Redox extractions from molten alkali-metal cyanides. Part 2. Mechanism for extractions with liquid tin alloys
Abstract
Cyanide is the reductant during the extraction of metal ions from molten cyanide solutions with liquid tin alloys. Infrared studies revealed that molten cyanide is oxidised to dicyanamide, and that the redox potential of a cyanide melt is determined by the dicyanamide ⇌ cyanamide equilibrium; the latter is the reduction product of dicyanamide.