CN105152609B - Building brick prepared with the flying dust after consumer waste incineration or slag and preparation method thereof - Google Patents

Building brick prepared with the flying dust after consumer waste incineration or slag and preparation method thereof Download PDF

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Publication number
CN105152609B
CN105152609B CN201510410086.XA CN201510410086A CN105152609B CN 105152609 B CN105152609 B CN 105152609B CN 201510410086 A CN201510410086 A CN 201510410086A CN 105152609 B CN105152609 B CN 105152609B
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slag
waste incineration
brick
flying dust
building brick
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CN105152609A (en
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黄华大
方炎章
潘朝权
袁静
裴亚弟
向文
朱兆铮
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SICHUAN FANGDA ADVANCED BUILDING MATERIALS TECHNOLOGY DEVELOPMENT Co Ltd
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SICHUAN FANGDA ADVANCED BUILDING MATERIALS TECHNOLOGY DEVELOPMENT Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

Building brick and its method for preparation prepared by flying dust or slag after present invention consumer waste incineration, belong to building material field.Building brick prepared by the present invention, is composed of the following raw materials by weight:Aggregate:45~50 parts;Cementitious matter:10~15 parts;Alkali-activator:0~10 part;Silica sand (SiO2Content >=65%):30~35 parts;Wherein, the aggregate is at least one of the flying dust after waste incineration, slag;Cementitious matter is made up of at least three kinds in quick lime, quartz sand, flyash, clinker, useless brick;Alkali-activator is made up of at least two kinds in cement, waterglass, water-granulated slag, soda ash.Building brick function admirable prepared by the present invention, the flying dust after consumer waste incineration and the industrial residue such as slag and flyash, clinker can be made full use of, utilization rate is high, product only needs to high-pressure saturated steam maintenance, save the energy, cost is reduced, the pollutant toxicity leaching concentration of wherein solidification and stabilization product is low.

Description

Building brick prepared with the flying dust after consumer waste incineration or slag and preparation method thereof
Technical field
The invention discloses the building brick prepared with the flying dust after consumer waste incineration or slag, steam pressure wall is especially prepared Brick and floor tile, and its prepare method, belong to building material field.
Background technology
With China's rapid development of economy, urbanization process speed is constantly accelerated, and the continuous of living standards of the people carries Height, the yield of domestic waste is continuously increased, and garbage disposal is innoxious to have become the task of top priority.And with processing speed Hurry up, floor space is few, minimizing and innoxious effect it is good burn again into one of main method of garbage disposal, but for Another problem that the processing of flying dust and slag after burning is thought deeply into people again.Due to the flying dust left after consumer waste incineration In poisonous and hazardous heavy metal and the salt such as Cd, Pb, Cu, Cr, Hg containing the substantial amounts of higher concentration being flooded out, it is therefore raw Flying dust after waste incineration living is danger wastes by example, and environment is both polluted if directly filled, poison air with Water source, also wastes resource.The current processing method of flying dust left after consumer waste incineration has:1st, enter after appropriate disposal Hazardous waste landfill carries out final disposal;2nd, the heavy metal in flying dust is carried using acid, alkali carries, biology and biological agent are extracted Extracted etc. mode, then carry out resource allocation utilization;3rd, solidification and stabilization:For example, cement solidification, bitumen solidification, melting and solidification Technology, chemical agent solidification and stabilization etc., the product after solidification and stabilization is handled, if meet Leaching standard or Recycling standard, can enter common landfill yard and dispose or carry out resource reutilization.In recent years, it has been found that house refuse The flying dust and slag left after burning, can be with materials such as the steam-pressing brisks of cycling and reutilization making building and road.
Steam-pressing brisk is that in high-pressure saturated steam maintenance, occur hydrothermal chemical reaction generation by calcareous material and siliceous material Silicate cementing material, cementing aggregate and a kind of New Building Materials for producing intensity.The brick outward appearance is neat, and intensity is high, durable The good, dimensional standard of property, color and luster are homogeneous, and the outward appearance with primitive simplicity and nature can do wall body brick or pavement bricks and square brick etc..Cause This, is a kind of extremely promising substitution clay brick, waste residue comprehensive utilization, eliminates environmental pollution, economize the land resource, promote The building of town and country Employment and the renewal product of road brick.
