METHOD FOR RECOVERING LITHIUM AND COBALT FROM LITHIUM COBALTATE

Title:

METHOD FOR RECOVERING LITHIUM AND COBALT FROM LITHIUM COBALTATE

Document Type and Number:

Japanese Patent JP2004011010

Kind Code:

A

Abstract:

To provide a method for safely separating and recovering lithium and cobalt, of which the operation can be inexpensively conducted without using expensive chemicals.

Lithium cobaltate is subjected to reduction roasting in an hydrogen current at the temperature ≥ 400°C or subjected to reduction roasting with carbon added thereto in an inert gas atmosphere at the temperature ≥ 700°C, so that the compound form of lithium cobaltate is changed. The roasted product is leached with water, so that lithium is recovered by elution and cobalt is recovered by distribution to a residue respectively.

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Inventors:

MAEBA KAZUYA
OKADA SHUJI
TAN TOSHIRO
KANESAKA ATSUSHI

Application Number:

JP2002169576A

Publication Date:

January 15, 2004

Filing Date:

June 11, 2002

Export Citation:

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Assignee:

SUMITOMO METAL MINING CO

International Classes:

C22B26/12; C22B3/04; C22B7/00; C22B23/00; H01M10/54; (IPC1-7): C22B26/12; C22B3/04; C22B7/00; C22B23/00; H01M10/54

Attorney, Agent or Firm:

Asao Kamoda
Kameda Tetsuaki

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