Foundry Silica Sand, Color : Grey, Grade : 99.5%

The silica sand for glass (with Silica powder), also known as quartz is a hard, wear-resistant, chemical stability of minerals, the main mineral component is quartz, the main chemical ingredient is SiO2, the color of the powder is white or colorless. Advantage 1) High quality and purity, anti-corrosive, anti-acid and anti-alkali. 2) Competitive price.we have our own silica stone mining.Promise best price with good quality. 3) Various sizes. all kinds of silica sand sizes are available according to your requirements. Applications 1.Widely used for producing optical glass. 2.Refractory material. 3.Metallurgy, ceramic, foundry and abrasives etc.