Crystallization apparatus for metal stripping

Details Crystallization apparatus for metal stripping Crystallization apparatus for metal stripping

B - Operations, Transporting

01

D

23/409

B01D 9/02 (2006.01) B01D 9/00 (2006.01)

Patent

CA 1255073

Abstract of the Disclosure A crystallization apparatus for metal tripping of an inverted frustocone type structure is disclosed, which comprises a zone of mixing and contacting an organic solvent containing extracted metal ions therein with a fluoride series stripping solution to separate (back-extract) the metal ions as a crystal of metal fluoride or fluorinated metal complex into the stripping solution, a zone of cooling the stripping solution containing the deposited crystal of fluoride or metal complex therein to perform crystal growth, and a zone of separating the grown crystal. In this apparatus, the cooling zone is arranged in a lower part of the apparatus and provided at its outside with a heat exchanger, and a downpipe extending downward from the mixing zone is terminated above the cooling zone, and a forced circulation zone for generating cyclonic stream of the stripping solution is disposed in the lowest portion of the cooling zone and provided with at least one blow-off nozzle located in a substantially tangential direction thereof.

477477

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