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Title:
METHOD FOR REMOVING RADIOACTIVE THORIUM ELEMENT IN RARE EARTH MINERAL
Document Type and Number:
WIPO Patent Application WO/2018/227674
Kind Code:
A1
Abstract:
A method for removing a radioactive thorium element in a rare earth mineral, comprising the following steps: mixing the rare earth mineral and selenium dioxide in water; enabling the radioactive thorium element and the selenium dioxide to undergo a reaction by means of a hydrothermal method; cooling to form crystals; and separating the crystals so as to remove the radioactive thorium element. The method is low in energy consumption and high in separation ratio, can implement one-step curing and separation, and effectively overcomes the defects in a conventional method that separating operations are redundant and the amount of organic and radioactive waste liquid is large.

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Inventors:
WANG SHUAO (CN)
LU HUANGJIE (CN)
WANG YAXING (CN)
Application Number:
PCT/CN2017/091765
Publication Date:
December 20, 2018
Filing Date:
July 05, 2017
Export Citation:
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Assignee:
UNIV SOOCHOW (CN)
International Classes:
C01B19/00; C22B60/02; C01F1/00; C22B3/00; C22B59/00
Foreign References:
CN104498739A2015-04-08
CN101886175A2010-11-17
CN101294244A2008-10-29
JP2015057507A2015-03-26
US20160348214A12016-12-01
US3511597A1970-05-12
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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