Patent ID: 11931745
Assignee: METSO OUTOTEC USA INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 5:
6. A grinding assembly for comminution of material, comprising parallel first and second grinding rolls arranged to rotate in opposite directions, towards each other, and separated by a gap, wherein each of the first and second grinding rolls comprises:
a roll body having a cylindrical outer surface extending axially between a pair of opposite ends;
a side groove formed at each end of the roll body, the side groove including a support shoulder recessed from the cylindrical outer surface and/or from surfaces of the opposite ends of the roll body;
an edge ring including a plurality of spaced receiving cavities; and
a plurality of wear members each wear member being received and retained in at least one of the receiving cavities of the edge ring, wherein the wear members are positioned along the edge ring to define an edge of the grinding roll, wherein the edge ring is received within each side groove,
wherein the first grinding roll comprises a flange ring at each opposite end, said flanges each having an outer edge that extends radially past the cylindrical outer surface of the roll body, and
wherein the plurality of wear members of each of the first and second grinding rolls is arranged to provide a wear protecting surface which is angled in relation to the cylindrical outer surface of the respective roll body, and
wherein the wear protecting surface provided by the wear members of the first grinding roll slopes downwards in a direction towards a center of the roll body and wherein the wear protecting surface provided by the wear members of the second grinding roll slopes radially downwards in a direction towards the end of the roll body.