Processing of groundwood pulp to remove coarse particulate...

Details Processing of groundwood pulp to remove coarse particulate... Processing of groundwood pulp to remove coarse particulate...

D - Textiles, Paper

21

D

92/41

D21D 5/00 (2006.01) D21B 1/14 (2006.01) D21D 1/00 (2006.01)

Patent

CA 1156864

016-248 PROCESSING OF GROUNDWOOD PULP TO REMOTE COARSE PARTICULATE LIGNOCELLULOSIC MATERIAL AND APPARATUS ABSTRACT OF THE DISCLOSURE Coarse wood residues, slivers and shives present in groundwood pulp as obtained in grinders are removed by passing a uniform flow of the pulp suspension containing coarse wood residues and shives from the grinder to a conical crushing and beating apparatus having two treatment zones with a stationary part and a rotary part for reducing all wood material present in the suspension to free fibers, while measuring and controlling the freeness of the pulp within selected limits by controlling both the power input to the crushing and beating apparatus and the degree of beating of the pulp, obtaining groundwood pulp having a low shives content and superior strength properties, at a low energy consumption.

373782

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