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- W2025291212 abstract "Abstract Selenium, tellurium, silver and gold are recovered from the anode slimes of copper electrorefining. Silver-copper selenide-telluride phases must be previously oxidized to obtain selectively leachable compounds. Arsenic and antimony, present in anode slimes as AsSb oxidized compounds, may be selectively and almost completely dissolved in 0.4 M KOH at 80δC. After this extraction, alkaline roasting of anode slimes in the presence of K 2 CO 3 at 600°C solubilizes Se (99%) and less than 2% As and 0.1% of Sb. After Se leaching, Cu and Te can be dissolved in 1.2 M HCl at 25°C as well as in CuSO 4 H 2 SO 4 solution. The residue contains BaSO 4 , PbSO 4 , SiO 2 , Au, Ag and small amounts of Se, Cu and Te and can be smelted in order to obtain a bullion for Ag and Au recovery by the conventional electrorefining process." @default.
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- W2025291212 date "1996-06-01" @default.
- W2025291212 modified "2023-09-25" @default.
- W2025291212 title "Selective leaching of arsenic and antimony contained in the anode slimes from copper refining" @default.
- W2025291212 cites W1966506903 @default.
- W2025291212 doi "https://doi.org/10.1016/0304-386x(95)00061-k" @default.
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