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Method and device for crushing neodymium iron boron magnetic powder aggregate

A crushing device and crushing method technology, applied in non-rotational vibration suppression, grain processing, etc., can solve the problems of cumbersome crushing process and high labor intensity, and achieve the effect of reducing noise, reducing labor intensity, and high-efficiency crushing

Pending Publication Date: 2018-06-19
CHINA NUCLEAR TIANJIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for crushing NdFeB magnetic powder agg

Method used

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  • Method and device for crushing neodymium iron boron magnetic powder aggregate
  • Method and device for crushing neodymium iron boron magnetic powder aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a crushing device of neodymium iron boron magnetic powder agglomerates of the present invention includes:

[0039] The vibrating mill mechanism 8 is provided with a vibrating cavity 5 containing a vibrating grinding medium 7 in the middle, a feed port 4 communicating with the vibrating cavity 5 is provided at the top, and a feeding port 4 connected to the vibrating cavity 5 is provided at the bottom end Through the discharge port 9;

[0040] The soundproof cover 6 is arranged outside the vibrating mill mechanism 8, and the side wall is provided with a discharge port 3 communicating with the discharge port 9;

[0041] The collecting part includes a bucket 1 and a flexible connection cloth bag 2 used to transfer materials from the discharge port 3 to the bucket 1.

[0042] As a preferred mode, the soundproof cover 6 is provided with a door.

[0043] Way of working:

[0044] When in use, after placing a suitable vibrating mill medium 7 in the vibrating cav...

Embodiment 2

[0052] This embodiment is improved on the basis of embodiment 1, and the filler ratio of the vibrating mill mechanism 8 is 0.6 to 0.8, preferably 0.7.

[0053] Preferably, the vibrating mill medium 7 includes 14 to 18 steel bars with a diameter of 15 mm and 5 to 9 steel bars with a diameter of 25 mm.

[0054] The operating parameters of the vibrating mill 8 with an amplitude of 9 mm and a frequency of 1200 r / min make the particle size of the powder after crushing concentrated between 100 mesh and 500 mesh, so as to meet the requirements for the magnetic powder particle size of the bonded NdFeB magnet pressing.

[0055] During operation, the feeding amount each time should not be too large, and should be less than 10% of the volume of the vibrating cavity of the vibrating mill mechanism to ensure that the vibrator has enough vibration space.

Embodiment 3

[0057] Such as figure 2 As shown, this embodiment is improved on the basis of Embodiment 1 or 2, and a shock absorption mechanism is provided between the vibrating mill mechanism 8 and the fixed surface.

[0058] As a preferred manner, the shock absorbing mechanism is a shock absorbing sand box, which includes a box body and sand contained in the box body. The sand can absorb mechanical shock and play a shock absorbing effect.

[0059] As a preferred manner, the shock-absorbing mechanism is a shock-absorbing pad 10.

[0060] As a preferred manner, the shock-absorbing pad 10 is provided with shock-absorbing cavities 11 arranged vertically in a matrix distribution, and shock-absorbing springs 12 arranged in the same direction are arranged in the shock-absorbing cavity 11.

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Abstract

The invention discloses a method and device for crushing a neodymium iron boron magnetic powder aggregate. The device comprises a vibromill mechanism, a noise enclosure and a material collecting mechanism, wherein the vibromill mechanism is provided with a driven vibration cavity at the middle part, the vibration cavity is internally provided with a vibromill medium, a feed port communicated withthe vibration cavity is formed in the top end of the vibration cavity, a discharge port communicated with the vibration cavity is formed in the bottom end of the vibration cavity, the noise enclosureis arranged at the outer part of a vibromill, a discharge opening communicated with the discharge port is formed in the side wall of the noise enclosure, and the material collecting mechanism comprises a material barrel and a flexible connection cloth bag used for transferring the material to the material barrel from the discharge opening. The device has the advantages of high crushing efficiency,noise reduction and dust prevention.

Description

Technical field [0001] The invention relates to the technical field of aggregate crushing, in particular to a crushing method and crushing device for agglomerates of neodymium iron boron magnetic powder. Background technique [0002] In recent years, due to its excellent magnet uniformity and high plasticity, bonded NdFeB magnets have been widely used in aerospace, automotive, and nuclear industries. Bonded neodymium iron boron magnets are formed by bonding magnetic powder particles together through a binder. In large-scale industrial production, in order to ensure that the surface of the magnetic powder particles is evenly coated with the binder, the solid binder is generally dissolved in the organic Mix the liquid binder and magnetic powder in the solvent or directly in the glue mixer. Agglomerates of small particles with a diameter of centimeters will appear during the stirring and mixing process. Generally, micrometer-sized magnetic powders are required for the forming of bo...

Claims

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Application Information

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IPC IPC(8): B02C17/10B02C17/18B02C17/20B02C19/16F16F15/04
CPCF16F15/04B02C17/10B02C17/18B02C17/183B02C17/20B02C19/16
Inventor 肖凯业许海郭志伟郑文
Owner CHINA NUCLEAR TIANJIN TECH DEV
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