CN112871742A - Household garbage incinerator slag crushing, sorting and recycling process - Google Patents
Household garbage incinerator slag crushing, sorting and recycling process Download PDFInfo
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- CN112871742A CN112871742A CN202110130777.XA CN202110130777A CN112871742A CN 112871742 A CN112871742 A CN 112871742A CN 202110130777 A CN202110130777 A CN 202110130777A CN 112871742 A CN112871742 A CN 112871742A
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- slag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
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Abstract
The invention relates to the technical field of garbage treatment systems, in particular to a process for crushing, sorting and recycling household garbage incinerator slag. Compared with the prior art, magnetic metals are separated from slag by using a magnetic separator, then the slag is crushed to a proper size for eddy current separation, the separation working efficiency can be improved, waste slag separated by eddy current is further separated, glass in the waste slag is separated, then the glass is separated according to colors, nonmagnetic metals are separated by an eddy current separation device, then the nonmagnetic metals are further crushed, and aluminum slag of the nonmagnetic metals is separated by a quality air separation mechanism; the aluminum metal separation device is simple in structure, can separate aluminum metal in slag, utilizes the aluminum metal to perform recasting, realizes crushing, separation and recycling of the slag, and solves the problem of resource waste in the past.
Description
Technical Field
The invention relates to the technical field of garbage treatment systems, in particular to a process for crushing, sorting and recycling household garbage incinerator slag.
Background
The domestic garbage is incinerated and disposed, and the energy generated by the domestic garbage is utilized to generate electricity, so that waste is changed into valuable, and the method is one of the more advanced methods for domestic garbage disposal internationally at present. The household garbage incineration power generation has three advantages of resource utilization, reduction and harmlessness, and is also the main direction of household garbage treatment in China.
The domestic garbage can generate slag after being burnt, and along with the continuous development and popularization of the domestic garbage burning technology, the generation amount of the slag can be increased.
At present, the crushing, sorting and recycling process of the household garbage incineration slag in China is complex, and the slag cannot be thinned and efficiently sorted and collected.
Disclosure of Invention
The invention aims to provide a process for crushing, sorting and recycling household garbage incineration slag, aiming at the defects in the prior art.
The purpose of the invention is realized by the following technical scheme: the application provides a domestic waste burns slag and breaks branch
The selecting and recycling process comprises the following steps:
step a, magnetic separation, namely, the slag is placed into a magnetic machine for separation, and magnetic metal in the slag is separated from the slag
Removing to obtain slag A and magnetic metal;
b, screening and crushing, namely screening the slag A in the step a through a primary screening machine, crushing the slag A particles with the particle size larger than 5mm in a primary crusher, conveying the slag with the particle size smaller than 5mm to a vortex separation device, crushing the slag A by the primary crusher to obtain the slag with the particle size smaller than 5mm, and conveying the slag to the vortex separation device;
c, performing vortex separation, namely performing vortex separation on the slag A with the particle size of less than 5mm by using a vortex separation device to separate nonmagnetic metal and slag B, conveying the slag B to a secondary screening machine for screening, and conveying the nonmagnetic metal to a secondary screening machine
Sending to a secondary crusher for crushing to ensure that the grain diameter of the non-magnetic metal is less than 3 mm;
d, sorting the glass, screening the slag B by a secondary screening machine to obtain ash slag with the particle size of less than 1mm and mixed glass with the particle size of more than 1mm, and conveying the mixed glass to a colorimetric sorting device for color separation;
e, separating colors of the glass, and separating colors of the mixed glass by a colorimetric separation device to obtain transparent glass and non-transparent glass
Glass;
f, performing non-magnetic metal winnowing, namely putting the non-magnetic metal in the step c into a quality winnowing mechanism for separation to obtain aluminum slag;
and g, mixing and recasting, namely proportioning, mixing and grinding the aluminum slag mixed aluminum material in the step f, and recasting in a plate recasting machine to obtain the aluminum plate.
Wherein, in the step a, the magnetic metal is put into a magnetic metal bin for storage.
And d, placing the ash and soil residues into an ash bin for storage.
