CN111495580A - Photoelectric separation process for coal gangue arranged in underground coal mine roadway - Google Patents
Photoelectric separation process for coal gangue arranged in underground coal mine roadway Download PDFInfo
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- CN111495580A CN111495580A CN202010350917.XA CN202010350917A CN111495580A CN 111495580 A CN111495580 A CN 111495580A CN 202010350917 A CN202010350917 A CN 202010350917A CN 111495580 A CN111495580 A CN 111495580A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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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
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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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
- B07C5/3416—Sorting according to other particular properties according to radiation transmissivity, e.g. for light, x-rays, particle radiation
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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
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
Abstract
The invention discloses a photoelectric coal gangue sorting process for underground coal mine roadway arrangement, which is based on the development of the prior art, breaks through the traditional ground laminated arrangement concept, optimizes the space-time connection of each operation unit in the process flow, constructs a lower module type compact high-efficiency sorting system for the coal mine, accurately matches and cooperatively optimizes the process links such as coal mining, raw coal preparation, photoelectric coal gangue sorting, gangue backfilling and the like, is suitable for coal mines with the grain size content of +150mm below 10 percent and fragile coal quality, can realize the gangue discharge from the underground source of the coal mine, reduces the gangue lifting to the ground, saves the transportation and filling cost, and meets the requirement of environmental protection. Meanwhile, the underground coal gangue efficient separation method for the coal mine can reduce the gangue lifting amount, effectively improve the coal mine exploitation amount and production efficiency, provide technical support for coal mine underground exploitation-washing-filling cooperative operation, simultaneously do not generate special requirements on underground coal mine tunnels and chambers, and is suitable for separation processes of underground narrow chamber spaces.
Description
Technical Field
The invention relates to the field of coal and gangue sorting of underground coal mines, in particular to a photoelectric coal and gangue sorting process for underground coal mine roadway arrangement.
Background
The domestic photoelectric separation industry starts in the 90 th 20 th century, rapidly enters the high-speed development period on the basis of introducing and digesting foreign technologies, is gradually expanded to other fields from the separation processing of grains, beans, seeds and food at the beginning, and is tried in the field of coal gangue separation from before and after 2014.
The method is mainly applied to the coal gangue separation method at home and abroad at present, and comprises the steps of gravity separation, flotation separation, photoelectric separation technology, fluidized bed dry coal separation and the like, wherein the method is suitable for underground coal separation and gangue discharge and mainly comprises photoelectric separation and gravity separation, the gravity separation comprises heavy medium shallow slot gangue discharge, moving screen jigging gangue discharge, air chamber jigging gangue discharge, composite dry gangue discharge and the like, the feeding granularity of a heavy medium shallow slot sorter is 300-25 mm, the processing capacity of a single device can reach 300t/h, the occupied area of the device is about 30m2, such as Jidong New Ming mine group sunny coal mine, the feeding granularity of a moving screen jigger is 400-25 mm, the unit processing capacity of a single device is 60-110 t/m 2. h, the occupied area is about 36m 32, such as the Shandong New Ming industry group collaborative village coal mine, the West coal mine industry, the air chamber is easy to develop into the fields of 150-25 mm, the processing capacity of single device is 280 t/m, the processing capacity of the single device, the Taiwan Ming coal industry group, the air industry is easy to develop the independent coal separation technology, the underground coal industry, the underground coal separation is developed with the low-10-year light-year coal separation technology, the photoelectric separation technology, the underground coal-10-year coal-year Ming-10-year coal separation-year Ming-year coal-year Ming-10-year coal-year Ming-year.
However, the photoelectric separation technology for the coal gangue is applied to the underground coal mine, and no report and application case is found at home and abroad, and the main reason is that equipment for separating the coal gangue in the deep underground coal gangue needs to be modularized and lightweight in structural design and spatial layout, and needs to break through the traditional ground laminated arrangement concept and optimize the space-time connection of each operation unit in the process flow.
