Zircon flour produced by milling zircon sand to a closely controlled particle size; 99% passing 325 mesh, this zircon flour is especially suitable for the manufacture of frits, refractories and foundry coatings. Product origin : India Key Specifications/Special Features : Zircon Flour is used in the ceramic glaze, glass, refactory and plastic industry. Zircon Flour is used in the ceramic glaze, glass, refactory and plastic industry. Zircon Flour is ideal for use as an opacifier for glaze frits. It can be used as a refactory wash for glost klins. It finds use as a fine constituent in pressed zircon refactory shapes and as a filler for epoxy resins.