be noted last that, above example is only unrestricted to illustrate technical scheme, although ginseng
It has been described in detail according to the embodiment of the present invention, it will be understood by those within the art that, to technical scheme
Modify or equivalent, without departure from the spirit and scope of technical scheme, it all should cover claim
In protection domain.
Claims (9)
1. a kind of sintered coal ash expanded perlite water-permeable brick, it is characterised in that：With high carbon content flyash, clay, silicon powder,
Bauxite, expanded perlite are raw material, fire by formula as below and form：
High carbon content flyash 30% ~ 50%,
Clay 50% ~ 70%,
Silicon powder 0 ~ 5%,
Bauxite 0 ~ 5%；
Expanded perlite 50% ~ 120%；
The above-mentioned formula high carbon content flyash, clay, silicon powder, bauxite are mass percent, and four kinds of material qualities are total
It is calculated as 100%；
The expanded perlite for percent by volume, i.e. expanded perlite volume account for high carbon content flyash, clay, silicon powder,
The percentage of bauxite mixture volume.
2. sintered coal ash expanded perlite water-permeable brick according to claim 1, it is characterised in that：The high carbon content powder
Coal ash is the flyash of loss on ignition >=15%.
3. sintered coal ash expanded perlite water-permeable brick according to claim 1 and 2, it is characterised in that：The clay by
Kaolin, bentonite, shale or magma soil is replaced.
4. sintered coal ash expanded perlite water-permeable brick according to claim 2, it is characterised in that：The expanded perlite
The expanded perlite for wrapping up high carbon content flyash by appearance is replaced.
5. the sintered coal ash expanded perlite water-permeable brick according to claim 1 or 4, it is characterised in that：The expansion is precious
Mesh ~ 200 mesh of particle size range 5 of Zhu Yan.
6. sintered coal ash expanded perlite water-permeable brick according to claim 5, it is characterised in that：The expanded perlite
Particle diameter be with volume proportionate relationship with level,（30 mesh ~ 40 mesh）：（40 mesh ~ 60 mesh）：（60 mesh ~ 120 mesh）：（120 mesh ~ 200 mesh）
=10%：15%：20%：25%：15%：15%.
7. the preparation method of the sintered coal ash expanded perlite water-permeable brick described in a kind of claim 1, it is characterised in that：Including
Following steps：
（1）, high carbon content flyash mixed with clay, silicon powder, bauxite, it is to be mixed it is uniform after add water stirring, water
Consumption for compound gross mass 10% ~ 20%；
（2）, expanded perlite is added into step by respective volume ratio（1）In the compound of acquisition, and stir；
（3）, by step（2）The compound ageing 24h ~ 72h of acquisition, then by given size extrusion molding, briquetting pressure 15MPa
~ 30MPa, obtains adobe；
（4）, brick bat drying, 110 DEG C of baking temperature, be dried to adobe residual moisture≤6%；
（5）, dried adobe entered into kiln be sintered, 1000 DEG C ~ 1100 DEG C of sintering temperature, sintering time 1h ~ 3h, then
Normal temperature is naturally cooling in stove.
8. the preparation method of the sintered coal ash expanded perlite water-permeable brick described in a kind of claim 4, it is characterised in that：Including
Following steps：
（1）, expanded perlite water spray prewetted, make expanded perlite in saturation but the not state of bleeding, then by high carbon containing
Expanded perlite after measuring flyash and prewetting uniformly is mixed, and wherein the consumption of high carbon content carbon dust coal ash is to prewet it
1.1 ~ 1.5 times of front expanded perlite quality, it is ensured that expanded perlite can be fully wrapped around by high carbon content flyash institute；
（2）, high carbon content flyash mixed with clay, silicon powder, bauxite, it is to be mixed it is uniform after add water stirring, water
Consumption for compound gross mass 10% ~ 20%；
（3）, by appearance wrap up high carbon content flyash expanded perlite be added to step by respective volume ratio（2）What is obtained is mixed
In closing material, and stir；
（4）, by step（3）The compound ageing 24h ~ 72h of acquisition, then by given size extrusion molding, briquetting pressure 15MPa
~ 30MPa, obtains adobe；
（5）, brick bat drying, 110 DEG C of baking temperature, be dried to adobe residual moisture≤6%；
（6）, dried adobe entered into kiln be sintered, 1000 DEG C ~ 1100 DEG C of sintering temperature, sintering time 1h ~ 3h, then
Normal temperature is naturally cooling in stove.
9. the preparation method of sintered coal ash expanded perlite water-permeable brick according to claim 8, it is characterised in that：Step
（1）In, particle diameter and the level of the expanded perlite be with volume proportionate relationship,（30 mesh ~ 40 mesh）：（40 mesh ~ 60 mesh）：（60 mesh ~
120 mesh）：（120 mesh ~ 200 mesh）=10%：15%：20%：25%：15%：15%.
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| CN110028334A (en) * | 2019-03-20 | 2019-07-19 | 广西大学 | A kind of ecology damping brick and preparation method thereof |
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