Treatment and recovery process of slime water

Abstract

The invention discloses a treatment and recovery process of slime water, which comprises a primary slime water agitating vessel (1), a primary slime water pump (2), a primary swirler (3), a secondary slime water agitating vessel (4), a secondary slime water pump (5), a secondary swirler (6), a filter press (7) and a circulating water tank (8). The process comprises the steps that slime water enters the primary slime water agitating vessel (1) and then is fed into the primary swirler (3) through the primary slime water pump (2) during the production of a coal preparation plant; products at the bottom of the primary swirler (3) enter the filter press (7), so that coal slime is recovered; overflow products of the primary swirler (3) enters the secondary slime water agitating vessel (4) and then are fed into the secondary swirler (6) through the secondary slime water pump (5); products at the bottom of the secondary swirler (6) enter the primary slime water agitating vessel (1); and overflow products of the secondary swirler (6) enter the circulating water tank (8) to be used for producing circulating water in the coal preparation plant.

Description

1. Technical field [0001] The invention relates to a coal preparation production process, in particular to a coal slime water treatment and recovery process. 2. Background technology [0002] The slime water produced in the production process of the coal preparation plant is generally concentrated by a thickener, and then dehydrated and recovered by a filter press to obtain low-concentration circulating water. However, in the production process, the thickener production is often unstable, such as production accidents such as rake pressing, which adversely affect the normal production of the coal preparation plant. It was also proposed a two-stage process for processing and recovering slime water, that is, after the slime water is first concentrated by the thickening cyclone, the underflow of the thickening cyclone enters the centrifuge for dehydration; the overflow of the thickening cyclone enters the thickener, and then passes through the thickener. After thickening, the u...

AI Technical Summary

Problems solved by technology

Such a process facilitates the treatment and recovery of slime water, but undoubtedly increases the equipment and thus increases the cost

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