Title:
METHOD FOR PRODUCING FERROCHROMIUM, AND FERROCHROMIUM
Document Type and Number:
WIPO Patent Application WO/2013/187347
Kind Code:
A1
Abstract:
Provided is a method for producing ferrochromium, which is capable of producing ferrochromium having a low cobalt content by low-cost simple processes. A method for producing ferrochromium according to the present invention comprises: a step (S1) wherein chromium ore and calcined lime are melted in a furnace, thereby producing a synthetic slag; a step (S2) wherein a reducing agent is added into the synthetic slag so as to reduce cobalt oxide in the synthetic slag, thereby producing a cobalt-containing alloy and a slag; a step (S3) wherein the cobalt-containing alloy and the slag are separated from each other; and a step (S4) wherein a reducing agent is added into the separated slag so as to reduce molten chromium oxide, thereby producing ferrochromium.
Inventors:
SAGA HIDEAKI (JP)
Application Number:
PCT/JP2013/065926
Publication Date:
December 19, 2013
Filing Date:
June 10, 2013
Export Citation:
Assignee:
JFE MATERIAL CO LTD (JP)
International Classes:
C22C33/04; C22B5/04; C22B34/32; C22C27/06
Foreign References:
| JPS5842738A | 1983-03-12 | |||
| JPS5511146A | 1980-01-25 | |||
| JPS50120416A | 1975-09-20 | |||
| JPH03170640A | 1991-07-24 | |||
| JPS5230211A | 1977-03-07 | |||
| JPH0551690A | 1993-03-02 | |||
| JPH0428842A | 1992-01-31 |
Attorney, Agent or Firm:
SHIOJIMA, Toshiyuki (JP)
Toshiyuki Shiojima (JP)
Toshiyuki Shiojima (JP)
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