Solid material comminution or disintegration – Processes
Patent
1994-09-06
1996-03-19
Terrell, William E.
Solid material comminution or disintegration
Processes
241 40, 210748, B02C 1900
Patent
active
054997704
ABSTRACT:
The present invention is a system for the comminution of passivating layers on particles to facilitate particle digestion. A vessel comprises a lower portion and an upper portion. The lower portion has an inner surface with an increasing cross sectional area in the upward direction. The upper portion is in fluid communication with the lower portion. The upper portion has an inner surface with a substantially constant cross sectional area. A focused ultrasonic source is positioned so as to sonicate material in the lower portion. At least one fluid inlet is so arranged and constructed relative to the lower portion to introduce fluid into a lower section of the lower portion in a manner so as to cause helical, upward circulation of any particles in the lower portion. A flow re-direction mechanism is positioned in the upper portion so as to stop the helical, upward circulation of the particles and to convert the circulation to an upward, substantially non-circular flow. Thus, the velocity of the particles is reduced, allowing the particles either to fall back down to the lower portion, or to continue upward in the upper portion in accordance with their size. At least one outlet is arranged and constructed relative to the lower portion for providing an exit of the fluid and particles less than a desired threshold size. A particle outlet is provided for adding particles to the vessel.
REFERENCES:
patent: 2829771 (1958-04-01), Dahlstrom
patent: 3255999 (1966-06-01), Weston
patent: 3291640 (1966-12-01), Livingston
patent: 3525606 (1970-07-01), Bodine
patent: 3731877 (1973-05-01), Nebrasov et al.
patent: 4168295 (1979-09-01), Sawyer
patent: 4216095 (1980-08-01), Ruff
patent: 4498819 (1985-02-01), El-Saie
patent: 4529506 (1985-07-01), Smit
patent: 4566800 (1986-01-01), Bodine
patent: 4652309 (1987-03-01), Bodine
patent: 4763677 (1988-08-01), Miller
patent: 4779806 (1988-10-01), Langer et al.
patent: 4780138 (1988-10-01), Bodine
patent: 4879011 (1989-11-01), Schram
patent: 4894134 (1990-01-01), Birken et al.
patent: 5035363 (1991-07-01), Somoza
patent: 5059309 (1991-10-01), Jordan
patent: 5192423 (1993-03-01), Duczmal et al.
patent: 5266215 (1993-11-01), Engelhard
Ginsberg Lawrence N.
Nguyen Tuan
Rockwell International Corp.
Silberberg Charles T.
Terrell William E.
LandOfFree
Apparatus for suspension of particles in an ultrasonic field does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for suspension of particles in an ultrasonic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for suspension of particles in an ultrasonic field will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1954951