Patent ID: 9216416
Filing Date: 2015-12-22
Classification: B02C

Abstract:
1. A mineral material processing apparatus comprising an outer wear part and an inner wear part that form a crushing chamber therebetween and which inner wear part is arranged to be moved along an eccentric rotation movement in relation to the outer wear part, wherein the inner wear part comprises an outer wear surface which comprises a working life initial phase wear surface to be put in crushing contact with an opposite wear surface of the outer wear part, and a working life end phase wear surface to be brought vertically into use as part of the crushing chamber in the crushing process from under the working life initial wear surface when the wear is progressing, wherein the working life end phase wear surface includes a protrusion configured to be located outside of the crushing chamber during an initial phase of the working life and to form part of the crushing chamber when the wear of the outer wear surface is progressing.