Disclosure of Invention
In order to solve the defects in the background art, the invention provides a coal gangue photoelectric sorting process for coal mine underground roadway arrangement, which is innovatively developed based on the development of the prior art, breaks through the traditional ground laminated arrangement concept, optimizes the space-time connection of each operation unit in the process flow, constructs a coal mine underground module type compact high-efficiency sorting system, accurately matches and cooperatively optimizes the process links such as coal mining, raw coal preparation, coal gangue photoelectric sorting, gangue backfilling and the like, is suitable for the coal mine with the particle size content of less than 10 percent and fragile coal mine, can realize the coal mine underground gangue discharge, reduces the gangue lift to the ground, saves the transportation and filling cost, and meets the environmental protection requirement.
Meanwhile, the underground coal gangue efficient separation method for the coal mine can reduce the gangue lifting amount, effectively improve the coal mine exploitation amount and production efficiency, provide technical support for coal mine underground exploitation-washing-filling cooperative operation, simultaneously do not generate special requirements on underground coal mine tunnels and chambers, and is suitable for separation processes of underground narrow chamber spaces.
The purpose of the invention can be realized by the following technical scheme:
a photoelectric separation process for coal gangue arranged in a coal mine underground roadway comprises the following steps:
the method comprises the following steps that firstly, a coal mining machine cuts raw coal of a fully-mechanized coal mining seam, the raw coal falls into a first conveyor belt arranged below the coal mining machine, the first conveyor belt is arranged along a roadway, angle adjustment is carried out, and the raw coal is conveyed to a coal feeder;
secondly, the coal feeder performs primary vibration loosening on raw coal, the uniform raw coal is fed into a second conveyor belt, the second conveyor belt feeds the raw coal into a grading crusher, the crushing cavity opening of the grading crusher is designed to be 150mm, the size fraction smaller than 150mm smoothly passes through, and the size fraction larger than 150mm passes through after being crushed by the extrusion of a crushing cavity;
thirdly, conveying the crushed raw coal to a vibrating screen through a third conveyor belt, wherein the screen hole of the vibrating screen is 35mm, fine-grain raw coal smaller than 35mm is conveyed to a ground coal preparation plant through a fourth conveyor belt after being screened, and coarse-grain raw coal larger than 35mm is conveyed to a fifth conveyor belt after being vibrated, loosened and queued on the vibrating screen;
fourthly, the computer terminal obtains the specific positions of the clean coal and the gangue on the fifth conveyor belt through data analysis, and controls the opening of the electromagnetic air valve according to the falling path of the coal and the gangue, and the air nozzle inclines upwards and is opposite to the falling path of the material;
fifthly, when the waste rock falls, the electromagnetic air valve is instantly opened to blow the waste rock to the front waste rock bin, when clean coal falls, the electromagnetic air valve does not act, the clean coal falls into the clean coal bin according to the original path, the clean coal falls into a sixth conveyor belt, and the sixth conveyor belt conveys the clean coal to the ground coal bin along the roadway;
and sixthly, the waste rock falls into a seventh conveyor belt, and the seventh conveyor belt conveys the waste rock to an underground waste rock bin for buffer storage and then conveys the waste rock to an underground filling working surface.
Furthermore, a first conveyor belt is arranged below the coal mining machine, and the end part of the first conveyor belt is connected with a feeding inlet of the coal feeder.
Furthermore, a second conveyor belt is arranged below the coal feeder, the end part of the second conveyor belt is connected with a feeding inlet of the grading crusher, and a third conveyor belt is arranged below the grading crusher.
Further, the tip of third conveyer belt is connected with the feeding entry of shale shaker, and the below export of shale shaker is provided with the fourth conveyer belt, and the tip export of shale shaker is provided with the fifth conveyer belt.
Furthermore, the fifth conveyor belt is arranged along a roadway, the front part of the fifth conveyor belt is inclined, the rear part of the fifth conveyor belt is horizontal, an X-ray emission source is arranged above the horizontal belt at the rear part of the fifth conveyor belt, imaging characteristics of clean coal and gangue are obviously different under X-rays, the X-ray emission source is connected with a computer, the computer is connected with a high-pressure gas tank and an electromagnetic gas valve, and the electromagnetic gas valve is arranged below the fifth conveyor belt.
Furthermore, a clean coal bin and a waste rock bin are respectively arranged below the side end of the fifth conveying belt, and a dust remover is arranged above the clean coal bin and the waste rock bin.
