Industrial Metal Silicon High Purity 99% Si 2202/3303/411

In industry, metallic silicon is usually produced by reducing silicon dioxide with carbon in an electric furnace. Chemical reaction equation: SiO2+2C → Si+2CO. The purity of silicon obtained in this way is 97-98%, which is called metallic silicon. After melting and recrystallization, impurities were removed with acid to obtain metallic silicon with a purity of 99.7-99.8%. The main component of metallic silicon is silicon, therefore it has similar properties to silicon. Silicon has two allotropes: amorphous silicon and crystalline silicon. Amorphous silicon is a gray black powder, which is actually a type of microcrystalline material. Crystalline silicon has the crystal structure and semiconductor properties of diamond, with a melting point of 1410 ℃, a boiling point of 2355 ℃, a Mohs hardness of 7, and brittleness. Amorphous silicon is chemically active and can burn violently in oxygen. It reacts with non metals such as halogens, nitrogen, and carbon at high temperatures, and can…

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