Patent ID: 8240589

Claim:
A method for crushing agglomerated hot bulk material comprising the steps: providing at least two parallel crushing rolls in the form of supporting tubes, sliding a plurality of individually slidable and interchangeable crushing rings on each supporting tube, and rotationally fixing each of said rings on said tubes, each of said crushing rings including crushing elements provided at its outer surface, the outer surfaces of each of the crushing rings being cylindrical, and the crushing elements projecting from the cylindrical outer surface of the crushing rings and being uniformly distributed over both a circumference and a width of the crushing rings, and rotating said at least two parallel crushing rolls in opposite directions to draw the hot bulk material into a nip formed between said at least two parallel crushing rolls and breaking up and crushing the agglomerated hot bulk material by the crushing elements carried on the at least two parallel crushing rolls so as to achieve broken up hot bulk material and a uniform grain size distribution in the broken up hot bulk material.