CN110451928A - A kind of sponge water-permeable brick and preparation method thereof - Google Patents
A kind of sponge water-permeable brick and preparation method thereof Download PDFInfo
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- CN110451928A CN110451928A CN201910789277.XA CN201910789277A CN110451928A CN 110451928 A CN110451928 A CN 110451928A CN 201910789277 A CN201910789277 A CN 201910789277A CN 110451928 A CN110451928 A CN 110451928A
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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
- C04B33/1305—Organic additives
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- C—CHEMISTRY; METALLURGY
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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
- 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
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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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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- 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
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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
- 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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- 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
- 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
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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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 present invention discloses a kind of sponge water-permeable brick and preparation method thereof, belong to water-permeable brick technical field, be made of the raw material of following weight parts: 80-90 parts of sewage sludge powder, 5-10 parts of modified polypropylene fiber, 3-5 parts of granite aggregate, 1-3 parts of expanded perlite, 15-20 parts of bentonite, 5-10 parts of flyash, 5-10 parts of diatomite.Water-permeable brick compression strength prepared by the present invention is high, good water permeability, performance with absorbing sound and lowering noise, meet " water-permeable brick " (CJ/T945~2005) professional standard, it is low in cost simultaneously, can industrialized production, responded sponge the idea of the city, can be used as construction material important in sponge urban construction.
Description
Technical field
The present invention relates to water-permeable brick technical field, in particular to a kind of sponge water-permeable brick and preparation method thereof.
Background technique
Under the big historical background of nowadays sponge city all-round construction development, how natural precipitation is utilized, alleviates arid, flood
The problem of disasters such as flood, more highlights, and then the development of seepy material especially water-permeable brick is particularly important.Most of water-permeable brick benefit
It is formed with industrial waste-material-preparing, and there is good physical property, in building sponge city, it is essential composition
Part.
The some water-permeable brick primary raw materials of China currently on the market are ceramics or common pervious concrete, and ceramic water-permeable brick needs
A large amount of kaolin resource is used, the exploitation of raw material causes the destruction to environment, and ceramic mould water-permeable brick production technology is complicated,
Ceramic base brick needs to expend in forming and sintering a large amount of energy, and at high cost, production efficiency is low, and Environmental Inputs are big, disposable to throw
Money scale is big.
In addition, for ordinary cement sill, material generally has higher since water-permeable brick is to guarantee its permeability rate
Porosity, it is desirable that porosity is 10% or more.Therefore, the connection between aggregate is more weak, and the intensity of common water-permeable brick wants low
In other bricks, and then cause water-permeable brick toughness poor, be easily destroyed after stress load reaches peak value, is shown apparent crisp
Property, it easily cleaves, frangible, injury resistant ability is poor.
Summary of the invention
The present invention provides a kind of sponge water-permeable brick and preparation method thereof, solve that existing water-permeable brick toughness is poor to ask
Topic.
In order to solve the above technical problems, the technical solution of the present invention is as follows:
A kind of sponge water-permeable brick, is made of the raw material of following weight parts: 80-90 parts of sewage sludge powder, modified polypropene are fine
Tie up 5-10 parts, 3-5 parts of granite aggregate, 1-3 parts of expanded perlite, 15-20 parts of bentonite, 5-10 parts of flyash, diatomite
5-10 parts.
Wherein it is preferred to which the sewage sludge powder is made of following preparation methods:
(1) sludge is packed into blender, adds wheat stalk, the additive amount of wheat stalk be sludge weight 20~
30%, it stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 50~60%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 3-5h, be added
Hydro-extracting cage water dumping；
(3) it is put into vacuum oven after water dumping, dry 10-12h must be done under the conditions of 60-65 DEG C and 0.01-0.02MPa
Dry object；
(4) dried object is put into tube furnace, 500-600 DEG C of heat treatment 2-3h is cooled to room temperature after processing and stops leading to
Enter nitrogen, taking out that treated, solid crushes, and crosses 300-320 mesh, obtains sewage sludge powder.
Wherein it is preferred to which the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, add
The quinacridone for adding 0.05-0.15% weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
A kind of preparation method of sponge water-permeable brick, includes the following steps:
(1) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(2) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(3) mixed powder of brick-shaped is placed in the heating of kiln high temperature；Then it cools to room temperature with the furnace again, can obtain
The water-permeable brick that must be shaped.
Wherein it is preferred to by the flyash grinding distribution to 40~60 mesh before step (1).
