CN104676595A - Method for lowering quantity and toxicity of flying ash of household garbage incineration plant - Google Patents

Method for lowering quantity and toxicity of flying ash of household garbage incineration plant Download PDF

Info

Publication number
CN104676595A
CN104676595A CN201510003910.XA CN201510003910A CN104676595A CN 104676595 A CN104676595 A CN 104676595A CN 201510003910 A CN201510003910 A CN 201510003910A CN 104676595 A CN104676595 A CN 104676595A
Authority
CN
China
Prior art keywords
flying dust
cream
toxicity
solid waste
municipal solid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510003910.XA
Other languages
Chinese (zh)
Other versions
CN104676595B (en
Inventor
楼紫阳
张海英
赵由才
李安定
朱南文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Jiaotong University
Original Assignee
Shanghai Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CN201510003910.XA priority Critical patent/CN104676595B/en
Publication of CN104676595A publication Critical patent/CN104676595A/en
Application granted granted Critical
Publication of CN104676595B publication Critical patent/CN104676595B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/30—Solid combustion residues, e.g. bottom or flyash
    • 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
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Processing Of Solid Wastes (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)

Abstract

A method for lowering the quantity and toxicity of the flying ash of a household garbage incineration plant is characterized by including the steps of firstly, mixing cream-colored mud and existing flying ash of the household garbage incineration plant according to a certain proportion, smashing to reach a certain particle size, mixing with fine grinding media according a certain proportion, and performing fine grinding with a stirring ball mill; secondly, pressing the finely-ground flying ash and cream-colored mud into cylindrical samples under certain pressure; thirdly, during household garbage incineration, putting the samples into an incineration hearth at a certain speed, and fully utilizing the waste heat generated by the incineration to perform fast mullite reaction so as to allow generated substances containing mullite to settle to a slag system, to lower the flying ash quantity during the incineration to 40% of the original quantity, and to reduce heavy metal contents in the flying ash. The method has the advantages that the temperature of a household garbage incineration furnace is fully utilized, the method is simple in process, low in cost and free of pollution, subsequent flying ash processing cost and difficulty are lowered, and good economic and social benefits are achieved.