And g, proportioning the aluminum slag and the aluminum material through a proportioning meter, then putting into a mixing and grinding stirrer for stirring, and finally putting into a plate-type recasting machine for recasting.
Wherein, the mixing and grinding stirrer is a screw extruder.
The invention has the beneficial effects that: compared with the prior art, the household garbage incinerator slag crushing, sorting and recycling process has the advantages that magnetic metals are sorted from the slag by a magnetic separator, then the slag is crushed to the proper size and is subjected to eddy current sorting, the sorting work efficiency can be improved, then waste slag sorted by eddy current is further sorted, glass in the waste slag is sorted, then the glass is sorted according to colors, nonmagnetic metals are sorted by an eddy current sorting device, then the nonmagnetic metals are further crushed, aluminum slag of the nonmagnetic metals is sorted by a quality air separation mechanism, and finally the aluminum slag and waste aluminum materials are subjected to mixed grinding and recasting to obtain aluminum plates;
the aluminum metal separation device is simple in structure, can separate aluminum metal in slag, utilizes the aluminum metal to perform recasting, realizes crushing, separation and recycling of the slag, and solves the problem of resource waste in the past.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic flow chart of the household garbage incinerator slag crushing, sorting and recycling system in the embodiment.
Description of the drawings: the device comprises a magnetic separator 1, a magnetic metal bin 2, a primary screening machine 3, a primary crusher 4, an eddy current sorting device 5, a secondary screening machine 6, an ash and soil bin 7, a colorimetric sorting device 8, a secondary crusher 9, a quality winnowing mechanism 10, a proportioning meter 11, a mixed grinding and stirring machine 12 and a plate-type recasting machine 13.
Detailed Description
The invention is further described with reference to the following examples.
The specific implementation mode of the household garbage incinerator slag crushing, sorting and recycling process is shown in figure 1, and comprises a magnetic separator 1, a magnetic metal bin 2, a primary screening machine 3, a primary crushing machine 4, an eddy current sorting device 5, a secondary screening machine 6, an ash and soil bin 7, a colorimetric sorting device 8, a secondary crushing machine 9, a mass air separation mechanism 10, a proportioning meter 11, a mixing and grinding stirrer 12 and a plate-type recasting machine 13.
The process for crushing, sorting and recycling the household garbage incinerator slag comprises the following steps: step a, magnetic separation, namely separating the slag in a magnetic machine, and removing magnetic metals in the slag from the slag to obtain slag A and magnetic metals, wherein the magnetic metals such as a large amount of iron and the like exist in the slag, so that the magnetic metals can be recycled to the maximum extent through the magnetic separator 1, and the utilization rate of resources is improved. And removing magnetic metal from the slag to obtain slag A, and conveying the slag A to a primary screening machine 3 for screening.
And b, screening and crushing, namely screening the slag A in the step a through a primary screening machine 3, putting the slag A particles with the particle size of more than 5mm into a primary crusher 4 for crushing, conveying the slag with the particle size of less than 5mm to a vortex sorting device 5, crushing the slag A by the primary crusher 4 to obtain the slag with the particle size of less than 5mm, and then conveying the slag to the vortex sorting device 5. Because the slag particle size is not uniform before not broken, if there is great difference in upper limit and the lower limit of particle size, can cause the influence to the sorting efficiency that the vortex was selected separately, consequently, through screening slag A and broken to the particle size be less than 5, mm, can ensure the normal operating and the highest work efficiency that the vortex was selected separately.
And c, performing vortex separation, namely performing vortex separation on the slag A with the particle size of less than 5mm by using a vortex separation device 5 to separate nonmagnetic metal and slag B, conveying the slag B to a secondary screening machine 6 for screening, and conveying the nonmagnetic metal to a secondary crusher 9 for crushing to ensure that the particle size of the nonmagnetic metal is less than 3 mm. It should be noted that the eddy current sorting apparatus 5 employs a conventional eddy current sorting machine, which mainly uses a high-frequency switching magnetic field and the characteristics of conductive metals for sorting. The slag A is well sorted by the eddy current sorting device 5 to obtain slag B and non-magnetic metal, wherein the slag B is mainly non-metallic substances such as glass, ash and soil, and therefore, the non-metallic substances can sort out glass with a useful value from the slag B; the non-magnetic metal is mainly aluminum, copper and zinc, and can be sorted by wind power and gravity by using different densities.