Application No. " 2010100539177.0 ", entitled " one kind prepares clinker using domestic waste incineration residue The method of baking-free wall brick ", it is raw material using domestic waste incineration residue, lime, cement, gypsum, exciting agent to disclose a kind of, The method for producing baking-free wall brick by compacting, maintenance.The invention has only used the clinker after consumer waste incineration, does not utilize Poisonous and hazardous domestic garbage incineration flyash is raw material, and without using high-pressure saturated steam maintenance;Also contain in raw material CaO > 32%, SO in 7.6%~19% gypsum, gypsum3> 45%, gypsum cost is higher.
Application No. " 201010539233.0 ", entitled " the concrete code prepared with domestic waste incineration residue Head brick and preparation method thereof ", disclose it is a kind of with 16.1%~40.9% domestic waste incineration residue, 12.9%~18.1% Cement, 12.51%~30.9% rubble, 28.1%~43.9% coarse sand, 2.5%~5.9% additive is bottom Fabric, with 18.9%~30.1% cement, 68.9%~80.1% fine sand, 8%~12% water is face stock, is passed through Layering compacting, maintenance, the method that concrete quay brick is made.The patented product belongs to the concrete product of natural curing, be with Cement is cementitious matter;And domestic waste incineration residue utilization rate is low, do not flown at all using poisonous and hazardous consumer waste incineration Ash is raw material.
Application No. " 201010206551.5 ", the entitled " flying dust being made after waste incineration flying ash washing Fired brick and preparation method thereof ", disclose it is a kind of by mass percent for 25%~35% washing after consumer waste incineration Flying dust, 45%~70% clay and 5%~20% feldspar composition, its preparation method is at waste incineration flying ash washing Reason, material smash pre-treatment, the crushing of material, raw material aging, raw material shaping, body drying, sinter the steps such as brick into.The patent Complex process, the flying dust utilization rate after waste incineration is not high, and because the flyash ingredient after waste incineration is complicated, quality compared with Gently, it is typically only capable to when handling in the prior art using the mode for being sintered at high temperature into brick, compared with steam press maintenance is into brick, cost is more Height, technique is more difficult to.
The content of the invention
First technical problem to be solved by this invention is to provide a kind of flying dust or slag system with after consumer waste incineration Standby building brick.
The building brick prepared with the flying dust after consumer waste incineration or slag, is composed of the following raw materials by weight:
Wherein, the aggregate is at least one of the flying dust after waste incineration, slag;The cementitious matter is by quick lime, fine coal At least three kinds compositions in ash, quartz sand, clinker, useless brick;The alkali-activator is by cement, waterglass, water-granulated slag, soda ash In at least two kinds composition;The silica sand is river sand, artificial sand, mountain sand, wind collection sand.
Wherein, the quick lime is the new fresh lime containing active CaO >=70%, MgO≤5%;Cement is P.O42.5R water Mud, i.e. Portland cement.
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, be composed of the following raw materials by weight:
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, be composed of the following raw materials by weight:
Further, as preferred technical scheme, aggregate described above is preferably the flying dust after waste incineration.According to 《National Hazard waste register》In definition on danger, the flying dust after waste incineration belongs to environmental improvement industry, waste generation Code is 802-002-18, and its hazard property belongs to T (Toxicity) class, is virose class discarded object.According to pertinent literature Report:Flying dust is that flying dust is typically in canescence or Dark grey, and particle diameter is small in thin particulate matter obtained by flue gas purification system collection In 300 μm, most of is 1.0 μm~30 μm, moisture content 10%~23%, clinker ignition loss 34%~51%, easy frost heave, hardly possible pressure It is real, being in bar-shaped, flocculence particle shape, the irregular shape such as spherical, flyash ingredient is complicated, mainly contains CaO, SiO more2、 Na2O、SO3、K2O、Fe2O3、Al2O3, MgO, wherein, CaO mass fraction highests, are 20.4%~37.9%, secondly be SO3、 SiO2;Main harm material is heavy metal (Hg, Cu, Zn, Pb, Cd, Ni, Cr etc.) and bioxin;The quality of chlorine in flying ash Fraction is high, reaches as high as 15%, wherein the ratio that solvable chlorine accounts for total chlorine is 40.6%~83.9%.
