DEPRESSANT FOR FOAMING OF IRON AND STEEL SLAG

DEPRESSANT FOR FOAMING OF IRON AND STEEL SLAG

PROBLEM TO BE SOLVED: To quickly depress foaming of iron and steel slag developed in the case of being a pre-treatment of molten iron or blowing in a converter. SOLUTION: (1) A depressant used for this phenomenon is composed in the blending ratio by wt.% of 20-70% slag, 20-70% organic material of pa...

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Hauptverfasser: NASHIWA HAJIME, KANAMORI TADASHI
Format: Patent
Sprache:eng
Schlagworte:
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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creator NASHIWA HAJIME
KANAMORI TADASHI
description PROBLEM TO BE SOLVED: To quickly depress foaming of iron and steel slag developed in the case of being a pre-treatment of molten iron or blowing in a converter. SOLUTION: (1) A depressant used for this phenomenon is composed in the blending ratio by wt.% of 20-70% slag, 20-70% organic material of paper-making waste or the like, and 5-50% calcium carbonate. (2) In the above depressant, as auxiliary components, it is desirable to blend at least one among 3-15% Fe-Si alloy, 3-15% Ca or/and Ca alloy, 3-15% Mg or/and Mg alloy, 5-20% carbon powder, 5-30% Al dross and 5-15% iron powder.
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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
title DEPRESSANT FOR FOAMING OF IRON AND STEEL SLAG
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