Fine silicic acid zirconia (ZrSO4,) from natural zircon sand by ultra-fine grinding, in addition to iron, titanium and other process with an appearance of ultra-fine powder of white powder, which is characterized by high refractive index (1.93~ 2.01), good chemical stability and high temperature performance. Widely used in construction ceramics, sanitary ceramics, daily ceramics and other ultra-fine zirconium silicate opacifier in the glaze or in the green body from the whitening effect, another in precision casting, color picture tubes, float glass, enamel materials and other industries also have a wide range of uses. First of all, the ultra-fine zirconium silicate has a high refractive index. The opacifiers the main factors determining the opacification effect three points: First, the emulsifying agent and the matrix (base glaze and basic blank) the refractive index difference between the difference the greater the OPAQUE the better. Opacifier particles fine enough near the visible wavelength range 380nm ~ 780nm (0.38μm ~ 0.78μm) Opaque best. Emulsifying agent sufficient stability, Opaque-phase crystal as well. Zirconium silicate precisely with the above conditions. With zirconium silicate on the firing atmosphere is not sensitive enough, and good high temperature stability characteristics, has been completely replaced by the tin oxide and titanium dioxide ceramic opacification whitening choice of raw materials.Secondly, fine zirconium silicate has a good cover and liquidity, when it is used as a ceramic brightener, uniform green body covered, to improve the whiteness and smoothness of the ceramic surface.UseCeramic glaze opacifier building ceramics, sanitary ceramics, porcelain, special ceramics.Refractory materials and products investment casting shell and heartwood, foundry refractory coating, fire-resistant insulating material.The plastic used as a stable, heat resistance, chemical erosion filler.
