Title:
硫黄回収を伴う選択的な希土類抽出を行う系および方法
Document Type and Number:
Japanese Patent JP6707466
Kind Code:
B2
Abstract:
The application relates to a process for rare earth extraction and thorium removal from monazite or bastnasite bearing ores or ore beneficiation and industrial waste containing a variable amount of rare earth elements as oxides, phosphates, carbonates or sulfates, comprising (i) controlled mixture between sulfuric acid and the material containing rare earth and (ii) water leaching under controlled conditions.
Inventors:
Leandro, Augusto, Biana, Teishela
Rubaran, Gomez, Silva
Rubaran, Gomez, Silva
Application Number:
JP2016567784A
Publication Date:
June 10, 2020
Filing Date:
May 13, 2015
Export Citation:
Assignee:
VALE S.A.
International Classes:
C22B59/00; C22B1/02; C22B1/06; C22B3/08
Domestic Patent References:
| JP27002266B1 | ||||
| JP2015519474A |
Foreign References:
| WO2013163711A1 |
Attorney, Agent or Firm:
Yukitaka Nakamura
Satoru Asakura
Mari Asano
Hiroshi Sorimachi
Yuta Kanazawa
Satoru Asakura
Mari Asano
Hiroshi Sorimachi
Yuta Kanazawa