Plasma powder making device with grading device and powder making process thereof

Abstract

The invention belongs to the technical field of material preparation, and particularly discloses a plasma powder making device with a grading device and a powder making process thereof. The powder making device comprises a plasma torch, a reactor, the grading device and a cyclone bag-type dust collector. The upper portion of the plasma torch is connected with a powder feeder, and the side surface of the plasma torch is connected with a high-frequency induction power supply. The upper end of the reactor is connected with the plasma torch, and the lower end of the reactor is connected with a first ejector. The side surface of the bottom of the grading device is connected with the first ejector through a pipeline, the bottom of the grading device is connected with a fine powder collecting tank, the side surface of the top of the grading device is connected with a second ejector, and the grading device is further provided with a dispersion air pipe. The cyclone bag-type dust collector is connected with the second ejector. According to the device, the plasma spheroidizing technology and the technology that ultra-high centrifugal force generated by an impeller rotating at a high speed is used for separating superfine powder are utilized, and the device has the beneficial effects that the structure is simple, use is convenient, plasma spheroidizing and powder separation are integrated, the powder making efficiency is high, and the powder making effect is good.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a plasma powder making device with a classifying device and a powder making process thereof. Background technique [0002] With radio frequency (RF) plasma technology as the core technology, various gases are heated by ohmic heating through the induction of radio frequency electromagnetic fields to generate plasma. The powder makes it form spherical particles by surface tension during the falling process. [0003] The ultra-fine powder produced by mechanical method is difficult to make the material meet the required particle size requirement through mechanical crushing at one time, and the product is often in a large particle size distribution range. In the use of various modern industrial fields, it is often required that ultrafine powder products be in a certain particle size distribution range. In addition, in the pulverization process, only a part of the produc...

AI Technical Summary

Problems solved by technology

[0004] In the current powder classification process, when the powder taken out of the powder tank enters the classification device, it will often come into contact with other substances, causing powder pollution, and ultimately making it difficult for the product to meet the requirements. However, the traditional cyclone classification method, the minimum The grading particle size can only reach 1 micron, and some ultrafine particles can neither be completely separated nor dispersed, and cannot prevent agglomeration

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