Ferrosilicon smelting in a direct current furnace

Details Ferrosilicon smelting in a direct current furnace Ferrosilicon smelting in a direct current furnace

1992-02-19

1992-12-29

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 1050, 75 1051, C01B 3302

Patent

active

051748100

ABSTRACT:
The present invention is a process for smelting ferrosilicon alloy. The process comprises adding a carbon source and tailings comprising oxides of silicon and iron to a substantially closed furnace. Heat is supplied to the furnace by striking a direct current arc between a cathode electrode and an anode functional hearth. In a preferred embodiment of the present invention, the cathode electrode is hollow and feed to the substantially closed furnace is through the hollow electrode.

REFERENCES:
patent: 3215522 (1965-11-01), Kuhlman et al.
patent: 4820341 (1989-04-01), Lask
patent: 4865643 (1989-09-01), Goins et al.
patent: 4898712 (1990-02-01), Dosaj et al.
patent: 5009703 (1991-04-01), Arvidson et al.

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