Wherein it is preferred to first be warming up to 300 after being placed in kiln in the step (3) with 3~5 DEG C/min heating rate
~400 DEG C, 2~3h of heat preservation sintering, 1000~1200 DEG C then are warming up to 10~15 DEG C/min heating rate, heat preservation sintering 1
~2h.
Wherein it is preferred to after being cooled to room temperature in the step (3), then temperature be 25~27 DEG C, humidity be 60~
It is conserved 3~5 days under conditions of 70%, water-permeable brick can be obtained after maintenance.
Beneficial effects of the present invention:
Polypropylene fibre is added in water-permeable brick raw material the present invention, stands cementing material between aggregate with what fiber formation intersected
Body web improves the intensity of water-permeable brick, and polypropylene fibre plays the role of " bridging ", improves water-permeable brick toughness.
Polypropylene fibre in the present invention is modified by quinacridone and is surface-treated, more to the raising of water-permeable brick performance
Effectively, water-permeable brick water permeability can be improved, it is higher than the water-permeable brick compression strength under the conditions of, meanwhile, modified polypropene is fine
The addition of dimension also improves the durability of material.
The present invention adds organic matter stalk in sludge, not only solves the Moisture Content of sludge, and heap body can also be allowed to heat up
Fastly, fermentation is thorough；Water-permeable brick prepared by the present invention not only solves the problems, such as the processing of sludge, also accomplishes resource circulation utilization, protection
Environment, energy conservation and environmental protection have good social benefit.
Water-permeable brick compression strength prepared by the present invention is high, good water permeability, and the performance with absorbing sound and lowering noise meets " water-permeable brick "
(CJ/T945~2005) professional standard, while low in cost, can industrialized production, responded sponge the idea of the city, can be used as sea
Important construction material in continuous urban construction.
Specific embodiment
Below in conjunction with the specific embodiment of the invention, technical solution of the present invention is clearly and completely described, is shown
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 85 parts of sewage sludge powder is modified
8 parts of polypropylene fibre, 4 parts of granite aggregate, 2 parts of expanded perlite, 18 parts of bentonite, 8 parts of flyash, 8 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 25% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 55%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 4h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 11h obtains dried object under the conditions of 62 DEG C and 0.015MPa；
(4) dried object is put into tube furnace, 550 DEG C of heat treatment 2.5h are cooled to room temperature after processing and stop being passed through nitrogen
Gas takes out treated solid and crushes, crosses 300 meshes, obtain sewage sludge powder.
Wherein, the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, addition 0.10%
The quinacridone of weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 60 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 4 DEG C/min heating
Rate is warming up to 350 DEG C, heat preservation sintering 2.5h, is then warming up to 1100 DEG C with 12 DEG C/min heating rate, heat preservation sintering 1.5h；
Then it cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then in the item that temperature is 25~27 DEG C, humidity is 60~70%
It is conserved 4 days under part, water-permeable brick can be obtained after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 58MPa, coefficient of permeability 2.52 × 102Cm/s grinds anti-length
No more than 36mm, less than 15%, other indexs meet " thoroughly 51.6,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
Embodiment 2
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 80 parts of sewage sludge powder is modified
10 parts of polypropylene fibre, 3 parts of granite aggregate, 3 parts of expanded perlite, 15 parts of bentonite, 10 parts of flyash, 5 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge is packed into blender, adds wheat stalk, the additive amount of wheat stalk be sludge weight 20~
30%, it stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 50%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 5h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 10 obtain dried object under the conditions of 60 DEG C and 0.02MPa；
(4) dried object being put into tube furnace, 500 DEG C of heat treatment 3h are cooled to room temperature after processing and stop being passed through nitrogen,
It takes out treated solid to crush, crosses 300 meshes, obtain sewage sludge powder.
Wherein, the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, adds 0.05-
The quinacridone of 0.15% weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 40 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 3 DEG C/min heating
Rate is warming up to 400 DEG C, heat preservation sintering 2h, is then warming up to 1000 DEG C with 15 DEG C/min heating rate, heat preservation sintering 2h；Then
It cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then in the item that temperature is 25~27 DEG C, humidity is 60~70%
It is conserved 3 days under part, water-permeable brick can be obtained after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 56MPa, coefficient of permeability 2.50 × 102Cm/s grinds anti-length
No more than 35mm, less than 16%, other indexs meet " thoroughly 52.8,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
Embodiment 3
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 90 parts of sewage sludge powder is modified
5 parts of polypropylene fibre, 5 parts of granite aggregate, 1 part of expanded perlite, 20 parts of bentonite, 5 parts of flyash, 10 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 30% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 50%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 5h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 12h obtains dried object under the conditions of 65 DEG C and 0.01MPa；
(4) dried object being put into tube furnace, 600 DEG C of heat treatment 2h are cooled to room temperature after processing and stop being passed through nitrogen,
It takes out treated solid to crush, crosses 320 meshes, obtain sewage sludge powder.
