Method and installation for breaking up slagsand

摘要

The invention relates to a method and an installation for breaking up brittle material, in particular sand-like material for grinding such as foundry sand, in the roller slit of a choke-feed roller mill. In order to provide an optimum feed capacity of the material for grinding in the roller slit, the material for grinding is set at the inlet to the roller slit to a (mixing) moisture content of approximately 0.3 to 3.0%, preferably of approximately 0.5 to 2.0%. <IMAGE>