Recovery of precious metal(s) from catalyst - comprises coating ceramic oxide on metal foil which is detachable

摘要

Precious metals, partic. Pt, Rh, or Pd, applied as catalyst to metal foil supports coated with ceramic oxides, etc. in motor vehicle catalysers, are recovered by a method in which the supports are finely comminuted mechanically, so that the ceramic oxide coating is almost completely detached, as dust, and can be sepd. from the metal. The precious metal is then sepd. by a wet chemical or pyrometallurgical process. ADVANTAGE - Economic recovery process.