CN113399133A - Dry-method classification system and classification process for tailings - Google Patents
Dry-method classification system and classification process for tailings Download PDFInfo
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- CN113399133A CN113399133A CN202110591928.1A CN202110591928A CN113399133A CN 113399133 A CN113399133 A CN 113399133A CN 202110591928 A CN202110591928 A CN 202110591928A CN 113399133 A CN113399133 A CN 113399133A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/002—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external filters
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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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
- Cyclones (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a dry classification system and a classification process for tailings, wherein the system comprises a dryer, a drying blower, a dynamic powder concentrator, a cyclone separator, a bag type dust collector, an exhaust gas fan, a crusher and a square plansifter, wherein an outlet of the drying blower is connected with an air inlet of the dryer, a coarse powder outlet of the dryer is connected with an inlet of the dynamic powder concentrator, a fine powder outlet of the dynamic powder concentrator is connected with an inlet of the cyclone separator, a fine powder outlet of the cyclone separator is connected with an inlet of the bag type dust collector, and an exhaust gas outlet of the bag type dust collector is connected with an inlet of the exhaust gas fan; the dryer coarse grain outlet is connected with the crusher inlet, the crusher outlet is connected with the high square flat screen inlet, the high square flat screen is provided with a plurality of different grain grade material outlets, and crushed coarse grains are screened into a plurality of grain grades. The system is adopted to carry out dry classification on the tailings, so that the whole tailings can be dried and separated into parts of coarse particles, fine particles and micro powder, the requirements of different purposes are met, and the recovery of fine mud in the tailings is realized.
Description
Technical Field
The invention relates to the technical field of dry classification of tailings, in particular to a dry classification system and a classification process for tailings.
Background
Tailings are waste from the mineral separation industry, mainly contain inorganic minerals, and can be used for manufacturing building materials after being properly classified. The number of various mines in China is up to 8000, at present, various tailings are piled up to 60 hundred million tons (iron tailings account for about 1/3), and the utilization rate is less than 20%. Tailings stockpiling not only encroaches a large amount of land but also increases disposal costs.
The prior grading measures for grading tailings include single-layer grading and direct multi-layer screening grading, but both have problems.
Most of the existing particle classification processes are wet classification, which is suitable for coarse particles but not for fine mud. No matter the curved surface strip-seam sieve and the silt grading sieve are adopted, or the direct multi-layer grading sieve is adopted, the finally remained fine silt is discarded and stockpiled. The existing classification measures of heavy sand and light mud cannot solve the condition that mud (part of <0.15 mm) in tailings accounts for most parts. Therefore, there is a need to develop a classification system that can dry and separate the whole tailings into "coarse," "fine," and "fine" fractions for different uses.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a dry-method classification system and a classification process for tailings, wherein the dry-method classification system adopts a process of drying rough concentration and multi-stage fine concentration, and can dry and separate full tailings into a plurality of parts of coarse particles, coarse powder, fine powder and micro powder so as to meet the requirements of different purposes.
The invention is realized in this way, a dry method grading system for tailings, including drying-machine, drying blower, dynamic powder concentrator, cyclone separator, bag-type dust collector, exhaust fan, breaker, high square flat screen, the outlet of the said drying blower couples to air intake of the drying-machine, the coarse powder outlet of the said drying-machine couples to entrance of the dynamic powder concentrator, the fine powder outlet of the said dynamic powder concentrator couples to entrance of the cyclone separator, the micropowder outlet of the said cyclone separator couples to entrance of the bag-type dust collector, the exhaust outlet of the said bag-type dust collector couples to entrance of the exhaust fan, the outlet of the said exhaust fan connects dynamic powder concentrator and/or drying blower; the coarse grain outlet of the dryer is connected with the inlet of the crusher, the outlet of the crusher is connected with the inlet of the square flat screen, and the square flat screen is provided with a plurality of material outlets with different grain sizes, so that the crushed coarse grains are screened into a plurality of grain sizes.
Preferably, a coarse powder outlet of the dynamic powder concentrator is connected with a # 1 bin, a fine powder outlet of the cyclone separator is connected with a # 2 bin, and a fine powder outlet of the bag-type dust collector is connected with a # 3 bin.
