Title:
【発明の名称】リチウム1次電池用二酸化マンガンおよびその製造方法
Document Type and Number:
Japanese Patent JP3342769
Kind Code:
B2
Abstract:
In a method of producing manganese dioxide for a lithium primary battery, heat treatment for dehydrating water-containing manganese dioxide is carried out by continuously calcining the water-containing manganese dioxide at 440 DEG C to 480 DEG C, preferably by controlling the flow rate of air introduced into the furnace to the value of from 20 to 2000Nl per 1kg water-containing manganese dioxide which is supplied into the furnace. According to this method, the residual bound water in the calcined manganese dioxide is reduced as compared those treated with a conventional method, and thus preservation property of a battery can be improved.
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Inventors:
Hiroshi Sumida
Yoshio Nakatani
Takuya Deguchi
Yoshio Nakatani
Takuya Deguchi
Application Number:
JP6350394A
Publication Date:
November 11, 2002
Filing Date:
March 31, 1994
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
H01M4/06; C01G45/02; H01M4/08; H01M4/50; (IPC1-7): H01M4/50
Domestic Patent References:
| JP255229A | ||||
| JP257693A |
Attorney, Agent or Firm:
Johei Yamashita