Method for brightening mechanical pulps

Details Method for brightening mechanical pulps Method for brightening mechanical pulps

D - Textiles, Paper

21

C

D21C 9/00 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2384399

The present invention is directed to an improved method for brightening mechanical pulp under neutral or alkaline papermaking conditions. The improvement comprises the steps of: (a) separating neutral or alkaline pulp dilution water into a high-solids stream and a neutral or alkaline low-solids stream; and (b) reusing the neutral or alkaline low-solids stream for pulp dilution purposes prior to a bleaching process.

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