Method in connection with steel production
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United States of America Patent
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Jun 29, 2010
Grant Date -
Sep 20, 2007
app pub date -
Apr 6, 2005
filing date -
Apr 7, 2004
priority date (Note) -
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Abstract
A method of producing a fluxing agent that can be used in production of steel, preferably stainless steel, employs as a raw material a hydroxide sludge that results from neutralization of metal-contaminated pickling liquid from a pickling step for a steel and contains at least one fluoride-containing compound. The hydroxide sludge is calcined. Steel, preferably stainless steel, is produced by decarburizing a steel heat, whereby a slag is formed on top of the steel heat, and adding a fluxing agent to the slag.
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