Calcium carbonate is used in the paper industry as an important filler and coating pigment for the paper industry due to its high quality and cheap price. The fine particles and high whiteness can greatly improve the opacity of the paper and also work to increase the rapid ink absorption speed of the ink absorbing the paper. It also increases the gloss and quality. The leaves do not significantly affect the durability of the papers, so they have become an important and economic component in the paper industry
