Silicon carbide crude is produced by mixing silica (SiO2) with carbon (C) in an electric resistance furnace at temperatures around 2,500 C.
The chemical reaction in the SiC process may be represented by the formula: SiO2 + 3C SiC + 2CO
Washington Mills employs two different manufacturing methods for producing SiC crude: the traditional Acheson process and large furnace technology. The production of silicon carbide crude requires careful attention to the raw material mix and the regulation of power into the furnace.