Description

A kind of method reducing municipal solid waste incinerator flying dust amount and flying dust toxicity
Technical field
The present invention relates to the process of solid waste, be specifically related to a kind of method reducing municipal solid waste incinerator flying dust amount and flying dust toxicity, belong to environmental technology field.
Background technology
Along with the sharply increase of China's house refuse amount, Consideration of MSW Incineration Technology obtains tremendous development in China, and end 2013, the burning amount of China's house refuse reaches more than 23% of house refuse total amount.While significantly reducing house refuse quality and capacity, burn and also produced the flying dust being less than waste incineration amount about 5%, and owing to containing the toxic heavy metal elements such as Pb, Cr, Cd, As in flying dust, according to statistics, in rubbish, the Sb of the Pb of nearly 33%, the Cd of 92% and 45% moves in flying dust, flying dust is also containing extremely toxic substances such as Bu Fen bioxin simultaneously, therefore make flying dust classify as the 802-002-18 in hazardous waste HW18 incineration disposal residue in China, need to enter danger waste landfill site and dispose.
Before entering landfill yard, flying dust generally carries out pretreatment by curing/stabilizing technology and high-temperature process etc., and the former comprises cement solidification, bitumen solidification, chemical agent stabilisation etc., and the latter comprises sintering and melting/vitrifying etc.Solidification processing procedure is a kind of stabilization method utilizing the material with gelatification to change flying dust engineering characteristic, modal is cement-based material curing, be characterized in that process equipment is simple, easy to operate, material source is wide, cost is low, cured product intensity is high, but curing/stabilizing process can make ultimate waste disposal volume increase simultaneously, for example the volume of general cured product increases by 0.5 ~ 1 times than the volume of refuse before process, and the mechanical strength of cured product is poor, firming body after solidifying/stablizing may be broken in external force or unsuitable processing procedure, thus cause Leaching of Heavy Metals, potential hazard is caused to environment, in addition, although curing/stabilizing technology can by heavy metal stable curing within the regular hour, it can not eliminate the pollution of dioxin.It is flying dust is heated to melt temperature (1200 ~ 1400 DEG C) that melting is separated, after melting, lower boiling heavy metal and salt will be evaporated to gas phase, collected by exhaust dust-precipitating system, the heavy metal of difficult volatilization class because of density large, a part sinks to the bottom of smelting furnace and separation and recovery utilizes; Another part then residues in slag.Simple fusing fly ash technology has and certain subtracts appearance solidification effect, but because the hardness, hot property etc. of vitreous material is poor, limit its application in fields such as construction materials, therefore usually can only be used for roadbed material, cement concrete composite material or again send into landfill yard landfill, its added value is lower.Can produce a small amount of high concentration melting furnace flying dust (concentration of itself Cd and Pb is 5-10 times before melting) in melting process, the expense of fusing fly ash is also very high.
Generally speaking, above-mentioned processing method all needs additionally to add medicament, and need by the processing mode such as increasing temperature outward, financial cost do not have competitiveness, therefore in burning process, how to reduce the output of incineration plant flying dust, or change the component of flying dust itself, reduce its content of beary metal, become the important key point that incineration process of domestic garbage controls.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of method reducing municipal solid waste incinerator flying dust amount and flying dust toxicity is provided, make the quantum of output of incineration plant flying dust be reduced to about 40% of the quantum of output of original processing method, and reduce the content of beary metal in flying dust, reduce toxicity.
The present invention is achieved by the following technical solutions:
Reduce a method for municipal solid waste incinerator flying dust amount and flying dust toxicity, it comprises the following steps:
Step one, with cream-coloured mud and existing municipal solid waste incinerator flying dust for raw material, is crushed to certain particle size, mixes according to a certain percentage, then mix with grinding media and water with certain proportioning, carry out fine grinding with agitating ball mill;
Step 2, is pressed into cylindrical sample under a certain pressure by the flying dust after levigate and cream-coloured mud;
Step 3, in the burning process of house refuse, being put into by given pace by obtained sample burns in burner hearth, make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 40% of original situation, and reduces the content of beary metal produced in flying dust.
