FIELD: technological processes.
SUBSTANCE: invention relates to grinding cones and segments of plates for grinding cones, and to shape of knives that form grinding elements of cones or conical segments. Grinding cone comprises working surface, radial internal end and radial external end, at the same time working surface includes multiple knives separated along sides by intermediate grooves and passing through mentioned conical surface mainly outside to external end, besides specified multiple knives are bent in the shape of logarithmic spiral.
EFFECT: invention makes it possible to increase quality of material grinding and to reduce costs for cleaning of refiner disks.
22 cl, 11 dwg
