METHOD FOR RECOVERING COPPER FROM PHOSPHORIC ACID EXTRACTANT-CONTAINING SOLUTION

WIPO Patent Application WO/2020/211757

A1

A method for recovering copper from a phosphoric acid extractant-containing solution. The method comprises: mixing a phosphoric acid extractant-containing solution with solvent oil to obtain an oil-water mixture; performing oil-water separation on the oil-water mixture to obtain a water phase and an oil phase; and performing oxime extraction on the water phase to obtain metallic copper. A phosphoric acid extractant-containing solution is mixed with solvent oil, and oil-water separation is then performed, so as to reduce the content of a phosphoric acid extractant in a water-phase solution; an oxime extraction process is then performed, so that the oxime extraction process can be normally operated, an organic phase can be recycled, and the quality of product copper can also be improved. According to the method, existing operations such as air flotation, ultrasound, resin or fiber agglomeration, and activated carbon adsorption are replaced with simple mixing and oil-water separation means, thereby simplifying the operation, device and process, and significantly saving recovery and investment operation costs.

WANG HENGLI (CN)
ZHENG MINGZHEN (CN)
DAI JIANGHONG (CN)
CUI HONGZHI (CN)
ZHANG YANG (CN)
WANG RUIMEI (CN)

PCT/CN2020/084745

October 22, 2020

April 14, 2020

Click for automatic bibliography generation  

CHINA ENFI ENG CORP (CN)

C22B7/00; C22B3/30; C22B15/00

CN1169119A	1997-12-31
CN101209853A	2008-07-02
CN109897958A	2019-06-18
CN103459622A	2013-12-18
CN109609754A	2019-04-12
CN101519726A	2009-09-02
CN109487083A	2019-03-19
US4874534A	1989-10-17

KANGXIN PARTNERS, P.C. (CN)

View/Download PDF      PDF Help

Previous Patent: SEMANTIC RECOGNITION METHOD, DEVICE, COMPUTER READABLE STORAGE MEDIUM AND COMPUTER APPARATUS

Next Patent: POSITIONING APPARATUS AND SCRIBING DEVICE