Further, in described step one, described flying dust normally burns produced flying dust for house refuse; Described cream-coloured mud is a kind of potter's clay of ecru, and its main mineralogical composition is quartz, illite and kaolinite.
Further, in described step one, the described certain particle size that is crushed to refers to, the mixture of flying dust and cream-coloured mud is crushed to 0.1-1mm granularity.
Further, in described step one, the mass mixing ratio of flying dust and cream-coloured mud is, flying dust: cream-coloured mud=40-60:60-40.
Further, in described step one, the mixture of grinding media and flying dust and cream-coloured mud and the quality ratio range of water are: grinding media: mixed flying dust/cream-coloured mud: water=5 ~ 8:0.5 ~ 2:1.
Further, in described step one, after fine grinding in material, the quality accounting of the particle of granularity≤100 μm is more than 50%.
Further, in described step one, described grinding media is corundum bead.
Further, in described step 2, the pressure limit of suppressing described sample is 20-100MPa.
Further, in described step 3, described obtained sample is put into burn in burner hearth by given pace refer to, 0.5% of the input amount≤garbage treatment quantity of described sample, is advisable not affect fire box temperature.
The present invention makes full use of the characteristic of flying dust and cream-coloured mud, CaO, SiO of high-load in flying dust component 2, Al 2o 3and the metal oxide such as a small amount of Fe, Mg, K, Na has good facilitation to mullite reaction, and the main mineralogical composition of cream-coloured mud be quartzy (SiO 2), illite (K (Al, Fe, Mg) (Si, Al) 4o 10(OH) 2) and kaolinite (Al 2si 2o 5(OH) 4), because having stronger plasticity containing kaolinite and illite, plasticity index >7, belongs to medium plastic material, it add the plasticity can improving batching largely.By generation following decomposition and oxidation stage and chemosynthesis reaction, wherein in 300 DEG C-(850 ~ 900 DEG C) scope, reaction is as follows there is in both in different temperature ranges:
Al 2o 32SiO 22H 2o (kaolinite) → Al 2o 32SiO 2(metakaolinite)+2H 2o (500 ~ 600 DEG C) .... (1)
gCO 3→MgO+CO 2↑ (500～860℃) (2)
MgCO 3·CaCO 3→MgO+CaO+CO 2↑ (730～950℃) (3)
CaCO 3→ CaO+CO 2↑ (being greater than 825 DEG C) (4)
4FeCO 3→2Fe 2O 3+3CO 2↑ (800℃～1,000℃) (5)
MgCO 3→ MgO+SO 3↑ (being greater than 900 DEG C) (6)
And between 850 ~ 900 DEG C, then the combination reaction that main generation is following, oxidation and decomposition reaction, carrying out new crystalline phase appearance and occurring vitrification phenomenon along with combination reaction, along with temperature continues to raise, Al-Si spinelle is converted into mullite.Main chemical reactions is as follows:
2 (Al 2o 32SiO 2) → 2Al 2o 33SiO 2(sial spinelle)+SiO 2(7)
2Al 2o 33SiO 2→ 2 (Al 2o 3siO 2) (mullite of transition)+SiO 2(cristobalite) (8)
3Al 2o 3+ 2SiO 2→ 3Al 2o 32SiO 2(mullite) (9)
3 (Al 2o 32SiO 2) → 3Al 2o 32SiO 2(mullite)+SiO 2(cristobalite) (10)
Al in flying dust 2o 3with SiO 2at high temperature, can there is combination reaction formation mullite (3Al in them 2o 32SiO 2), with not molten remaining SiO 2form the skeleton of porcelain base, make goods have higher mechanical strength.In addition, part SiO 2fuse among liquid phase, liquid phase viscosity also can be made to raise, increase the ability of goods resistance to deformation; Al 2o 3fuse into the physical property that liquid phase also can improve goods, between the firing zone that it can also expand base substrate.
The content of CaO in flying dust up to 35.8%, its existence form mainly CaCO 3, Ca (OH) 2, CaSO 4and a small amount of CaO.CaCO 3, Ca (OH) 2, CaSO 4can decompose more than 500 DEG C produce CaO, CaO in sintering process can with SiO 2reaction generates the very large Ca of intensity 3si 2o 7or CaSiO 4, thus strengthen the compression strength of goods.In addition the CaCl in flying dust is present in 2and the Ca in other salt 2+or network improvement ion, it can destroy firmly Si – O and Al – O key, and final formed stablize, high-strength silicate or calcium aluminium silicate, thus reduce the sintering temperature of goods.
Fe in flying dust 2o 3play a part to reduce fusing point in burning till, it can reduce the temperature that liquid appears in goods in sintering process, particle is just bonded together at a lower temperature closely, burns till the mechanical strength of product under improving low temperature.
MgO can react with cristobalite and form enstatite (MgSiO 3), thus promote the formation of mullite, a large amount of MgSiO 3formation also can improve the mechanical strength of goods.But Mg is mainly present in MgCl in flying dust 2and in silicate, the mainly Mg played a role in ceramic post sintering process 2+, it and Ca 2+similar is also a kind of network activating ion, can destroy Si – O key, the final silicate forming Mg.Therefore not only can not change the outward appearance of goods because introducing a small amount of MgO adding of flying dust, the sintering temperature reducing goods can be helped on the contrary.
Na, K in flying dust mainly exist with the form of NaCl, KCl and feldspar, and they are the alkali metal ions enlivened very much, and the Si that can replace in sintering process in Cristobalitkristall forms glassy phase, thus reduces the formation temperature of mullite.
