Method for operating converter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11124849
APP PUB NO 20200157645A1
SERIAL NO

16611674

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Abstract

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When the decarburization refining of molten iron is performed by top-blowing oxygen gas from the top blowing lance, the oscillation of molten iron, a bubble burst, and spitting due to the bubble burst are suppressed. A refining method for a converter includes decarburizing molten iron in the converter with a top blowing lance having Laval nozzles disposed at the lower end thereof by blowing oxygen gas on the surface of the molten iron in the converter through the Laval nozzles, in which one or both of an oxygen feeding rate from the top blowing lance and lance height LH are adjusted in such a manner that an oxygen accumulation index S(F) is 40 or less.

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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
Kikuchi, Naoki Tokyo, JP 125 1526
Miki, Yuji Tokyo, JP 32 87
Takahashi, Yukio Tokyo, JP 170 1461

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