Feldspar

Processing Technology

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Application of Feldspar powder

Feldspars are aluminosilicates containing varying amounts of calcium, potassium, or sodium. In glassmaking, feldspar provides alumina for improving hardness, durability, and resistance to chemical corrosion. In ceramics, feldspar is used as a flux, lowering the vitrifying temperature of a ceramic body during firing and forming a glassy phase. Glass and ceramics continued to be the major end uses of feldspar. The required particle size are 20-400mm block, 60 mesh, 80 mesh, 100 mesh, 120 mesh, 200 mesh and 325 mesh.

Chemical composition of potassium feldspar Standard(JC/T 859-2000)

Chemical Composition	Superior Quality	First Grade	Qualified Quality
K2O+Na2O	≥ 13.5%	≥ 12.0%	≥ 10.5%
K2O	≥ 11.0%	≥ 9.5%	≥ 8.0%
Fe2O3+TiO2	≤0.18%	≤0.22%	≤0.25%
TiO2	≤0.03%	≤0.05%	≤0.10%