| A low-grade platinum palladium tailing from south Africa consists of 1.1 g/t of Pt, 0.5 g/t of Pd and 17.96% of Cr2O3. Adopting the process of “pre-enrichment by strong magnetic separation - efficient enrichment by fine grinding flotation” and using SH as the inhibitor, copper sulfate as an activator, SAC + butyl xanthate as a high-efficiency platinum palladium collector, the obtained platinum-palladium concentrate has 65.9 g/t of Pt, 24.0 g/t of Pd, and the recovery rates of Pt and Pd are 60.93% and 48.72%, respectively. The Cr2O3 grade in the chromite concentrate is 39.19%, and its recovery rate is 70.19%. The comprehensive recovery goal of platinum, palladium and chromite in platinum palladium tailings is achieved. |
