Recovery of platinum group metals from spent automotive ...
2021-7-1 · The common extraction process refers to pyrometallurgy combined with hydrometallurgy, where platinum group metal ores (e.g. Merensky Reef ore grades contain 3–8 g/t PGM, associated with nickel, copper, as sulfides) are mined, grinded, subjected to gravity separation and flotation; then, the PGM concentrate (typically 200 to over 2000 g/t PGM ...