Method of producing cellulosic pulp

Details Method of producing cellulosic pulp Method of producing cellulosic pulp

D - Textiles, Paper

21

B

D21B 1/02 (2006.01) D21B 1/16 (2006.01) D21C 1/00 (2006.01)

Patent

CA 2073048

2073048 9106700 PCTABS00005 Mechanical and chemimechanical cellulose pulp, particularly paper pulp, is produced at a low energy input by disintegrating and beating wood material in one or more stages. Acccording to the invention, a substance capable of forming complexes with polyvalent metal ions, particularly calcium ions, so-called complexing agent, is added to the wood material prior to the beating process in order to replace said calcium or other polyvalent metal ions with sodium ions, therewith a further reduction in the energy input is obtained.

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