Preferably, the tailings are conveyed to a dryer by a conveying device.
Preferably, the dryer is a fluidized bed dryer, and the thickness of a material layer of the fluidized bed dryer is 50 mm-100 mm.
Preferably, the crusher is a vertical shaft crusher.
Preferably, a plurality of the square plansifters are arranged in parallel; the screen cabin of the square plansifter adopts a closed dustproof structure, and multiple layers of screen meshes are arranged in the screen cabin.
Preferably, the outlet of the waste gas fan is also connected with a chimney.
The dry-method classification process adopting the dry-method classification system for the tailings comprises the following steps:
s1, conveying the tailings to a dryer, drying the tailings by the dryer, meanwhile, selecting coarse powder with the particle size of less than 0.15mm by wind, and enabling the residual coarse powder to overflow from the dryer;
s2, the coarse powder in the step S1 is brought into a dynamic powder concentrator by hot air, fine powder with the particle size of less than 0.08mm is further separated from the coarse powder by the dynamic powder concentrator, and the coarse powder with the residual particle size of 0.08-0.15 mm is collected;
s3, the fine powder in the step S2 is brought into a cyclone separator by hot air, the fine powder with the particle size of less than 0.045mm is further separated from the fine powder by the cyclone separator, and the fine powder with the residual particle size of 0.045 mm-0.08 mm is collected;
s4, the micro powder in the step S3 is brought into a bag type dust collector by hot air, the micro powder with the particle size of less than 0.045mm is collected by the bag type dust collector, and the waste gas is conveyed to a chimney through a waste gas fan to be discharged outside and conveyed to a dynamic powder concentrator or a drying blower.
Preferably, in step S1, the "coarse grains" overflowing from the dryer are crushed by the crusher, introduced into the square plansifter, and continuously screened into several fractions by the square plansifter.
The invention has the following advantages and beneficial effects:
1) the dry-method grading system adopts a process of drying rough concentration and multi-section fine concentration, and can dry and separate the whole tailings into: the coarse particles, the coarse powder, the fine powder and the micro powder meet the requirements of different purposes, and the fine mud in the tailings is recovered.
2) The invention adopts the dynamic powder separator to separate fine powder, has stable flow field, adopts the cyclone separator to separate micro powder, has small fluid resistance, collects the micro powder by the bag type dust collector, saves the cost and improves the comprehensive utilization rate of equipment.
3) The invention adopts a square plansifter for sieving, is suitable for sieving coarse particles, and adopts a design that a plurality of bins are arranged in parallel and each bin is sealed and dustproof; each bin is provided with a plurality of layers of screens, so that the occupied area is small; the area of each layer of screen is small, which is beneficial to the uniform distribution of materials; the screen cloth can be changed, adaptable different tailings and the needs of hierarchical.
Drawings
FIG. 1 is a flow diagram of a dry-staging system provided by an embodiment of the present invention;
FIG. 2 is a front view of a dry-staging system provided by an embodiment of the present invention;
fig. 3 is a top view of a dry fractionation system provided by an embodiment of the present invention.
In the figure: 1. a conveying device; 2. a dryer; 3. hot air; 4. a drying blower; 5. a dynamic powder concentrator; 6. a cyclone separator; 7. a bag type dust collector; 8. a waste gas fan; 9. a crusher; 10. high square flat screen; 11. and circulating the air pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, an embodiment of the present invention provides a dry classification system for tailings, including a dryer 2, a drying blower 4, a dynamic powder concentrator 5, a cyclone separator 6, a bag-type dust collector 7, an exhaust gas fan 8, a crusher 9, and a square plansifter 10, where an outlet of the drying blower 4 is connected to an air inlet of the dryer 2, a coarse powder outlet of the dryer 2 is connected to an inlet of the dynamic powder concentrator 5, a fine powder outlet of the dynamic powder concentrator 5 is connected to an inlet of the cyclone separator 6, a fine powder outlet of the cyclone separator 6 is connected to an inlet of the bag-type dust collector 7, an exhaust gas outlet of the bag-type dust collector 7 is connected to an inlet of the exhaust gas fan 8, and an outlet of the exhaust gas fan 8 is connected to a chimney, the dynamic powder concentrator 5, and the drying blower 4; the coarse grain outlet of the dryer 2 is connected with the inlet of the crusher 9, the outlet of the crusher 9 is connected with the inlet of the square plansifter 10, and the square plansifter 10 is provided with a plurality of material outlets with different grain sizes, so that the crushed coarse grains are screened into a plurality of grain sizes.
