Really large purity silicon for semiconductors is acquired using the Siemens system; the silicon is reacted to produce trichlorosilane, that is to start with purified by distillation, then reacted with purified hydrogen on superior purity silicon rods at 1150 oC to generate substantial purity, polycrystalline silicon with hydrochloric acid byproduct. https://erickhigfc.like-blogs.com/36297076/5-essential-elements-for-ti-carbide