Silicon smelting process in direct current furnace

Details Silicon smelting process in direct current furnace Silicon smelting process in direct current furnace

1990-08-13

1991-04-23

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 105, 423350, C22B 400

Patent

active

050097032

ABSTRACT:
The instant invention is a process for preparing silicon metal in a direct current, submerged-arc furnace. The process comprises adding a source of silicon dioxide and a source of carbon to a substantially closed furnace. Heat is provided to the furnace by striking a direct current arc between a moveable cathode and a anode functional hearth. Silicon metal is tapped from the furnace. The described process may also be used to prepare silicon metal alloys.

REFERENCES:
patent: 3215522 (1960-11-01), Kuhlmann
patent: 4865643 (1989-09-01), Goins

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