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US 4,503,015 AGranted
Method of removing arsenic from a copper electrolyte
AssigneeVereinigte Metallwerke Ranshofen-Berndorf Aktiengesellschaft
InventorsRolf Marr, Hans-J/o/ rg Bart, Reinhard Wachter
Life of this patent
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Abstract
A copper electrowinning electrolyte containing arsenic is extracted to remove arsenic therefrom utilizing trioctylphosphinicoxide as an extracting agent in an organic solvent.
Claims11
A method of removing arsenic from a copper-containing aqueous electrowinning electrolyte containing same, comprising the step of extracting said electrolyte with an extracting medium consisting of 0.1 to 2.6 moles of trioctylphosphinicoxide per kg in an organic solvent.
Dependencies are inferred from the claim text.