Preferably, in this embodiment, a coarse powder outlet of the dynamic powder concentrator 5 is connected to the # 1 bin, a fine powder outlet of the cyclone separator 6 is connected to the # 2 bin, and a fine powder outlet of the bag-type dust collector 7 is connected to the # 3 bin.
The tailings are conveyed to a dryer 2 through a conveying device 1. The dryer 2 adopts a fluidized bed dryer 2, and the thickness of the material layer of the fluidized bed dryer 2 is 50 mm-100 mm. The crusher 9 adopts a vertical shaft crusher 9.
A plurality of the square plansifters 10 are arranged in parallel; the screen cabin of the square plansifter 10 adopts a closed dustproof structure, and a plurality of layers of screen meshes are arranged in the screen cabin.
A dry classification process for tailings, comprising the steps of:
s1, conveying the tailings to a fluidized bed dryer 2 through a conveying device 1, drying the tailings through the fluidized bed dryer 2, meanwhile, selecting coarse powder with the particle size of less than 0.15mm through wind, and enabling the rest coarse powder to overflow from the fluidized bed dryer 2;
s2, the coarse powder in the step S1 is brought into a dynamic powder selecting machine 5 by hot air 3, fine powder with the particle size of less than 0.08mm is further separated from the coarse powder by the dynamic powder selecting machine 5, and the coarse powder with the residual particle size of 0.08-0.15 mm is collected into a No. 1 bin; the dynamic powder concentrator 5 has a stable flow field and is suitable for the purpose.
S3, the fine powder in the step S2 is brought into a cyclone separator 6 by hot air 3, the fine powder with the particle size of less than 0.045mm is further separated from the fine powder by the cyclone separator 6, and the fine powder with the residual particle size of 0.045 mm-0.08 mm is collected into a No. 2 bunker; the cyclone separator 6 is suitable for sorting 'micropowder' and has small fluid resistance.
S4, the micro powder in the step S3 is brought into a bag type dust collector 7 by hot air 3, the micro powder with the particle size of less than 0.045mm is collected to a 3# bin by the bag type dust collector 7, and the waste gas is conveyed to the outside of a chimney by a waste gas fan 8 and conveyed to a dynamic powder concentrator 5 or a drying blower 4.
Preferably, in step S1, the "coarse grains" overflowing from the fluidized bed dryer 2 are crushed by the vertical shaft crusher 9, introduced into the square plansifter 10, and further sieved by the square plansifter 10 into several size fractions, where the square plansifter 10 can sieve <0.6mm, 0.6-1.18 mm, 1.18-2.36 mm, 2.36-4.75 mm, and >4.75mm5 size fractions. The square plansifter 10 is suitable for screening coarse particles, and is generally provided with a plurality of bins in parallel, and each bin is designed to be sealed and dustproof; each bin is provided with a plurality of layers of screens, so that the occupied area is small; the area of each layer of screen is small, which is beneficial to the uniform distribution of materials; the screen can be changed to adapt to different tailings and grading requirements.
