Rhombohedral and chrysanthemum calcium carbonate can be used as paper filling and coating, it would be advantageous to provide the paper some excellent properties, such as bulk, brightness, opacity, smoothness, writing suitability, printability and other properties. It is worth for us to investigate this item theoretically, and great economical benefits will be achieved. However the studies of this item have not been found in our country.
The precipitated calcium carbonate is prepared...