Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2005-05-10
2008-07-29
Mackey, Patrick (Department: 3653)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C209S725000, C209S726000, C209S728000, C209S208000
Reexamination Certificate
active
07404492
ABSTRACT:
A hydrocyclone unit for separating a fibre pulp suspension containing relatively heavy contaminants has an elongate tapering separation chamber, an inlet member that feeds the suspension tangentially into the separation chamber at a base end, so as to form a vortex in the separation chamber, a reject fraction outlet at the apex end of the separation chamber for discharging a reject fraction containing heavy contaminants, and a central accept fraction outlet at the base end for discharging a central fraction containing fibres. A fluid injection member is adapted to inject a fluid tangentially into the separation chamber at a distance from the apex end which is at least 40% of the length of the separation chamber, such that the injected fluid increases the rotational speed of a portion of the vortex in the chamber to increase the separation efficiency with respect to fibres existing in the vortex portion.
REFERENCES:
patent: 2648433 (1953-08-01), Fitch et al.
patent: 2816490 (1957-12-01), Boadway et al.
patent: 3052361 (1962-09-01), Whatley et al.
patent: 3417871 (1968-12-01), Arnold
patent: 3687286 (1972-08-01), Weiss
patent: 3928186 (1975-12-01), Zemanek
patent: 4224143 (1980-09-01), Liller
patent: 4755295 (1988-07-01), Donhauser et al.
patent: 6223904 (2001-05-01), Stephan et al.
patent: 6238579 (2001-05-01), Paxton et al.
patent: 6284096 (2001-09-01), Hartmann
patent: 2002/0011318 (2002-01-01), Jong
patent: 2003/0201213 (2003-10-01), Bolles et al.
patent: 2006/0163153 (2006-07-01), Caldelman
patent: 2006/0243646 (2006-11-01), Kucher et al.
patent: 357680 (1973-07-01), None
Backman Jan
Kucher Valentina
GLV Finance Hungary KFT
Mackey Patrick
Matthews Terrell H
LandOfFree
Separation of fibre pulp suspensions containing relatively... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Separation of fibre pulp suspensions containing relatively..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of fibre pulp suspensions containing relatively... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3970209