Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1989-09-11
1991-09-10
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
162 49, 423165, 423183, 423432, 423641, D21C 1104
Patent
active
050471198
ABSTRACT:
An improved method for causticizing the green liquor formed in a kraft paper plant by contacting the green liquor with lime to thereby form white liquor followed by clarifying the white liquor by removing the lime mud therefrom in a clarifier is disclosed wherein the improvement lies in removing the lime mud from the clarifier at a predetermined rate.
REFERENCES:
patent: 4131508 (1978-12-01), Laakso
patent: 4236960 (1980-12-01), Hultman et al.
patent: 4668342 (1987-05-01), Blackwell
Champion International Corporation
Chin Peter
Sommer Evelyn M.
LandOfFree
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