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HOGFORS OCH PERSBO AB
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HOGFORS OCH PERSBO AB
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Application filed by HOGFORS OCH PERSBO ABfiledCriticalHOGFORS OCH PERSBO AB
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Publication of FR524075ApublicationCriticalpatent/FR524075A/fr
C21B13/00—Making spongy iron or liquid steel, by direct processes
C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
C21B13/023—Making spongy iron or liquid steel, by direct processes in shaft furnaces wherein iron or steel is obtained in a molten state
C21B13/026—Making spongy iron or liquid steel, by direct processes in shaft furnaces wherein iron or steel is obtained in a molten state heated electrically
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FR524075A1920-09-131920-09-13Procédé et four pour la réduction d'oxydes métalliques (minerais)
ExpiredFR524075A
(fr)