potash feldspar for ceramics

potash feldspar 1. SiO2: 70-75% K2O: 3.4-5.0% 2. Whiteness:90 3.Application: ceramics 4. Size:20-2500mesh

potash feldspar

We are mines owner and manufacturer of Feldspar and Quartz. We are available with Sodium Feldspar, Potash Feldspar And Quartz. We are having with us, all the specification and the mesh required. We can supply upto 10000MT / Month. We keep the customer satisfaction as us priority. We have the special Labs to examine the product before supplying. With us you can hope about the best quality and the quantity.

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.

SiO2: 70-75%  

K2O: 3.4-5.0%

Al2O3: 13.8-16.9%  

Na2O: 2.7-5.0%

P≤0.20%

S≤0.03%

H2O:0.5%

LOI: 1.0

potash feldspar for ceramics