|About this Abstract
||Part C-2: Gordon Ritcey Symposium: Advances in Hydrometallurgical Solution Purification Separations
||Ion Exchange Removal of Copper Impurity from Silver Nitrate Electrolyte
||Sami Virolainen, Mikhail Maliarik, Olli Holopainen, Tuomo Sainio
|On-Site Speaker (Planned)
An ion exchange process for removal of copper from concentrated silver nitrate electrolyte was designed. Suitable ion exchange resin was chosen based on single-column experiments with synthetic nitrate electrolyte containing ca. 85 g/L silver and 40 g/L copper at pH 3.5. 2-(aminomethyl)pyridine functional chelating resin (CuWRAM) was observed as the best choice among several tested commercial resins. With this resin, a process was designed based on additional experiments and process simulations, which were done utilizing developed mechanical ion exchange model. The process is capable of purifying ca. nine bed volumes of electrolyte under a day. In addition, experimental results indicate that silver losses to the copper eluate are minimal.
||Planned: At-meeting proceedings