Feldspar is a potassium, sodium, calcium, barium and other alkali metal or alkaline earth metal aluminum silicate minerals, crystal structure is a frame-like structure. The main ingredients of SiO 2, Al 2 O 3, K 2 O, Na 2 O, CaO and so on. Feldspar-group minerals in the earth's crust in the most widely distributed, accounting for about 50% of the weight of the total crust. They are a widespread rock-forming minerals, of which 60% vested in the existence of magma, 30% are located in metamorphic rocks, 10% exists in the sedimentary rocks are mainly clastic rocks, but only when a considerable enrichment of feldspar is possible as industrial minerals. Feldspar There are four main components: Potash feldspar, sodium feldspar, calcium feldspar, barium feldspar, feldspar group minerals of the main physical and chemical properties are as follows:

K-feldspar: K 2 O. Al 2 O 3.6 SiO 2, in which K 2 O 9.55%, Al 2 O 3 16% or more, SiO 2 70%, density of 2.56g/cm 3, Mohs hardness of 6, monoclinic crystal system, color is white, red, cream, melting point 1290 o C.

Albite: Na 2 O. Al 2 O 3.6 SiO 2, in which Na 2 O 8% below, K 2 O 5-6%, Al 2 O 3 16% or more, SiO 2 70%, density 2.605g/cm 3 Mohs hardness is 6, triclinic, color is white, melting point 1100 o C.

1, characteristics and chemical composition:
Fluctuations in the hardness of feldspar in the 6-6.5, specific gravity fluctuations in the 2-2.5, sexual crisp, have a higher compressive strength, acid have strong chemical stability. K-feldspar colors mostly red meat, there are gray, white and brown. Albite and white, gray and light yellow, calcium feldspar is white or light gray.

Chemical Composition SiO2 Al2O3 K2O Na2O S P
Content 70.0 17 7-10 3-9 00.03 0.03
2, use: Glass takes over, tubes, ceramics, enamel, glass, electrodes and so on.
Third, our factory produce feldspar good quality and large output, variety for example is as follows:

Name Specifications Chemical Composition
Long powder 40-80 80-120 120 SiO2: 70% Al2O3: 16% P+S>0.05
K2O+Na2O>13%(18%)