Patent ID: 8480016

Claim:
A device for mixing, grinding, drying, deagglomeration, crushing, or coating of feedstock, the device comprising: a housing; a rotor mounted on a drive shaft that is configured to rotate around an axis within the housing, the rotor having at least one disc-shaped rotor elements arranged coaxially with respect to each other and a rotation axis, the rotor elements being subdivided in a radial direction into an inner area thereby forming a bearing body that is connected rotationally fixed to the drive shaft; a stator configured to be fixed relative to the housing, the stator encompassing the rotor such that a radial working gap is formed; and rotor tools that form an outer area, the rotor tools being held by the bearing body and act together with the stator tools on an inner circumference of the stator, wherein the feedstock is supplied in a carrier gas stream to the radial working gap, wherein, to form the rotor tools, a plurality of indentations are disposed on the outer circumference of the rotor elements of the rotor, the individual outer circumferences of the rotor elements together forming a shell of the rotor, wherein areas between two adjacent indentations form webs, which form active edges of the rotor tools for processing of the feedstock, wherein the inner area of each rotor element forming the bearing body and the outer area of each rotor element formed from the rotor tools are formed monolithic as different areas of a single workpiece, wherein the rotor has at least one annular web, lying on a circumferential ring, as a retarding element, and wherein the annular web is formed in each case by a retarding disc disposed coaxially between the rotor elements.