Study Pressure-Cyanide Dissolution Different of Metal Palladium and Platinum Powder

Abstract:

s: A research study has been undertaken to develop the fundamentals of a method for the direct dissolution of platinum group metals (PGMs). At room temperature and pressures, the reaction between sodium cyanide and platinum group metals (PGMs) does not occur because of poor kinetics. However, at elevated temperatures between 120-180 °C, PGMs can be leached by sodium cyanide like the reaction of gold. In this work, the dissolution of Palladium and Platinum powder were measured in pressure clear cyanide solution. The cyanide leaching reaction mechanism is also discussed.The data at different cyanide concentrations, different temperature and different oxygen pressure are obtained. The dissolution rate off metal Palladium and Platinum powder were found to be a function of the cyanide and oxygen level.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 2514-2518
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.2514
• Online since: August 2013
• Authors: Li Yan*, Ji Shou Zhao
• Keywords: Dissolution, Metal Palladium Powder, Platinum Group Metals, Pressure Cyanidation

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DOI: 10.1016/j.jelechem.2007.07.002