Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent
1989-06-28
1991-09-17
Hajec, Donald T.
Classifying, separating, and assorting solids
Fluid suspension
Gaseous
209147, 209157, 209173, 209474, 209486, 209488, 209492, 209493, 209497, 209502, B03B 546, B03B 562, B03B 1100, B07B 408
Patent
active
050486934
ABSTRACT:
A method and apparatus for sorting articles with small density differences utilizing a flotation stream. A separator is provided in which a flotation stream continuously flows through a trough and is used to effect the separation of a mixture of articles having small density differences into several groups. Each density group of the mixture of articles to be separated is introduced at the head of the flotation stream at a selected depth. In one embodiment, the flotation stream may be comprised of a fluidized bed which is created by forcing a gas upwardly through a fluidization medium such as sand. In another embodiment of the invention, the flotation stream may be formed from a liquid. Once the mixture of articles is introduced at the selected depth into the flotation stream near the head of the stream, since the density of the flotation stream is greater than the density of the articles, the articles of lesser density begin to ascend toward the top of the flotation stream while at the same time the articles are carried downstream by virtue of the velocity of the flotation stream. Articles having a greater density will be carried further downstream whereas articles having less density will ascend to the top of the stream at a point further upstream, thereby effecting a spacial separation of the articles based on their differing densities.
REFERENCES:
patent: 1068163 (1913-07-01), Payne
patent: 1178238 (1916-04-01), Keller
patent: 1634898 (1927-07-01), Delamater
patent: 1801195 (1931-04-01), Fraser
patent: 1837299 (1931-12-01), Taggart
patent: 2007190 (1935-07-01), Fraser
patent: 2093470 (1937-09-01), Morgan
patent: 2101295 (1937-12-01), Rusk
patent: 2154784 (1939-04-01), Stump
patent: 2303367 (1942-12-01), Kendall et al.
patent: 3031081 (1962-04-01), Belk
patent: 3349912 (1967-10-01), Eveson et al.
patent: 3367501 (1968-02-01), Eveson
patent: 3430764 (1969-03-01), Hensley
patent: 3567017 (1971-03-01), Hughes et al.
patent: 3674144 (1972-07-01), Muller et al.
patent: 3702656 (1972-11-01), Gutterman et al.
patent: 3773175 (1973-11-01), Wallace
patent: 3834927 (1974-09-01), Putney
patent: 3842978 (1974-10-01), Summers
patent: 3984306 (1976-10-01), Sayles et al.
patent: 4035288 (1977-07-01), Gibert et al.
patent: 4071304 (1978-01-01), Chauvin et al.
patent: 4082655 (1978-04-01), Toledo
patent: 4225424 (1980-09-01), Patzlaff
patent: 4322287 (1982-03-01), Zaltzman
patent: 4375264 (1983-03-01), Porter
patent: 4466542 (1984-08-01), Oetiker et al.
patent: 4741443 (1988-05-01), Hanrot et al.
patent: 4861464 (1989-08-01), Zaltzman et al.
patent: 4865722 (1989-09-01), Ririe et al.
Zaltzman, A., et al., "Separating Potatoes from Clods and Stones in a Fluidized Bed Medium," Transactions of the ASAE, vol. 26, No. 4, pp. 987-990 and 995 (1983).
Clarke, B., "Cleaning Seeds by Fluidization", Journal of Agricultural Engineering Research 31, pp. 231-242 (1985).
Zaltsman, A., et al., "Analytical Model of a Gravitational Separation Process in a Fluidized Bed Medium," Journal of Agricultural Engineering Research 34, pp. 257-273 (1986).
Hajec Donald T.
Wacyra Edward M.
World Agrosearch, Ltd.
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