CN102320855B - Harmless treatment method for garbage incinerating fly ash and product produced in harmless treatment method - Google Patents
Harmless treatment method for garbage incinerating fly ash and product produced in harmless treatment method Download PDFInfo
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- CN102320855B CN102320855B CN2011101554665A CN201110155466A CN102320855B CN 102320855 B CN102320855 B CN 102320855B CN 2011101554665 A CN2011101554665 A CN 2011101554665A CN 201110155466 A CN201110155466 A CN 201110155466A CN 102320855 B CN102320855 B CN 102320855B
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- mud
- incineration
- haydite
- harmless treatment
- refuse flyash
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Abstract
The invention discloses a harmless treatment method for garbage incinerating fly ash and a product produced in the harmless treatment method. The garbage incinerating fly ash is mixed into silt and sludge for being prepared into granular shapes and subjected to high-temperature expanded sintering to form the product ceramsite. By adopting the method, harmful substances can be decomposed, the emission of harmful gas can be reduced to the maximum and harmless treatment is realized. The product produced in the harmless treatment method, namely the ceramsite, is an energy-saving construction basic material, wherein the high-strength ceramsite can be used for producing a concrete member below C40; common ceramsite can be used for producing a hollow building block instead of the current used stone; the urltralight ceramsite is used for manufacturing a heat preservation plate and a self-heat preservation wall; and the product has wide market and solves the problem of a landfill site. Accordingly, compared with the prior art, the treatment and recycling method disclosed by the invention can be used for carrying out harmless treatment on the garbage incinerating fly ash, has no residual ash slag after treatment, realizes complete recycling and is beneficial to environmental protection.
Description
Technical field
The present invention relates to the incineration of refuse flyash process field, specifically is the method for innocent treatment of incineration of refuse flyash and the product of handling gained.
Background technology
According to statistics, the about 13155T/d of burning city domestic garbage facility throughput in 2002 reached 48000T/d in 2010, if incineration of refuse flyash output is estimated generation incineration of refuse flyash 14.4 * 10 in 2002 by 3% of waste incineration amount
4T, China in 2010 the only incineration of refuse flyash that produces of domestic waste just reach 52 * 10
4T, the incineration of refuse flyash that rolls up every year have become the new difficult problem that city management faces.
Owing to contain the various heavy such as Cd, Pd, Cu, Zn and Cr that can be leached higher concentration in the incineration of refuse flyash, objectionable impurities such as Dioxins and dissolved salt, therefore classified as Hazardous wastes by the environmental administration of many countries, in China's " national Hazardous wastes register " also clearly the regulation domestic garbage incineration flyash belong to Hazardous wastes, incineration of refuse flyash must pass through certain processing, reduce after its danger, just can enter landfill yard and carry out security landfill, perhaps consider further to utilize.
The safe disposal mode of incineration of refuse flyash is a lot, and that generally adopts at present has four kinds: cement solidification, chemical agent solidifies, sour solvent extraction and melting and solidification etc.The environmental administration of developed countries such as the U.S., Germany and Japan praises highly the melting and solidification treatment technology most, because this technology not only can make the lime-ash decrement more than 2/3, alleviate the burden of landfill land used, can also reclaim the valuable metal in the lime-ash, decompose objectionable impuritiess such as Dioxins, so the melting and solidification treatment technology of incineration of refuse flyash has become one of focus of research.
Melting and solidification processing mode both domestic and external has all only been accomplished decrement and has not been accomplished really that refuse reclamation, the lime-ash after the processing also need to carry out landfill disposal, is unfavorable for environmental protection but up to now.
Summary of the invention
Main purpose of the present invention provides a kind of method for innocent treatment of incineration of refuse flyash, and it not only can carry out harmless treatment to incineration of refuse flyash, and does not remain lime-ash after handling, and realizes complete recycling, is beneficial to environmental protection.
Main purpose of the present invention provides a kind of product of harmless treatment gained of incineration of refuse flyash.
To achieve these goals, the present invention adopts following technical scheme:
The method for innocent treatment of incineration of refuse flyash, realize as follows:
One, places totally enclosed whipping device to stir an amount of mud, mud and incineration of refuse flyash, obtain the compound that is suitable for granulating;
Two, the compound of step 1 gained is made the saccharoid that particle diameter is 0.5-3.0cm;
Three, the saccharoid to the step 2 gained carries out surperficial plasticising;
Four, the saccharoid after step 3 plasticising is carried out preheating oven dry and 1200-1280 ℃ of high temperature sintering and expanding, obtain haydite.
In the above-mentioned steps one, the consumption of mud, mud and incineration of refuse flyash is respectively the 35-40wt% of compound, 30-35wt% and 25-30wt%.
In the above-mentioned steps one, mud adopts the mud that derives from river course, pond, reservoir or seabeach; Mud adopts the domestic sludge that derives from after treatment center of sewage is handled.
