ACM Ultra Fine Pulverizer combines two major functions of grinding and classification in one machine. When fed into the Pulverizer and conveyed through the Grinding Disc at a centrifugal force of high speed, pulverization of raw materials takes place by the impact of material particles on the Cutters arrayed in an annulus, then airflow will be drawn through the exterior of Diversion Ring to carry over the pulverized materials into the Classifier for classification. Ultra fine powders will pass through the classifying blades and reach the Bag Filter for collection while the rest of coarse powders will return to the Pulverizer for pulverization again. Powders within the concentrated extent for the finenesses distribution of particulate are obtainable by tuning the rpm of classifying blades without stopping the machine. Equipped with a net-less, sift-free auto air Classifier plus a Pulverizer with large air volume supplied, temperature for pulverization can be effectively controlled to make it most suitable for processing those substances that are not resistant to heat. The system is for continuous and hermetic operation so that the leakage of powdered dusts can be avoided as well.