Removal of iron contaminant from zirconium chloride solution

Details Removal of iron contaminant from zirconium chloride solution Removal of iron contaminant from zirconium chloride solution

1990-10-31

1992-01-07

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

423 70, B01D 1104

Patent

active

050788876

ABSTRACT:
The processing of an aqueous zirconium chloride solution contaminated with iron, typically iron chloride (FeCl.sub.3), for removing the iron is improved by flowing a suitable solvent, such as methyl isobutyl ketone (MIBK) solution, countercurrent to the flow of the zirconium chloride solution at preferably a ratio of about 0.1 to about 0.25 in a solvent extraction column of from ten to fifteen theoretical stages, preferably a pulse column, and by recovering the solvent for recycling free of iron by distillation of the iron-loaded solvent in a packed, steam-stripper, distillation column to save energy and to avoid problems created by tar formation in the conventional solvent extraction system normally used.

REFERENCES:
patent: 3658466 (1972-04-01), Otsuka

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