Title:
METHOD FOR EFFICIENTLY SEPARATING COBALT/NICKEL MAGNESIUM MANGANESE FROM CRUDE COBALT/NICKEL SALT RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/181745
Kind Code:
A1
Abstract:
Provided is a method for efficiently separating cobalt/nickel magnesium manganese from crude cobalt/nickel salt raw material. Using crude cobalt/nickel salt as a raw material, a catalyst is added after slurrying; a high-temperature and high-pressure hydrogen reduction process is used, that is, key points such as pH, catalyst, hydrogen partial pressure, temperature, reaction time, and the like are controlled; after the reaction is completed, initial separation of cobalt/nickel magnesium manganese is achieved by means of re-sorting; the obtained light manganese slag is subjected to magnetic separation to recover entrained fine-grained cobalt/nickel powder and use same as a catalyst; the obtained crude cobalt/nickel powder is acid leached to prepare a cobalt/nickel leachate; P204 is used to extract and remove impurities, then magnesium is removed via resin to yield a magnesium-free cobalt/nickel solution, or, upon further extraction and removal of impurities and resin deep removal of magnesium, a high-purity cobalt/nickel product solution is obtained. The magnesium removal rate of the method of the present invention can reach 99% or higher, the manganese removal rate can reach 99% or higher, and the invention has the features of a simple process, low cost, short process flow, and high magnesium and manganese removal rates.
Inventors:
HU LEI (CN)
CHEN YUQIAN (CN)
CHEN CONG (CN)
CHEN YUQIAN (CN)
CHEN CONG (CN)
Application Number:
PCT/CN2019/104293
Publication Date:
September 17, 2020
Filing Date:
September 04, 2019
Export Citation:
Assignee:
HUAYOU NEW ENERGY TECH QUZHOU CO LTD (CN)
ZHEJIANG HUAYOU COBALT CO LTD (CN)
CONGO DONGFANG INT MINING SAS (CD)
ZHEJIANG HUAYOU COBALT CO LTD (CN)
CONGO DONGFANG INT MINING SAS (CD)
International Classes:
C22B23/00; B03C1/00; C22B3/24; C22B3/38
Foreign References:
| CN109943733A | 2019-06-28 | |||
| CN108977652A | 2018-12-11 | |||
| CN102952954A | 2013-03-06 | |||
| US3816098A | 1974-06-11 |
Attorney, Agent or Firm:
ZHEJIANG SHINE PATENT OFFICE(GENERAL PARTNER) (CN)
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