Patent ID: 7690591

Claim:
A roller mill comprising: a rotary grinding bowl ( 2 ) having a grinding bowl edge ( 6 ), a grinding area wall ( 3 ) surrounding the rotary grinding bowl, grinding rollers ( 4 ) rolling on the rotary grinding bowl, an annular area ( 5 ) which is bounded by the grinding bowl edge ( 6 ) and the grinding area wall ( 3 ), at least one discharge opening in the annular area ( 5 ) for discharge of comminuted ground material ( 7 ) comminuted between the grinding rollers ( 4 ) and the grinding bowl ( 2 ), an annular chamber ( 11 ) for the supply of a classifying air flow ( 12 ), and an integrated classifying device ( 10 ) located below the grinding bowl edge ( 6 ), wherein the classifying device ( 1 ) receives the comminuted ground material ( 7 ) by gravity from the at least one discharge opening, is connected with the annular chamber ( 11 ), and has at least one fine material outlet ( 14 ) and a coarse material outlet ( 15 ).