And d, sorting the glass, screening the slag B by a secondary screening machine 6 to obtain the ash slag with the particle size smaller than 1mm and the mixed glass with the particle size larger than 1mm, conveying the mixed glass to a colorimetric sorting device 8 for color separation, and screening the slag B by using a grid to separate the ash slag with the smaller particle size from the mixed glass. And e, separating colors of the glass, and separating the colors of the mixed glass by the colorimetric separation device 8 to obtain the transparent glass and the non-transparent glass, wherein the colorimetric separation device 8 is a conventional color separation device, and can be used for separating the mixed glass by using whether the glass is transparent or not as a main separation condition, and for a person skilled in the art, the specific working principle and structure of the colorimetric separation device are conventional technologies.
And f, performing non-magnetic metal winnowing, namely putting the non-magnetic metal in the step c into a mass winnowing mechanism 10 for separation to obtain the aluminum slag. Because the densities of the metal materials such as aluminum, copper, zinc and the like are different, the secondary crusher 9 crushes the grain diameter of the slag B metal to be less than 3mm, so that the error caused by different grain diameters can be reduced, and the sorting accuracy is improved. It should be noted that the mass air separation mechanism 10 is a conventional air separation mechanism, and specifically includes a plurality of storage hoppers arranged along the wind direction, and then blows the slag B by using a fan, so that the nonmagnetic metal is separated into the corresponding storage hoppers along the wind direction and under the action of gravity, thereby separating the aluminum slag.
And g, mixing and recasting, namely proportioning, mixing and grinding the aluminum slag mixed aluminum material in the step f, and recasting in a plate recasting machine to obtain the aluminum plate. And step g, proportioning the aluminum slag and the aluminum material by a proportioning meter 11, then putting the mixture into a mixing and grinding stirrer for stirring, and finally putting the mixture into a plate-type recasting machine for recasting to obtain the aluminum plate. It should be noted that the proportion of the specific meter can be selected according to the actual requirement, and the mixing and grinding blender is a screw extruder.
In step a, the magnetic metal is put into the magnetic metal silo 2 for storage.
In step d, the lime-soil residues are placed in a lime-soil silo 7 for storage.
The domestic waste burns the broken technology of selecting separately and recycling of slag of this embodiment, compared with the prior art, utilize magnet separator 1 to separate magnetic metal from the slag, then with the slag breakage to proper size carry out the vortex and select separately, can improve and select separately work efficiency, then further select separately the waste residue that the vortex was selected out, select out the glass of the inside, then select separately according to the colour to glass again, the non-magnetic metal that vortex sorting unit 5 was selected out, then further break to non-magnetic metal, utilize quality air separator 10 to select out the aluminium sediment of non-magnetic metal, mix and grind recast aluminium sediment and waste aluminum product at last, obtain aluminum plate. The aluminum metal separation device is simple in structure, can separate aluminum metal in slag, utilizes the aluminum metal to perform recasting, realizes crushing, separation and recycling of the slag, and solves the problem of resource waste in the past.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A household garbage incineration slag crushing, sorting and recycling process is characterized by comprising the following steps:
step a, magnetic separation, namely, separating the slag in a magnetic machine, and removing magnetic metals in the slag to obtain slag A and magnetic metals;
b, screening and crushing, namely screening the slag A in the step a through a primary screening machine, crushing the slag A particles with the particle size larger than 5mm in a primary crusher, conveying the slag with the particle size smaller than 5mm to a vortex separation device, crushing the slag A by the primary crusher to obtain the slag with the particle size smaller than 5mm, and conveying the slag to the vortex separation device;
c, performing vortex separation, namely performing vortex separation on the slag A with the particle size of less than 5mm by using a vortex separation device to separate nonmagnetic metal and slag B, conveying the slag B to a secondary screening machine for screening, and conveying the nonmagnetic metal to a secondary crusher for crushing to ensure that the particle size of the nonmagnetic metal is less than 3 mm;
d, sorting the glass, screening the slag B by a secondary screening machine to obtain ash slag with the particle size of less than 1mm and mixed glass with the particle size of more than 1mm, and conveying the mixed glass to a colorimetric sorting device for color separation;
e, separating colors of the glass, and separating the colors of the mixed glass by a colorimetric separation device to obtain light-transmitting glass and non-light-transmitting glass;
f, performing non-magnetic metal winnowing, namely putting the non-magnetic metal in the step c into a quality winnowing mechanism for separation to obtain aluminum slag;
and g, mixing and recasting, namely proportioning, mixing and grinding the aluminum slag mixed aluminum material in the step f, and recasting in a plate recasting machine to obtain the aluminum plate.
