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Paste thickener bottom flow circulation homogenizing device

A paste thickener and homogenization technology, which is applied to chemical instruments and methods, settling tanks, separation methods, etc., can solve the problems of the thickener pressing and harrowing down, unable to control high-concentration underflow, etc., to achieve simple equipment and solve underflow The effect of loop control

Active Publication Date: 2015-10-14
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing underflow circulation mode of the paste thickener cannot effectively control the high-concentration underflow, which often causes the thickener to press the rake to shut down the accident. An effective paste thickener underflow circulation homogenization device is urgently needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, after the low-concentration full tailings mortar is thickened by the paste thickener 1, the high-concentration full tailings bottom flow is discharged through the collection well 2, and the bottom flow pump 3 is transported to the thickener through the circulation pipeline for continuous circulation.

[0021] During the transportation process, the underflow concentration value is obtained by the nucleon concentration meter 4. When the underflow concentration is 69% to 71%, adjust the speed of the underflow pump 3 so that the reading of the flowmeter 5 is 50m 3 / h~100 3 / h, close valve 2 7, open valve 1 6, so that the bottom flow of the whole tailings flows through the homogenizer 8, the inner diameter of the pipeline 12 of the homogenizer 8 is 220 mm, through the stirring blade 13, open the valve 3 9, close the valve Four 10, realize the low-level homogenization cycle of the underflow concentration. In this process, the reading of the data o...

Embodiment 2

[0024] Such as figure 1 As shown, after the low-concentration full tailings mortar is thickened by the paste thickener 1, the high-concentration full tailings bottom flow is discharged through the collection well 2, and the bottom flow pump 3 is transported to the thickener through the circulation pipeline for continuous circulation.

[0025] During the conveying process, the underflow concentration value is obtained by the nucleon concentration meter 4, and when the underflow concentration is 71% to 75%, adjust the speed of the underflow pump 3 so that the reading of the flowmeter 5 is greater than 100 3 / h, close valve two 7, open valve one 6, make the whole tailings underflow flow through in the homogenizer 8, the inner diameter of the pipeline 12 of the homogenizer 8 is 250mm, the underflow is stirred and homogenized by the stirring blade 13, Close valve three 9 and open valve four 10 to realize the high-level homogenization cycle of underflow concentration. In this proce...

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Abstract

The invention provides a paste thickener bottom flow circulation homogenizing device belonging to the field of tailing paste treatment and mineral engineering. The device comprises a bottom flow pump, a nucleon concentration meter, a flowmeter, four valves, a homogenizing device body and a bottom flow circulation pipeline, wherein one end of the bottom flow pump is connected with a material collection well under a paste thickener; the other end of the bottom flow pump is connected with the nucleon concentration meter; the nucleon concentration meter is sequentially connected with the flowmeter, the valve I and the homogenizing device body in series; the valve II is positioned between the flowmeter and the valve I; the valve III and the valve IV are connected in parallel. The homogenizing device body comprises a flange, a pipeline and stirring blades. The rotation speed of the bottom flow pump is adjusted by the bottom flow concentration value and bottom flow value which are obtained in real time by adopting the nucleon concentration meter and the flowmeter so as to selectively switch on the valve III or the valve IV. The paste thickener bottom flow circulation homogenizing device provided by the invention is simple in structure and capable of effectively achieving the homogenization and controllable circulation of bottom flow of the paste thickener, so that the occurrence of raking pressing and stopping accidents of the paste thickener is avoided.

Description

technical field [0001] The invention relates to the technical field of tailings paste disposal and mining engineering, in particular to an underflow circulation homogenization device of a paste thickener. Background technique [0002] After the ore extracted from the mine is processed, the solid waste generated is called tailings, which is usually discharged in the form of low-concentration tailings. The discharge of low-concentration tailings slurry often causes many problems such as environmental pollution, waste of water resources, and dam break of tailings ponds. Therefore, the preparation technology of full tailings paste has emerged as the times require, and the paste thickener is the key equipment of this technology. The paste thickener can thicken low-concentration tailings into a high-concentration full-tailing paste with low moisture content at one time through flocculation and sedimentation. The underflow circulation effect of the paste thickener directly affects ...

Claims

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Application Information

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IPC IPC(8): B01D21/02B01D21/01B01D21/32
Inventor 吴爱祥王贻明王春来张晋军孙伟周升平杨清平王洪江胡文达尹升华施发伍李辉韩斌沈家华刘晓辉韩振雁龚开福王少勇
Owner UNIV OF SCI & TECH BEIJING
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