Anyang County Deyi supply various models ferrosilicon alloy plant

Si (Taiwan, Hong Kong, said Si) is a chemical element, its chemical symbol is Si, formerly known as silicon. Atomic number 14, relative atomic mass 28.09, two kinds of amorphous and crystalline allotrope, an allotrope of amorphous silicon and crystalline silicon. Metalloid elements belonging to Group IVA of the periodic table. Steel gray crystalline silicon, amorphous silicon is black, the density of 2.4g / cm3, melting point 1420 ℃, boiling point 2355 ℃, crystalline silicon belongs to the atomic crystal, hard and shiny, have semiconductor properties. Chemical properties of silicon lively, at high temperatures with oxygen and other elements combined, insoluble in water, nitric acid and hydrochloric acid, dissolved in hydrofluoric acid and lye, used in making alloys such as ferrosilicon system, silicon, etc., monocrystalline Silicon is an important semiconductor material, used in the manufacture of high-power transistors, rectifiers, solar cells. Silicon are very widespread in nature, the earth's crust contains about 27.6%, mainly crystalline silicon to form silica and silicates are dark blue, very crisp, is typical of semiconductors. Very stable chemical properties. At room temperature, except for hydrogen fluoride, it is difficult to react with other substances.