A rare earth permanent magnet material hydrogen resource recycling device and its application method

A rare earth permanent magnet and application method technology are applied in the fields of a hydrogen crushing device of a NdFeB permanent magnet material and a hydrogen resource recycling device of a rare earth permanent magnet material, which can solve the problem of excessive hydrogen recovery, high maintenance and operation cost, and use effect. Invisible and other problems, to achieve the effect of sensitive control, low maintenance cost and simple structure

Active Publication Date: 2017-03-08
CHINALCO JINYUAN RARE EARTH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this part of hydrogen that comes out accounts for about 70% of the total oxygen absorption, and is directly discharged into the air to cause waste
[0004] At present, there is no relevant report on hydrogen recovery in the industry. In other industries, hydrogen recovery mostly adopts PSA pressure swing adsorption method.
Moreover, such devices are designed with spray towers, steam-water separation, drying and other devices, which are too cumbersome for hydrogen recovery in the hydrogen crushing process of rare earth permanent magnet materials, and the use effect is not obvious.

Method used

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  • A rare earth permanent magnet material hydrogen resource recycling device and its application method

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Embodiment 1

[0051] Such as figure 1 As shown, the present invention provides a hydrogen resource recycling device for rare earth permanent magnet materials, including a vacuum group 1, a reactor group 2 and a gas supply group 3 connected in series through a pipeline 4, wherein,

[0052] Vacuum group 1, it comprises mechanical pump 11 and Roots pump 12 in series, and described vacuum group communicates with described pipeline 4 through butterfly valve 6;

[0053] Reactor group 2, it comprises a first reactor 21 and a second reactor 22, and described first reactor 21 and described second reactor 22 communicate through first branch 51 and second branch 52 respectively The pipeline 4, the first branch 51 and the second branch 52 are respectively provided with a first solenoid valve 71 and a second solenoid valve 72; the first reaction kettle 21 and the second reaction The top of the kettle 22 is equipped with a cooling water device, and electric furnace wire and refractory materials are arra...

Embodiment 2

[0057] The present invention provides a hydrogen resource recycling device for rare earth permanent magnet materials, which includes a vacuum group 1, a reactor group 2 and a gas supply group 3 connected in series through a pipeline 4, wherein,

[0058] Vacuum group 1, it comprises mechanical pump 11 and Roots pump 12 in series, and described vacuum group communicates with described pipeline 4 through butterfly valve 6;

[0059] Reactor group 2, it comprises two first reactors 21 and two second reactors 22, described two first reactors 21 and described two second reactors 22 pass through two first branches respectively 51 and two second branches 52 communicate with the pipeline 4, and the two first branches 51 and the two second branches 52 are respectively provided with two first solenoid valves 71 and two second solenoid valves 71 Two electromagnetic valves 72; the tops of the two first reactors 21 and the two second reactors 22 are equipped with cooling water devices, and e...

Embodiment 3

[0063] An application method of a rare earth permanent magnet material hydrogen resource recycling device, comprising the following steps:

[0064] Step 1, filling the first rare earth permanent magnet material to be hydrogen absorbed into the first reaction kettle 21, filling the second rare earth permanent magnet material to be dehydrogenated into the second reaction kettle 22, the first reaction The weight ratio of the first rare earth permanent magnet material in the kettle 21 and the second rare earth permanent magnet material of the second reaction kettle 22 is 1:1;

[0065] Step 2: Open the butterfly valve 6, the first solenoid valve 71 and the second solenoid valve 72, start the mechanical pump 11 and the Roots pump 12 to vacuum the system until the vacuum degree is less than 0.1Pa, and close the butterfly valve 6 , Mechanical pump 11 and Roots pump 12;

[0066] Step 3, start the heating system of the first reaction kettle 21, so that the temperature in the first reac...

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Abstract

The invention provides a hydrogen resource recycling device for a rare earth permanent magnetic material. The hydrogen resource recycling device for the rare earth permanent magnetic material comprises a vacuum set, a reaction still set and a gas feeding set which are communicated in series through a pipeline, wherein the vacuum set comprises at least one vacuum pump, and the vacuum set is communicated with the pipeline through a first valve; the reaction still set comprises at least one first reaction still and at least one second reaction still, the first reaction stills and the second reaction stills are communicated with the pipeline through a first branch and a second branch respectively, and a first magnetic valve and a second magnetic valve are arranged on the first branch and the second branch respectively; and the gas feeding set comprises a hydrogen feeding device and a protective gas feeding device. The invention further provides an application method for the hydrogen resource recycling device for the rare earth permanent magnetic material, the rare earth permanent magnetic material serves as a medium to absorb and release hydrogen, and the hydrogen is repeatedly recycled; and the structure is simple, and the practicability is strong.

Description

technical field [0001] The invention relates to a hydrogen crushing furnace device, in particular to a hydrogen resource recycling device for rare earth permanent magnet materials, and in particular to a hydrogen crushing device for NdFeB permanent magnet materials. Background technique [0002] Rare earth metals and rare earth alloys have excellent hydrogen storage capacity, they can quickly absorb hydrogen and release heat at room temperature; they can quickly release hydrogen gas (dehydrogenation) at temperatures above 300°C. Hydrogen crushing is a rare earth permanent magnet high-efficiency crushing process. It utilizes the hydrogen absorption and desorption characteristics of rare earth alloys, hydrogen absorption expansion, and material brittleness to achieve crushing. Its intergranular crushing characteristics enable the alloy to maintain the integrity of the crystal grains and improve The particle size distribution of the subsequent jet mill powder is improved. At th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04
Inventor 黄伟超甘家毅黎翻陈谦冉俊铭陈妙送
Owner CHINALCO JINYUAN RARE EARTH
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