... 2, Advanced techniquic ceramic industry 3, Zirconium silicate ISO, SGS, BV approved Introduction:Zirconium silicate, also zirconium orthosilicate, (ZrSiO4) is a ... zirconium. It occurs in nature as the zircon, a silicate mineral. Applications:1) Cream-white, it used as opacifier for ... .3) Fire-proof materials.4) Filling materials for resin and paint. Factory Price for 65% zirconium silicate ash