2. The process for crushing, sorting and recycling household garbage incineration slag according to claim 1, wherein: in step a, the magnetic metal is placed in a magnetic metal bin for storage.
3. The process for crushing, sorting and recycling household garbage incineration slag according to claim 1, wherein: and d, placing the ash and soil residues into an ash bin for storage.
4. The process for crushing, sorting and recycling household garbage incineration slag according to claim 1, wherein: and step g, proportioning the aluminum slag and the aluminum material by a proportioning meter, then putting the mixture into a mixing and grinding stirrer for stirring, and finally putting the mixture into a plate-type recasting machine for recasting.
5. The process for crushing, sorting and recycling household garbage incineration slag according to claim 4, wherein: the mixing and grinding stirrer is a screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110130777.XA CN112871742A (en) | 2021-01-29 | 2021-01-29 | Household garbage incinerator slag crushing, sorting and recycling process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110130777.XA CN112871742A (en) | 2021-01-29 | 2021-01-29 | Household garbage incinerator slag crushing, sorting and recycling process |
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| CN112871742A true CN112871742A (en) | 2021-06-01 |
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| CN202110130777.XA Pending CN112871742A (en) | 2021-01-29 | 2021-01-29 | Household garbage incinerator slag crushing, sorting and recycling process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116974201A (en) * | 2023-08-07 | 2023-10-31 | 江苏秦郡环保科技有限公司 | Buoyancy separation-based garbage incinerator slag recycling control method and system |
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| CN104498719A (en) * | 2014-12-17 | 2015-04-08 | 上海大学 | Method for extracting and purifying metal aluminum from eddy current separated materials of municipal refuse incinerator |
| CN105195313A (en) * | 2015-08-24 | 2015-12-30 | 同济大学 | Method for recycling metal and combustibles from domestic waste incineration slag |
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| CN206578026U (en) * | 2016-12-27 | 2017-10-24 | 格林美（武汉）城市矿产循环产业园开发有限公司 | A kind of non-ferrous metal separation system |
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| CN112237987A (en) * | 2020-07-24 | 2021-01-19 | 广东郡睿环保科技有限公司 | Method for improving recovery rate of magnetic metal in household garbage incinerator slag |
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2021
- 2021-01-29 CN CN202110130777.XA patent/CN112871742A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19806082A1 (en) * | 1998-02-14 | 1999-08-19 | Pfrang Stotz | Volume stability of treated or crude domestic waste incineration slag is tested to determine its suitability as a building material |
| CN104498719A (en) * | 2014-12-17 | 2015-04-08 | 上海大学 | Method for extracting and purifying metal aluminum from eddy current separated materials of municipal refuse incinerator |
| CN105195313A (en) * | 2015-08-24 | 2015-12-30 | 同济大学 | Method for recycling metal and combustibles from domestic waste incineration slag |
| CN205495811U (en) * | 2016-03-29 | 2016-08-24 | 首钢环境产业有限公司 | Garbage incinerator sediment utilization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116974201A (en) * | 2023-08-07 | 2023-10-31 | 江苏秦郡环保科技有限公司 | Buoyancy separation-based garbage incinerator slag recycling control method and system |
| CN116974201B (en) * | 2023-08-07 | 2024-01-23 | 江苏秦郡环保科技有限公司 | Buoyancy separation-based garbage incinerator slag recycling control method and system |
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Application publication date: 20210601 |