Process and facility to remove solid matter from an aqueous fibr

Details Process and facility to remove solid matter from an aqueous fibr Process and facility to remove solid matter from an aqueous fibr

1998-07-16

2000-07-04

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209170, 2102212, 162 4, D21C 502, B03D 102, B03D 114, B03D 124

Patent

active

060825499

ABSTRACT:
A process and apparatus serves to remove solid matter from an aqueous material suspension produced from printed used paper. As many interfering material particles are collected by floatation as possible in a floatation foam and diverted as a reject. A perforated separating element is located above the fibrous material suspension. Between the separating element and the floatation foam, an intermediate layer is formed. In the intermediate layer the fibers, which have been entrained by gas bubbles are again rinsed and retrieved.

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