... , glass, porcelain, abrasive materials and other industrys. Potassium feldspar is usually red, white or gray.It has a low melting point. ... It is widely used in ceramics, ceramic glaze, glass, porcelain, abrasive materials and other ... . Product Features:1.Effective to sinter in low temperature. 2.Low fusion point. 3.Make the coloring of glaze vibrantlyFeldspar ...