Disclosed is a nano pulverizing device for processing reconstituted rice flour which includes a bottom plate, support legs are fixedly connected to corners of a lower surface of the bottom plate, a housing is arranged on an upper surface of the bottom plate, and a rotating motor is arranged on the lower surface of the bottom plate. The rotating motor penetrates through the lower surface of the bottom plate and extends to the upper surface of the bottom plate, and a crushing device is rotationally connected to one end, extending to the upper surface of the bottom plate, of the rotating motor. A support frame is fixedly connected to an inner wall of the housing, a support plate is fixedly connected to a lower surface of the support frame, and a flexible plate is fixedly connected to a lower surface of the support plate.

The crushing and classifying device of the present disclosure includes a crushing chamber into which an electrode material is inserted, a rotating shaft, a striking body, and a screen. The rotating shaft is disposed in the crushing chamber and rotates under a driving force. The striking body has a rod shape or a chain shape, and is rotatably connected at one end to the rotating shaft, and rotates in the crushing chamber by receiving a centrifugal force associated with the rotating of the rotating shaft. The screen is provided on a wall surface of the crushing chamber, and classifies the crushed electrode material. The striking body includes, at least at its distal end, an edge portion rounded to have a radius of curvature greater than or equal to 1 mm and less than or equal to 9 mm. The screen has an opening that is equal to or less than 5 mm.

The crushing and classifying device of the present disclosure includes a crushing chamber into which an electrode material is inserted, a rotating shaft, a striking body, and a screen. The rotating shaft is disposed in the crushing chamber and rotates under a driving force. The striking body has a rod shape or a chain shape, and is rotatably connected at one end to the rotating shaft, and rotates in the crushing chamber by receiving a centrifugal force associated with the rotating of the rotating shaft. The screen is provided on a wall surface of the crushing chamber, and classifies the crushed electrode material. The striking body includes, at least at its distal end, an edge portion rounded to have a radius of curvature greater than or equal to 1 mm and less than or equal to 9 mm. The screen has an opening that is equal to or less than 5 mm.