Apparatus for defiberizing, screening and pumping cellulose pulp

Details Apparatus for defiberizing, screening and pumping cellulose pulp Apparatus for defiberizing, screening and pumping cellulose pulp

1984-07-03

1986-10-28

Bashore, S. Leon

Paper making and fiber liberation

Apparatus

With beating, refining, and/or disintegrating means

162 4, 162 28, 241 4611, 241 74, 415121B, 415121G, D21B 132

Patent

active

046197362

ABSTRACT:
Cellulose pulp or recycled paper is defiberized, screened and pumped. Initial defiberizing, separation of non-disintegrated material, final defiberizing and pumping of the defiberized pulp are performed at a consistency of 6 to 18%, preferably 8 to 12%. Preferably all operations are performed at the same consistency. A defiberizing rotor is disposed in front of an impeller in the inlet of a centrifugal pump. A screen plate is mounted close to the defiberizing rotor. Defiberizing elements are arranged on the other side of the screen plate to move close to the screen surface.

REFERENCES:
patent: 3627280 (1971-12-01), Fridman et al.
patent: 3960332 (1976-06-01), Seifert
patent: 4435122 (1984-03-01), Niskanen et al.
patent: 4435193 (1984-03-01), Gullichsen et al.
patent: 4460132 (1984-07-01), Thumm et al.
Wochenblatt fur Papierfabrikation, 1980, pp. 747-748.

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