SILICON SMELTING PROCESS IN DIRECT CURRENT FURNACE

摘要

SILICON SMELTING PROCESS IN DIRECT CURRENT FURNACE 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.