Title:
HARMLESS TREATMENT METHOD FOR RECOVERING SULFUR, RHENIUM, AND ARSENIC FROM ARSENIC SULFIDE SLAG
Document Type and Number:
WIPO Patent Application WO/2022/237532
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of metallurgy, and specifically relates to a harmless treatment method for recovering sulfur, rhenium, and arsenic from arsenic sulfide slag. The method comprises four steps, namely oxygen pressure acid leaching, hot filtration, selective arsenic precipitation, and rhenium adsorption. According to the method, arsenic is preferentially precipitated, and reaction conditions are well controlled in the precipitation process, such that the loss of rhenium in the arsenic precipitation process is very small, and thus arsenic and rhenium are separated; and the resin is improved in the separated solution to improve the adsorption efficiency of rhenium, thereby obtaining high-purity rhenium products. Compared with other methods, the present invention solves the problem of arsenic and the valuable metals copper and rhenium being unable to be completely separated, and efficiently stabilizes arsenic. By means of the method in the present invention, sulfur and rhenium can be recovered from the arsenic sulfide slag, and arsenic can be harmlessly treated, and the method has the advantages of being environmentally friendly, economically viable, energy saving and high efficiency, having a high resource recovery rate, etc.
Inventors:
LIU ZHIYONG (CN)
LIU ZHIHONG (CN)
HONG MINGHAO (CN)
LI QIHAO (CN)
ZHANG JIARUN (CN)
HE WENRUI (CN)
LIU ZHIHONG (CN)
HONG MINGHAO (CN)
LI QIHAO (CN)
ZHANG JIARUN (CN)
HE WENRUI (CN)
Application Number:
PCT/CN2022/089408
Publication Date:
November 17, 2022
Filing Date:
April 26, 2022
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
International Classes:
C22B7/04; C01B17/06; C01G49/00; C22B1/11; C22B15/00; C22B30/04; C22B61/00; C25C1/12
Foreign References:
| CN113430385A | 2021-09-24 | |||
| CN113564372A | 2021-10-29 | |||
| CN107012340A | 2017-08-04 | |||
| CN105039713A | 2015-11-11 | |||
| CN110468277A | 2019-11-19 | |||
| CN103911508A | 2014-07-09 | |||
| CN106830091A | 2017-06-13 | |||
| US20140356260A1 | 2014-12-04 | |||
| JP2013253299A | 2013-12-19 |
Attorney, Agent or Firm:
CHANGSHA QIHAO INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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