ZIRCONIUM SILICATE CHINESE SUPPLIERS -325MESH 10101-52-7 -
SIGMA-ALDRICH
Description of Zirconium Silicate
Zirconium silicate is a non-toxic, odorless white or off-white
powder. The raw material is natural high-purity zircon sand
concentrate, which is then processed through superfine grinding,
iron removal, titanium processing, and surface modification
treatment.
Zirconium silicate has a high refractive index of 1.93-2.01 and
stable chemical performance. It is a high quality and low price
opacifier for opacification. It is widely used in the production of
various building ceramics, sanitary ceramics, daily ceramics and
first-class handicraft ceramics. Zirconium silicate has been widely
used in ceramic production because of its good chemical stability,
so it is not affected by the burning atmosphere of ceramic, and can
improve the binding performance of ceramic glaze significantly and
improve the hardness of ceramic glaze. Zirconium silicate has been
further applied in the production of color picture tube, emulsified
glass and enamel glaze in the glass industry.
1. Physical properties
| Specific Gravity | 4.69 |
| Melting Point | 2500°C |
| Refractive Index | 1.97 |
| Mohs Hardness | 7.5 |
| Thermal Expansion Coefficient | 4.2*10-6 |
| Apprearance | White or off white powder |
2. Chemical properties
| Item | RS65 | RS64.5 | RS63.5 |
| ZrO2+HfO2 | 65.0 min
| 64.5 min
| 63.5 min
|
| Fe2O2 | 0. 06 max | 0. 08 max | 0. 12 max |
| Ti02 | 0.10 max | 0.12 max | 0.18 max |
3. Product standard
| Type | Average mesh | Application |
| RS-1.0 | D50≤1.0um | High-grade sanitary porcelain High-grade daily-use porcelain High-grade crystal brick |
| RS-1.2 | D50≤1.2um |
| RS-1.5 | D50≤1.5um | Middle and low class sanitation porcelain,external and internal
brick, archaized brick, engobe, body, etc. |
| RS-2.0 | D50≤2.0um |
Application
1) Building ceramics, sanitary ceramics, daily-use ceramics,
special ceramics, etc.(High refractive index 1.93-2.01,Chemical
stability,It is an excellent and inexpensive opacifying agent,It is
an excellent and inexpensive opacifying agent,In the processing and
production of ceramic glaze, the scope of use is wide and the
amount of use is large.)
2) Refractory materials and products, glass kiln zirconium ramming
material, castable, spray coating, etc. (zirconium silicate melting
point is very high :2500℃)
3) TV industry color kinescope, glass industry emulsified glass,
enamel glaze production
4) Plastics industry: used as fillers requiring stability, heat
resistance and chemical erosion resistance
