CN104624607A - Household garbage incineration residue treatment method - Google Patents
Household garbage incineration residue treatment method Download PDFInfo
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- CN104624607A CN104624607A CN201410815012.XA CN201410815012A CN104624607A CN 104624607 A CN104624607 A CN 104624607A CN 201410815012 A CN201410815012 A CN 201410815012A CN 104624607 A CN104624607 A CN 104624607A
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Abstract
The invention provides a household garbage incineration residue treatment method. The household garbage incineration residue treatment method comprises the following steps: (1) sorting large-sized materials; (2) carrying out magnetic separation, namely extracting magnetic metal by virtue of the magnetic separation; (3) carrying out multilevel screening on particles with particle sizes greater than 5mm so as to reserve the particles with the particle sizes smaller than 5mm; (4) carrying out eddy current separation, namely respectively extracting multiple groups of nonmagnetic metal in the particles with the particle sizes greater than 5mm by virtue of the eddy current separation; and (5) carrying out wet-method treatment, namely feeding an appropriate amount of circulating water into the particles with particle sizes smaller than 5mm, separating the particles by virtue of a jigging machine and a table concentrator, and extracting the nonmagnetic metal in the range of the particle size. By adopting the household garbage incineration residue treatment method, under the condition that the water consumption and the production amount of sewage and sludge can be reduced by more than 50 percent, the residue aggregates in different particle size ranges can be produced, the nonmagnetic metal with the particle size smaller than 5mm can be maximally extracted, the investment is less than the investment of a pure-dry-method treatment process, and the economic benefit is ideal.
Description
Technical field
The present invention relates to technical field of domestic garbage treatment, in particular to one way of life waste incineration slag semidry method treatment process.
Background technology
Utilize domestic garbage burning electricity generation technology, domestic waste can produce slag after burning under the high temperature of 1000 DEG C.The volume of slag is about 20% ~ 30% of former house refuse.Domestic waste incineration residue color is dark brown; Granular size differs, complicated components, and main component is Ca, Si, Na, K, Fe, Al and part heavy metal.Though slag is through oversintering, mix into a large amount of impurity in earlier stage in process of dispatching from the factory, as glass, iron plate, bottle cap and iron, copper metal, as iron nail, iron wire, iron plate, copper nut etc.
The processing method of domestic and international domestic waste incineration residue mainly comprises dry method and wet method two kinds, both objects are all by the METAL EXTRACTION in slag and recycle, combustible melts down burning after being separated, residue mainly consists of slag, potsherd, masonry and glass, as the alternative aggregate on asphalt road surface, cement/concrete alternative aggregate, Landfill, embankment and roadbed material etc., domestic waste incineration residue farthest resource can be finally made after process.
Slag wet processing technique, by technological processes such as sorting, removal big iron, screening, wet crushing, the thin iron of removal, removal non-ferrous metals, achieves the extraction of metal and the purification of slag.But the large amount of sewage that the domestic wet processing process generally adopted produces and mud can cause comparatively serious secondary pollution to environment.The slag aggregate size distribution produced is comparatively even, and lack grating characteristic, current majority is used to prepare fragment of brick and cement block, and added value is low.If be used in building construction, also there is larger potential safety hazard.
Compared with wet method, the difference of slag dry process technique utilizes the nonmagnetic metal composition in eddy current separation technology extraction slag, and whole technical process, without the need to water, effectively avoids the secondary pollution problem of sewage and precipitating sludge.The slag aggregate size produced can be grating distribution according to user demand, therefore, is suitable for the value segments such as town road construction.But dry process equipment is difficult to the nonferrous metal extracting below 5mm usually, and this is also the technical bottleneck place of the sector.
Therefore, be necessary to propose a kind of new slag treatment process, to solve the deficiencies in the prior art.
Summary of the invention
In summary of the invention part, introduce the concept of a series of reduced form, this will further describe in detailed description of the invention part.Summary of the invention part of the present invention does not also mean that the key feature and essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain attempting to determine technical scheme required for protection.
In order to overcome current Problems existing, one aspect of the present invention provides one way of life waste incineration slag processing method, and it comprises the steps: 1) sorting: by a point sort out bulk materials; 2) magnetic separation: extract magnetic metal by magnetic separation; 3) sieve: isolate the particle organizing particle diameter be greater than 5mm by multistage screening more, be less than the particle of 5mm with remaining particle diameter; 4) eddy current separation: extract the described intragranular nonmagnetic metal organized particle diameter and be greater than 5mm respectively by eddy current separation more; With 5) wet-treating: be less than at particle diameter in the particle of 5mm and add appropriate recirculated water, and carry out sorting by jigging machine and shaking table, extract the nonmagnetic metal in this particle size range.
