Wiener W1S Laboratory Ball Mill - AMP-Rose- ball mill capacity amp amp dimensions ,Wiener W1S laboratory ball mill chocolate grinding machine, with manually adjustable agitator speed. Temperature controlled with a screw pump, it re-circulates the chocolate through the ball mill …Closed circuit systems for ball mills | Industrial ...Closed circuit systems for ball mills The closed-circuit grinding system, all ground materials are led into a separator and classified into refined powder (products) and coarse powder (return powder).