JPH05285410

PURPOSE:To drastically enhance operation efficiency and to enhance the production capacity of the whole crusher body by constituting a sorting machine of a casing, a takeout hopper of coarse powder and middle powder, a charging chute and a movable damper which is arranged in the boundary part and tiltable in the flow direction of classification air. CONSTITUTION:A sorting machine 39 is equipped with a casing 40, a takeout hopper 15 of coarse powder and a takeout hopper 46 of middle powder respectively described below. The casing 40 is provided with an air introducing port 42 in one side and an air discharge port 43 in the other side so that the flow of classification air 41 flowing in the transverse direction is formed in the inside. The takeout hopper 45 of coarse powder and the takeout hopper 46 of middle powder are provided side by side in order toward an air discharge port 43 side from an air intoroduciton port 42 side in the lower part of the casing 40. A charging chute 50 is provided in the upper part of the casing 40 so that the ground material 5 supplied from a preliminary grinder falls and is supplied on the takeout hopper 45 near to the boundary part 53 of both hoppers 45, 46 while holding the necessary classification space. A movable damper 54 tiltable in the flow direction of a classification air 41 is provided in the boundary part 53.