A compact multi-stage rakeless thickener

Abstract

The invention relates to a compact multi-stage rakeless thickening device, which includes a feeding assembly, a diversion assembly, and a clean coal collection assembly. The diversion assembly also includes a central tank body. The upper part of the tank body flows to the middle of the central tank body, and then diffuses to the surroundings. After the reaction, the residual mineralized air bubbles and fine coal slime move upward from the inner side wall of the central tank body into the clean coal collection assembly, which is located at Above the outlet of the diversion assembly, the clean coal collection assembly is sequentially provided with an edge feeding area and a defoaming area from the outside to the inside, and the clean coal collection assembly also includes a flow diversion settlement area arranged on the outer wall of the central tank body, The coal slime water after defoaming in the defoaming zone is output from the middle of the central tank body through the first overflow discharge pipe to the entrance of the diversion and settlement zone, and the diversion and settlement zone is a layered diversion and settlement zone. The device realizes the structural integration of traditional multi-stage thickening pools, greatly reducing the floor area of ​​traditional multi-stage thickening pools.

Description

technical field [0001] The invention relates to the field of coal slime water treatment, in particular to a compact multi-stage rakeless thickening device. Background technique [0002] In the coal washing process, the slime water treatment, as the finishing link of the washing process, is the key to the effective collection and utilization of coal slime and the closed cycle of washing water, and the thickening device as the carrier of coal slime water treatment and the key equipment for processing has been obtained It is widely used and is of great significance to the closed circulation of washing water, the full utilization of underflow concentrate and environmental protection. [0003] With the integration and large-scale of coal washing plants, the processing capacity has been greatly increased, and the output of coal slime water and the content of fine slime in coal slime water have also increased significantly. Some equipment has reached the specifications of 45m and ...

AI Technical Summary

Problems solved by technology

[0003] With the integration and large-scale of coal washing plants, the processing capacity has been greatly increased, and the output of coal slime water and the content of fine slime in coal slime water have also increased significantly. Some equipment has reached the specifications of 45m and above, but due to the finer fine mud and the increase in processing capacity, the settlement time period is poor, and the settlement effect is poor. The fine mud in the washing circulating water cannot be effectively removed, which will cause coal The quality of washing is seriously affected, so many coal preparation plants have added two-stage concentration or even three-stage concentration to further purify the washing circulating water, which will take up a lot of land, and there are still residual flotation stages in the slime water that have not been completely The recovered coal foam, resulting in the waste of clean coal, resulting in economic losses

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