Potash feldspar introduction
Potash feldspar is an alkali metal or alkaline earth metal aluminosilicate mineral such as potassium, sodium or calcium, also known as Changshi mineral. Potassium feldspar (KAlSi3O8), also commonly known as Orthodox, is a monoclinic system, usually fleshy red, white or gray. The density is 2.54-2.57g/cm3, the specific gravity is 2.56～2.59g/cm3, the hardness is 6. The theoretical composition is SiO264.7% Al2O318.4%, K2O16.9%. It has the characteristics of low melting point (1150±20°C), long melting interval and high melt viscosity. It is widely used in industrial sectors such as ceramic billets, ceramic glazes, glass, electric porcelain, abrasive materials and potassium fertilizers. In addition to feldspar, there are two homomorphic polymorphic variants: translucent feldspar and potassium micro-plagioclase. The former is also a monoclinic system, also known as feldspar; the latter is a triclinic system. In addition to being used as a raw material for the glass industry (about 50-60% of the total amount), feldspar minerals account for 30% of the ceramic industry, and the rest are used in chemical, glass flux, ceramic body ingredients, ceramic glazes, enamel materials. , abrasives, fiberglass, welding electrodes and other industries. It is mainly used for glass and ceramics, and can also be used to prepare potassium fertilizer. Potassium feldspar with good quality is used to manufacture TV imaging glass bulbs. Potassium feldspar: K2O.Al2O3.6SiO2, of which K2O9.55%, Al2O316% or more, SiO270%, density 2.56g/cm3, Mohs hardness of 6, monoclinic system, color white, red, milky white, melting point 1290 .C.
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