Title:
LEACHING AGENT AND LEACHING METHOD FOR LEACHING RARE EARTH IN ION-ADSORBED RARE EARTH ORE
Document Type and Number:
WIPO Patent Application WO/2016/041436
Kind Code:
A1
Abstract:
A leaching agent and leaching method for leaching a rare earth element in an ion-adsorbed rare earth ore; the leaching agent is an aqueous solution comprising reducing ions. The present invention uses the aqueous solution comprising the reducing ions as a leaching agent to leach an ion-adsorbed rare earth ore, and leaches an ionic phase rare earth element from a rare earth ore via an ion exchange method. In addition, the present invention utilizes the reducing action of the reducing ions so as to enable high-valence rare earth ions in a colloidal phase and a mineral phase to undergo a reduction reaction, such that low-valence ions leach out, thus improving a leaching rate of a rare earth element in the ion-adsorbed rare earth ore.
Inventors:
HUANG XIAOWEI (CN)
FENG ZONGYU (CN)
WANG LIANGSHI (CN)
WANG MENG (CN)
CUI DALI (CN)
XIAO YANFEI (CN)
DONG JINSHI (CN)
ZHAO NA (CN)
HUANG LI (CN)
FENG ZONGYU (CN)
WANG LIANGSHI (CN)
WANG MENG (CN)
CUI DALI (CN)
XIAO YANFEI (CN)
DONG JINSHI (CN)
ZHAO NA (CN)
HUANG LI (CN)
Application Number:
PCT/CN2015/088300
Publication Date:
March 24, 2016
Filing Date:
August 27, 2015
Export Citation:
Assignee:
GRIREM ADVANCED MAT CO LTD (CN)
International Classes:
C22B59/00; C22B3/06
Foreign References:
| CN101476033A | 2009-07-08 | |||
| CN103173617A | 2013-06-26 | |||
| CN1769504A | 2006-05-10 | |||
| KR20140083196A | 2014-07-04 | |||
| CA2631190A1 | 2009-11-02 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
北京康信知识产权代理有限责任公司 (CN)
北京康信知识产权代理有限责任公司 (CN)
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