PCC
Precipitated Calcium Carbonate
Precipitated Calcium Carbonate is obtained from Limestone calcination over 900°C. Limestone is burned, to form lime from which pcc is obtained by consequtive chemicals reactions under pressure.Since chemical reactions are concerned,impurities are eliminated by outstanding chemical process control to form a ideal whiteness,particle size and crystal shape. PCC crystals have uniform crystal shape and particle size distribution, not like Ground Calcium Carbonate.
PCC production technique can be illustrated as follows ;
* CaCO3 > CaO + CO2 (calcination Process)
* CaO + H2O > Ca(OH)2 (milk of lime)
* Ca(OH)2 + CO2 > CaCO3 + H2O (Precipitation)
Precipitated calcium carbonate (PCC) is a white, bright, synthetic material that can be produced in a variety of particle shapes (morphologies) and sizes for use as pigments in filled and coated papers, TiO2 saving high value added filler in paints and plastics,surface enhancer,etc…
The size and shape of the PCC particles determine many of the important properties of the newsprint, copy paper, and magazines commercially produced throughout the world. PERO outline some of these PCC products as below.