Furthermore, a sixth conveying belt and a seventh conveying belt are arranged below the clean coal bin and the waste rock bin respectively, the sixth conveying belt is connected with the ground coal bin along a roadway, and the seventh conveying belt is connected with the underground waste rock bin and the underground filling working surface.
Further, the basis of the analysis of the computer terminal is as follows: the material property R value is only related to the equivalent atomic number of the penetrated material, the material property R value of the coal is 1.30-1.35, the material property R value of the gangue is less than 1.20, the gangue is judged to be the coal when R is greater than 1.30, and the gangue is judged to be R < 1.30.
The invention has the beneficial effects that:
1. the invention provides a coal gangue photoelectric sorting process for underground coal mine roadway arrangement based on the development of the prior art, breaks through the traditional ground laminated arrangement concept, optimizes the space-time connection of each operation unit in the process flow, constructs a lower module type compact high-efficiency sorting system for the underground coal mine, accurately matches and cooperatively optimizes the process links of coal mining, raw coal preparation, photoelectric coal gangue sorting, gangue backfilling and the like, is suitable for the coal mine with the particle size content of +150mm below 10% and brittle coal quality in the raw coal, can realize the gangue discharge from the underground coal mine source, reduces the gangue lift to the ground, saves the transportation and filling cost, and meets the requirement of environmental protection;
2. the method has the advantages that the coal gangue in the coal mine can be efficiently sorted, the gangue lifting amount can be reduced, the coal mining amount and the production efficiency can be effectively improved, the technical support is provided for the coal mine underground mining-washing-filling cooperative operation, meanwhile, the method does not generate special requirements on the coal mine underground tunnel and the underground chamber, and is suitable for the sorting process of the underground narrow underground chamber space;
3. the photoelectric coal gangue sorting process designed by the invention is arranged along an underground roadway of a coal mine, and is suitable for coal mines with the +150mm size fraction content of less than 10% and brittle coal quality in raw coal.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the coal mining machine of the present invention;
FIG. 3 is a schematic illustration of the operation of the coal feeder and the classification crusher of the present invention;
FIG. 4 is a schematic illustration of the operation of the shaker of the present invention;
FIG. 5 is a schematic diagram of the separation operation of clean coal and gangue according to the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
The photoelectric coal and gangue sorting device for underground coal mine roadway layout comprises a coal mining machine, wherein the coal mining machine aims to cut raw coal (coal and gangue mixture) of a fully-mechanized coal seam, a first conveying belt is arranged below the coal mining machine, and the end part of the first conveying belt is connected with a feeding inlet of a coal feeder. A second conveyor belt is arranged below the coal feeder, the end part of the second conveyor belt is connected with a feeding inlet of the grading crusher, and a third conveyor belt is arranged below the grading crusher.
The end part of the third conveying belt is connected with a feeding inlet of the vibrating screen, a fourth conveying belt is arranged at an outlet below the vibrating screen, a fifth conveying belt is arranged at an outlet at the end part of the vibrating screen, an X-ray emission source is arranged above the fifth conveying belt and connected with a computer, and the computer is connected with a high-pressure gas tank and an electromagnetic gas valve.
And a clean coal bin and a waste rock bin are respectively arranged below the side end of the fifth conveyor belt, and a dust remover is arranged above the clean coal bin and the waste rock bin. And a sixth conveying belt and a seventh conveying belt are respectively arranged below the clean coal bin and the waste rock bin, the sixth conveying belt is connected with the ground coal bin along a roadway, and the seventh conveying belt is connected with the underground waste rock bin and the underground filling working surface.
