Whole tailings depth controllable homogeneous concentration method

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...

AI Technical Summary

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 tailings is 65% to 70%, which cannot meet the needs of mine filling

The filter cake with a concentration of ≥90% is used for mine filling. It needs to add water again to reach the required concentration before it can be used for mine filling. The process is more complicated and increases energy consumption.

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