Process for de-inking paper pulp and flotation cell used for...

Details Process for de-inking paper pulp and flotation cell used for... Process for de-inking paper pulp and flotation cell used for...

2007-10-16

2007-10-16

Lithgow, Thomas M. (Department: 1724)

Classifying, separating, and assorting solids

Fluid suspension

Liquid

C162S004000

Reexamination Certificate

active

10845776

ABSTRACT:
The cell includes an enclosure having, at the top, a main inlet for the pulp to be de-inked and, at the bottom, a main outlet for the de-inked pulp. The pulp from the top to the bottom, passes through successive stages provided with bubble passageways introduced into the lower portion of the enclosure, and the bubbles rise to the top, to form a foam. The cell includes pulp a guiding mechanism forming a guiding path and in which the bubble passageways are provided for. The guiding mechanisms are, on their lower face, inclined upwards in order to guide the bubbles towards the bubble passageways.

REFERENCES:
patent: 5330655 (1994-07-01), Schweiss et al.
patent: 5650044 (1997-07-01), Serres
patent: 6197153 (2001-03-01), Serres

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