In the above-mentioned steps one, earlier mud and incineration of refuse flyash are mixed and added mud in 2-3 minute again and continue to stir 3-4 minute.
In the above-mentioned steps two, described saccharoid squeezes the grain machine by screw rod and makes.
In the above-mentioned steps three, described saccharoid carries out surperficial plasticising by the plasticising cylinder.
In the above-mentioned steps four, described preheating oven dry and high temperature sintering and expanding carry out in rotary kiln.
The product of the harmless treatment gained of incineration of refuse flyash contains following weight part material component: 35-40wt% mud, 30-35wt% mud and 25-30wt% incineration of refuse flyash.
Above-mentioned mud adopts the mud that derives from river course, pond, reservoir or seabeach; Above-mentioned mud adopts the domestic sludge that derives from after treatment center of sewage is handled.
After adopting such scheme, the method for innocent treatment of incineration of refuse flyash of the present invention, with incineration of refuse flyash be blended in make in mud and the mud granular, and carry out high temperature sintering and expanding, the objectionable impurities of incineration of refuse flyash and mud begins to decompose in the time of 900 ℃, the Dioxins rate of decomposition reaches 99.986% in the time of 1100 ℃, melt phase change occurs in 1130 ℃, when temperature reached 1250 ℃, objectionable impuritiess such as flying dust and mud had all obtained effective decomposition, minimizing discharge of harmful gases that again can maximum, bloated burning temperature of the present invention is chosen in 1200-1280 ℃, can decomposing harmful substances, minimizing discharge of harmful gases that again can maximum realizes harmless treatment.And, product-haydite of handling gained is the base mateiral of energy-saving building material, wherein high-strength ceramic granule can be produced the following concrete member of C40, replace the stone of use at present, ordinary ceramsite can be produced holllow building block, Superlight ceramsites is to make thermal insulation thermal insulation board and self-insulation wall material, and product has market widely, has solved the problem of landfill yard.Therefore, compared with prior art, treatment process of the present invention not only can be carried out harmless treatment to incineration of refuse flyash, and does not remain lime-ash after handling, and realizes complete recycling, is beneficial to environmental protection.
Embodiment
The method for innocent treatment of incineration of refuse flyash, realize as follows:
One, adopts closed automatic metering system an amount of mud, mud and the incineration of refuse flyash of weighing respectively, because the water ratio height of mud, and the water-intake rate of incineration of refuse flyash is good, earlier mud and incineration of refuse flyash are put into totally enclosed biaxial rneader mixing stirring 2-3 minute, the back added the mud restir 3-4 minute, utilize the good plasticity of mud, after fully stirring, the compound of the balling-up that obtains being suitable for granulating.In this compound, mud accounts for 35-40wt%, and mud accounts for 30-35wt%, and incineration of refuse flyash accounts for 25-30wt%; And the water ratio of mud and mud should be controlled and make compound can satisfy the needs of granulation balling-up.
Two, the compound of step 1 gained is transported to screw extrusion press with worm conveyor and granulates, obtain the haydite base substrate, the particle diameter control of this haydite base substrate is at 0.5-3.0cm.
Three, the haydite base substrate of step 2 gained is delivered to the plasticising cylinder with conveying belt and carry out the plasticising of haydite billet surface, haydite billet surface plasticity is improved reached to expand and burn the technical requirements of haydite; The plasticising cylinder is made long 4-5m with steel plate, diameter 0.8-1.0m, and rotating speed is adjustable.
Four, the haydite base substrate after step 3 plasticising is directly sent into rotary kiln with conveying belt and carry out preheating oven dry and expand that to burn temperature be 1200-1280 ℃ high temperature sintering and expanding, obtain haydite.Wherein, bloated preferred 1250 ℃ of the temperature of burning.
The product of the harmless treatment gained of incineration of refuse flyash of the present invention contains following weight part material component: 35-40wt% mud, 30-35wt% mud and 25-30wt% incineration of refuse flyash.
Among the present invention, mud adopts the mud that derives from river course, pond, reservoir or seabeach; Mud adopts the domestic sludge that derives from after treatment center of sewage is handled.
