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Simple device and method for physically separating coal slime of power coal plant

A physical separation and dynamic technology, applied in solid separation, grain processing, flotation, etc., can solve the problems of poor flotation, high cost, and low flotation separation efficiency.

Active Publication Date: 2020-07-31
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for thermal coal, due to the poor floatability of coal particles and low flotation separation efficiency, there is currently no effective process for coal slime separation in thermal coal plants
At the same time, the difficulty of flotation of coal slime is closely related to the coal quality, the type of gangue, and the characteristics of coal slime embedded distribution. For different raw coals, roughly the same flotation process and agents are used, resulting in large differences in separation efficiency, while some The cost of developing new flotation processes and reagents in a targeted manner is huge

Method used

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  • Simple device and method for physically separating coal slime of power coal plant
  • Simple device and method for physically separating coal slime of power coal plant
  • Simple device and method for physically separating coal slime of power coal plant

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Embodiment Construction

[0021] The present invention is described in detail below in conjunction with accompanying drawing:

[0022] see figure 1 , a simple device for physically separating coal slime in thermal coal plants, including a mud tank 1, the outlet of the lower part of the mud tank 1 is connected to a high-pressure pump 2 through a high-pressure pump inlet pipe, and the high-pressure pump 2 is provided with a current overload protection device 3, and the high-pressure pump 2 The outlet of the spray gun 4 is connected to the spray gun 4 through the high-pressure pump outlet pipe. The spray gun 4 is provided with a flow monitor 5. The tip outlet of the spray gun 4 is inserted into the entrance of the middle part of the mud tank 1. The mud tank 1 is provided with a bubble scraper 6. The mud tank 1 There is also a foam outlet that cooperates with the bubble scraper 6, and a collection tank 7 is arranged at the foam outlet. The diameter of the high-pressure pump inlet pipe is 2-4 cm, and the le...

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Abstract

The invention discloses a simple device and method for physically separating coal slime of a power coal plant. The simple device comprises a slurry tank, a lower outlet of the slurry tank is connectedto a high-pressure pump through a high-pressure pump water inlet pipe, an outlet of the high-pressure pump is connected to a spray gun through a high-pressure pump water outlet pipe, a tip outlet ofthe spray gun is inserted into a middle inlet of the slurry tank, and a bubble scraper is arranged in the slurry tank. The device is simple in structure and convenient to operate, and coal and ganguein the coal slime can be separated just by physical means.

Description

technical field [0001] The invention belongs to the field of ore dressing technology, comprehensive utilization technology of low-grade resources and tailings resources, and industrial wastewater treatment and recycling technology, and specifically relates to a simple device and method for physically separating coal slime in thermal coal plants. Background technique [0002] With the improvement of coal mining mechanization, the content of fine-grained coal less than 0.5mm in raw coal is increasing year by year, and the content of coal slurry produced by coal preparation is huge every year. The direct discharge of coal slurry seriously endangers the ecological environment. Efficient separation has important environmental and economic benefits. At present, flotation technology is the most widely used coal slime separation process. This process utilizes the wettability difference between coal and gangue surfaces. By adding flotation agents to the coal slurry and creating air b...

Claims

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Application Information

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IPC IPC(8): B02C19/06B03D1/02
CPCB02C19/06B03D1/02
Inventor 单智伟任颖毛路遥
Owner XI AN JIAOTONG UNIV
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