The GRAFICO® Calcium Carbonate Saver is a carbon dioxide (CO2) application developed and patented by Linde together with the cooperation partner UPM-Kymmene to be used when calcium carbonate (CaCO3) is introduced as a filler in the production of paper qualities containing mechanical pulp like newsprint and SC paper.
The conditions at the paper machines are often such that calcium carbonate starts to dissolve. Papermakers are familiar with problems originated from free calcium in the system. GRAFICO Calcium Carbonate Saver will help to prevent calcium carbonate from dissolving due to local pH changes or slightly acidic conditions, creating conditions for a more stable process.