Verification test
One, the verification test of the incineration of refuse flyash before being untreated:
Detect unit: laboratory, Fujian Province bureau of geology and mineral resources Quanzhou
Detect foundation: water, waste water, waste residue analytical procedure the 4th edition
Testing environment: 26.5 degrees centigrade of detected temperatures, humidity 63%
Detected result is as follows: unit: mg/kg as a result
| Analyze numbering | 1100650 |
| Former number | 1# |
| Cu copper | 45.2 |
| Zn zinc | 142 |
| The Cd cadmium | 0.14 |
| Pb lead | 112 |
| The total chromium of TCr | 99 |
| The Cr sexavalent chrome | 46.2 |
| Hg mercury | 0.14 |
| Ni nickel | 13.7 |
| As arsenic | 9.45 |
| Ba barium | 142 |
| The Co cobalt | 2.13 |
| PH | 6.81 |
Two, adopt the radioassay result of the haydite foaming building blocks that processing product of the present invention (haydite) makes:
Claims (2)
1. the method for innocent treatment of incineration of refuse flyash is characterized in that: realize as follows:
One, adopts closed automatic metering system an amount of mud, mud and the incineration of refuse flyash of weighing respectively, earlier mud and incineration of refuse flyash are put into totally enclosed biaxial rneader mixing stirring 2-3 minute, the back added the mud restir 3-4 minute, the compound of the balling-up that obtains being suitable for granulating; In this compound, mud accounts for 35-40wt%, and mud accounts for 30-35wt%, and incineration of refuse flyash accounts for 25-30wt%; And the control of the water ratio of mud and mud makes compound can satisfy the needs of granulation balling-up;
Two, the compound of step 1 gained is transported to screw extrusion press with worm conveyor and granulates, obtain the haydite base substrate, the particle diameter control of this haydite base substrate is at 0.5-3.0cm;
Three, the haydite base substrate of step 2 gained is delivered to the plasticising cylinder with conveying belt and carry out the plasticising of haydite billet surface, haydite billet surface plasticity is improved reached to expand and burn the technical requirements of haydite; The plasticising cylinder is made with steel plate, long 4-5m, and diameter 0.8-1.0m, rotating speed is adjustable;
Four, the haydite base substrate after step 3 plasticising is directly sent into rotary kiln with conveying belt and carry out preheating oven dry and expand that to burn temperature be 1200-1280 ℃ high temperature sintering and expanding, obtain haydite.
2. the product of the method for innocent treatment gained of claim 1 incineration of refuse flyash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101554665A CN102320855B (en) | 2011-06-09 | 2011-06-09 | Harmless treatment method for garbage incinerating fly ash and product produced in harmless treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101554665A CN102320855B (en) | 2011-06-09 | 2011-06-09 | Harmless treatment method for garbage incinerating fly ash and product produced in harmless treatment method |
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| Publication Number | Publication Date |
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| CN102320855A CN102320855A (en) | 2012-01-18 |
| CN102320855B true CN102320855B (en) | 2013-09-25 |
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| CN2011101554665A Expired - Fee Related CN102320855B (en) | 2011-06-09 | 2011-06-09 | Harmless treatment method for garbage incinerating fly ash and product produced in harmless treatment method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941209A (en) * | 2012-11-07 | 2013-02-27 | 浙江理工大学 | Method for curing dredged sludge by doping incinerated bottom ash of domestic garbage |
| CN103183499A (en) * | 2013-03-12 | 2013-07-03 | 河海大学 | Mud brick fired by environment-friendly comprehensive utilization of wastes and preparation method thereof |
| CN111233505A (en) * | 2020-03-12 | 2020-06-05 | 山东省科学院新材料研究所 | Preparation method of waste incineration fly ash ceramsite |
| CN111848123A (en) * | 2020-07-15 | 2020-10-30 | 南京希捷环保科技有限公司 | Method for preparing ceramsite by burning solid wastes of fly ash and sludge in combined high temperature manner |
| CN116813369A (en) * | 2023-06-26 | 2023-09-29 | 溧阳中材环保有限公司 | Dangerous waste base high-strength lightweight aggregate and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830885A (en) * | 2006-03-20 | 2006-09-13 | 天津泰达环保有限公司 | Ceramicite using ash from incineration of refuse as raw material and its prodn. method |
| CN101081397A (en) * | 2006-06-01 | 2007-12-05 | 宜兴市张泽浇注耐火材料厂 | Permanent innocent treatment method of city life rubbish, industrial refuse and incineration fly ash |
| CN101817671A (en) * | 2010-02-09 | 2010-09-01 | 广州建材企业集团有限公司 | Method for burning fly ash by utilizing refuse in ceramsite production |
| CN101906297A (en) * | 2010-08-02 | 2010-12-08 | 中国地质大学（武汉） | Method for preparing film-coated ceramisite proppant by using oil shale wastes |
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- 2011-06-09 CN CN2011101554665A patent/CN102320855B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830885A (en) * | 2006-03-20 | 2006-09-13 | 天津泰达环保有限公司 | Ceramicite using ash from incineration of refuse as raw material and its prodn. method |
| CN101081397A (en) * | 2006-06-01 | 2007-12-05 | 宜兴市张泽浇注耐火材料厂 | Permanent innocent treatment method of city life rubbish, industrial refuse and incineration fly ash |
| CN101817671A (en) * | 2010-02-09 | 2010-09-01 | 广州建材企业集团有限公司 | Method for burning fly ash by utilizing refuse in ceramsite production |
| CN101906297A (en) * | 2010-08-02 | 2010-12-08 | 中国地质大学（武汉） | Method for preparing film-coated ceramisite proppant by using oil shale wastes |
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