Preferably, described step 3) comprising: 30) particle separation diameter is greater than the material of 20mm, and remaining particle diameter is less than the material of 20mm; With 31) by slot size be 10 with the screening plant of 5mm, be less than the material of 20mm from particle diameter and sift out particle diameter at 10 ~ 20mm, 5 ~ 10mm and the particle being less than 5mm.
Preferably, described step 3) also comprise: the organic light thing in the material of 20mm 300) is greater than by selection by winnowing removal particle diameter; With 301) the broken particle diameter that circulates is greater than the material of 20mm, until particle diameter is less than 20mm.
Preferably, in described step 1) also comprise before: temporary: pending slag is kept in a period of time, optimization process scope is remained on to make the moisture content of slag, namely avoid producing airborne dust in processing procedure, screening and sorting can be realized again smoothly, and make slag self that carbonic acid effect occur, and then stabilisation.
The domestic waste incineration residue processing method that the present invention proposes, organically combine the advantage of current dry method furnace residues processing technique and wet slag treatment process, dry method eddy current separation technology is adopted to extract nonmagnetic metal to more than 5mm slag, wet method jigging machine and separation by shaking table technology is then adopted to extract nonmagnetic metal to below 5mm slag, overcome the shortcoming that dry method furnace residues processing technique is difficult to below 5mm metal extract, farthest extract the metal in each particle size range slag; Overcome the too uniform situation of particle grain class distribution in wet processing process, the slag producing different-grain diameter gathers materials simultaneously.The slag adopting method provided by the invention to produce gathers materials and can be divided into 0 ~ 5mm, 5 ~ 10mm and 10 ~ 20mm tri-grades.
Further, the domestic waste incineration residue processing method part proposed due to the present invention adopts wet processing process, a part adopts dry process technique, thus the water consumption in slag treatment process can be reduced, compare conventional wet treatment process, semidry method domestic waste incineration residue processing method water consumption of the present invention reduces more than 50%, and can reduce by more than 50% sewage and mud generation.
In sum, the domestic waste incineration residue processing method that the present invention proposes, when the generation of water consumption, sewage and mud all reduces more than 50%, the slag producing different-grain diameter scope gathers materials, the nonmagnetic metal of maximum extraction metal especially below 5mm, investment is simultaneously less than pure dry process technique, possesses desirable economic benefit.
Accompanying drawing explanation
Following accompanying drawing of the present invention in this as a part of the present invention for understanding the present invention.Shown in the drawings of embodiments of the invention and description thereof, be used for explaining principle of the present invention.
In accompanying drawing:
Fig. 1 is the flow chart of the domestic waste incineration residue processing method that the present invention one side embodiment proposes.
Detailed description of the invention
In the following description, a large amount of concrete details is given to provide more thorough understanding of the invention.But, it will be apparent to one skilled in the art that the present invention can be implemented without the need to one or more details.In other example, in order to avoid obscuring with the present invention, technical characteristics more well known in the art are not described.
In order to thoroughly understand the present invention, by following description, detailed structure and step are proposed, to explain the technical scheme of the present invention's proposition.Preferred embodiment of the present invention is described in detail as follows, but except these are described in detail, the present invention can also have other embodiments.
Fig. 1 is the flow chart of the domestic waste incineration residue processing method that the present invention one side embodiment proposes.Below in conjunction with Fig. 1, domestic waste incineration residue processing method of the present invention is described in detail.
As shown in Figure 1, first, perform step S100, house refuse is carried out burning disposal in burning power plant, and obtains slag.
Then, perform step S101, dregs of incinerator is kept in.Namely, dregs of incinerator is stacked a period of time (about 1 ~ 2 month) at temporary library, optimization process scope is remained on to make the moisture content of slag, general moisture content is reduced to 15% ~ 18%, so both avoided producing airborne dust in processing procedure, can realize again screening and sorting smoothly, can there is carbonic acid effect in slag self simultaneously, stabilized preferably.
