Chinese Manufacture Supply Potassium Feldspar With Competitive Price
Introduction
Feldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and
extender in paint, plastics, and rubber. In glassmaking, alumina from feldspar improves product
hardness, durability, and resistance to chemical corrosion. In ceramics, the alkalis in feldspar
(calcium oxide, potassium oxide, and sodium oxide) act as a flux, lowering the melting
temperature of a mixture. Fluxes melt at an early stage in the firing process, forming a glassy
matrix that bonds the other components of the system together. In the US, about 66% of
feldspar is consumed in glassmaking, including glass containers and glass fiber. Pottery (including
electrical insulators, sanitaryware, tableware, and tile) and other uses, such as fillers, accounted for
the remainder
Chemical analysis
SiO2 | Al2O3 | Na2O | K2O | Fe2O3 | moisture |
70±1% | 18±1% | 5±0.5% | 6.5±0.5 | 0.03%max | 13±2% |
Application : Using in glass industry, cement, ceramic, coating etc.