Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1996-05-21
1998-06-09
Lamb, Brenda Adel
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
241 21, 241 24, D21B 132
Patent
active
057627568
ABSTRACT:
Methods and apparatus for recycling office waste paper and the like of the type having ink and laser print particles coated thereon. The waste paper is simultaneously pulped and ink particles dispersed by kneading the waste paper in the form of a high solids content aqueous mixture or sludge. After the simultaneous pulping and dispersing, no additional dispersion step is needed to form deinked paper stock The high solids content aqueous mixture or sludge is diluted and forwarded to wet deinking separation devices such as a froth flotation unit or the like. The thus treated pulp is washed and results in the formation of a high quality pulp stock ready for bleaching and/or paper making procedures.
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Gilkey et al, "Cold Dispersion Unit Boosts Deinking Efficiency at Japanese Tissue Mills", Paper Recycling: Strategies, Economics and Technology, Miller Freeman (San Francisco, Ca.) pp. 159-162.
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Ergebnisse mit Hochkonsistenz-Stofflosern, 36 Jahrgang Hef 3 1982 with English Translation.
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Fondow William J.
Grantz David C.
Kelly Albert F.
Scott Don L.
Seifert Peter
Lamb Brenda Adel
The Black Clawson Company
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