Calcium carbonate accounts for about 65% of total filler consumption in plastics with an annual world-wide usage of about six million tonnes. It is also the most widely used filler in terms of number of applications. The cheapest grades are low in price and are used primarily to reduce costs. By contrast, the finest grades are an order of magnitude higher in price and are used to modify various properties, both during processing and of the final compounds.
Keywordscalcite limestone chalk marble particle size surface treatment calcium stearate titanate zirconate PVC
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