The tailings are sent into a fluidized bed dryer 2 through a conveying device 1 for drying and roughing; after being blown into the fluidized bed dryer 2 through a drying blower 4, hot air 3 penetrates through a tailing layer and carries coarse powder smaller than 0.15mm to enter a dynamic powder concentrator 5, and the rest coarse powder overflows from the fluidized bed dryer 2; the dynamic powder concentrator 5 sorts out fine powder with the particle size less than 80 mu m, and the rest of the fine powder enters a No. 1 bin after being discharged from a cone of the dynamic powder concentrator 5; the fine powder with the particle size less than 80 mu m enters a cyclone separator 6 to sort the fine powder with the particle size less than 45 mu m, and the rest of the fine powder is discharged from a cone of the cyclone separator 6 and then enters a No. 2 bunker; the micro powder less than 45 mu m is collected by a bag type dust collector 7 and then enters a No. 3 bunker; the waste gas is discharged by a waste gas fan 8, and part of the waste gas (< 40%) returns to the dynamic powder concentrator 5 and/or the fluidized bed dryer 2 through a circulating air pipe 11; the coarse particles with the diameter of more than 0.15mm overflowing from the fluidized bed dryer 2 are crushed by a vertical shaft crusher 9 and then sent to a high square flat screen 10 for classification, classified products are respectively stored, and coarse powder (such as <0.6mm) at the bottom of the screen can be returned to the fluidized bed dryer 2 for classification again.
The dry-method grading system adopts a process of drying rough concentration and multi-section fine concentration, and can dry and separate the whole tailings into: the coarse particles, the coarse powder, the fine powder and the micro powder meet the requirements of different purposes, and the fine mud in the tailings is recovered.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced, and the modifications or the replacements may not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A dry classification system for tailings is characterized by comprising a dryer, a drying blower, a dynamic powder concentrator, a cyclone separator, a bag type dust collector, an exhaust gas fan, a crusher and a square plansifter, wherein an outlet of the drying blower is connected with an air inlet of the dryer, a coarse powder outlet of the dryer is connected with an inlet of the dynamic powder concentrator, a fine powder outlet of the dynamic powder concentrator is connected with an inlet of the cyclone separator, a fine powder outlet of the cyclone separator is connected with an inlet of the bag type dust collector, an exhaust gas outlet of the bag type dust collector is connected with an inlet of the exhaust gas fan, and an outlet of the exhaust gas fan is connected with the dynamic powder concentrator and/or the drying blower; the coarse grain outlet of the dryer is connected with the inlet of the crusher, the outlet of the crusher is connected with the inlet of the square flat screen, and the square flat screen is provided with a plurality of material outlets with different grain sizes, so that the crushed coarse grains are screened into a plurality of grain sizes.
2. The dry classification system for tailings of claim 1, wherein a coarse powder outlet of the dynamic powder concentrator is connected with a # 1 bin, a fine powder outlet of the cyclone separator is connected with a # 2 bin, and a fine powder outlet of the bag-type dust collector is connected with a # 3 bin.
3. The dry classification system for tailings of claim 1 wherein the tailings are transported to a dryer via a transport device.
4. The dry classification system for tailings of claim 1 wherein the dryer is a fluidized bed dryer, and the thickness of the fluidized bed dryer layer is 50mm to 100 mm.
5. The dry classification system for tailings of claim 1 wherein the crusher employs a vertical shaft crusher.
6. The dry classification system for tailings according to claim 1, wherein the high square flat screen is provided in plurality and arranged in parallel; the screen cabin of the square plansifter adopts a closed dustproof structure, and multiple layers of screen meshes are arranged in the screen cabin.
7. The dry classification system for tailings of claim 1 wherein the outlet of the exhaust gas fan is further connected with a chimney.
8. A dry classification process for tailings is characterized by comprising the following steps:
s1, conveying the tailings to a dryer, drying the tailings by the dryer, meanwhile, selecting coarse powder with the particle size of less than 0.15mm by wind, and enabling the residual coarse powder to overflow from the dryer;
s2, the coarse powder in the step S1 is brought into a dynamic powder concentrator by hot air, fine powder with the particle size of less than 0.08mm is further separated from the coarse powder by the dynamic powder concentrator, and the coarse powder with the residual particle size of 0.08-0.15 mm is collected;
s3, the fine powder in the step S2 is brought into a cyclone separator by hot air, the fine powder with the particle size of less than 0.045mm is further separated from the fine powder by the cyclone separator, and the fine powder with the residual particle size of 0.045 mm-0.08 mm is collected;
s4, the micro powder in the step S3 is brought into a bag type dust collector by hot air, the micro powder with the particle size of less than 0.045mm is collected by the bag type dust collector, and the waste gas is conveyed to a chimney through a waste gas fan to be discharged outside and conveyed to a dynamic powder concentrator or a drying blower.
