An improved process for non-pressure three-product and coal slime dense medium separation based on constant-low split flow

Abstract

The present invention discloses an improved process for non-pressure three-product and coal slime dense medium separation based on constant-low split flow, which specifically includes the following steps: (a) one-stage separation; (b) 1 ) a section of clean coal deintermediation; (b 2 ) a medium coal deintermediation; (b 3 ) first-stage gangue removal; (c) second-stage slime separation; (d) 1 ) Second stage clean coal deintermediation; (d 2 ) Coal deintermediation in the second section; (e 1 ) clean coal magnetic separation; (e 2 ) Medium coal magnetic separation; (e 3 ) gangue magnetic separation; (f) a section of co-media deployment. The improved process of the invention has high sorting efficiency, low medium consumption, low operating cost, less investment, strong implementability and remarkable economic benefits.

Description

Technical field [0001] The invention belongs to the field of coal technology. Specifically, it is involved in reomscriber coal concentration processes, and more particularly to a constant-low-diverse pressure-free three-product and coal slime recommerse rejection process. Background technique [0002] The reomstrial coal coal selection is high, the degree of automation is high, and the sorting density is convenient to adjust, which is the leading process of coal sorting. Among them, the non-pressure-free three-product + coal mortar resection process is applied due to its simple process, less tester, less pipe wear, and low selection cost, and is applied in my country's many coking coal chollars. The process uses a single low-density retrofit suspension once sorted the quality qualified fine coal, medium coal and vermiculite, small diameter cyclone group to syndmallless diversion sorting, and the lower limit of the sorting particle size can be reduced to about 0.25 mm; The thin su...

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Problems solved by technology

[0004] Aiming at the problems of high medium consumption and unstable coal slime heavy medium separation existing in the existing non-deliming and pressure-free three-product + coal slime heavy medium separation process, the present invention provides a simple process, easy operation and low medium consumption , stable operation, high separation accuracy and low operation cost based on the constant-low split flow non-pressure three-product and coal slime dense medium separation improvement process

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