C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
307/34, 53/72
C21C 5/52 (2006.01) C21B 13/00 (2006.01) C21B 13/12 (2006.01)
Patent
CA 1081968
ABSTRACT It is known to melt steel in a closed electrical- resistance furnace, a layer of slag being used to cover the molten metal. In this invention, an oxidizing burden having a refining action is charged into the furnace, a deep bath of the molten steel is maintained in the furnace, the volume of the molten metal corresponding to between 5 hours and 2 days production, and a thick cover of slag is maintained covering the molten steel, the slag having a decarburizing, dephosphorizing, and desulphurizing effect, the thickness of the slag cover being between 250 and 1500 mm or corresponding to 1 to 10 days production. These measures permit the melting process to be carried out continuously, and the furnace can be heated con- tinuously by electrodes immersed in the slag.
223556
Rath Gero
Roth Haye
Demag Aktiengesellschaft
Ridout & Maybee Llp
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