Method of processing waste paper and installation for the perfor

Details Method of processing waste paper and installation for the perfor Method of processing waste paper and installation for the perfor

1980-10-15

1983-08-09

Smith, William F.

Paper making and fiber liberation

Apparatus

With beating, refining, and/or disintegrating means

162 4, 209 3, 209 17, D21B 132

Patent

active

043977138

ABSTRACT:
A method of preparing waste paper wherein the waste paper is defiberized in water within a stock slusher or pulper. Following the stock pulper there is removed from the stock suspension all of the already available good stock fibres by means of a sieve or screen device. The remainder of the stock suspension is then subjected to a comminution action and is again screened. The screening and comminution can take place in a first fiberizer or secondary pulper having a finer sieve or screen than a conventional secondary pulper. The overflow of the first secondary pulper is infed to a second secondary pulper and the overflow thereof is then fed to a dynamic jarrer or vibrator. Forwardly of the dynamic jarrer there is arranged a vat containing a circulation system of a despeckling device.

REFERENCES:
patent: 4219381 (1980-08-01), Schnell
patent: 4231526 (1980-11-01), Ortner et al.

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