Beneficiation and mineral processing of bauxite and feldspar
· 5) FELDSPAR Feldspars melt at ~1150oC. Generally, feldspar is used in the manufacture of glass products (70%), in ceramics and other products (30%). Feldspar is also used Filler (in paint, in mild abrasives, urethane, latex , and as a welding rod coating). Feldspar does not have a strict melting point, since it melts gradually over a range of .