A NdFeB permanent magnet waste slag crushing device

Abstract

The invention discloses a crushing device for neodymium iron boron permanent magnet waste residue. A feeding screw rod is in rotatable connection with the interior of a feeding box; the feeding screw rod is driven to rotate by a motor; a rotating shaft of the motor is sleeved with a first bevel gear; the first bevel gear is meshed with a second bevel gear; a vertical rod is sleeved with the second bevel gear; the vertical rod is vertical to the feeding screw rod; a crushing mechanism is arranged under a discharging port of the feeding box; the vertical rod is in rotatable connection with a support plate; the vertical rod is used for driving a left crushing rod and a right crushing rod to rotate by a conveying mechanism; the left crushing rod and the right crushing rod are respectively arranged in a left crushing chamber and a right crushing chamber; the left crushing rod is sleeved with a left crushing blade; the right crushing rod is sleeved with a right crushing blade; a left filter screen and a right filter screen are respectively connected with the interiors of the left crushing chamber and the right crushing chamber; a conveying device is arranged under a crushing box. The crushing device for neodymium iron boron permanent magnet waste residue, disclosed by the invention, can repeatedly crush the materials; the crushing efficiency is high; the crushing effect is stable; the design is smart; the production cost is low.

Description

technical field [0001] The invention relates to the field of rare earth recovery and utilization, in particular to a waste slag crushing device for NdFeB permanent magnets. Background technique [0002] NdFeB magnetic material, as the latest result of the development of rare earth permanent magnet materials, is widely used in the manufacture of permanent magnets. Recycling from NdFeB permanent magnet waste slag is one of the important sources of NdFeB materials. In the prior art, the recovery of NdFeB materials mainly includes multiple steps including roasting, acid dissolution, filtration and extraction. In order to ensure the treatment effect of these treatment processes, it is necessary to crush the waste residue before these processes. The traditional crushing device uses the same crushing parts for crushing whether it is large particle materials or small particle materials. This method is likely to cause passivation of the crushing parts and affect the crushing effici...

AI Technical Summary

Problems solved by technology

The traditional crushing device uses the same crushing parts for crushing whether it is large particle materials or small particle materials. This method is easy to cause passivation of the crushing parts and affect the crushing efficiency.

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