Three-product coal slurry flotation machine and system

Abstract

The invention discloses a three-product coal slurry flotation machine and a three-product coal slurry flotation system. The three-product coal slurry flotation machine is characterized in that raw coal slurry is divided into three products, i.e. flotation clean coal, flotation middling coal and waste coal slurry through arranging a primary concentration device and a secondary middle flotation device. During work, the ash content of the flotation clean coal can be adjusted at any time according to needs, and the ash content of the waste coal slurry is adjusted at any time according to needs through adjusting the ash content of the flotation middling coal in the secondary middle flotation device. After the three-product coal slurry flotation machine and the three-product coal slurry flotation system are applied to the flotation of the coal slurry, the ash content of flotation waste coal is improved to be higher while the ash content of the flotation clean coal is reduced to be lower. The three-product coal slurry flotation machine and the three-product coal slurry flotation system have the advantages of high recovery rate, less total investment, simpler system and lower operating cost, and the improvement of the resource utilization is greatly facilitated.

Description

technical field [0001] The invention relates to a coal slime equipment and system, in particular to a three-product coal slime flotation machine and system. Background technique [0002] At present, coal slime flotation equipment and systems commonly used in coal preparation plants at home and abroad, such as shallow tank mechanical agitation flotation machines and systems, deep tank mechanical agitation flotation machines and systems, jet flotation machines and systems, barrels Type flotation machine and system, flotation column type and system, flotation bed type and system, etc., only produce clean coal and tailing coal. The ash content of clean coal during production can be adjusted as needed, and the tailing coal Ash content can also be adjusted as needed, but both cannot be adjusted at the same time. That is to say, in the case of a certain input coal slurry, to reduce the ash content of the clean coal, a part of the high-ash clean coal must be driven into the tailing...

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Problems solved by technology

[0002] At present, coal slime flotation equipment and systems commonly used in coal preparation plants at home and abroad, such as shallow tank mechanical agitation flotation machines and systems, deep tank mechanical agitation flotation machines and systems, jet flotation machines and systems, barrels Type flotation machine and system, flotation column type and system, flotation bed type and system, etc., only produce clean coal and tailing coal. The ash content of clean coal during production can be adjusted as needed, and the tailing coal Ash can also be adjusted as needed, but both cannot be adjusted at the same time

That is to say, in the case of a certain input coal slurry, to reduce the ash content of the clean coal, a part of the high-ash clean coal must be driven into the tailing coal, and the ash content of the tailing coal is correspondingly reduced; Under certain circumstances, to increase the ash content of the tailing coal, a part of the high-ash clean coal must be driven into the clean coal, which correspondingly increases the ash content of the clean coal; it is necessary to ensure that the ash content of the clean coal is reduced to a lower level, and It is impossible to ensure that the ash content of the tailing coal is increased to a higher level; with the advancement of technology, the price of coal rises, and this method has the disadvantages of waste of resources and reduction of economic benefits

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