Process for bleaching wood pulp

Details Process for bleaching wood pulp Process for bleaching wood pulp

D - Textiles, Paper

21

C

D21C 9/10 (2006.01)

Patent

CA 2070556

ABSTRACT OF THE DISCLOSURE The present invention relates to a process for bleaching wood pulp, chemical pulp, or old paper, in which, prior to the actual bleaching stages, the fibre material to be bleached is treated with a natural or a synthetic zeolite or a lattice silicate and an organic complex-forming agent that is easily broken down, e.g., citric acid.

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