Method of refining ferro-alloys

A ferro-alloy, namely ferrochrome or ferromanganese, is refined by being heated to at least 100 DEG C above its melting point to form a bath whereupon oxygen is blown into the melt, below the bath surface, within a protective gas envelope. The rate of oxygen blowing is so chosen that 1% of carbon is...

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Bibliographische Detailangaben
Hauptverfasser: STADLER, FRITZ, FICHTE, RUDOLF, BROTZMANN, KARL, DUDERSTADT, GUNTER, BREUER, FRIEDRICH
Format: Patent
Sprache:eng
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Zusammenfassung:A ferro-alloy, namely ferrochrome or ferromanganese, is refined by being heated to at least 100 DEG C above its melting point to form a bath whereupon oxygen is blown into the melt, below the bath surface, within a protective gas envelope. The rate of oxygen blowing is so chosen that 1% of carbon is oxidized within a period not to exceed about ten minutes, preferably not more than five minutes.