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, the cementitious matter by weight percentage, preferably by quick lime:Quartz sand:Flyash=80:10:10 compositions;It is described Alkali-activator by weight percentage, preferably by cement:Water-granulated slag=70:30 compositions.
Second technical problem to be solved by this invention is to provide a kind of flying dust or slag system with after consumer waste incineration The method of standby building brick.
Wherein, the preparation method of described building brick, comprises the following steps:
A, raw material prepare:Each component dispensing is weighed by the predetermined weight part composition of building brick;And wherein will wear into cementitious matter Fine powder so that more than 95% fine powder particle diameter≤0.08mm;Slag after consumer waste incineration should be sorted, crushed, being classified to reach to use and want Ask;
B, add water and clear up:By the ready raw material of a steps, the stirring that added water in biaxial rneader is mixed into uniform wet thing Material, into slaking silos in absorb water and clear up;
C, pressing unfired brick:The wet stock come out from slaking silos is added water stirring and is mixed into molding mass, brick machine is re-fed into It is pressed into adobe;
D, maintenance:The adobe that step c is obtained is conserved in the still kettle of gauge pressure >=1.5MPa saturated vapor, produces steaming Press brick;Wherein, 200 DEG C of saturated vapor curing temperature >, curing time is 6~9h.
Further, the preparation method of building brick described above, wherein, the pressure of saturated vapor pressure in Step d still kettle Preferably 1.5~2.0MPa, saturated vapor curing temperature is preferably 200~215 DEG C.
In order to obtain the brick that can better meet performance requirement for building, heretofore described building brick is preferably steam pressure wall Body brick and floor tile.
Compared with prior art, the present invention has following beneficial effect:
1st, building brick prepared by the present invention is mainly raw material with the flying dust or slag after waste incineration, is the life of hazardous waste Flying dust recycling after waste incineration, which is recycled, provides a new approach, you can substituting sintered clay brick is used to build Thing;Reduce pollution of the house refuse residue to environment again, be truly realized the comprehensive utilization of resource, save, save land, save soil and Preserve the ecological environment.
Building brick prepared by flying dust or slag the 2, after present invention consumer waste incineration has good building performance, and it is given birth to Production. art only needs to autoclave curing, is not required to sintering, has saved the energy, reduced cost.
Building brick intensity prepared by flying dust or slag the 3, after present invention consumer waste incineration is high, its compression strength > 15MPa, steam-pressing brisk averagely weighs 2728g, and frost resistance is qualified, and the wherein harmful element toxicity leaching concentration of solidification and stabilization product Meet《Household refuse landfill sites contamination control standard》(GB16889-2008) standard requirement.
4th, present invention process is simple, and cost is low, can not only utilize the slag after consumer waste incineration, moreover it is possible to utilize waste incineration Flying dust afterwards, or even can also be using industrial residues such as flyash, clinker, useless bricks, and utilization rate is higher, can resource to greatest extent Comprehensive utilization and environmental protection.
5th, the present invention prepares building brick using the flying dust after burning, while by the way of steam press maintenance;And prior art For the requirement of minimum more than the 15MPa that reaches brick compression strength, generally by the way of high-temperature roasting or melting.Phase Than, technique of the invention is simple, and cost is very low, easy to operate, and utilization rate is high, can environmental protection to greatest extent, realize resource The purpose of comprehensive utilization.
Embodiment
The building brick prepared with the flying dust after consumer waste incineration or slag, is composed of the following raw materials by weight:
Wherein, the aggregate is at least one of the flying dust after waste incineration, slag;The cementitious matter is by quick lime, fine coal At least three kinds compositions in ash, quartz sand, clinker, useless brick;The alkali-activator is by cement, waterglass, water-granulated slag, soda ash In at least two kinds composition;The silica sand is river sand, artificial sand, mountain sand, wind collection sand.
Wherein, the quick lime is the new fresh lime containing active CaO >=70%, MgO≤5%;Cement is P.O42.5R water Mud, i.e. Portland cement.