A photoelectric separation process for coal gangue arranged in a coal mine underground roadway comprises the following steps:
firstly, cutting raw coal (coal-gangue mixture) of a fully-mechanized coal seam by a coal mining machine, then falling into a first conveyor belt arranged below, arranging the first conveyor belt along a roadway, adjusting a certain angle, and conveying the raw coal to a coal feeder;
secondly, the coal feeder performs primary vibration loosening on the raw coal, the raw coal is uniformly fed into a second conveyor belt, the raw coal is fed into a grading crusher by the second conveyor belt, a crushing cavity opening of the grading crusher is designed to be 150mm, the size fraction smaller than 150mm smoothly passes through, and the size fraction larger than 150mm passes through after being crushed by the crushing cavity;
thirdly, conveying the crushed raw coal (smaller than 150mm) to a vibrating screen through a third conveyor belt, wherein the screen hole of the vibrating screen is 35mm, conveying the fine-grain raw coal smaller than 35mm to a ground coal preparation plant through a fourth conveyor belt after passing through the screen, and conveying the coarse-grain raw coal larger than 35mm to a fifth conveyor belt after vibrating, loosening and queuing the coarse-grain raw coal on the screen of the vibrating screen;
the fourth conveyor belt is arranged along the roadway, the front part of the fifth conveyor belt is inclined, the rear part of the fifth conveyor belt is horizontal, an X-ray emission source is arranged above the horizontal belt at the rear part of the fifth conveyor belt, the density of clean coal and gangue has important influence on the attenuation of the X-ray intensity, the difference of imaging characteristics of the clean coal and gangue is obvious under the X-ray, a computer terminal obtains the specific positions of the clean coal and gangue on the fifth conveyor belt through data analysis, and controls the opening of an electromagnetic air valve according to the falling path of the coal and gangue, the electromagnetic air valve is arranged below the fifth conveyor belt, and an air nozzle is inclined upwards and is opposite to the falling path of the material;
fifthly, when the waste rock falls, the electromagnetic air valve is opened instantly to blow the waste rock to the front waste rock bin, when the clean coal falls, the electromagnetic air valve does not act, and the clean coal falls into the clean coal bin according to the original path; the clean coal falls into a sixth conveyor belt, and the sixth conveyor belt conveys the clean coal to a ground coal bunker along the roadway;
and sixthly, the waste rock falls into a seventh conveyor belt, and the seventh conveyor belt conveys the waste rock to an underground waste rock bin for buffer storage and then conveys the waste rock to an underground filling working surface, so that repeated ineffective transportation of the waste rock is avoided, and the throughput of a mine can be effectively improved.
The identification method of the clean coal and the gangue adopted by the invention is a method based on the combined action of the gray value and the material attribute value R, the traditional method for distinguishing the clean coal and the gangue by X-rays is only identified according to the gray value, but in the actual production process, the particle size distribution range of the raw coal is very wide, the thickness shape is different in size, and the thickness also has obvious influence on the gray value, so that the coal and the gangue are difficult to accurately distinguish by only comparing the gray value; the material attribute R value is only related to the equivalent atomic number of the penetrated material, and a large amount of test data shows that the material attribute R value of coal is 1.30-1.35, and the material attribute R value of gangue is less than 1.20.
The invention provides a coal gangue photoelectric sorting process for underground coal mine roadway arrangement based on the development of the prior art, breaks through the traditional ground laminated arrangement concept, optimizes the space-time connection of each operation unit in the process flow, constructs a lower module type compact high-efficiency sorting system for the coal mine, accurately matches and cooperatively optimizes the process links of coal mining, raw coal preparation, coal gangue photoelectric sorting, gangue backfilling and the like, is suitable for coal mines with the particle size content of +150mm below 10% and fragile coal quality in the raw coal, can realize the gangue discharge from the underground coal mine source, reduces the gangue lift to the ground, saves the transportation and filling cost, and meets the requirement of environmental protection.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A photoelectric separation process for coal gangue arranged in a coal mine underground roadway is characterized by comprising the following steps:
the method comprises the following steps that firstly, a coal mining machine cuts raw coal of a fully-mechanized coal mining seam, the raw coal falls into a first conveyor belt arranged below the coal mining machine, the first conveyor belt is arranged along a roadway, angle adjustment is carried out, and the raw coal is conveyed to a coal feeder;
secondly, the coal feeder performs primary vibration loosening on raw coal, the uniform raw coal is fed into a second conveyor belt, the second conveyor belt feeds the raw coal into a grading crusher, the crushing cavity opening of the grading crusher is designed to be 150mm, the size fraction smaller than 150mm smoothly passes through, and the size fraction larger than 150mm passes through after being crushed by the extrusion of a crushing cavity;
thirdly, conveying the crushed raw coal to a vibrating screen through a third conveyor belt, wherein the screen hole of the vibrating screen is 35mm, fine-grain raw coal smaller than 35mm is conveyed to a ground coal preparation plant through a fourth conveyor belt after being screened, and coarse-grain raw coal larger than 35mm is conveyed to a fifth conveyor belt after being vibrated, loosened and queued on the vibrating screen;
fourthly, the computer terminal obtains the specific positions of the clean coal and the gangue on the fifth conveyor belt through data analysis, and controls the opening of the electromagnetic air valve according to the falling path of the coal and the gangue, and the air nozzle inclines upwards and is opposite to the falling path of the material;
fifthly, when the waste rock falls, the electromagnetic air valve is instantly opened to blow the waste rock to the front waste rock bin, when clean coal falls, the electromagnetic air valve does not act, the clean coal falls into the clean coal bin according to the original path, the clean coal falls into a sixth conveyor belt, and the sixth conveyor belt conveys the clean coal to the ground coal bin along the roadway;
and sixthly, the waste rock falls into a seventh conveyor belt, and the seventh conveyor belt conveys the waste rock to an underground waste rock bin for buffer storage and then conveys the waste rock to an underground filling working surface.
