Method for reducing chromium containing raw material

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United States of America Patent

PATENT NO 8262766
APP PUB NO 20100037728A1
SERIAL NO

12543798

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Abstract

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An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD )2-4 WAKINOHAMA-KAIGANDORI 2-CHOME CHUO-KU KOBE-SHI HYOGO 651-8585

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harada, Takao Kobe, JP 63 398
Kobayashi, Isao Kobe, JP 212 2421
Miyahara, Itsuo Kobe, JP 14 36
Sugitatsu, Hiroshi Kobe, JP 29 74
Tanaka, Hidetoshi Kobe, JP 72 567

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