電池グレードのＮｉ－Ｃｏ－Ｍｎ混合液及び電池グレードのＭｎ溶液の調製方法

Title:

電池グレードのＮｉ－Ｃｏ－Ｍｎ混合液及び電池グレードのＭｎ溶液の調製方法

Document Type and Number:

Japanese Patent JP7283720

Kind Code:

B2

Abstract:

Provided are a battery-level Ni-Co-Mn mixed solution and a preparation method for a battery-level Mn solution, the steps thereof comprising: acid dissolution (S1), alkalization to remove impurities (S2), synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), synergistic extraction (S5), and refining extraction (S6). The steps of deep ageing to remove impurities (S4) and synergistic extraction (S5) comprise: performing deep ageing on a filtrate obtained from the step of synchronous precipitation of calcium, magnesium, and lithium (S3), and after performing filtration to remove impurities, obtaining an aged filtrate; using P204 to extract the aged filtrate and obtain a loaded organic phase, and subjecting the loaded organic phase to staged back-extraction to obtain the battery-level Ni-Co-Mn mixed solution and a Mn-containing solution. By means of the cooperation between the multiple process steps of synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), and synergistic extraction (S5), the impurity content of the obtained battery-level Ni-Co-Mn mixed solution is significantly lowered, and the battery-level Ni-Co-Mn mixed solution can be directly used to prepare a lithium battery ternary precursor material. At the same time, the battery-level Mn solution can also be obtained, which is favorable for large-scale applications of the process and increasing economic benefits.

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Inventors:

Huh Kaihua
Jiang Zhenkang
Lee Kinhyang
Zhang Kun
Wang Wen Jie
Wang Jun
Onse Kurenai

Application Number:

JP2022540943A

Publication Date:

May 30, 2023

Filing Date:

December 31, 2019

Export Citation:

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Assignee:

▲荊▼▲門▼市格林美新材料有限公司

International Classes:

C22B7/00; C22B3/08; C22B3/10; C22B3/22; C22B3/26; C22B3/44; C22B23/00; C22B47/00; H01M10/54

Domestic Patent References:

JP2015183292A
JP2019530795A

Foreign References:

CN105206889A
CN109449523A
CN109735709A
CN110512080A

Attorney, Agent or Firm:

Patent Attorney Fukami Patent Office

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