Wherein, the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, adds 0.05-
The quinacridone of 0.15% weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 40 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 5 DEG C/min heating
Rate is warming up to 300 DEG C, heat preservation sintering 3h, is then warming up to 1200 DEG C with 10 DEG C/min heating rate, heat preservation sintering 1h；Then
It cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then in the item that temperature is 25~27 DEG C, humidity is 60~70%
It is conserved 5 days under part, water-permeable brick can be obtained after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 59MPa, coefficient of permeability 2.51 × 102Cm/s grinds anti-length
No more than 38mm, less than 17%, other indexs meet " thoroughly 52.5,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
Embodiment 4
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 82 parts of sewage sludge powder is modified
9 parts of polypropylene fibre, 3 parts of granite aggregate, 3 parts of expanded perlite, 16 parts of bentonite, 9 parts of flyash, 8 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 24% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 56%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 4h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 11h obtains dried object under the conditions of 64 DEG C and 0.015MPa；
(4) dried object is put into tube furnace, 580 DEG C of heat treatment 2.5h are cooled to room temperature after processing and stop being passed through nitrogen
Gas takes out treated solid and crushes, crosses 300 meshes, obtain sewage sludge powder.
Wherein, the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, addition 0.08%
The quinacridone of weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 60 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 5 DEG C/min heating
Rate is warming up to 350 DEG C, heat preservation sintering 2.5h, is then warming up to 1100 DEG C with 12 DEG C/min heating rate, heat preservation sintering 1.5h；
Then it cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then in the item that temperature is 25~27 DEG C, humidity is 60~70%
It is conserved 5 days under part, water-permeable brick can be obtained after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 56MPa, coefficient of permeability 2.49 × 102Cm/s grinds anti-length
No more than 35mm, less than 16%, other indexs meet " thoroughly 50.9,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
Embodiment 5
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 88 parts of sewage sludge powder is modified
6 parts of polypropylene fibre, 4 parts of granite aggregate, 2 parts of expanded perlite, 19 parts of bentonite, 7 parts of flyash, 8 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 28% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 51%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 4h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 12h obtains dried object under the conditions of 64 DEG C and 0.012MPa；
(4) dried object is put into tube furnace, 560 DEG C of heat treatment 2.5h are cooled to room temperature after processing and stop being passed through nitrogen
Gas takes out treated solid and crushes, crosses 320 meshes, obtain sewage sludge powder.
Wherein, the modified polypropylene fiber is made of following preparation methods: taking polypropylene PP to be sliced, addition 0.13%
The quinacridone of weight, through Screw Extrusion melt pelletization, then through short silk spinning machine spinning to get.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 60 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 4 DEG C/min heating
Rate is warming up to 380 DEG C, heat preservation sintering 2.5h, is then warming up to 1200 DEG C with 14 DEG C/min heating rate, heat preservation sintering 1.5h；
Then it cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then under conditions of temperature is 26 DEG C, humidity is 65% 4 are conserved
It, can be obtained water-permeable brick after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 59MPa, coefficient of permeability 2.51 × 102Cm/s grinds anti-length
No more than 37mm, less than 17%, other indexs meet " thoroughly 52.2,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
Comparative example 1
The present embodiment provides a kind of sponge water-permeable bricks, are made of the raw material of following weight parts: 85 parts of sewage sludge powder, poly- third
8 parts of alkene fiber, 4 parts of granite aggregate, 2 parts of expanded perlite, 18 parts of bentonite, 8 parts of flyash, 8 parts of diatomite.
Wherein, the sewage sludge powder is made of following preparation methods:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 25% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 55%, the sludge after must fermenting；
(2) be by weight by sludge 1:3 be added mass fraction be 5% sodium bicarbonate solution in impregnate 4h, addition is got rid of
Water dispenser water dumping；
(3) it is put into vacuum oven after water dumping, dry 11h obtains dried object under the conditions of 62 DEG C and 0.015MPa；
(4) dried object is put into tube furnace, 550 DEG C of heat treatment 2.5h are cooled to room temperature after processing and stop being passed through nitrogen
Gas takes out treated solid and crushes, crosses 300 meshes, obtain sewage sludge powder.
