Title:
METHOD FOR OXYGEN TRANSMISSION SMELTING OF MOLTEN IRON, AND TOP-BLOW LANCE
Document Type and Number:
WIPO Patent Application WO/2019/123873
Kind Code:
A1
Abstract:
A method for oxygen transmission smelting of molten iron, wherein, for at least part of a period of oxygen transmission smelting, in a jetting nozzle for an oxygen-containing gas, the nozzle penetrating through an outer shell of a top-blow lance, the oxygen-containing gas as a main supply gas is supplied from the jetting nozzle from an entrance side of the jetting nozzle while a control gas is spouted toward the inside of the jetting nozzle from a spouting port 3 provided in a nozzle side surface at a location 1 in the axial direction of the nozzle where the cross-sectional area of the nozzle is smallest, or at a location near the location 1, and disposed so that at least a portion of the spouting port is present in both spaces in a case in which the nozzle is divided in two by an arbitrary plane passing through the center axis of the nozzle.
Inventors:
ODA NOBUHIKO (JP)
OKUYAMA GORO (JP)
AMANO SHOTA (JP)
NAKASE KENJI (JP)
TAKAHASHI YUKIO (JP)
HINO YUTA (JP)
KIKUCHI NAOKI (JP)
MIKI YUJI (JP)
OKUYAMA GORO (JP)
AMANO SHOTA (JP)
NAKASE KENJI (JP)
TAKAHASHI YUKIO (JP)
HINO YUTA (JP)
KIKUCHI NAOKI (JP)
MIKI YUJI (JP)
Application Number:
PCT/JP2018/041438
Publication Date:
June 27, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21C5/32; C21C5/46
Foreign References:
| JP2004156083A | 2004-06-03 | |||
| JP2001220617A | 2001-08-14 | |||
| JPH08260029A | 1996-10-08 | |||
| JP2000234116A | 2000-08-29 | |||
| JP2004156083A | 2004-06-03 |
Other References:
See also references of EP 3730632A4
Attorney, Agent or Firm:
GINZA MARONIE P.C. (JP)
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