To perform the powder separation of a 200 mesh size simply at a stroke by a method in which a circular container is attached to a hydraulic device belonging to the engine of a heavy machine or a vehicle, minerals and a gate balls are charged into a container in which caster table machines are spread in the circular container, an engine is started by using freely rotatable movability, minerals are crushed by the rotary shaft by the hydraulic apparatus, and the minerals about 300mm are by changing the number of revolution.

A circular container 5 is fixed to the vehicle base of a heavy vehicle etc., and the heavy vehicle etc., having hydraulic pressure attached to an engine 2 to be able to be connected, a pump 4 which rotates the rotation of the engine 2 by hydraulic pressure is installed, and a rotary shaft 7 is set to the container 5. Agate balls and minerals are rotated in the inside in which spreading stones are spread in the container 5, the agate balls and the minerals fall in upward ascending rotational radius, and minerals about 300mm in size are crushed at a stroke into a 200 mesh size.