Silicon smelting process in direct current furnace

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

C - Chemistry, Metallurgy

01

B

C01B 33/025 (2006.01) C22B 4/00 (2006.01)

Patent

CA 2047278

SILICON SMELTING PROCESS IN DIRECT CURRENT FURNACE 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.

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