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Environment-friendly waste gas exhausting system of vacuum sintering furnace for neodymium-iron-boron magnet industry

A vacuum sintering furnace, NdFeB technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve problems such as pollution and pipeline explosions

Pending Publication Date: 2017-12-05
DONGYANG ZHONGYUAN MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following defects: (1) the exhaust gas contains dust, oil, etc., which will pollute the environment
(2) At high temperature, the magnetic powder in the gas burns when it encounters air, so that the gaseous oil in the pipeline reaches the ignition point, ignites the pipeline, and has the hidden danger of pipeline explosion

Method used

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  • Environment-friendly waste gas exhausting system of vacuum sintering furnace for neodymium-iron-boron magnet industry
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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] An environmentally friendly waste gas exhaust system for a vacuum sintering furnace used in the NdFeB magnet industry, comprising a Roots pump 1, a mechanical pump 2, a cylinder 3, a filter element 4, a stainless steel pipe 5, and a liquid discharge pipe 7.

[0021] The input end of the Roots pump 1 is connected to the vacuum sintering furnace through a pipeline, and the output end is connected to the mechanical pump 2 through a pipeline; the output end of the mechanical pump 2 is connected to the air inlet 3b of the cylinder 3 .

[0022] The cylinder 3 is hollow to form a cavity for accommodating the filter element 4; the cylinder 3 is provided with an air outlet hole 3a at the top, and an air inlet hole 3b and a liquid discharge hole 3c at the bottom. An exhaust valve 3d is installed on the side wall of the cylinder 3 .

[0023] The filter element 4...

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Abstract

The invention provides an environment-friendly waste gas exhausting system of a vacuum sintering furnace for the neodymium-iron-boron magnet industry and belongs to the technical field of waste gas treatment devices. The environment-friendly waste gas exhausting system comprises a Roots pump, a mechanical pump, a cylinder, a filter element, a stainless steel pipe and a liquid drainage pipe. The input end of the Roots pump is connected with the vacuum sintering furnace through a pipeline, and the output end of the Roots pump is connected with the mechanical pump through a pipeline. The output end of the mechanical pump is connected with a gas inlet hole of the cylinder. The cylinder is hollow, so that a cavity for containing the filter element is formed. A gas outlet hole is formed in the top of the cylinder, the gas inlet hole and a liquid drainage hole are formed in the bottom of the cylinder, and a gas exhaust valve is mounted on the side wall of the cylinder. According to the technical scheme, waste gas is purified so as to be exhausted in clean and environment-friendly modes.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas treatment devices, and in particular relates to an environmentally friendly exhaust gas exhaust system for a vacuum sintering furnace used in the neodymium-iron-boron magnet industry. Background technique [0002] NdFeB permanent magnet has a large magnetocrystalline anisotropy field, high magnetic polarization, and a theoretical magnetic energy product of 64MGOe. Its magnetism is more than 100 times higher than that of the magnetic steel used by people in the 19th century, and it is more than ordinary ferrite. Alnico and Alnico are 10 times higher than the magnetic properties of expensive platinum-cobalt alloys. Its coercive force and energy density are very high, which greatly reduces the size of magnetic material parts and promotes the development of instruments and meters, electroacoustic motors. The miniaturization, light weight, thinning and high efficiency of equipment such as computers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00
CPCF27D17/008
Inventor 舒龙卢燎花陈军
Owner DONGYANG ZHONGYUAN MAGNETIC MATERIAL
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