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Ceramic Raw Materials

Petalite is Lithium Feldspar which is mined in Zimbabwe. It features a very low thermal expansion coefficient and therefore expands/shrinks very little when heated/cooled rapidly So, it is widely used to make heat-resisting ware, heat-resisting glass and special abrasives.
It is also used as lithium source for the glazes and glasses.


GRADE #52 #80 #200
SPECIFICATIONS Li2O 4.0%MIN
Fe2O3 0.1%MAX

TYPICAL ANALYSIS


Grade #52 #80 #200
Physical property
- True Specific Gravity 2.3-2.5g/cm3
- Melting Point 1,300°C
Specification
- Li2O 4.0% Minimum
- Fe2O3 0.1% Maximum
Typical Value
Li2O 4.26% 4.28% 4.29%
SiO2 76.97% 76.87% 76.88%
AI2O3 16.68% 16.81% 16.87%
Fe2O3 0.05% 0.06% 0.05%
Particle Size Distribution
+300 5%
-300~+250 3.2% 0.5%
-250~+180 9.3% 1.1%
-180~+150 7.9% 1.6% 0.1%
-150~+106 15.9% 7.8% 0.3%
-106~+75 16.2% 19.5% 3.1%
-75~+45 16.1% 26.2% 22.5%
-45 26.4% 43.3% 74.0%
-75 42.5% 69.5% 96.5%