QuartzKaolinFeldspar
Wollastonite is a naturally occurring calcium silicate that is formed from quartz and calcium carbonate at a temperature of about 450°C. The structure of the individual wollastonite particles is determined by the respective geological formation and by the processing technology selected. Depending on the application as a high-performance filler, we produce blocky particle shapes with a low length/diameter ratio (Low Aspect Ratio — TREMIN® 283 product series) and pronounced acicular wollastonite particles with a high length/diameter ratio (High Aspect Ratio— TREMIN® 939 product series).
Technical properties:
- Mohs hardness of 4.5
- density: 2.85 g/cm³
- low coefficient of thermal expansion of 7*10^-6/K in the temperature range from 20 to 300 °C
- chemically inert
If you would like to know more about TREMIN® wollastonite please do not hesitate to contact us!