Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1984-10-24
1986-08-05
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210676, B01J 4710
Patent
active
046042091
ABSTRACT:
In a continuous liquid-solid contacting process with intermittent counter-current movement of particles between horizontally adjacent vessels, particle movement is effected by flowing liquid upwardly from a lower region of one vessel through a particle collection conduit into a lower region of an adjacent vessel. The sides of the vessel converge downwardly adjacent the inlet end of the conduit to a collection zone from which the particles can be transferred efficiently. A novel form of vessel for use in apparatus for carrying out the process is also disclosed.
REFERENCES:
patent: 3879287 (1975-04-01), Porter
patent: 3957635 (1976-05-01), Cloete et al.
patent: 4035292 (1977-07-01), Himsley
patent: 4088563 (1978-05-01), Marquardt
patent: 4279755 (1981-07-01), Himsley
Vernon, P. N. et al., "The Rossing Continuous Ion Exchange Plant", Symposium on Ion Exchange and Solvent Extraction, Johannesburg, South Africa, Feb. 1980.
"Rossing Uranium", Mining Magazine, Nov. 1979, pp. 478-479.
"Kerr McGee Nuclear" brochure, Kermac/Kerr McGee, Distributed at least as early as 1980.
Hollis, R. F. et al, "The Resin-in-Pulp Method for Recovery of Uranium", Mining Engineering, Apr. 1957, pp. 443-449.
Merritt, R. C., "The Extractive Metallurgy of Uranium", United States Atomic Energy Commission, 1971, pp. 402, 403, 418, 419, 499 and 503.
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