Apparatus for pulping paper making stock at high consistencies

Details Apparatus for pulping paper making stock at high consistencies Apparatus for pulping paper making stock at high consistencies

1984-12-07

1986-06-10

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 4617, 241246, 241257R, B02C 1318

Patent

active

045938610

ABSTRACT:
Apparatus for pulping paper making stock at high consistencies, e.g. 10 percent to 25 percent solids, includes a cylindrical tub and a rotor constructed and arranged to apply primarily pumping force to the stock which causes it to travel outwardly to and upwardly along the tub wall. This climbing stock is continuously subdivided and directed back into the tub, and a feed screw extending vertically upward from the rotor assures continuous circulation which develops zones of intense hydraulic sheer constituting the major force for effecting the desired defibering.

REFERENCES:
patent: 2648964 (1953-08-01), Graham
patent: 2659226 (1953-11-01), Pellerin
patent: 4048820 (1977-09-01), Pielemeier
patent: 4535943 (1985-08-01), Conture
patent: 4538765 (1985-09-01), Mayr et al.

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