High-efficient process system for slime water through drifting separation

Abstract

The invention discloses a high-efficient process system for slime water through drifting separation. The system comprises a slime water mixing unit, a medicament adding system, a high-efficient drifting separator and a density modifying machine. The slime water passes through a slime water mixing barrel. The slime water is added with cation medicaments before entering into the mixing barrel, wherein the medicament adding system adds the medicaments for the first time, and the slime water flows out of the mixing barrel, passes through a pipe mixing device, and then is added with anion medicaments as a second medicament adding, wherein the slime water is fully mixed with the medicaments under the action of the pipe mixing device. The slime water passes through the slime water mixing barrel and flows to the high-efficient drifting separator for further separation and deposition of the slime water, wherein by using effects of an inclined tube in the high-efficient drifting separator, large particulate matters sink to the bottom, thereby forming underflow condensation precipitation, and fine particulate matters suspended in water (mainly ash) combine with micro-bubbles generated by an air flotation device and float to the liquid surface, thereby forming floating slag which is then collected by a slag scraper and a slag collector and discharged out of a groove. The treated discharge water is discharged to a cyclic pool through a water collection device. The underflow condensation precipitation is pumped to the density modifying machine for further compression and buffering through a slag and slurry pump, the compressed slime is sent into a press filtration workshop through the slag and slurry pump, and a supernatant is discharged to the cyclic pool.

Description

Technical field: [0001] The invention relates to a technology applied in the field of wet coal preparation and slime water treatment, which belongs to the field of water treatment engineering, such as a new technology used in the field of coal slime water treatment in coal preparation plants and other mine tailings water treatment fields. Background technique: [0002] At present, the slime water treatment technology of the coal preparation plant mainly uses the traditional rake-type thickener to process the slime water. This traditional rake-type thickener has the following four disadvantages: [0003] 1. There is a rake pressure problem in the traditional rake-lifting concentrator. Once a fault occurs, it will affect the normal operation and production of the entire coal mine. [0004] 2. Due to the limitation of certain objective conditions, the traditional rake-type concentrator needs special personnel to take care of and maintain it, and its manual maintenance cost is ...

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Problems solved by technology

[0004] 2. Due to the limitation of certain objective conditions, the traditional rake-type concentrator needs to be supervised and maintained by a special person, and its manual maintenance cost is relatively high

[0005] 3. The traditional rake type concentrator occupies a large area and the cost of civil construction is high

[0006] 4. Traditional concentrators can only remove solid particles with a higher density than water, but cannot remove ash with a lower density than water. The ash will eventually form scum and gather on the water surface or flow out with the water.

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