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Separation recycling system and separation recycling process of wide size fraction coal slime

A recovery system and coal slime technology, used in flotation, solid separation, wet separation, etc., can solve the problems of complex sorting process, environmental hazards, high cost, etc., achieve wide application prospects, reduce pollution, and ensure continuous sexual effect

Active Publication Date: 2019-09-06
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above analysis, the present invention aims to provide a wide-grained coal slime sorting and recovery system and a sorting recovery process to solve the existing wide-grained coal slime sorting process complexity, high cost, high energy consumption, environmental hazards

Method used

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  • Separation recycling system and separation recycling process of wide size fraction coal slime
  • Separation recycling system and separation recycling process of wide size fraction coal slime

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Embodiment 1

[0034] A specific embodiment of the present invention, such as figure 1 As shown, a sorting and recovery system for wide-grained coal slime is disclosed. A mixing tank 1, a hydraulic flotation machine 5, a three-product cyclone classifying screen 8, a pulp preprocessor 11 and a flotation tank are arranged along the sorting pipeline. Column selection 12; the first feeding pump 2 is arranged between the mixing tank 1 and the hydraulic flotation machine 5; the top of the hydraulic flotation machine 5 is provided with a feed inlet, and the feed inlet is connected with the first feed pump 2, and hydraulic The upper side of the flotation machine 5 is provided with an overflow port, the lower part of the hydraulic flotation machine 5 is a conical structure, the upper side of the conical structure is provided with a fluidization nozzle, and the bottom of the hydraulic flotation machine 5 is provided with an underflow port The first buffer tank 6 is arranged between the hydraulic flota...

Embodiment 2

[0044] A specific embodiment of the present invention, such as figure 2 As shown, a sorting and recycling process of wide-grained coal slime is disclosed. For example, the device provided in Example 1 is used. The sorting and recycling process includes the following steps:

[0045] Step 1: Feed the floating coal slime a into the mixing tank, add water and collector to the mixing tank for the floating coal slime and stir to make a slurry, after mixing evenly, the first feeding pump continuously, uniformly and stably feeds the hydraulic Flotation machine;

[0046] Preferably, the pulp concentration in step 1 is 400-600g / L. If the pulp concentration is too low, the processing capacity is too low, the consumption of chemicals is large, and the production cost is high; if the pulp concentration is too high, the resistance between particles will also increase, which is not conducive to disturbing the settlement. Increase the ash content of clean coal and deteriorate the separatio...

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Abstract

The invention relates to a separation recycling system and a separation recycling process of wide size fraction coal slime and belongs to the field of coal separation processing. The problems that theseparation recycling process of the wide size fraction coal slime in the prior art is complicated in technological process, and high in cost and energy consumption, and causes harm to the environmentare solved. The separation recycling system is provided with a stirring bucket, a hydraulic powder flotation machine, a three-product cyclone classification screen, an ore pulp preprocessor and a flotation column along a separation pipeline; a first buffering bucket is arranged between the hydraulic power flotation machine and the three-product cyclone classification screen; a second buffering bucket is arranged between the three-product cyclone classification screen and the ore pulp preprocessor; and the ore pulp preprocessor is connected with the flotation column. The separation recycling process includes the following steps that the coal slime in flotation is supplied into the stirring bucket, and is stirred and deployed into ore pulp to be supplied into the hydraulic power flotation machine; first time classification is performed; coarse particle concentrate, micro fine particle coal slime and fine particle coal slime are classified; and accurate separation of the fine particle coal slime is performed. The separation recycling system and the separation recycling process of the wide size fraction coal slime achieve wide size fraction and short process continuous coal slime separation.

Description

technical field [0001] The invention relates to the technical field of coal sorting and processing, in particular to a wide-grained coal slime sorting and recovery system and a sorting and recovery process. Background technique [0002] As the main energy source in our country, coal has made great contributions to the national economic and social development. Due to the problems of extensive coal utilization, low energy efficiency, heavy pollution, and low comprehensive utilization of secondary resources, the development of my country's coal industry will be further severely restricted by resources and the environment in the future. Therefore, by improving the level of coal sorting, the clean and efficient utilization of coal and energy conservation and emission reduction can be realized to ensure the sustainable development of the coal industry under the new normal of my country's economic development. Coal sorting and processing is the source and basis of clean coal techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B7/00B03B1/00B03D1/02B03D1/14B03D1/004
CPCB03B1/00B03B7/00B03B9/005B03D1/004B03D1/02B03D1/14B03D2201/02
Inventor 邢耀文丁世豪桂夏辉张友飞曹亦俊罗佳倩李明郭芳余徐梦迪夏阳超杨自立
Owner CHINA UNIV OF MINING & TECH
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