Title:
METHOD OF AND APPARATUS FOR MANUFACTURING MEDIUM AND LOW CARBON FERROMANGANESE
Document Type and Number:
WIPO Patent Application WO/1994/026946
Kind Code:
A1
Abstract:
An object of this invention is to provide a method of and an apparatus for manufacturing medium and low carbon ferromanganese, capable of reducing the running cost and manufacturing medium and low carbon ferromanganese at a low cost. To achieve this object, the method according to the present invention consists mainly of the steps of placing molten high carbon ferromanganese in a top-and-bottom blown type refining vessel, and blowing into the bath an oxygen gas from the upper side thereof and a mixed gas of the following composition from the bottom thereof. The mixed gas consists of 65-10 % of CO, 0-25 % of CO2 and 0-10 % of N2. A simple argon gas is used as a bottom blowing gas in some cases.
Inventors:
NARAHARA HIROSHI (JP)
SUZUKI KOUJI (JP)
SUZUKI KOUJI (JP)
Application Number:
PCT/JP1993/001476
Publication Date:
November 24, 1994
Filing Date:
October 14, 1993
Export Citation:
Assignee:
MIZUSHIMA FERROALLOY CO LTD (JP)
NARAHARA HIROSHI (JP)
SUZUKI KOUJI (JP)
NARAHARA HIROSHI (JP)
SUZUKI KOUJI (JP)
International Classes:
C22C33/04; C21C5/00; C21C5/35; C21C7/068; (IPC1-7): C22C33/04
Foreign References:
| JPH024938A | 1990-01-09 | |||
| JPS61272345A | 1986-12-02 | |||
| JPS63195244A | 1988-08-12 | |||
| JPS59215458A | 1984-12-05 |
Other References:
See also references of EP 0652296A4
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