Tailing in-situ leaching process and system

Abstract

The invention relates to a tailing in-situ leaching process and system. The tailing in-situ leaching process comprises the steps that injection holes and pumping-out holes are drilled in an operationsite of to-be-treated tailings; vertical obstruction systems are arranged on the periphery of the operation site of the to-be-treated tailings; monitoring systems are arranged on the peripheries of the vertical obstruction systems; cleaving slurry-injection pipes are inserted in the needed injection holes, and slurry pumping-out pipes are inserted in the needed pumping-out holes; leaching agents are injected into the injection holes through a cleaving slurry-injection mode; the leaching agents are diffused and react with useful components in a tailing heap body; and leachate formed in the reaction is pumped out by the slurry pumping-out pipes and conveyed to a ground leachate treatment system to be subjected to subsequent treatment. The useful components can be recycled effectively under the low-cost condition, secondary pollution can be avoided through combining of the tailing in-situ leaching system with the vertical obstruction systems and the monitoring systems, the tailing in-situleaching process and system are widely applied to in-situ leaching of the heavy metal tailings, and the various problems caused by tailing heaping and loss and waste of resources are avoided.

Description

technical field [0001] The invention relates to a tailings treatment and comprehensive utilization technology, in particular to a tailings in-situ leaching process and a tailings in-situ leaching system. Background technique [0002] Traditional mineral resource development requires mining of high-grade, easy-to-separate ore, resulting in low resource utilization, high energy consumption, and a large amount of waste ore and tailings. Due to their low grade, they can only be stacked in tailings ponds for a long time. According to statistics, so far, the tailings stockpiled in various mines in my country has reached 8 billion tons, and the annual discharge rate is increasing at a rate of more than 300 million tons. Among them, iron ore tailings are 2.6 billion tons, non-ferrous metal mine tailings 2.1 billion tons, and gold mine tailings also reached 300 million tons. As the demand for mineral products continues to increase with the development of industrialization, the accumu...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a tailings in-situ leaching process and a tailings in-situ leaching system, which can effectively recover useful components at a relatively low cost, and its combined barrier and monitoring system can avoid the leaching process It can be widely used in the in-situ leaching of heavy metal tailings to avoid many problems caused by tailings stockpiling and the loss and waste of resources.

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