... refined silica sand 2.For glass,chemicals construction 3.For foundry,plastics,coating 4.Quartz powder SiO2 sand 1.Application ... of QK quartz sand Glassmaking; Refractory; Ferrosilicon Smelting; Solvent metallurgy ... ,plastics ,coating and others).2.Other name:Quartz sand,Quanrtz powder,SiO2 Sand,SiO2 poweder .3.Size : 16-40mesh, 40 ...