Solid material comminution or disintegration – Processes – With application of fluid or lubricant material
Patent
1987-04-15
1989-09-05
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
With application of fluid or lubricant material
241 24, 241 4617, 241 69, B02C 2336
Patent
active
048631078
ABSTRACT:
For removing foreign solids, for instance contaminants, from pulpers in which waste paper, in particular with a share of more than five percent, for instance more than ten percent, of solids foreign to paper, is pulped or suspended and the suspension or slurry is the withdrawn through a screen zone for further processing, it is proposed according to the invention to at least partially withdraw the suspension or slurry from the pulper in periodic time intervals and, subsequent to the, in particular each, partial withdrawal of the suspension or slurry, to loosen, hydrodynamically or by means of fluids, the foreign solids accumulated on one side, in particular the upper side, of the screen zone, whereupon the dirt slurry obtained by hydrodynamical loosening is fully mechanically discharged from the pulper prior to newly charging the pulper. The hydrodynamical loosening of the foreign solids is preferably effected under backflushing through the screen zone. Liquid for hydrodynamical loosening is withdrawn from the hydrodynamically loosened slurry in at least one step, in particular through a filter, preferably through a rotary screen. The withdrawn liquid for hydrodynamical loosening is conveniently recycled. A device for carrying out the process according to the invention is conventiently provided with a hydrodynamical loosening means for hydrodynamically loosening foreign matter accumulated on one side of the screen zone and with a fully mechanical discharge means for the dirt slurry so obtained.
REFERENCES:
patent: 4369093 (1983-01-01), Lamort
patent: 4420117 (1983-12-01), Peroutka et al.
patent: 4538765 (1985-09-01), Mayr et al.
patent: 4582261 (1986-04-01), Perry
patent: 4634059 (1987-01-01), Bahr et al.
Harzl Erich
Maier Karl
Namdar Sirous
Maschinenfabrik Andritz Actiengesellschaft
Rosenbaum Mark
LandOfFree
Process and a device for removing foreign solids from pulpers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and a device for removing foreign solids from pulpers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and a device for removing foreign solids from pulpers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-236722