2. The photoelectric separation process for the coal gangue in the underground roadway layout of the coal mine as claimed in claim 1, wherein a first conveyor belt is arranged below the coal mining machine, and the end part of the first conveyor belt is connected with a feeding inlet of a coal feeder.
3. The photoelectric separation process for the coal gangue in the underground roadway arrangement of the coal mine as claimed in claim 2, wherein a second conveyor belt is arranged below the coal feeder, the end part of the second conveyor belt is connected with a feeding inlet of a grading crusher, and a third conveyor belt is arranged below the grading crusher.
4. The photoelectric separation process for the coal gangue as the underground coal mine roadway layout as claimed in claim 3, wherein the end of the third conveyor belt is connected with the feeding inlet of the vibrating screen, the fourth conveyor belt is arranged at the lower outlet of the vibrating screen, and the fifth conveyor belt is arranged at the end outlet of the vibrating screen.
5. The photoelectric coal gangue sorting process for the underground coal mine roadway arrangement according to claim 4, wherein the fifth conveyor belt is arranged along the roadway, the front part of the fifth conveyor belt is inclined, the rear part of the fifth conveyor belt is horizontal, an X-ray emission source is arranged above a horizontal belt at the rear part of the fifth conveyor belt, the difference of imaging characteristics of clean coal and gangue is obvious under X-rays, the X-ray emission source is connected with a computer, the computer is connected with a high-pressure gas tank and an electromagnetic gas valve, and the electromagnetic gas valve is arranged below the fifth conveyor belt.
6. The photoelectric coal gangue sorting process for the underground coal mine roadway layout according to claim 5, wherein a clean coal bin and a gangue bin are respectively arranged below the side end of the fifth conveyor belt, and a dust remover is arranged above the clean coal bin and the gangue bin.
7. The photoelectric separation process of the coal gangue as claimed in claim 6, wherein a sixth conveyor belt and a seventh conveyor belt are respectively arranged under the clean coal bunker and the gangue bunker, the sixth conveyor belt is connected with the ground coal bunker along the roadway, and the seventh conveyor belt is connected with the underground gangue bunker and the underground filling working surface.
8. The photoelectric separation process of the coal gangue for the underground coal mine roadway layout as claimed in claim 1, wherein the basis of the analysis of the computer terminal is as follows: the material property R value is only related to the equivalent atomic number of the penetrated material, the material property R value of the coal is 1.30-1.35, the material property R value of the gangue is less than 1.20, the gangue is judged to be the coal when R is greater than 1.30, and the gangue is judged to be R < 1.30.
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| CN112264330A (en) * | 2020-10-22 | 2021-01-26 | 安徽理工大学 | Remove end coal gangue photoelectric separation system |
| CN112588609A (en) * | 2020-12-11 | 2021-04-02 | 精英数智科技股份有限公司 | Coal gangue sorting method and device and electronic equipment |
| CN115007308A (en) * | 2022-06-02 | 2022-09-06 | 北京科技大学 | Gravity separation effect evaluation device and method based on intelligent ore |
| CN114951041A (en) * | 2022-06-25 | 2022-08-30 | 昆明理工大学 | Photoelectric sorting device for mineral separation |
| CN114951041B (en) * | 2022-06-25 | 2024-05-10 | 昆明理工大学 | Photoelectric sorting device for mineral separation |
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