Classifying – separating – and assorting solids – Adhesion – With selective differentiation
Patent
1983-07-06
1985-04-16
Nozick, Bernard
Classifying, separating, and assorting solids
Adhesion
With selective differentiation
209 49, 209166, 209168, 209171, 209272, 209307, 208 11LE, 210783, B07B 1300
Patent
active
045114617
ABSTRACT:
A mixture containing oleophilic surfaced mineral particles and oleophobic gangue particles in an aqueous phase is separated by means of an apertured oleophilic endless sieve supported in a separation zone by a revolving cylindrical cage having apertured sidewalls and supported in a recovery zone by a support roller, each section of sieve surface alternately revolves through the separation zone and recovery zone. The aqueous mixture is introduced as a slurry into the rotating cage. The endless sieve partly covers the outside surface of the cylindrical cage sidewall. An oleophilic adhesive is placed on the sieve as a coating or added to the aqueous slurry in the cage or both. The mixture tumbles inside of the cage and passes through the cage sidewall apertures to the sieve surface. The oleophilic mineral particles of the mixture adhere to the oleophilic adhesive and are captured by the sieve upon contact and conveyed out of the separation zone into the recovery zone.
In the recovery zone, mineral particles and adhesive mixture are heated and removed from the sieve by squeezing the mixture on the sieve between two rollers at least one of which is oleophilic. Alternately, the mineral particles and adhesive mixture on the sieve may because of its apertured surface, be blown off, shaken off or thrown off the sieve under the influence of an applied force.
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patent: 1159713 (1915-11-01), Rowand
patent: 1263503 (1918-04-01), Wood
patent: 1478703 (1923-12-01), Dolbear
patent: 2189698 (1940-02-01), Bierbrauer
patent: 2291447 (1942-07-01), Bierbrauer
patent: 4224138 (1980-09-01), Kruyer
patent: 4236995 (1980-12-01), Kruyer
patent: 4248697 (1981-02-01), Halvorsen
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