CONVERTER BLOWING CONTROL METHOD AND CONVERTER BLOWING CONTROL SYSTEM
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Apr 30, 2021
filing date -
Jul 1, 2020
priority date (Note) -
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Abstract
A converter blowing control method includes: calculating, by heat balance calculation and material balance calculation, an amount of oxygen supplied and an amount of a cooling material or a rising heat material charged to control a temperature and a component concentration of molten steel at end of blowing in a converter to target values; controlling the blowing in the converter based on the calculated amount of oxygen supplied and the calculated amount of a cooling material or a rising heat material charged; estimating a pre-blowing molten iron temperature that is a temperature of molten iron used as a raw material for blowing to be a target of the heat balance calculation, charged into the converter, and is in a state immediately before start of the blowing; and using the estimated pre-blowing molten iron temperature as a charged molten iron temperature in the heat balance calculation.
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