METHOD FOR REDUCTION TREATMENT OF METAL OXIDE OR IRONMAKING WASTE, AND METHOD FOR CONCENTRATION AND/OR RECOVERY OF ZINC AND/OR LEAD

Title:

METHOD FOR REDUCTION TREATMENT OF METAL OXIDE OR IRONMAKING WASTE, AND METHOD FOR CONCENTRATION AND/OR RECOVERY OF ZINC AND/OR LEAD

Document Type and Number:

WIPO Patent Application WO/2004/024961

Kind Code:

A1

Abstract:

A method for the reduction treatment of a metal oxide, characterized in that it comprises using, as a raw material, a powder containing a metal oxide, and an alkali metal and a halogen element, and further optionally carbon, mixing said raw material with water to prepare a slurry, subjecting the slurry to dewatering, optionally mixing the dewatered product with another raw material, and reducing the resultant product in a rotary hearth reduction furnace.

Inventors:

ICHIKAWA HIROSHI (JP)
IBARAKI TETSUHARU (JP)
IMURA SHOJI (JP)
ODA HIROSHI (JP)
ABE YOICHI (JP)
TAKAHASHI SHIGEKI (JP)
KANEMORI NOBUYUKI (JP)
SUZUKI SATOSHI (JP)

Application Number:

PCT/JP2003/011654

Publication Date:

March 25, 2004

Filing Date:

September 11, 2003

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
ICHIKAWA HIROSHI (JP)
IBARAKI TETSUHARU (JP)
IMURA SHOJI (JP)
ODA HIROSHI (JP)
ABE YOICHI (JP)
TAKAHASHI SHIGEKI (JP)
KANEMORI NOBUYUKI (JP)
SUZUKI SATOSHI (JP)

International Classes:

C21B13/00; C21B13/10; C22B1/245; C22B5/02; C22B5/10; C22B7/02; C22B13/02; C22B19/30; C22B19/34; (IPC1-7): C22B1/16; C22B1/00; C22B7/02; C22B19/30; C22B19/34; C22B13/02; B09B3/00; C02F11/00

Foreign References:

JP2002194452A	2002-07-10
JPS5329122B2	1978-08-18
JP2001294942A	2001-10-26
JPH10265861A	1998-10-06
JPS55104434A	1980-08-09

Other References: