Method and device for separating coal from gangue in pit by utilizing inclined belt conveyor

A belt conveyor and waste rock technology, applied in solid separation, chemical instruments and methods, classification, etc., can solve problems such as waste of land resources, environmental hazards, mudification, etc., achieve significant economic and social benefits, and reduce workload , the effect of small space

Inactive Publication Date: 2021-05-25
TAIYUAN UNIV OF TECH
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  • Claims
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Problems solved by technology

And this has many disadvantages and hazards. It takes a lot of extra energy to lift the gangue from the underground; it also consumes a lot of resources in the coal washing process; and the stacking of the separated gangue not only wastes land resources, but also spontaneous combustion and rain. , mudification, etc., causing serious harm to the environment

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  • Method and device for separating coal from gangue in pit by utilizing inclined belt conveyor
  • Method and device for separating coal from gangue in pit by utilizing inclined belt conveyor

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Embodiment Construction

[0031] As shown, the present invention includes horizontal belt conveyors and inclined belt conveyors. Among them, the horizontal belt conveyor 2 transports the raw coal 1 from the working face. When the raw coal 1 moves to the right to the material outlet 3 of the horizontal belt conveyor, it will fall; the inclined belt conveyor 4 is located in the horizontal belt conveyor. Below the conveyor 2, when the raw coal 1 falls on the inclined belt conveyor 4, it will slide relative to the conveyor belt. Due to the different friction coefficients between coal, gangue and the conveyor belt, the sliding friction force on the two is different, so the resultant force direction along the conveyor belt is different, so the acceleration direction of the two is also different; Due to the acceleration of the machine 4, the coal will be thrown out at the material outlet 5 of the inclined belt conveyor; because the gangue has the opposite acceleration, it will be thrown out at the material ou...

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Abstract

The invention provides a method and device for separating coal from gangue in the pit by utilizing an inclined belt conveyor. The coal and the gangue are separated in the pit by utilizing a physical principle. The device mainly comprises two belt conveyors, wherein one belt conveyor is a horizontally-running belt conveyor and is mainly used for conveying the coal and the gangue from a working surface; and the other belt conveyor is an obliquely-running belt conveyor and is mainly used for separating the coal from the gangue. According to the method and device, the coal and the gangue have accelerated speeds in different directions on the inclined belt conveyor by utilizing different friction coefficients among the coal, the gangue and a conveying belt, so that the running directions of the coal and the gangue on the inclined belt conveyor are opposite; and the coal can be thrown out from the upper end of the inclined belt conveyor, and the gangue can be thrown out from the lower end of the inclined belt conveyor. The device for separating the coal from the gangue in the pit has the advantages of convenience in installation, simple structure, safety and reliability in running, small used space and the like; and the gangue can be effectively prevented from being discharged from a well, and the gangue can be directly backfilled into a goaf.

Description

technical field [0001] The invention relates to a method and a device for separating coal and gangue underground by using an inclined belt conveyor, and is a device that can be directly applied to separating coal and gangue underground in mines. Background technique [0002] In the process of coal mining, due to the mixing of a large amount of gangue in the top and bottom boards and coal seams, the mined coal contains a large amount of gangue. These coals cannot be used directly and need to be treated with gangue removal. [0003] In the traditional coal mining process, the coal containing gangue is treated by screening it in a coal preparation plant after being transported out of the ground. And this has many disadvantages and hazards. It takes a lot of extra energy to lift the gangue from the underground; it also consumes a lot of resources in the coal washing process; and the stacking of the separated gangue not only wastes land resources, but also spontaneous combustion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B13/11B07B13/14
CPCB07B13/11B07B13/14
Inventor 王朋飞樊一江冯国瑞郝晨良白锦文戚庭野文晓泽刘佳男刘镇书陈可夯吴妍张海龙王天勋高梦男
Owner TAIYUAN UNIV OF TECH
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