Method of rapidly decarburizing ferro- alloys with oxygen

Method of rapidly decarburizing ferro- alloys with oxygen

The invention relates to a method of rapidly decarburizing a high-carbon ferro-alloy with oxygen for avoiding an undesirable oxidation of the principal alloying elements, especially chromium or manganese, comprising blowing an oxidizing gas under the surface of a bath of molten ferro-alloy from one...

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Hauptverfasser: FICHTE, RUDOLF, DUDERSTADT, GUNTER, BREUER, FRIEDRICH, STADLER, FRITZ, BROTZMANN, KARL
Format: Patent
Sprache:eng
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ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator FICHTE, RUDOLF
DUDERSTADT, GUNTER
BREUER, FRIEDRICH
STADLER, FRITZ
BROTZMANN, KARL
description The invention relates to a method of rapidly decarburizing a high-carbon ferro-alloy with oxygen for avoiding an undesirable oxidation of the principal alloying elements, especially chromium or manganese, comprising blowing an oxidizing gas under the surface of a bath of molten ferro-alloy from one or more gas-jacketed nozzles in an amount ranging between substantially 3 and 15 m3 S.T.P. per metric ton of ferro-alloy with reduction of the carbon content of the ferro-alloy at a rate of about 0.2% to 1%. Comminuted solids, especially particles of oxides of alkaline-earth metals such as powdered lime, may be admixed with the oxidizing gas to prevent the ejection of molten metal from the bath.
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subjects ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title Method of rapidly decarburizing ferro- alloys with oxygen
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