Process for bleaching hardwood pulp

Details Process for bleaching hardwood pulp Process for bleaching hardwood pulp

D - Textiles, Paper

21

C

D21C 9/16 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2063351

A process is provided for peroxygen bleaching of high yield pulp in which sodium carbonate replaces sodium hydroxide and sodium silicate. The process employs a chelating agent as a substitute for the silicate normally required so that the process can operate as a closed cycle system.

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