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, be composed of the following raw materials by weight:
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, be composed of the following raw materials by weight:
Further, as preferred technical scheme, aggregate described above is preferably the flying dust after waste incineration.According to 《National Hazard waste register》In definition on danger, the flying dust after waste incineration belongs to environmental improvement industry, waste generation Code is 802-002-18, and its hazard property belongs to T (Toxicity) class, is virose class discarded object.According to pertinent literature Report:Flying dust is that flying dust is typically in canescence or Dark grey, and particle diameter is small in thin particulate matter obtained by flue gas purification system collection In 300 μm, most of is 1.0 μm~30 μm, moisture content 10%~23%, clinker ignition loss 34%~51%, easy frost heave, hardly possible pressure It is real, being in bar-shaped, flocculence particle shape, the irregular shape such as spherical, flyash ingredient is complicated, mainly contains CaO, SiO more2、 Na2O、SO3、K2O、Fe2O3、Al2O3, MgO, wherein, CaO mass fraction highests, are 20.4%~37.9%, secondly be SO3、 SiO2;Main harm material is heavy metal (Hg, Cu, Zn, Pb, Cd, Ni, Cr etc.) and bioxin;The quality of chlorine in flying ash Fraction is high, reaches as high as 15%, wherein the ratio that solvable chlorine accounts for total chlorine is 40.6%~83.9%.
Further, as preferred technical scheme, prepared by the flying dust or slag described above with after consumer waste incineration Building brick, the cementitious matter by weight percentage, preferably by quick lime:Quartz sand:Flyash=80:10:10 compositions;It is described Alkali-activator by weight percentage, preferably by cement:Water-granulated slag=70:30 compositions.
Second technical problem to be solved by this invention is to provide a kind of flying dust or slag system with after consumer waste incineration The method of standby building brick.
Wherein, the preparation method of described building brick, comprises the following steps:
A, raw material prepare:Each component dispensing is weighed by the predetermined weight part composition of building brick;And wherein will wear into cementitious matter Fine powder so that more than 95% fine powder particle diameter≤0.08mm;Slag after consumer waste incineration should be sorted, crushed, being classified to reach to use and want Ask;
B, add water and clear up:By the ready raw material of a steps, the stirring that added water in biaxial rneader is mixed into uniform wet thing Material, into slaking silos in absorb water and clear up;
C, pressing unfired brick:The wet stock come out from slaking silos is added water stirring and is mixed into molding mass, brick machine is re-fed into It is pressed into adobe;
D, maintenance:The adobe that step c is obtained is conserved in the still kettle of gauge pressure >=1.5MPa saturated vapor, produces steaming Press brick;Wherein, 200 DEG C of saturated vapor curing temperature >, curing time is 6~9h.
Further, the preparation method of building brick described above, wherein, the pressure of saturated vapor pressure in Step d still kettle Preferably 1.5~2.0MPa, saturated vapor curing temperature is preferably 200~215 DEG C.
In order to obtain the brick that can better meet performance requirement for building, heretofore described building brick is preferably steam pressure wall Body brick and floor tile.
The embodiment of the present invention is further described with reference to embodiment, not therefore by present invention limit System is among described scope of embodiments.
Embodiment 1
1st, prepared by steam-pressing brisk
A, raw material prepare:By 1~4 group of each component feed proportioning of numbering in table 1, each component is weighed, and will wherein cementitious matter Wear into fine powder so that more than 95% fine powder particle diameter≤0.08mm;Slag after consumer waste incineration should sort, crush, be classified up to making With requiring;
B, add water and clear up:By the ready raw material of a steps, the stirring that added water in biaxial rneader is mixed into uniform wet thing Material, into slaking silos in absorb water and clear up;
C, pressing unfired brick:The wet stock come out from slaking silos is added water stirring and is mixed into molding mass, brick machine is re-fed into It is pressed into adobe;
D, maintenance:The adobe that step c is obtained is conserved in the still kettle of gauge pressure >=1.5MPa saturated vapor, produces steaming Press wall body brick or floor tile;Wherein, 200 DEG C of saturated vapor curing temperature >, curing time is 6~9h.
