| Calcium carbonate (CaCO3) as a filler in wood containing papers...
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 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 CaCO3 starts to dissolve and papermakers are familiar with problems originated from free calcium in the system. GRAFICO® Calcium Carbonate Saver will help to prevent CaCO3 from dissolving due to local pH-changes or slightly acidic conditions and create conditions for more stable process. |
