Reverse centrifugal cleaning of paper making stock

Details Reverse centrifugal cleaning of paper making stock Reverse centrifugal cleaning of paper making stock

1977-11-28

1979-05-22

Hill, Ralph J.

Classifying, separating, and assorting solids

Magnetic

Paramagnetic

162 4, D21D 524, B04C 500

Patent

active

041558391

ABSTRACT:
A system and method for separating paper fibers from contaminants of lower specific gravities employ a reverse centrifugal cleaner wherein the inlet port is of substantially greater flow area than previously used or proposed for either normal or reverse centrifugal cleaning, each of the apex and base ports are of greater flow area than the inlet port, and the discharge flows are controlled to provide an accepts flow through the apex port which is less than the reject flow through the base port. The system provides substantial advantages over prior practice, particularly in the areas of both capital and operating costs, capacity, and cleaning efficiency in terms of the energy requirements for given tonnage of accepted fiber.

REFERENCES:
patent: 2377524 (1945-06-01), Samson et al.
patent: 2975896 (1961-03-01), Hirsch
patent: 3405803 (1968-10-01), Bahr et al.
patent: 3861532 (1975-01-01), Skardal
patent: 3912579 (1975-10-01), Braun

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