Compared with prior art, what the present invention utilized is the melting again that the temperature of incinerator burner hearth itself realizes flying dust, reacted by the mullite of flying dust and cream-coloured mud, realize the sedimentation of fixing and flying dust of flying dust detoxification, heavy metal, thus reach the requirement of flying dust decrement and toxicity reduction.
Advantage of the present invention mainly contains:
(1) flying dust that the raw material that the present invention utilizes is municipal solid waste incinerator, belong to hazardous waste, the ecological environment not only substantially improving incineration plant is recycled to these unmanageable solid waste, also reclaim the useful component that make use of wherein, turn waste into wealth, have good environmental benefit and social benefit.
(2) the present invention is by adding cream-coloured mud, make it reaction in incinerator burner hearth and generate mullite reaction, take full advantage of incineration plant fire box temperature, compared with traditional mullite production technology, greatly reduce mullite reaction temperature required, this technological process is simple, easily controls, equipment is simple, and operating cost is few.
(3) change of technique of the present invention to raw material is insensitive, to flying dust and cream-coloured mud ratio requirement comparatively wide in range, the flying dust of most incineration plant can be processed.
(4), in the mullite course of reaction that the present invention generates, the heavy metal of rubbish process volatilization will be trapped, thus effectively reduce the flying dust amount of follow-up generation.
Compared with the Chinese patent " the cyclone furnace high-temperature fusion processing method of incineration of refuse flyash " being CN 1259525C with publication number, the present invention makes full use of incineration plant incinerator itself and burns the heat of release, do not need additionally to arrange cyclone furnace, have employed cream-coloured mud to react, cost is low, and absorption plant is few, the self-loopa of on-site pollutant process effectively can be realized, efficient energy-saving more.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Fig. 2 is that the present invention generates the reacted XRD figure of mullite.
Fig. 3 is the DTA-TGA collection of illustrative plates (not having admixture flying dust) of incineration plant flying dust.
Fig. 4 is the DTA-TGA collection of illustrative plates of 50% flying dust addition.
Detailed description of the invention
The present invention is applicable to the minimizing to garbage burning factory flying dust, utilize the high temperature action of rubbish burner hearth, flying dust and cream-coloured mud generation mullite are reacted, thus reduce the flying dust amount of unit mass waste incineration generation, reduce content of beary metal in flying dust, there is efficiency high, low cost and other advantages, thus improve economic benefit and social benefit.
Refer to Fig. 1, the method for the invention comprises the following steps:
Step one, with the flying dust of cream-coloured mud and existing municipal solid waste incinerator for raw material, according to flying dust: the quality proportioning of cream-coloured mud=40-60:60-40 mixes, be crushed to 0.1-1mm granularity, again according to grinding media: mixed flying dust/cream-coloured mud: water quality ratio is 5 ~ 8:0.5 ~ 2:1 mixing, carry out fine grinding with agitating ball mill, after fine grinding in material, the quality accounting of the particle of granularity≤100 μm is more than 50%;
Described flying dust normally burns produced flying dust for house refuse; Described cream-coloured mud is a kind of potter's clay of ecru, and its main mineralogical composition is quartz (SiO 2), illite (K (Al, Fe, Mg) (Si, Al) 4o 10(OH) 2) and kaolinite (Al 2si 2o 5(OH) 4); Described grinding media is corundum bead.
Step 2, makes cylindrical sample by the flying dust after levigate and cream-coloured mud at the pressure that scope is 20-100MPa;
Step 3, in the burning process of house refuse, puts into obtained sample by given pace and burns in burner hearth, and 0.5% of the input amount≤garbage treatment quantity of described sample, is advisable not affect fire box temperature; Make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 40% of original situation, and reduces the content of beary metal produced in flying dust.
Below in conjunction with embodiment, the present invention is described in detail.Following embodiment is premised on technical scheme of the present invention; give detailed embodiment and concrete operating process; but protection scope of the present invention is not limited to following embodiment; for persons skilled in the art; not deviating from any apparent change done under technical solution of the present invention prerequisite, all belong to the protection domain of the claims in the present invention.
Embodiment 1
Step one, normally burn produced flying dust for raw material with cream-coloured mud and certain municipal solid waste incinerator, this cream-coloured mud is a kind of potter's clay of ecru, and its main mineralogical composition is quartz (SiO 2), illite (K (Al, Fe, Mg) (Si, Al) 4o 10(OH) 2) and kaolinite (Al 2si 2o 5(OH) 4).
