Permeation increasing method for sandstone type uranium ore layer
A technology for sandstone and uranium deposits, applied in the field of increasing permeability of sandstone-type uranium deposits, can solve the problems that cannot be directly applied to sandstone-type uranium deposits for permeability improvement, and achieve the effect of improving mining efficiency and permeability
Pending Publication Date: 2021-05-28
SHIJIAZHUANG TIEDAO UNIV +3
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[0004] In view of this, the embodiment of the present invention provides a method for increasing the permeability of sandstone-type uranium deposits to solve the problem that the prior art cannot be directly applied in the permeability improvement of sandstone-type uranium deposits
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[0032] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0033] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0034] figure 1 It is a schematic flow diagram of the method for increasing the permeability of sandstone-type uranium deposits provided by an embodiment of the present invention. For the convenience of description, only the parts related to the embodimen...
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The invention is suitable for the technical field of uranium ore mining, and discloses a permeation increasing method for a sandstone type uranium ore layer. The permeation increasing method for the sandstone type uranium ore layer comprises the following steps of generating micro cracks in an ore-endowed rock layer of the sandstone type uranium ore layer by adopting a blasting permeation-increasing method; and dissolving useless minerals in the ore-endowed rock layer generating the micro cracks by adopting an acidification permeation increasing method. According to the method, firstly, the permeability of the ore-endowed rock layer is improved for the first time through the blasting permeation increasing method, a large number of micro cracks can be generated in the ore-endowed rock layer, large cracks are avoided, the in-situ leaching mining requirement is met, and the method can be directly applied to permeability transformation of the sandstone type uranium ore layer; meanwhile, a necessary space is provided for acidification permeation increasing, the permeability of the ore-endowed rock layer is further improved through the acidification permeation increasing method, and meanwhile, the mining efficiency of a uranium mining process can be improved, so that low-permeability sandstone type uranium ore resources are smoothly mined and utilized.
Description
technical field [0001] The invention belongs to the technical field of uranium ore mining, and in particular relates to a method for increasing the permeability of a sandstone-type uranium ore layer. Background technique [0002] Sandstone-type uranium deposits are the most important type of natural uranium resources in my country, and the preferred mining method is the in-situ leaching process, referred to as "in-situ leaching". In-situ leaching uranium mining is aimed at the uranium deposits that exist in the pressurized water-bearing sandstone layer and have good permeability. It is a method of dissolving the uranium in the ore from the natural burial conditions through drilling engineering and chemical reagents. The integrated mining and smelting uranium mining method that does not cause ore displacement has obvious environmental protection advantages. In actual production, a certain permeability of the ore-hosting rock is the basic requirement and key control factor fo...
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IPC IPC(8): E21B43/29E21B43/263E21B43/27
CPCE21B43/29E21B43/263E21B43/26
Inventor 王伟张明涛苏学斌王奇智张思怡常江芳周根茂李召坤
Owner SHIJIAZHUANG TIEDAO UNIV