Title:
METHOD FOR REMOVING CARBONATE RADICALS FROM LITHIUM PRECIPITATION MOTHER LIQUOR
Document Type and Number:
WIPO Patent Application WO/2024/066175
Kind Code:
A1
Abstract:
The present application provides a method for removing carbonate radicals from a lithium precipitation mother liquor. The method comprises: mixing a lithium precipitation mother liquor with nickel-cobalt-manganese wastewater for reaction, and removing carbonate radicals from the lithium precipitation mother liquor to prepare nickel-cobalt-manganese carbonate slag. According to the present application, in the process of removing the carbonate radicals from the lithium precipitation mother liquor, the pH value does not need to be adjusted, the use of an acid liquor or an alkali liquor is avoided, and the content of the carbonate radicals in the lithium precipitation mother liquor can be greatly reduced, so that the carbonate radicals in the lithium precipitation mother liquor are efficiently and simply removed at low cost. Moreover, the nickel-cobalt-manganese carbonate slag is prepared while the carbonate radicals are removed, and the nickel-cobalt-manganese carbonate slag can be used for preparing a ternary positive electrode material, so that the effect of recycling nickel, cobalt and manganese from the nickel-cobalt-manganese wastewater is achieved.
Inventors:
MIAO YAOWEN (CN)
LI CHANGDONG (CN)
QIAO YANCHAO (CN)
LI BO (CN)
CHEN RUOKUI (CN)
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
QIAO YANCHAO (CN)
LI BO (CN)
CHEN RUOKUI (CN)
RUAN DINGSHAN (CN)
Application Number:
PCT/CN2023/077161
Publication Date:
April 04, 2024
Filing Date:
February 20, 2023
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
C01G53/00; C01D15/08
Foreign References:
| CN115571926A | 2023-01-06 | |||
| CN112725621A | 2021-04-30 | |||
| CN105347364A | 2016-02-24 | |||
| CN111118311A | 2020-05-08 | |||
| CN112158865A | 2021-01-01 | |||
| CN113912090A | 2022-01-11 | |||
| CN113998742A | 2022-02-01 | |||
| US20150024207A1 | 2015-01-22 |
Other References:
GU ZHONG-SU; LONG JIAN-PING; TAN LI-LING: "Lithium Deposition Mother Liquor Purification Process", JOURNAL OF SALT SCIENCE AND CHEMICAL INDUSTRY, vol. 46, no. 8, 31 August 2017 (2017-08-31), pages 30 - 34, XP009553695, ISSN: 2096-3408, DOI: 10.16570/j.cnki.issn1673-6850.2017.08.012
Attorney, Agent or Firm:
BEIJING YZH IP FIRM (CN)
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