According to flying dust: the quality proportioning of cream-coloured mud=40:60 mixes, and is crushed to 0.1mm granularity.
Again with grinding media: the mixture of flying dust and cream-coloured mud: three mixes by the quality proportioning of water=5:0.5:1, carries out fine grinding with agitating ball mill, this grinding media is corundum bead.After fine grinding in material, the quality accounting of the particle of granularity≤100 μm is 50%.
Step 2, makes cylindrical sample by the flying dust after levigate and cream-coloured mud at the pressure of 20MPa.
Step 3, in the burning process of house refuse, put into by given pace by obtained sample and burn in burner hearth, the input amount of described sample is 0.5% of garbage treatment quantity, is advisable not affect fire box temperature.
Make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 40% of original situation, and reduces the content of beary metal produced in flying dust.
Embodiment 2
Step one, normally burns produced flying dust for raw material with cream-coloured mud and certain municipal solid waste incinerator, and the main mineral constituent of this cream-coloured mud is quartz, illite and kaolinite.
According to flying dust: the quality proportioning of cream-coloured mud=50:50 mixes, and is crushed to 0.5mm granularity.
Again with corundum bead for grinding media, with grinding media: the mixture of flying dust and cream-coloured mud: three mixes by the quality proportioning of water=6.5:1.2:1, carries out fine grinding with agitating ball mill; After fine grinding in material, the quality accounting of the particle of granularity≤100 μm is 60%.
Step 2, makes cylindrical sample by the flying dust after levigate and cream-coloured mud at the pressure that scope is 60MPa.
Step 3, in the burning process of house refuse, put into by given pace by obtained sample and burn in burner hearth, the input amount of described sample is 0.4% of garbage treatment quantity, is advisable not affect fire box temperature.
Make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 30% of original situation, and reduces the content of beary metal produced in flying dust.
Embodiment 3
Step one, normally burn produced flying dust for raw material with cream-coloured mud and certain municipal solid waste incinerator, this cream-coloured mud is a kind of potter's clay of ecru, and its main mineralogical composition is quartz, illite and kaolinite.
According to flying dust: the quality proportioning of cream-coloured mud=60:40 mixes, and is crushed to 1mm granularity.
Again with corundum bead for grinding media, with grinding media: the mixture of flying dust and cream-coloured mud: three mixes with grinding media by the quality proportioning of water=8:2:1, carries out fine grinding with agitating ball mill.After fine grinding in material, the quality accounting of granularity≤100 μm particle is 70%.
Step 2, makes cylindrical sample by the flying dust after levigate and cream-coloured mud at the pressure that scope is 100MPa.
Step 3, in the burning process of house refuse, put into by given pace by obtained sample and burn in burner hearth, the input amount of described sample is 0.3% of garbage treatment quantity, is advisable not affect fire box temperature.
Make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 20% of original situation, and reduces the content of beary metal produced in flying dust.
Embodiment 4
With certain Municipal Solid Waste Incineration Plant flying dust for raw material, its chemical composition is as table 1, and the chemical analysis of cream-coloured stone is in table 2.Add different flying dust amounts, compacting material adds water stirring after grinding in mixer, and amount of water should remain on about 5 ~ 8%, then quietly under suitable temperature, humidity environment stops its ageing of one to two angel.Material after ageing is after sieve, and object promotes the homogenizing of material and the formation of micelle.Ageing sieve after blank, forming machine carries out pressure forming, dry burnt product, the TGA figure of the mullite process wherein generated is shown in Fig. 3 and 4.
The main chemical compositions (%) of table 1 garbage flying ash
The main chemical compositions of the cream-coloured mud of table 2
(1) reaction temperature
Being 50% and 0% two kind of situation by comparing flying dust addition content, can finding out after adding flying dust, between the best firing zone of mullite, 850-956 DEG C can be reduced to afterwards from 1127 DEG C that start.
(2) flying dust generates the Leaching difference of front and back:
The horizontal leaching test result (mg/L) of table 3 garbage flying ash heavy metal
* limit represents that measurement result exceeds standard
The effective leaching test result (mg/Kg) of table 4 garbage flying ash heavy metal
* represent that measurement result exceeds standard
(3) flying dust amount
Before not adopting the technology of the present invention, flying dust amount is approximately into stove rubbish 3.1%, and after adopting the present invention, flying dust amount is into stove rubbish 1.87%, and flying dust amount reduces about 40%.

