Method for continuously stoping water-containing tailings

Abstract

The invention discloses a method for continuously stoping water-containing tailings. The method comprises the following steps of: S1, determining a sand dredger, dividing a mining belt, selecting a cutter suction type sand dredger in the scheme according to the characteristics of finer and more uniform tailings granularity, determining the daily tailings recovery quantity of the sand dredger according to the daily treatment quantity of a separation plant, and considering 10% of overdraft quantity, wherein the width of an excavation belt is 1.2-1.4 times of the length of the cutter suction type sand dredger; S2, tailings stoping and conveying: placing the determined cutter suction type sand dredger in a water catchment area of a tailings pond, and conveying ore pulp to a thickener through an overwater floating pipe and a shoreside pipeline by means of a mortar pump; and S3, control of ore pulp concentration: increasing the ore pulp concentration to 40% or above through a thickener, and after the ore pulp concentration is kept stable, entering an ore dressing process. The cutter suction type sand dredger is creatively combined with a thickener in a mineral processing technology, continuous stoping of the water-containing tailings is achieved, the concentration of ore pulp is guaranteed to meet a mineral processing selection requirement, and meanwhile, the thickener plays a certain buffering role so as to guarantee that useful components contained in the ore pulp are stable within a short time.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of tailings resources, in particular to a method for continuously mining water-containing tailings. Background technique [0002] Natural resources are an indispensable material basis for human survival and social development. With the rapid development of the economy, resources have gradually become the bottleneck restricting the sustainable development of human economy and society. How to realize the sustainable development of resources has become a challenge for the development of human society. major problem. [0003] Carrying out comprehensive utilization of resources and improving resource utilization efficiency are effective ways to achieve sustainable development of resources. In the past, due to the limitation of ore dressing technology, many mineral resources were not fully utilized, and they were discharged into tailings storage together with tailings. A large amount ...

AI Technical Summary

Problems solved by technology

[0005] Because most of the tailings discharge in the beneficiation process adopts wet discharge, and the particle size of metal mine tailings is generally fine, the water contained in the tailings is not easy to evaporate, resulting in high water content in many tailings ponds that have been closed for many years, especially in valleys. There are different degrees of water catchment around the dam body of the tailings pond, and the traditional recovery technology, namely mechanical mining, hydraulic mining, etc., cannot achieve recovery. Large-scale continuous mining cannot be realized due to factors such as the topography of the area, water catchment conditions, and fluctuations in pulp concentration.

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