Patent ID: 9643191
Date: 2017-05-09
CPC Classifications: B02C

Claim:
1. A vertical mill for grinding material to be ground, comprising a grinding table and a plurality of grinding rolls or grinding rollers arranged so as to rotate thereon, a ring duct surrounding the grinding table to introduce an ascending transport and/or drying gas flow, an oversize material cone, arranged centrally relative to the grinding table, approximately above the grinding rolls or grinding rollers and tapering downwards, for the recirculation of coarse oversize particles onto the grinding table, and an approximately annular gap distance between the lower outlet region of the oversize material cone and the upper region of the grinding rolls or grinding rollers, wherein a feed unit for a gas flow with outward flow direction is provided in the lower region of the oversize material cone to deflect fine particles fed to the annular gap distance into the ascending transport and/or drying gas flow.