B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 61/00 (2006.01) B01J 39/00 (2006.01) C01C 1/28 (2006.01) C01G 39/00 (2006.01) C22B 9/02 (2006.01) C22B 34/34 (2006.01)
Patent
CA 2480755
Process for reducing the content of alkali metal impurities, in particular of potassium, in ammonium metallate solutions, the ammonium metallate solution being subjected to a membrane filtration, and preferably the permeate forming in the membrane filtration being treated with a cation exchanger for removing alkali metal impurities enriched in said permeate and, after this treatment, being combined with the retentate of the membrane filtration.
Erb Michael
Gille Gerhard
Meese-Marktscheffel Juliane
Olbrich Armin
Stoller Viktor
Fetherstonhaugh & Co.
H.c. Starck Gmbh
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