Long-distance seepage simulation experiment device and method
A technology of seepage simulation and experimental device, which can be applied in the fields of mining fluids, teaching models, and earthwork drilling, etc., and can solve problems such as increasing the cost of uranium mining in a single hole.
Active Publication Date: 2020-09-29
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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At the same time, the deepening of the drilling depth increases the cost of single-hole uranium mining, and there is an urgent need to expand the well spacing to reduce costs and increase efficiency
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] Aiming at the current deep deposit and ultra-deep drilling for uranium mining by in-situ leaching, a long-distance seepage simulation experimental device method and experimental method are provided, which are used for long-distance seepage leaching tests under pressurized conditions. Test methods and devices are provided for the evaluation of leaching performance of ores under certain conditions.
[0027] In order to make the above objects, features and...
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The invention discloses a long-distance seepage simulation experiment device which comprises a leaching agent preparation tank, a continuous long-distance model column and a data acquisition and processing system, a solution inlet, a carbon dioxide inlet and an oxygen inlet are formed in the leaching agent preparation tank, and valves are arranged at the three inlets; the liquid outlet end of theleaching agent preparation tank is communicated with the inlet end of the continuous long-distance model column, a back pressure valve is arranged at the outlet end of the continuous long-distance model column, and the back pressure valve and the leaching agent preparation tank are in electric signal connection with the data acquisition and processing system. The stratum pressure range of a targetore bed can be simulated to be 0-20 Mpa; the simulated well distance range is 0-50 m; meanwhile, a process solution can be subjected to pressure-maintaining sampling, and an ore sample can be sampledin sections after an experiment is finished.
Description
technical field [0001] The invention relates to the technical field of uranium ore in-situ leaching, in particular to a long-distance seepage simulation experiment device and an experiment method. Background technique [0002] At present, the simulation research of in-situ leaching uranium mining process mainly adopts two methods: normal and low pressure simulation and pressurized simulation, and the length of the model column in the pressurized simulation test is mostly concentrated within 1m. [0003] With the deepening of in-situ leaching drilling and burial of ore-bearing strata, the influence of formation pressure on leaching performance evaluation can no longer be ignored. At the same time, the deepening of the drilling depth increases the cost of single-hole uranium mining, and there is an urgent need to expand the well spacing to reduce costs and increase efficiency. [0004] Therefore, it is particularly important to provide a corresponding test method and test dev...
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IPC IPC(8): G09B25/00E21B43/28
CPCG09B25/00E21B43/28
Inventor 程威李建华胡柏石郑剑平李坡李召坤
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY