... silica sand 2.For glass,chemicals construction 3.For foundry,plastics,coating 4.Quartz powder SiO2 sand 1. ... ; Ferrosilicon Smelting; Solvent metallurgy;( glass,chemicals construction ,ceramics,foundry,plastics ,coating and others).2.Other name:Quartz sand,Quanrtz ... 100mesh,100-250mesh.4. The company produces high-quality products using selected natural quartz stone, 5.The chemical composition ...