Separation of pulp flow

Details Separation of pulp flow Separation of pulp flow

1980-12-15

1982-06-08

Hill, Ralph J.

Classifying, separating, and assorting solids

Plural, diverse separating operations

Aqueous suspension and sifting

209211, 209250, D21D 516, D21D 524

Patent

active

043335721

ABSTRACT:
The method is intended for separating a flow of pulp containing impurities of coarse particles, partly light and partly heavy particles, by means of a main sieve or the like, into at least one pulp flow and one coarse reject flow. The coarse reject flow is separated by a hydrocyclone separator of a known type into a pulp flow, a light reject flow and a heavy reject flow. Advantageously, the light reject flow is separated by a bow sieve into a flow enriched in light particles and a flow enriched in fibers and which may be returned to the main sieve.

REFERENCES:
patent: 3425545 (1969-02-01), Zemanek et al.
patent: 3499528 (1970-03-01), Salomon
patent: 3805401 (1974-04-01), Fontein
patent: 4134827 (1979-01-01), Frykhult

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