Claims (9)

1. reduce a method for municipal solid waste incinerator flying dust amount and flying dust toxicity, it is characterized in that: comprise the following steps:
Step one, with cream-coloured mud and existing municipal solid waste incinerator flying dust for raw material, is crushed to certain particle size, mixes according to a certain percentage, then mix with grinding media and water with certain proportioning, carry out fine grinding with agitating ball mill;
Step 2, is pressed into cylindrical sample under a certain pressure by the flying dust after levigate and cream-coloured mud;
Step 3, in the burning process of house refuse, being put into by given pace by obtained sample burns in burner hearth, make full use of the waste heat burning and produce, carry out mullite reaction fast, what make generation is deposited to slag system containing mullite material, finally makes the flying dust amount of burning process be reduced to 40% of original situation, and reduces the content of beary metal produced in flying dust.
2. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step one, and described flying dust normally burns produced flying dust for house refuse; Described cream-coloured mud is a kind of potter's clay of ecru, and its main mineralogical composition is quartz, illite and kaolinite.
3. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step one, and the described certain particle size that is crushed to refers to, the mixture of flying dust and cream-coloured mud is crushed to 0.1-1mm granularity.
4. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step one, and the mass mixing ratio of flying dust and cream-coloured mud is, flying dust: cream-coloured mud=40-60:60-40.
5. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, it is characterized in that: in described step one, the mixture of grinding media and flying dust and cream-coloured mud and the quality ratio range of water are: grinding media: mixed flying dust/cream-coloured mud: water=5 ~ 8:0.5 ~ 2:1.
6. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step one, and after fine grinding in material, the quality accounting of the particle of granularity≤100 μm is more than 50%.
7. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step one, and described grinding media is corundum bead.
8. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, is characterized in that: in described step 2, and the pressure limit of suppressing described sample is 20-100MPa.
9. the method for reduction municipal solid waste incinerator flying dust amount according to claim 1 and flying dust toxicity, it is characterized in that: in described step 3, described being put in burning burner hearth by given pace by obtained sample refers to, 0.5% of the input amount≤garbage treatment quantity of described sample, is advisable not affect fire box temperature.
CN201510003910.XA 2015-01-06 2015-01-06 Method for lowering quantity and toxicity of flying ash of household garbage incineration plant Active CN104676595B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510003910.XA CN104676595B (en) 2015-01-06 2015-01-06 Method for lowering quantity and toxicity of flying ash of household garbage incineration plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510003910.XA CN104676595B (en) 2015-01-06 2015-01-06 Method for lowering quantity and toxicity of flying ash of household garbage incineration plant

