Title:
WASHING TECHNOLOGICAL PROCESS FOR INCREASING NICKEL-COBALT SEPARATION RATE OF NICKEL ADSORPTION RESIN
Document Type and Number:
WIPO Patent Application WO/2024/036914
Kind Code:
A1
Abstract:
A washing technological process for increasing the nickel-cobalt separation rate of a nickel adsorption resin. The washing technological process comprises the following steps: (1) introducing a nickel-cobalt sulfate solution containing impurities into a resin column for adsorption treatment until the resin column reaches adsorption saturation, and then obtaining a saturated resin column and an adsorption tail liquid; (2) after a nickel sulfate solution is used and the pH value is adjusted, washing the saturated resin column in step (1) to obtain a liquid after washing, the liquid after washing being combined with the nickel-cobalt sulfate solution containing impurities in step (1); and (3) resolving the washed resin column by using sulfuric acid to obtain a finished nickel sulfate solution, and returning the finished nickel sulfate solution in step (3) to step (2) to replace the nickel sulfate solution to wash the saturated resin column in step (1). The technological process increases the nickel-cobalt separation rate of the nickel adsorption resin, reduces cobalt adsorption entrainment, and does not introduce new impurity elements into the system.
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Inventors:
MA YONGGANG (CN)
HUANG SHANFU (CN)
HUANG SHANFU (CN)
Application Number:
PCT/CN2023/078841
Publication Date:
February 22, 2024
Filing Date:
February 28, 2023
Export Citation:
Assignee:
SHANGHAI JAYSON NEW ENERGY MAT CO LTD (CN)
International Classes:
C22B23/00; C22B3/24
Foreign References:
| CN115341105A | 2022-11-15 | |||
| CN113249571A | 2021-08-13 | |||
| CN110468280A | 2019-11-19 | |||
| EP2532759A1 | 2012-12-12 | |||
| US6149885A | 2000-11-21 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW et al. (CN)
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