Leaching experimental facility for in-situ leaching uranium mining
An experimental device, the technology of uranium mining by in-situ leaching, is applied in the direction of mining fluid, earthwork drilling, measurement, etc. It can solve the problems of hole structure damage, column leaching is difficult to provide leaching rate, uranium concentration, and formation overburden pressure cannot be simulated. Quickly dissolves the balance, improves the guiding significance, and maintains a stable effect
Active Publication Date: 2014-04-09
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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Problems solved by technology
[0006] In addition to the above problems, in-situ leaching uranium column leaching devices all use broken cores, and the core column has no overburden pressure, which cannot simulate the overburden pressure of the formation, and the damage of the pore structure makes the fluid flow in the core far from the actual situation. , making it difficult for column leaching to provide accurate information on leaching rate and uranium concentration
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[0029] The technical solution of the present invention will be further described in detail through the embodiments below in conjunction with the accompanying drawings.
[0030] The present invention is an experimental leaching device for in-situ leaching mining uranium, which mainly includes a gas source, a high-pressure pressure reducing valve 3, a stop valve 4, a gas mass flow meter 5, a liquid inlet pipeline 6, a stirring container 7, a nitrogen cylinder 8, and a back pressure of the stirring container Valve 9, pneumatic valve 10, liquid injection intermediate container 11, intermediate container back pressure valve 12, plunger pump 13, pressure sensor, full diameter core holder 15, ring pressure pump 16, leaching back pressure valve 18, balance metering system 19 and computers 20, etc., of which:
[0031] Gas source intake part: The gas source includes oxygen gas source 1 and carbon dioxide gas source 2. The two gas sources respectively form the gas source intake part with...
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Abstract
The invention belongs to the technical field of experimental devices for scientific researches on in-situ leaching uranium mining, and particularly relates to a leaching experimental facility for in-situ leaching uranium mining. A gas source comprises an oxygen source and a carbon dioxide source; gas and liquid are mixed and dissolved by using a magnetic stirring device in a stirring container; dissolving pressure is controlled by a nitrogen cylinder via a stirring container pressure return valve; the pressure provided by a plunger pump is adjusted through an intermediate container pressure return valve in an experiment until the pressure in a liquid injection intermediate container is the same with the pressure in the stirring container; leaching liquid is pressed in the liquid injection intermediate container by a pressure adjusting portion; a rock core is arranged in a full-diameter rock core holding unit; a ring pressure pump and a pressure sensor are arranged at two ends of the holding unit; an outlet end is provided with a leaching pressure return valve; formation pressure is simulated; oxygen in leaching agent is controlled so that the oxygen cannot be separated out; the mass of the liquid is measured by a balance measuring system; and the experiment is automatically controlled by a computer.
Description
technical field [0001] The invention belongs to the technical field of in-situ leaching uranium mining scientific research experimental devices, and is mainly used for leaching experimental research when oxygen and carbon dioxide are used as leaching agents under simulated formation conditions, and specifically relates to an in-situ leaching uranium leaching experimental device. Background technique [0002] At present, the indoor leaching experiment of uranium mining by in-situ leaching usually adopts two research methods: agitation leaching and column leaching. Stirring leaching is mainly used to study the possible total leaching rate, and initially explore the formulation of the leaching agent. If an autoclave is used, leaching research can also be carried out when oxygen and carbon dioxide are used as leaching agents. Column leaching is mainly used to simulate the flow experiment of in-situ leaching for uranium mining, to study the leaching process, and to further screen...
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IPC IPC(8): E21B43/16E21B47/00
Inventor 廖文胜苏学斌刘乃忠张建华王立民陈睿江国平姜岩
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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