The preparation method of sponge water-permeable brick, includes the following steps: in the present embodiment
(1) by flyash grinding distribution to 60 mesh；
(2) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, silicon are taken
Diatomaceous earth, which uniformly mixes, obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(3) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(4) by the mixed powder of brick-shaped be placed in kiln high temperature heating be placed in kiln after, first with 4 DEG C/min heating
Rate is warming up to 350 DEG C, heat preservation sintering 2.5h, is then warming up to 1100 DEG C with 12 DEG C/min heating rate, heat preservation sintering 1.5h；
Then it cools to room temperature with the furnace again, can be obtained the water-permeable brick of forming.
Wherein, after being cooled to room temperature in the step (3), then in the item that temperature is 25~27 DEG C, humidity is 60~70%
It is conserved 4 days under part, water-permeable brick can be obtained after maintenance.
After tested, the water-permeable brick compression strength of the present embodiment is 54MPa, coefficient of permeability 2.50 × 102Cm/s grinds anti-length
No more than 35mm, less than 16%, other indexs meet " thoroughly 51.7,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.It can be seen from above content comparative example compared with Example 1, comparative example use
It is polypropylene fibre, for embodiment 1 using modified polypropylene fiber, other components and technological parameter are same as Example 1.
The compression strength of comparative example 1 is significantly lower than embodiment 1 it can be seen from performance detection data.
After tested, the water-permeable brick compression strength of the present embodiment is 58MPa, coefficient of permeability 2.52 × 102Cm/s grinds anti-length
No more than 36mm, less than 15%, other indexs meet " thoroughly 51.6,25 Frozen-thawed cycled compression strength loss of bending strength
Water brick " (CJ/T945~2005) standard.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of sponge water-permeable brick, it is characterised in that be made of the raw material of following weight parts: 80-90 parts of sewage sludge powder is modified
5-10 parts of polypropylene fibre, 3-5 parts of granite aggregate, 1-3 parts of expanded perlite, 15-20 parts of bentonite, flyash 5-10
Part, 5-10 parts of diatomite.
2. a kind of sponge water-permeable brick according to claim 1, it is characterised in that: the sewage sludge powder is by following preparation sides
Method is made:
(1) sludge being packed into blender, adds wheat stalk, the additive amount of wheat stalk is the 20~30% of sludge weight,
It stirs evenly and has carried out oxidative fermentation, the mixed material after fermentation is dehydrated to 50~60%, the sludge after must fermenting；
(2) by weight it is that 1:3 is added in the sodium bicarbonate solution that mass fraction is 5% and impregnates 3-5h by sludge, water dumping is added
Machine water dumping；
(3) it is put into vacuum oven after water dumping, dry 10-12h must be dry under the conditions of 60-65 DEG C and 0.01-0.02MPa
Object；
(4) dried object is put into tube furnace, 500-600 DEG C of heat treatment 2-3h is cooled to room temperature after processing and stops being passed through nitrogen
Gas takes out treated solid and crushes, crosses 300-320 mesh, obtain sewage sludge powder.
3. a kind of sponge water-permeable brick according to claim 1, it is characterised in that: the modified polypropylene fiber is by following
Preparation method is made: taking polypropylene PP to be sliced, adds the quinacridone of 0.05-0.15% weight, makes through Screw Extrusion melting
Grain, then through short silk spinning machine spinning to get.
4. a kind of preparation method of sponge water-permeable brick, it is characterised in that include the following steps:
(1) sewage sludge powder, modified polypropylene fiber, granite aggregate, expanded perlite, bentonite, flyash, diatomite are taken
Uniformly mixing obtains mixed powder, and mixed powder is poured into powder mixing and blending machine；
(2) mixed powder is put into the mixed powder that brick-shaped is squeezed into square compressor；
(3) mixed powder of brick-shaped is placed in the heating of kiln high temperature；Then it cools to room temperature with the furnace again, can be obtained into
The water-permeable brick of shape.
5. a kind of preparation method of sponge water-permeable brick according to claim 4, it is characterised in that: by institute before step (1)
Flyash grinding distribution is stated to 40~60 mesh.
6. a kind of preparation method of sponge water-permeable brick according to claim 4, it is characterised in that: put in the step (3)
After being placed in kiln, 300~400 DEG C first are warming up to 3~5 DEG C/min heating rate, 2~3h of heat preservation sintering, then with 10~15
DEG C/min heating rate is warming up to 1000~1200 DEG C, 1~2h of heat preservation sintering.
7. a kind of preparation method of sponge water-permeable brick according to claim 4, it is characterised in that: cold in the step (3)
But it to after room temperature, then conserves 3~5 days under conditions of temperature is 25~27 DEG C, humidity is 60~70%, can be obtained after maintenance
Water-permeable brick.
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Application publication date: 20191115 |