Patent ID: 8210458

Claim:
A recirculating grinding mill, comprising: at least two rolling presses for comminuting material to be ground, at least two first classifiers for classifying a coarse-grain fraction, at least one second classifier for classifying a fine-grain fraction and a medium-grain fraction from the fractions classified in the at least two first classifiers, the rolling presses, first classifiers and at least one second classifier bring arranged such that feedstock fed into the recirculating grinding mill passes the at least two rolling presses and the at least two first classifiers and then the at least one second classifier with the medium-grain fraction and the coarse fraction being fed again to the rolling presses, and the at least two first classifiers being arranged underneath the at least two rolling presses, wherein transport of the fractions classified in the at least two first classifiers is provided through at least two risers, the at least two rolling presses being arranged between the at least two risers.