FOAMING RESTRAINING AGENT

PROBLEM TO BE SOLVED: To secure the operability of a converter comparable to the case using fluorite in the converter while restraining the foaming of slag, in the converter refining without using the fluorite. SOLUTION: A foaming restraining agent is obtained by adding and mixing, by weight ratio,...

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Bibliographic Details
Main Authors TANAKA SHIGENORI, HARASHIMA KAZUMI
Format Patent
LanguageEnglish
Published 18.12.2001
Edition7
Subjects
CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Summary:PROBLEM TO BE SOLVED: To secure the operability of a converter comparable to the case using fluorite in the converter while restraining the foaming of slag, in the converter refining without using the fluorite. SOLUTION: A foaming restraining agent is obtained by adding and mixing, by weight ratio, 10-5% carbon to a flux for refining containing >=80 wt.% lime powder having <=100 μm particle diameter and is formed into a pellet shape of <=50 mm by a mechanical component-pressing method. Furthermore, as the above flux for refining, the one composed of 5-20 wt.% soda glass powder and the balance substantially lime powder having <=100 μm grain size, is used.
Bibliography:Application Number: JP20000170242