Very higher purity silicon for semiconductors is acquired using the Siemens approach; the silicon is reacted to generate trichlorosilane, which is initial purified by distillation, then reacted with purified hydrogen on higher purity silicon rods at 1150 oC to yield higher purity, polycrystalline silicon with hydrochloric acid byproduct. Silicon Supplements: https://claytonlmmkk.imblogs.net/86172051/tantalum-carbide-uses-no-further-a-mystery