Then, perform step S102, the slag obtained through step S101 is sorted.That is, the bulk materials in hand picking slag discharging, comprises metal, fragment of brick etc.Preferably, by manual sorting, optional magnetic metal and the metal such as copper, aluminium such as to tap a blast furnace.
Then, perform step S103, carry out magnetic separation to the slag obtained through step S102, by magnetic separation, extracted by the magnetic metal being manually difficult to distinguish, residue then enters subsequent treatment.
Then, perform step S104, carry out first stage screening.The slot size 20mm of first stage screening, particle diameter is greater than the particle of 20mm by separated, and remaining particle diameter is less than the particle of 20mm.
Particle diameter is greater than to the particle of 20mm, performs step S105, by selection by winnowing, removal particle diameter is greater than the organic light thing in the material screening of 20mm, and isolated organic light thing is back to step S100, continues to burn in burning power plant; Then then perform step S106 by the material screening obtained after step S105 selection by winnowing, carry out fragmentation.That is, the broken particle diameter that circulates is greater than the particle of 20mm, until particle diameter is less than 20mm.
Particle diameter is less than to the particle of 20mm, performs step S107, carry out second stage screening.The slot size of second stage screening is 10mm, to sift out the particle of particle diameter between 10 ~ 20mm, and obtains the slag that particle diameter is less than 10mm.
To the particle of the particle diameter obtained through step S107 process between 10 ~ 20mm, perform step S108, the nonmagnetic metal proposing wherein by eddy current separation, to obtain particle diameter gathering materials between 10 ~ 20mm.
To the slag obtained through step S107 process, perform step S109, carry out phase III screening.The phase III slot size of screening is 5mm, to sift out the particle of particle diameter between 5 ~ 10mm, and obtains the slag that particle diameter is less than 5mm.
To the particle of the particle diameter obtained through step S109 process between 5 ~ 10mm, perform step S110, the nonmagnetic metal proposing wherein by eddy current separation, to obtain particle diameter gathering materials between 5 ~ 10mm.
To the slag obtained through step S109 process, perform step S111, carry out jigging machine sorting.The particle of below 5mm is made to enter jigging machine, and the effect (ascending current is faster than descent waterflow) of adjoint recirculated water.Thus, the dense media particle in slag to be fully settled down to bottom jigging machine and to be collected;
Then perform step S112, carry out separation by shaking table.The pulpous state slag obtained through step S111 drains into shaking table, efficiently, automatically screens through shaking table, is again separated, the metal species dense media remained in slag to remove below 5mm metallic particles.
Then perform step S113, through the slag that step S112 obtains, put into sedimentation basin precipitation.
Then perform step S114, through the particle of step S113 precipitation, the slag namely obtaining being less than 5mm after draining screening gathers materials.
The present invention is illustrated by above-described embodiment, but should be understood that, above-described embodiment just for the object of illustrating and illustrate, and is not intended to the present invention to be limited in described scope of embodiments.In addition it will be appreciated by persons skilled in the art that the present invention is not limited to above-described embodiment, more kinds of variants and modifications can also be made according to instruction of the present invention, within these variants and modifications all drop on the present invention's scope required for protection.Protection scope of the present invention defined by the appended claims and equivalent scope thereof.
Claims (4)
1. one way of life waste incineration slag processing method, is characterized in that, comprises the steps:
1) sort: by a point sort out bulk materials;
2) magnetic separation: extract magnetic metal by magnetic separation;
3) sieve: isolate the particle organizing particle diameter be greater than 5mm by multistage screening more, be less than the particle of 5mm with remaining particle diameter;
4) eddy current separation: extract the described intragranular nonmagnetic metal organized particle diameter and be greater than 5mm respectively by eddy current separation more; With
5) wet-treating: be less than at particle diameter in the particle of 5mm and add appropriate recirculated water, and carry out sorting by jigging machine and shaking table, extract the nonmagnetic metal in this particle size range.
2. domestic waste incineration residue processing method according to claim 1, is characterized in that, described step 3) comprising:
30) particle separation diameter is greater than the material of 20mm, and remaining particle diameter is less than the material of 20mm; With
31) by slot size be 10 with the screening plant of 5mm, be less than the material of 20mm from particle diameter and sift out particle diameter at 10 ~ 20mm, 5 ~ 10mm and the particle being less than 5mm.
3. domestic waste incineration residue processing method according to claim 2, is characterized in that, described step 3) also comprise:
300) the organic light thing in the material of 20mm is greater than by selection by winnowing removal particle diameter; With
301) the broken particle diameter that circulates is greater than the material of 20mm, until particle diameter is less than 20mm.
