Whole tailings depth controllable homogeneous concentration method

A full tailings and depth technology, applied in separation methods, chemical instruments and methods, earth square drilling and mining, etc., can solve problems such as increased energy consumption, complex processes, and inability to meet the needs of mine filling, and achieves low energy consumption and particle size reduction. The effect of uniform grade composition and stable concentration

Inactive Publication Date: 2008-07-09
YUNNAN CHIHONG ZINC & GERMANIUM
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Problems solved by technology

The filter is filtered into a cake, and the tailing mortar released by the thickener passes through a ceramic filter, or a belt filter, or a filter press, and the moisture content of the filter cake is ≤10% (concentration is ≥90%). , before reaching ≥90%, the process is complex
[0003] The concentration of

Method used

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  • Whole tailings depth controllable homogeneous concentration method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: The concentration of the whole tailings mortar in mineral processing is 10% to 25%. After being concentrated in a CH thickener, the concentration reaches more than 75%.

[0025] When using the CH thickener for the first operation, fill the CH thickener with water first, and stop adding water to the CH thickener after the water flows out from the overflow weir. Then add the whole tailing mortar to the CH thickener, the mortar concentration is 10%~25%, and continuously transport the tailing mortar to the CH thickener. The operator closely monitors the change of the concentration of the underflow mortar, and adjusts according to the change of the concentration at the bottom of the CH thickener. Controllable valves, water supply and underflow circulation, manual control or automatic control, to ensure uniform concentration rise, after 16 hours of settlement, CH thickener underflow concentration reaches 74.5-76.5%, tailing mortar particle size distribution is unifo...

Embodiment 2

[0028] Example 2: Mortar with a thickness of 1 meter is stored in the CH thickener, and the concentration of the whole tailing mortar in the beneficiation is 10% to 25%. After being concentrated in the CH thickener, the concentration reaches more than 75%.

[0029] Continuously add full-tailed mortar to the CH thickener, with a mortar concentration of 10% to 25%, and continuously deliver the tailing mortar to the CH thickener. The operator closely monitors the change in the concentration of the underflow mortar, and adjusts according to the change in the concentration at the bottom of the CH thickener. Controllable valves, water supply and underflow circulation, manual control or automatic control, to ensure a uniform increase in concentration, after the thickness of the slurry in the CH thickener reaches 2.5 meters, the underflow concentration of the CH thickener reaches 74.5-76.5%, and the particle size distribution of the tailing mortar uniform, and to ensure a uniform and c...

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Abstract

The invention provides a whole tailing depth controllable uniform condensation method, which comprises the following processing steps: concentration of whole tailing ranges from 10 percent to 30 percent; the whole tailing is fed into a buffering agitator tank for homogenization and stabilization; the whole tailing flows into a CH thickener; flocculant with the concentration of 0.5 percent is added to the full tailing; an underflow pump is adopted for loop control to keep the mortar uniform; 12 hours later, the uniform concentration of the mortar reaches 74.5 percent to 76.5 percent; the uniform whole tailing is discharged and fed to an agitator; the uniform whole tailing is mixed with granulated blastfurnace slag, cement and water and becomes cream with the concentration of 78 percent to 82 percent; the cream is fed to a downhole goaf to fill the downhole goaf. The invention has the remarkable advantages of simple process flow, high concentration efficiency, small dissipation of energy and stable concentration of the whole tailing.

Description

technical field [0001] The invention relates to a method for controlling the depth and homogeneous concentration of full tailings, which belongs to the technical field of mine filling and mining. Background technique [0002] Full tailings are the residues discarded after mine beneficiation. In order to reduce the stockpiling on the surface, the full tailings are often transported to the underground filling goaf by pipeline, which reduces the pollution caused by surface stockpiling, and at the same time keeps the goaf after filling. safe working space. The whole tailings mortar is concentrated or filtered. Generally, sand bins, thickeners, and filters are used to remove the water in it, increase the concentration, or filter into cakes. Sand bin concentration method, after the whole tailings mortar is sent into the sand bin, the concentration increases after natural settlement, and the concentration reaches 65% to 70%. Grain-sized tailings, the concentration gradually becom...

Claims

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Application Information

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IPC IPC(8): E21F15/08B01D21/00
Inventor 王洪江陈进吉学文郭然彭怀生崔茂金郑勤龙杨胜高严庆文贺昶友高士田陈华国沈家华黄兆来黄久顺郑有富曾普海玉拾昭
Owner YUNNAN CHIHONG ZINC & GERMANIUM
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