Publications (2)

Publication Number Publication Date
CN104676595A true CN104676595A (en) 2015-06-03
CN104676595B CN104676595B (en) 2017-02-22

Family

ID=53311992

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510003910.XA Active CN104676595B (en) 2015-01-06 2015-01-06 Method for lowering quantity and toxicity of flying ash of household garbage incineration plant

Country Status (1)

Country Link
CN (1) CN104676595B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110631021A (en) * 2018-06-22 2019-12-31 汤广武 Safe treatment method of fly ash
CN115138022A (en) * 2022-06-08 2022-10-04 上海大学 Dechlorination method for household garbage incineration fly ash

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810745A (en) * 1994-07-05 1996-01-16 Haruo Unno Regenerating method of waste materials, such as soil materials, and regenerated materials
JPH09108646A (en) * 1995-10-18 1997-04-28 Kanegafuchi Chem Ind Co Ltd Treatment of waste and waste treating material
CN1259525C (en) * 2004-12-30 2006-06-14 哈尔滨工业大学 Method of processing refuse burning fly ash through cyclone furnace high temperature melting
CN101725993B (en) * 2008-10-29 2012-12-26 映诚股份有限公司 Method for treating incinerated fly ash with harmful heavy metals
CN101890424B (en) * 2010-07-16 2012-08-22 重庆瑞帆再生资源开发有限公司 Method for harmlessly treating trash flying ash by adopting trash-burning process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110631021A (en) * 2018-06-22 2019-12-31 汤广武 Safe treatment method of fly ash
CN110631021B (en) * 2018-06-22 2021-07-06 汤广武 Safe treatment method of fly ash
CN115138022A (en) * 2022-06-08 2022-10-04 上海大学 Dechlorination method for household garbage incineration fly ash
CN115138022B (en) * 2022-06-08 2024-01-16 上海大学 Method for dechlorinating fly ash from incineration of household garbage

Also Published As

Publication number Publication date
CN104676595B (en) 2017-02-22

Similar Documents

Publication Publication Date Title
Dondi et al. Lightweight aggregates from waste materials: Reappraisal of expansion behavior and prediction schemes for bloating
Monich et al. Porous glass-ceramics from alkali activation and sinter-crystallization of mixtures of waste glass and residues from plasma processing of municipal solid waste
Boltakova et al. Utilization of inorganic industrial wastes in producing construction ceramics. Review of Russian experience for the years 2000–2015
El-Mahllawy Characteristics of acid resisting bricks made from quarry residues and waste steel slag
Bethanis et al. Properties and microstructure of sintered incinerator bottom ash
Lemougna et al. Utilisation of glass wool waste and mine tailings in high performance building ceramics
Chindaprasirt et al. Synergistic effect of fly ash and glass cullet additive on properties of fire clay bricks
Andreola et al. The possibility to recycle solid residues of the municipal waste incineration into a ceramic tile body
JP2002003248A (en) Method of manufacturing artificial aggregate by using municipal refuse incinerator ash
Furlani et al. Preparation and characterization of sintered ceramics made with spent foundry olivine sand and clay
Pinatti et al. Incorporation of the ash from cellulignin into vitrified ceramic tiles
CN100491096C (en) Method for preparing veneer brick using fly ash
CN114751766A (en) Light ceramsite fired by solid waste and method thereof
WO2016011668A1 (en) Method for producing ceramic tiles using coal combustion waste
Lin et al. Characterizations of temperature effects on sintered ceramics manufactured with waste foundry sand and clay
Cechin et al. Ceramics composites from iron ore tailings and blast furnace slag
Ketov et al. Amorphous silica wastes for reusing in highly porous ceramics
Mao et al. A comparison study of three fluxing agents in promoting properties and environmental safety of bricks incorporating hazardous waste
JPH10152356A (en) Artificial lightweight aggregate and its production
Ibrahim et al. Sustainable zeolitic tuff incorporating tea waste fired ceramic bricks: Development and investigation
JP2000302498A (en) Production of artificial light-weight aggregate and artificial light-weight aggregate produced thereby
CN104676595B (en) Method for lowering quantity and toxicity of flying ash of household garbage incineration plant
Yu et al. Conversion of recycled sludge waste into high value-added ceramics as engineering construction materials: Fabrication, characterization and performance evaluation
KR101336173B1 (en) Permeable eco-friendly special tile and manufacturing method of it
Devaraj et al. Glass‐Ceramic Tiles Prepared by Pressing and Sintering DC Plasma‐Vitrified Air Pollution Control Residues

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant