Commercially, Silicon is purified by heating sand and carbon in an electric furnace. A molten salt electrolysis system is utilized to obtain ultrapure silicon. Elemental silicon is produced commercially via the reduction of silica (SiO2) with coke in an electric furnace, and also the impure products is then refined. On https://bendingmachine37047.bloggip.com/36646695/about-boron-carbide