Title:
METHOD FOR PRODUCING LOW-CARBON FERROMANGANESE
Document Type and Number:
WIPO Patent Application WO/2020/152945
Kind Code:
A1
Abstract:
The production of low-carbon ferromanganese by blowing an oxidizing gas onto the surface of a molten high-carbon ferromanganese bath through a top-blowing lance in a reaction vessel equipped with the top-blowing lance and a bottom blowing tuyere to decarbonize the high-carbon ferromanganese, wherein refining is carried out by blowing the oxidizing gas in such a manner that the flow rate of the oxidizing gas upon the reaching the surface of the bath can become 70 to 150 m/s inclusive. Furthermore, agitation is carried out under such a condition where the agitation power density of the gas to be blown through the bottom blowing tuyere becomes 500 W/t or more.
Inventors:
FUJII YUSUKE (JP)
SATO SHINGO (JP)
KAWABATA RYO (JP)
KIKUCHI NAOKI (JP)
SHIOTA TOSHIO (JP)
HIGUCHI IPPEI (JP)
SATO SHINGO (JP)
KAWABATA RYO (JP)
KIKUCHI NAOKI (JP)
SHIOTA TOSHIO (JP)
HIGUCHI IPPEI (JP)
Application Number:
PCT/JP2019/043811
Publication Date:
July 30, 2020
Filing Date:
November 08, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
MIZUSHIMA FERROALLOY CO LTD (JP)
MIZUSHIMA FERROALLOY CO LTD (JP)
International Classes:
C21C5/30; C21C7/00; C22C33/04
Domestic Patent References:
WO2018123808A1 | 2018-07-05 |
Foreign References:
JPS6447833A | 1989-02-22 | |||
JPS63290242A | 1988-11-28 | |||
JPH09157725A | 1997-06-17 |
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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