Grinding tool (10; 20) for screwing to a tool carrier ring of a rotor of an eddy current mill surrounded by a conical or cylindrical grinding track, with a carrier body, by means of which the grinding tool (10; 20) can be fastened without any degree of freedom to a tool carrier ring provided on the rotor, and with a in the state fastened to the tool carrier ring approximately in the direction of rotor rotation (R) facing, for smashing incident particles serving refractive surface (3; 23), which opens on its side facing the grinding path in a breaking edge (1; 21), via which a top surface (5 25) adjoins the crushing surface (3; 23), which points outwards towards the grinding path in the state of the grinding tool (10; 20) fastened to the tool carrier ring, and is inclined to the rotor axis corresponding to the cone angle of the grinding path, characterized in that the grinding tool (10; 20) consists of the carrier body, which in turn consists of a single, hard and wear-resistant stem material consists, in particular a full ceramic, such. Silicon carbide or aluminum oxide, a hard metal or a highly tempered steel, wherein the top surface (5; 25) and the crushing surface (3; 23) are formed as side surfaces of the carrier body, which of the refractive surface (3; 23), the top surface (5 25) and complementary surfaces (2, 6, 9, 12a, 22, 26, 29, 12b) is bounded into a compact, monolithic block and except for a number of holes (4) for a corresponding number of screws (11) for screwing consists of solid material on the tool carrier ring.
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