Method for oxygen-blowing refining of molten iron and top-blowing lance

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11293069
APP PUB NO 20200392592A1
SERIAL NO

16955214

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Abstract

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In a method for oxygen-blowing refining of molten iron, an oxygen-containing gas as a main supply gas is supplied from an inlet side of a blowing nozzle for the oxygen-containing gas passing through an outer shell of the top-blowing lance and blown from the blowing nozzle while a control gas is jetted toward inside of the blowing nozzle for at least part of a period of the oxygen-blowing refining from a spout arranged in a side face of the nozzle at a site where the cross-sectional area of the nozzle minimum takes the minimum in the axial direction of the nozzle or a neighborhood thereof so that at least part of the spout exists in each space formed by dividing into two portions by an arbitrary plane passing through a central axis of the nozzle.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amano, Shota Tokyo, JP 26 104
Hino, Yuta Tokyo, JP 4 1
Kikuchi, Naoki Tokyo, JP 125 1526
Miki, Yuji Tokyo, JP 32 87
Nakase, Kenji Tokyo, JP 8 3
Oda, Nobuhiko Tokyo, JP 47 586
Okuyama, Goro Tokyo, JP 9 3
Takahashi, Yukio Tokyo, JP 170 1461

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