Feldspar Mines N Minerals
Potassium feldspar (Kspar) has technical advantages over sodium feldspar (Naspar), as it forms a melt of high viscosity that decreases only slightly with increased temperature, thereby making ceramics stronger and more refractory Kspars are mainly used in electrical porcelain applications and porcelain enamels. Naspars are more often used in ceramics because they are cheaper. After clay