9. The dry classification process for tailings according to claim 7, wherein the "coarse" overflowing from the dryer is crushed by the crusher and then introduced into the square plansifter, and the crushed coarse "is further sieved into a plurality of size fractions by the square plansifter in the step S1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234179A (en) * | 2021-12-22 | 2022-03-25 | 山西河坡发电有限责任公司 | A classified screening recovery unit for circulating fluidized bed boiler slag |
| CN114453254A (en) * | 2021-12-21 | 2022-05-10 | 上海电气集团股份有限公司 | Automatic powder screening device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500455A (en) * | 2011-12-21 | 2012-06-20 | 湖北工业大学 | Tailing efficient recovery treatment method |
| CN102688880A (en) * | 2012-06-18 | 2012-09-26 | 武汉市天沭科技发展有限公司 | Method for efficiently recovering and reselecting steel slag |
| CN205192163U (en) * | 2015-11-27 | 2016-04-27 | 贵州芭田生态工程有限公司 | Powdered ore drying and debris piece -rate system |
| JP2016209868A (en) * | 2015-04-28 | 2016-12-15 | 鹿児島県 | Dry separation method for volcanic ejecta sedimented mineral, dry separation apparatus for volcanic ejecta sedimented mineral, fine aggregate and volcanic glass material |
| CN107876206A (en) * | 2017-11-23 | 2018-04-06 | 山东九曲圣基新型建材有限公司 | A kind of method that gold tailings are fully utilized |
| CN109331988A (en) * | 2018-09-18 | 2019-02-15 | 中国矿业大学 | A kind of metalliferous mineral process of enriching and system based on dry sorting equipment |
| CN209049746U (en) * | 2018-11-01 | 2019-07-02 | 佩思国际科贸(北京)有限公司 | The grinding dry separation device and ore-sorting system of chromium depleted zone |
-
2021
- 2021-05-28 CN CN202110591928.1A patent/CN113399133B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500455A (en) * | 2011-12-21 | 2012-06-20 | 湖北工业大学 | Tailing efficient recovery treatment method |
| CN102688880A (en) * | 2012-06-18 | 2012-09-26 | 武汉市天沭科技发展有限公司 | Method for efficiently recovering and reselecting steel slag |
| JP2016209868A (en) * | 2015-04-28 | 2016-12-15 | 鹿児島県 | Dry separation method for volcanic ejecta sedimented mineral, dry separation apparatus for volcanic ejecta sedimented mineral, fine aggregate and volcanic glass material |
| CN205192163U (en) * | 2015-11-27 | 2016-04-27 | 贵州芭田生态工程有限公司 | Powdered ore drying and debris piece -rate system |
| CN107876206A (en) * | 2017-11-23 | 2018-04-06 | 山东九曲圣基新型建材有限公司 | A kind of method that gold tailings are fully utilized |
| CN109331988A (en) * | 2018-09-18 | 2019-02-15 | 中国矿业大学 | A kind of metalliferous mineral process of enriching and system based on dry sorting equipment |
| CN209049746U (en) * | 2018-11-01 | 2019-07-02 | 佩思国际科贸(北京)有限公司 | The grinding dry separation device and ore-sorting system of chromium depleted zone |
Non-Patent Citations (1)
| Title |
|---|
| 呼振峰: "电气石微粉气流磨生产工艺", 《有色金属》, vol. 59, no. 2, pages 62 - 65 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453254A (en) * | 2021-12-21 | 2022-05-10 | 上海电气集团股份有限公司 | Automatic powder screening device |
| CN114234179A (en) * | 2021-12-22 | 2022-03-25 | 山西河坡发电有限责任公司 | A classified screening recovery unit for circulating fluidized bed boiler slag |
| CN114234179B (en) * | 2021-12-22 | 2024-04-12 | 山西河坡发电有限责任公司 | Graded screening and recycling device for slag of circulating fluidized bed boiler |
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