In-situ leaching uranium mining closed loop circulating pumping and injecting system and method

Abstract

The invention belongs to the technical field of in-situ leaching uranium, and specifically relates to an in-situ leaching uranium mining closed loop circulating pumping and injecting system and method. The system comprises a liquid pumping system, an ion exchange system and a liquid injecting system; the liquid pumping system comprises a liquid pumping well, a submersible pump, a liquid pumping hole, a stock solution pump and a stock solution filter; the ion exchange system comprises an adsorption tower and resin which is placed in the adsorption tower; the liquid injecting system comprises aliquid injecting pump, an injection liquid filter, a liquid injecting hole and a liquid injecting well; the method comprises the following steps: first, performing geological exploration to determineuranium ore occurrence and an ore-bearing aquifer thickness situation; second, determining well type and well distance through condition tests and indoor rock ore sample column leaching tests, and constructing the liquid pumping well and the liquid injecting well. According to the system and the method, the frequency of the stock solution pump and the liquid injecting pump is reduced and a great effect on reducing the output of on-site energy is achieved on the premise of ensuring the maximal liquid pumping amount, namely, full capacity running of a drilling submersible pump.

Description

technical field [0001] The invention belongs to the technical field of uranium mining by in-situ leaching, and in particular relates to a closed-circuit circulation injection system and method for uranium in-situ leaching mining. Background technique [0002] In the in-situ leaching uranium mining process system, the solution delivery generally adopts an open pumping and injection system. Such as figure 1 As shown, the open pumping and injection system pumps the leachate out of the surface. After the surface pumping main pipeline gathers the leachate, it uses the terrain height difference to flow to the liquid collection tank for clarification. To the liquid distribution tank, after being pressurized by the pipeline pump, it is injected into each injection hole. In the open pumping and injection system process, there are mainly the following problems: [0003] (1) The open pumping and injection system has a long infrastructure construction period, large investment, and in...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a pumping method for a closed-circuit circulatory system in view of the shortcomings of the previous open-type pumping and injection circulatory system, such as long infrastructure construction period, large investment, large floor space, high safety and environmental protection risks, and large energy loss.

This method successfully replaces the open pumping and injection circulation system, avoids the shortcomings of the previous pumping and injection system, effectively solves the problems of large energy loss, safety and environmental protection risks, saves costs, improves the environment, and improves the stability of system operation , security purpose

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