Process for separating antimony from acidic solutions containing same with an organic diluent containing a polyol
AssigneeNuova Samim S.p.A.
InventorsRenato Guerriero, Italo Vittadini
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Abstract
There is disclosed a method for the separation of antimony from acidic solutions which contain antimony, alone, or together with other metallic ions, by extracting antimony with an organic, water-immiscible, polyol-containing diluent. The method comprises the steps of contacting the antimony-containing acidic solution with a water-immiscible organic diluent containing at least one polyol dissolved therein, preferably a diol, said polyol serving to extract the antimony. The polyol serves to selectively extract the antimony from the acidic solution to the exclusion of other metallic ions such as copper and nickel.
Claims18
Process for the separation of antimony from acidic aqueous solutions containing antimony, alone or together with other metals, characterized in that the acidic aqueous solution is contacted with a water-immiscible organic diluent, consisting of hydrocarbons, alcohols and their mixtures, and containing dissolved therein at least one polyol, said polyol extracting the antimony, which is subsequently re-extracted with a counter-solvent.
A process for the separation of antimony from acidic aqueous solutions containing antimony, alone, or together with other metals, said process comprising:
- (a) contacting the antimony-containing solution with a water-immiscible organic diluent containing an extractant comprised of at least one polyol.
In a process for the separation of antimony from an acidic solution containing antimony, alone, or in combination with other metals, the improvement comprising using as an extractant a polyol.
Dependencies are inferred from the claim text.