4. domestic waste incineration residue processing method according to claim 1, is characterized in that, in described step 1) also comprise before:
Temporary: pending slag is kept in a period of time, to make the moisture content of slag remain on optimization process scope, and make slag self that carbonic acid effect occur, and then stabilisation.
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| CN105195313A (en) * | 2015-08-24 | 2015-12-30 | 同济大学 | Method for recycling metal and combustibles from domestic waste incineration slag |
| CN106082738A (en) * | 2016-08-01 | 2016-11-09 | 浙江桂森环保科技有限公司 | A kind of method utilizing waste incineration slag to manufacture building materials |
| CN106623353A (en) * | 2016-11-16 | 2017-05-10 | 小威环境（北京）科技有限公司 | Method for producing recycled aggregate from household garbage incineration slag |
| CN106746820A (en) * | 2016-11-16 | 2017-05-31 | 南京天合嘉能再生资源有限公司 | The production technology that a kind of road engineering slag gathers materials |
| CN108218186A (en) * | 2018-01-05 | 2018-06-29 | 中冶华天工程技术有限公司 | The method that sludge conditioner is prepared using domestic waste incineration residue |
| CN108751840A (en) * | 2018-05-25 | 2018-11-06 | 邓立科 | The treatment process of clinker and the concrete prepared using the clinker |
| CN108941152A (en) * | 2018-06-12 | 2018-12-07 | 上海秦望环保材料有限公司 | A kind of domestic waste incineration residue circulating water wash pretreating process |
| CN109136577A (en) * | 2017-06-16 | 2019-01-04 | 易门铜业有限公司 | A kind of copper smelting slag processing unit and its method |
| CN109402404A (en) * | 2018-12-12 | 2019-03-01 | 北京科技大学 | A kind of method that cinder from refuse incineration extracts valuable metal |
| CN109420666A (en) * | 2017-09-04 | 2019-03-05 | 中节能（汕头）循环经济有限公司 | A method of sorting old circuit board resource |
| CN109731673A (en) * | 2019-03-16 | 2019-05-10 | 德州群峰机械制造有限公司 | A kind of waste incinerator residues processing technique |
| CN109759419A (en) * | 2018-12-27 | 2019-05-17 | 江苏道亚环境科技有限公司 | A kind of clinker dry type automatic sorting method |
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| CN105195313A (en) * | 2015-08-24 | 2015-12-30 | 同济大学 | Method for recycling metal and combustibles from domestic waste incineration slag |
| CN105195313B (en) * | 2015-08-24 | 2017-07-28 | 同济大学 | The method that metal and combustible are reclaimed from domestic waste incineration residue |
| CN106082738A (en) * | 2016-08-01 | 2016-11-09 | 浙江桂森环保科技有限公司 | A kind of method utilizing waste incineration slag to manufacture building materials |
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| CN108218186A (en) * | 2018-01-05 | 2018-06-29 | 中冶华天工程技术有限公司 | The method that sludge conditioner is prepared using domestic waste incineration residue |
| CN108751840A (en) * | 2018-05-25 | 2018-11-06 | 邓立科 | The treatment process of clinker and the concrete prepared using the clinker |
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| CN113857206A (en) * | 2021-09-17 | 2021-12-31 | 中国恩菲工程技术有限公司 | Treatment method and system for household garbage incineration slag |
| CN113857206B (en) * | 2021-09-17 | 2022-12-23 | 中国恩菲工程技术有限公司 | Treatment method and system for household garbage incineration slag |
| CN115228888A (en) * | 2022-07-26 | 2022-10-25 | 福州美佳环保资源开发有限公司 | Comprehensive utilization intelligent platform for slag of household garbage incineration power plant |
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| CN115846046A (en) * | 2022-11-30 | 2023-03-28 | 中冶京诚工程技术有限公司 | Method for sorting metal slag |
| CN117696215A (en) * | 2024-02-05 | 2024-03-15 | 天津高能时代再生资源利用有限公司 | Sorting and recycling system for garbage incinerator slag |
| CN117696215B (en) * | 2024-02-05 | 2024-05-14 | 天津高能时代再生资源利用有限公司 | Sorting and recycling system for garbage incinerator slag |
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| CN104624607B (en) | 2018-03-23 |
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