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Title:
DEVICE AND CONTROL METHOD FOR REMOVING NICKEL, COBALT AND GERMANIUM IN ZINC SULFATE SOLUTION BY MEANS OF CONTINUOUS DEEP PURIFICATION
Document Type and Number:
WIPO Patent Application WO/2021/147803
Kind Code:
A1
Abstract:
A method for removing nickel, cobalt and germanium in a zinc sulfate solution by means of continuous deep purification. A continuous purification device for removing nickel, cobalt and germanium by means of two-stage purification is composed of a plurality of continuous stirring reactors connected in series and generally used for zinc hydrometallurgy; a one-stage copper and cadmium-removed liquid is heated to a designated range of temperature, appropriate amounts of zinc powder and an activating agent are added according to the unit volume of the one-stage copper and cadmium-removed liquid multiplied by a liquid flow rate, and an appropriate amount of sulfuric acid or electrolyte waste is continuously added to a purification system; then the zinc powder and the activating agent continuously flow through the purification system in a certain period of time at a certain range of temperature and under a condition of continuous stirring, and react with the one-stage copper and cadmium-removed liquid to remove nickel, cobalt and germanium; the material slurry containing a purification slag and the two-stage purified liquid flowing out of the final reactor is continuously subjected to liquid-solid separation to obtain the purification slag and the purified liquid.

Inventors:
ZHANG XU (CN)
GENG HUI (CN)
DUAN ZHIYONG (CN)
SHEN QINGFENG (CN)
CUI PENG (CN)
Application Number:
PCT/CN2021/072420
Publication Date:
July 29, 2021
Filing Date:
January 18, 2021
Export Citation:
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Assignee:
KUNMING HANCHUANG SCIENCE AND TECH CO LTD (CN)
International Classes:
C01G19/06; C22B19/20; C22B19/32; C25C1/16
Foreign References:
CN110066918A2019-07-30
CN111172408A2020-05-19
JPS522808A1977-01-10
JPS63312991A1988-12-21
US4252622A1981-02-24
US2503479A1950-04-11
Attorney, Agent or Firm:
KUNMING JINWEI PATENT & TRADEMARK AGENT CO., LTD. (CN)
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