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US 4,392,962 AGranted
Process for separating metals from aqueous solutions
AssigneeHoechst Aktiengesellschaft
InventorsKlaus Lehr, Gero Heymer, Christian May, Hermann Klein
Life of this patent
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Abstract
The invention relates to a process for separating seminoble and/or noble metals from an aqueous solution having compounds of these metals dissolved therein by subjecting the solution to reaction with red phosphorus. More particularly, the solution is conveyed through a zone containing a layer of granular red phosphorus particles with a size of 0.01 to 10 mm, which may be used in admixture with active carbon.
Claims9
A process for separating a seminoble or noble metal, from an aqueous solution having a compound of a said metal dissolved therein, which comprises:
- passing said solution through a column subdivided into a plurality of zones, a lower zone containing a layer of active carbon particles having a size of 0.01 to 10 mm and an upper zone containing a layer of granular red phosphorus having a size of 0.01 to 10 mm.
Dependencies are inferred from the claim text.