EP1948360B1 EP06806404A EP06806404A EP1948360B1 EP 1948360 B1 EP1948360 B1 EP 1948360B1 EP 06806404 A EP06806404 A EP 06806404A EP 06806404 A EP06806404 A EP 06806404A EP 1948360 B1 EP1948360 B1 EP 1948360B1 Authority EP European Patent Office Prior art keywords roller mill grinding classifying mill according …