Method for screening of defibered chlorine dioxide bleached pulp

Details Method for screening of defibered chlorine dioxide bleached pulp Method for screening of defibered chlorine dioxide bleached pulp

1988-10-04

1991-03-12

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With regeneration, reclamation, reuse, recycling or...

162 55, 162 89, D21C 914, D21D 502

Patent

active

049990853

ABSTRACT:
A method for the screening of defibred pulp bleached in several steps. In the method, the pulp coming from an acidic bleaching step (2) is screened (3, 4, 5, 6) at the same time as it is treated with an alkali. In this way, no separate alkali stage is needed.

REFERENCES:
patent: 4220498 (1980-09-01), Prough
patent: 4274913 (1981-06-01), Kikuiri et al.
patent: 4529479 (1985-07-01), Tuomi

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