The invention relates to the technical field of crushing devices, and particularly discloses a
magnesium chip crushing device which comprises a base, a ball-milling
barrel is rotatably mounted on the base, an air blowing
pipe is mounted in the ball-milling
barrel in the axial direction of the ball-milling
barrel and can rotate around the axis of the ball-milling barrel, and air blowing holes are formed in the air blowing
pipe and can convey cooling gas into the ball-milling barrel. A support is fixedly installed on the air blowing
pipe, a separating plate and a collecting cover are fixedly installed on the support, the support is communicated with the outside of the ball milling cylinder, and the air blowing pipe has two relative movement positions. The device has the beneficial effects that the separating plate can separate generated micro-
powder from materials, the micro-
powder is driven by cooling gas to enter the collecting cover and then is discharged, meanwhile, in the falling process of the materials,
convection can be formed between the materials and the rising cooling gas, heat in the materials is taken away, the micro-
powder generated in the working process can be discharged, meanwhile, the materials can be cooled, and the working efficiency is improved. And the explosion risk is effectively reduced.