|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Thermodynamic Analysis of Smelting of Spent Catalysts for Recovery of Platinum Group Metals
||Zhiwei Peng, Zhizhong Li, Xiaolong Lin, Yutian Ma, Yan Zhang, Yuanbo Zhang, Guanghui Li, Tao Jiang
|On-Site Speaker (Planned)
Pyrometallurgical processes for recovering platinum group metals (PGMs) from spent catalyst have been the focus of current research for many years. They are suffered from high energy consumption, large trapping agent consumption and huge amount of slag. Because of versatility of spent catalyst carriers containing PGMs, comprehensive recovery of various catalysts from an experimental point of view remains a challenge. In this study, thermodynamical analysis of pyrometallurgical smelting process in the presence of various additives for efficient recovery of PGMs was performed. It showed that addition of alkali metal salts would promote the migration and separation of the precious metals from the carrier of spent catalysts. By replacing quicklime with sodium salts, the smelting temperature could be reduced by more than 200 °C, which agreed well with the experimental findings.