China Zirconium Silicate factory and manufacturers | Rongsheng

Short Description:

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


Melting Point


Refractive Index


Mohs Hardness


Thermal Expansion Coefficient



White or off white powder


  1. Chemical properties
Item RS65 RS64.5 RS63.5
ZrO2+HfO2 65.0 min

64.5 min

63.5 min

Fe2O20. 06 max0. 08 max0. 12 maxTi020.10 max0.12 max0.18 max

  1. Product standard


Average mesh




High-grade sanitary porcelain

High-grade daily-use porcelain

High-grade crystal brick





Middle and low class sanitation porcelain,external and internal brick, archaized brick, engobe, body, etc.

                 RS-2.0               D50≤2.0um



1Building ceramics, sanitary ceramics, daily-use ceramics, special ceramics, etc.High refractive index 1.93-2.01Chemical stabilityIt 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.

2Refractory materials and products, glass kiln zirconium ramming material, castable, spray coating, etc. (zirconium silicate melting point is very high :2500℃)

3TV industry color kinescope, glass industry emulsified glass, enamel glaze production

4Plastics industry: used as fillers requiring stability, heat resistance and chemical erosion resistance



  • Zirconium Silicate: Zirconium Silicate
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