In the paper industry, Lime in the form of Calcium Oxide is used to regenerate Caustic Soda in the pulp making process.
Precipitated Calcium Carbonate (CALPREC PA) is used as a filler which increases sheet volume and porosity ensuring whiteness and opacity levels significantly superior to those obtained with the use of other non-synthetic fillers.
Thanks to its excellent optical properties Calprec PA is particularly useful in fine papers.