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- W1694191369 abstract "Copper cyanide is a common component of cyanide-treatable precious metal ores. Copper level in production heaps can be predicted from laboratory column tests, but the exact correlation is not necessarily intuitive. Generally heap leach operators like to keep copper levels in solution below 300-500 ppm and may note problems with gold recovery and cyanide consumption when copper concentrations exceed this amount. There are several methods of copper removal from cyanide solutions including ionexchange; direct electrowinning; Acidification, Volatilization and Recovery AVR); and sulfide precipitation such as the Sulfidization, Acidification, Recycling, and Thickening process (SART). SART involves acidification with addition of soluble sulfide, separation of the resulting copper sulfide precipitate, and addition of lime to reestablish alkalinity prior to returning the solution to the leaching process, recovering both copper and cyanide as valuable products. In principle SART is very simple. Yet some SART plants which have been built may have been unnecessarily complex. This paper explores the basics of SART and makes the case for a simple plant design as applied to the heap leaching circuit." @default.
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- W1694191369 date "2012-01-01" @default.
- W1694191369 modified "2023-09-26" @default.
- W1694191369 title "SART for copper control in cyanide heap leaching" @default.
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