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In-situ leaching mining method for low-permeability multi-layer sandstone uranium ore

A mining method and sandstone technology, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., can solve the problems of low mining efficiency and achieve the effect of improving mining efficiency and permeability

Active Publication Date: 2021-03-05
SHIJIAZHUANG TIEDAO UNIV +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide an in-situ leaching mining method of low-permeability multi-layer sandstone uranium ore, aiming to solve the technical problem of low mining efficiency existing in the mining of low-permeability multi-layer superimposed sandstone uranium ore

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  • In-situ leaching mining method for low-permeability multi-layer sandstone uranium ore
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  • In-situ leaching mining method for low-permeability multi-layer sandstone uranium ore

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[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] See Figure 1 to Figure 3 , the in-situ leaching mining method of a low-permeability multi-layer sandstone uranium ore provided by the present invention is now described. figure 1 It shows the implementation process of an in-situ leaching mining method for a low-permeability multi-layer sandstone uranium ore provided by an embodiment of the present invention, and the process is described in detail as follows:

[0030] In step S100, the construction preparation operation is carried out. The construction preparation mainly includes geological exploration (det...

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Abstract

The invention provides an in-situ leaching mining method for low-permeability multi-layer sandstone uranium ore, and belongs to the technical field of uranium ore mining. The in-situ leaching mining method for the low-permeability multi-layer sandstone uranium ore comprises the steps of construction preparation, liquid injection well forming, horizontal drilling and blasting permeability increasing, drainage well forming and leaching operation. According to the in-situ leaching mining method for the low-permeability multi-layer sandstone uranium ore, the steps of horizontal drilling and blasting permeability increasing are set in the in-situ leaching mining process, so that cracks are formed in all uranium-bearing sandstone ore layers, the permeability of the uranium-bearing sandstone orelayers is improved, leaching liquid injected into all the uranium-bearing sandstone ore layers can fully react with uranium-bearing sandstone, and the mining efficiency of the uranium ore is further improved.

Description

technical field [0001] The invention belongs to the technical field of uranium ore mining, and more specifically relates to an in-situ leaching mining method of low-permeability multi-layer sandstone uranium ore. Background technique [0002] Sandstone-type uranium ore is the largest type of uranium ore in my country. Its main mining method is in-situ leaching mining technology, that is, using a liquid injection well to inject a specific leaching solution into the target uranium ore reservoir. The reaction is to leach metal uranium, and the leaching solution is raised to the surface through the pumping well, and the process of uranium extraction is realized in the surface factory. In-situ leaching uranium mining technology has the characteristics of low cost, good benefit, high resource utilization rate, and environmental protection, and has been widely used around the world. [0003] The proven sandstone-type uranium deposits in my country have the characteristics of low pe...

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Application Information

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IPC IPC(8): E21B43/28E21B43/263
CPCE21B43/28E21B43/283E21B43/263
Inventor 牛庆合王伟苏学斌周根茂李召坤袁维闻磊常江芳
Owner SHIJIAZHUANG TIEDAO UNIV