Method for comminuting ceramic catalyst bodies, in particular from motor vehicle exhaust systems

摘要

In order to make the noble metals contained in the catalyst accessible for chemical recovery, the ceramic catalyst bodies are subjected to comminution in two stages: The ceramic bodies are subjected to a beating comminution operation in a hammer mill to produce a granular material, and to a screening operation. In a second stage, the ceramic granular material is subjected to impact comminution on a grinding track in a centrifugal mill. The ceramic particles produced are subjected to re-comminution and sorting on a screen track.