Each component composition and its proportioning in the embodiment of table 1
2nd, the pollutant toxicity leaching value of steam-pressing brisk solidification and stabilization product
The malicious leaching test method of steam pressure Wall or floor tile prepared by the step of with the embodiment of the present invention according to《Solid waste is leached Toxicity leaching method hac buffer method》(HJ/T300-2007) carry out, the harmful element concentration leached in brick with GB16889-2008《Household refuse landfill sites contamination control standard》Standard requirement compare, leaching the results are shown in Table shown in 2:
The pollutant toxicity leaching concentration value of the building brick solidification and stabilization product of table 2
(unit mg/L)
It can be seen from the data in Table 2 that the pollutant toxicity of building brick solidification and stabilization product prepared by the present invention is leached Concentration value is below《Household refuse landfill sites contamination control standard》(GB16889-2008) standard requirement, is to meet for building The security performance requirement of brick.
3rd, building brick performance test
The building brick prepared with technical scheme of the embodiment of the present invention, is tested, it tests knot by intensity, brick weight and frost resistance Fruit is shown in Table 3:
The building brick intensity of table 3, brick weight and frost resistance test result
Found by the performance test of the brick to being prepared in embodiment:Steam-pressing brisk pressure resistance prepared by technical solution of the present invention Degree is high, and steam-pressing brisk average weight is slightly weighed than common brick weight, its frost resistance test passes, with preferable physical chemistry Energy and durability, are to be used for industry and the preferable novel wall material of civil buildings and pavement material.

Claims (6)

1. the building brick prepared with the flying dust after consumer waste incineration or slag, it is characterised in that:It is composed of the following raw materials by weight:
Wherein, the aggregate is at least one of the flying dust after waste incineration, slag;The cementitious matter by weight percentage, by giving birth to Lime:Quartz sand:Flyash=80:10:10 compositions;The alkali-activator by weight percentage, by cement:Water-granulated slag= 70:30 compositions;The silica sand is river sand, artificial sand, mountain sand, wind collection sand;
The preparation method of described building brick comprises the following steps:
A, raw material prepare:Each component dispensing is weighed by the predetermined weight part composition of building brick;And wherein will wear into fine powder by cementitious matter, So that more than 95% fine powder particle diameter≤0.08mm;Slag after consumer waste incineration should be sorted, crushed, being classified up to use requirement;
B, add water and clear up:By the ready raw material of a steps, the stirring that added water in biaxial rneader is mixed into uniform wet stock, Water suction is cleared up in into slaking silos;
C, pressing unfired brick:The wet stock come out from slaking silos is added water stirring and is mixed into molding mass, brick machine compacting is re-fed into Into adobe;
D, maintenance:The adobe that step c is obtained is conserved in the still kettle of gauge pressure >=1.5MPa saturated vapor, produces steam pressure Brick;Wherein, saturated vapor curing temperature >=200 DEG C, curing time is 6~9h.
2. the building brick prepared according to claim 1 with the flying dust after consumer waste incineration or slag, it is characterised in that:By with Lower raw material composition:
3. the building brick prepared according to claim 1 with the flying dust after consumer waste incineration or slag, it is characterised in that:By with Lower raw material composition:
4. the building brick prepared according to any one of claims 1 to 3 flying dust or slag with after consumer waste incineration, its feature It is:The aggregate is the flying dust after waste incineration.
5. the preparation method of the building brick described in any one of Claims 1 to 4, it is characterised in that:Comprise the following steps:
A, raw material prepare:Each component dispensing is weighed by the predetermined weight part composition of building brick;And wherein will wear into fine powder by cementitious matter, So that more than 95% fine powder particle diameter≤0.08mm;Slag after consumer waste incineration should be sorted, crushed, being classified up to use requirement;
B, add water and clear up:By the ready raw material of a steps, the stirring that added water in biaxial rneader is mixed into uniform wet stock, Water suction is cleared up in into slaking silos;
C, pressing unfired brick:The wet stock come out from slaking silos is added water stirring and is mixed into molding mass, brick machine compacting is re-fed into Into adobe;
D, maintenance:The adobe that step c is obtained is conserved in the still kettle of gauge pressure >=1.5MPa saturated vapor, produces steam pressure Brick;Wherein, saturated vapor curing temperature >=200 DEG C, curing time is 6~9h.
6. the preparation method of building brick according to claim 5, it is characterised in that:Saturated vapor in the Step d still kettle The pressure of pressure is 1.5~2.0MPa, and saturated vapor curing temperature is 200~215 DEG C.
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