Dust filtering gathering apparatus

Abstract

The invention discloses a dust filtering gathering apparatus which is applied to equipment for preparing neodymium-iron-boron rare-earth alloy powder, and the equipment possesses an exhaust valve. The dust filtering gathering apparatus comprises a container, a filter screen and an air inlet pipe; the container is inside provide with an absorption liquid which divides the internal chamber of the container into a filtering chamber and an exhausting chamber; an exhaust port is arranged at the exhausting chamber part of the container; the filter screen is spread on the liquid surface of the absorption liquid in the container; and one end of the air inlet pipe is communicated with the exhaust valve, and the air inlet pipe penetrates through the container and stretches into the interior of the absorption liquid. The apparatus is capable of gathering alloy powder during preparation of the neodymium-iron-boron rare-earth permanent-magnet alloy powder, reducing dust in air, improving working environment, eliminating safety hidden trouble, also reducing material waste, reducing cost and improving economic benefit.

Description

technical field [0001] The invention relates to the field of NdFeB production, in particular to a dust filtering and collecting device for preparing NdFeB rare earth permanent magnet alloy powder. Background technique [0002] NdFeB rare earth permanent magnet material is the permanent magnet material with the strongest magnetic properties today. It is known as the "magnet king" and has a wide range of applications. Pulverization is a key process in the production of NdFeB rare earth permanent magnet materials. At present, the pulverization method adopted by most companies is to carry out hydrogen crushing for intermediate crushing and then jet milling. During the pulverization process, a large amount of dust-containing airflow is generated. , the secondary crushing equipment used in it has an electromagnetic exhaust valve at the outlet of the fan to discharge the gas into the air. [0003] The equipment has the following defects: (1) the gas discharged from the exhaust val...

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Problems solved by technology

[0003] The equipment has the following defects: (1) the gas discharged from the exhaust valve contains a large amount of alloy powder, which causes a large amount of dust to be suspended in the air, resulting in a poor working environment and certain damage to the body of the staff; (2) the discharged neodymium Iron-boron rare earth permanent magnet alloy powder will spontaneously ignite after contacting air, which has certain safety hazards; (3) A large amount of alloy powder is taken out of the equipment and discharged into the air, resulting in waste of materials and increased costs

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