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Method of extracting radioactive uranium in phosphate

A technology for radioactive uranium and phosphate, applied in the field of extracting radioactive uranium, can solve problems such as inability to meet demand and shortage of resources, and achieve the effects of shortening project time, improving radioactive pollution, and reducing costs and risks

Inactive Publication Date: 2008-07-09
BEIJING SIPADUN MINERAL RESOURCE INVESTMENT CONSULTING
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Problems solved by technology

And the whole world is facing the common problem of resource shortage, this kind of conventional mining is far from meeting the demand

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  • Method of extracting radioactive uranium in phosphate
  • Method of extracting radioactive uranium in phosphate
  • Method of extracting radioactive uranium in phosphate

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Embodiment Construction

[0042] The method of the present invention will be further described in detail in conjunction with the accompanying drawings and the embodiment of extracting radioactive uranium from phosphate ore.

[0043] Usually the main use of phosphate rock is to produce phosphate-containing fertilizers. refer to figure 2 The process of mining and ore processing is firstly carried out to obtain phosphate rock, and then acidified with sulfuric acid to prepare phosphoric acid (usually called wet process phosphoric acid). After solid-liquid separation and cleaning, the uranium-containing acid is separated, and the remaining solid residue is further processed. Phosphate rocks may contain large amounts of uranium, generally in the range of 0.1 to 0.5 pounds per ton, and more commonly in the range of 0.2 to 0.4 pounds per ton. After uranium is dissolved (that is, in wet-process phosphoric acid), the content of uranium in uranium-containing acid is about 0.15g to 0.25g per liter. This acidif...

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Abstract

A method to extract uranium with radioactivity from phosphate, content of which is as follows: (1) Acidification. (2) Condensate is separated and washed. (3) Suspended substance is eliminated. (4) Fine filtration. (5) U4+ is oxidized to U6+. (6) Uranium is extracted and separated in organic solvent. (7) U6+ is deoxidized to U4+ and U4+ acid solution is separated. (8) Acid solution is contacted with oxidant and translated to U6+ acid solution. (9) Second-level extraction is carried in organic solution to get second-level raffinate of U6+. (10) Ammonia-uranium base and three carbon alloy can be separated and produced by meeting with amido-carbonate solution. (11) 2-ethylhexyl phosphoric acid is formed by mixing with organic solvent which is non-water soluble. (12) Acidification. (13) DEPA wax is separated. (14) Uranium-base peroxide is created by hydrogen peroxide of water-soluble acid composing to deposit and separate. Extraction of uranium from fertilizer can lower the production cost of uranium and reduce the environmental pollution, which offers an effective method for energy conservation.

Description

technical field [0001] The invention relates to a method for extracting radioactive uranium from phosphate. Background technique [0002] At present, the conventional methods for developing and utilizing uranium resources in China can be mainly divided into two categories, one is the conventional mining development process from mining to beneficiation and extraction, and the other is the in-situ leaching method. [0003] figure 1 Existing conventional process flow diagram for uranium mining and processing. refer to figure 1 The mining of conventional uranium deposits is to mine uranium ore from uranium deposits with industrial value through open-pit mining and underground mining, and then through radioactive beneficiation, crushing, and grinding; or chemically leaching uranium metal, To produce liquid uranium compounds, the mined ore and uranium solution must be extracted and refined in the uranium water smelter. According to different requirements, the prepared uranium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B60/02C22B3/08C22B3/22C22B3/26
Inventor 李巴克葛启明
Owner BEIJING SIPADUN MINERAL RESOURCE INVESTMENT CONSULTING
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