METHOD FOR PRODUCING MANGANESE DRY CELL NEGATIVE ELECTRODE ZINC MATERIAL

Title:

METHOD FOR PRODUCING MANGANESE DRY CELL NEGATIVE ELECTRODE ZINC MATERIAL

Document Type and Number:

WIPO Patent Application WO/2006/040857

Kind Code:

A1

Abstract:

A method for producing a lead-free zinc pellet for manganese dry cell by continuous casting rolling system with high quality and high productivity. A zinc alloy is prepared in a melting furnace (11) by adding bismuth or additive elements principally comprising bismuth to pure zinc, continuously cast by a casting machine (14) to have a band shape of about 9-20 mm in thickness, and then rolled by pair rolls (19-1, 19-2) to have a predetermined thickness. After being rolled to have a predetermined thickness, it is temporarily wound up spirally or cut into a predetermined length. Thereafter, the wound-up zinc alloy is unwound and the zinc alloy cut into a predetermined length is kept as it is, to be fed to a punching press (21) and punched into a predetermined shape, thus producing a negative electrode zinc plate for 6F22 or a zinc pellet for the negative electrode of tubular manganese dry cell.

Inventors:

MAEDA MUTSUHIRO (JP)
KOBAYASHI KAZUNARI (JP)
LAU YUK FAI (CN)

Application Number:

PCT/JP2005/010378

Publication Date:

April 20, 2006

Filing Date:

June 06, 2005

Export Citation:

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Assignee:

TOSHIBA BATTERY (JP)
ADVANCED ZONE LTD (CN)
MAEDA MUTSUHIRO (JP)
KOBAYASHI KAZUNARI (JP)
LAU YUK FAI (CN)

International Classes:

H01M4/12; B22D11/00; B22D11/06; B22D11/12; C22C18/00; C22F1/16; H01M4/42; C22F1/00; (IPC1-7): H01M4/12; B22D11/00; B22D11/06; B22D11/12; C22C18/00; C22F1/00; C22F1/16; H01M4/42

Domestic Patent References:

WO2000077868A1

2000-12-21

Foreign References:

JPH07296813A	1995-11-10
JPH05318037A	1993-12-03
JP2000058045A	2000-02-25
JP2003502499A	2003-01-21
JPH07296813A	1995-11-10
JP2003502499A	2003-01-21

Other References: