... us: As one of the top manufactory and suppliers of Olivine Sand for Refractory and Foundry industry in China ... Olive sand is now widely used as coating powder for its high fusion point, low uniform thermal expansion, ... alloy,refractory industries, glass industries, cement, foundry, construction for coating application.FeaturesCompared with Zircon sand, brown sapphire, quartzes ... %-1%0.2%-0.5%≥1750 °C