FIELD: grinding materials. SUBSTANCE: spreading disk of centrifugal jet-type mill includes central member connected with rim made in form of truncated cone. Connecting member is made solid over outer and inner surfaces; it occupies entire space between central member and rim; body of connecting member is provided with passages which are round in section. Inlet and outlet sections of each passage have cup-shaped recesses; these recesses are directed towards rotation on inlet section and those located on outlet section are directed towards spreading surface of disk. Profile of each passage has form of diffuser widening from inlet to outlet section. EFFECT: enhanced efficiency. 2 cl, 2 dwg
