Fused silica for refractory,casting,optical glass

FUSED SILICA Fused Silica is manufactured from deliberated silica sand, through high temperature fusion, cooling, smash and selecting. The appearance is colorless and transplanted, a bit of them will transplanted frog shape. And it can be processed to all kinds at the request of customers. Fused Silica Lump Composition SiO2: 99.92%-99.90% Fe2O3: 15ppM max Li2O:1.0ppM max Al2O3: 25ppM max K2O: 20ppM max Na2O: 11ppM max Fused Silica Grit COMPOSITION: SiO2: 99.92%-99.90% Fe2O3: 20ppM maxLi2O:1.0ppM maxAl2O3: 30ppMK2O: 20ppM maxNa2O: 20ppM max Size Range: 5mm-2mm 2mm-1mm 1mm-0.1mm 2mm-0 1mm-0 The above size could be used in precisen casting, grinding wheel abrasives, highly quality glass products, refractory material.