... casting, petroleum, chemical, abrasive etc 1. Quartz Properties: quartz is the most common silica mineral, its main content is SiO2, ... color: colorless, white, cyan gray.2. Main applications: quartz sand (powder) mainly applied in the industries of glass, refractory, ... 1 Specifications Used in Metallurgy IndustryUse & IndexSiO2Al2O3Fe2O3CaOP2O5TiO2RefractorinessUltra Grade Silica Brick≥98.5≤0.5≤0.5≤0. ...