Efficient high-frequency vibration divergent plasma powder spheroidizing device and method and application thereof

Abstract

The invention discloses an efficient high-frequency vibration divergent plasma powder spheroidizing device and an application method thereof. The device comprises a high-frequency vibration device, apowder dispersion conic disc and a powder spheroidizing device. The powder dispersion conic disc and the high-frequency vibration device are connected and arranged in the powder spheroidizing device,and the vibration frequency of the powder dispersion conic disc is the same as that of the high-frequency vibration device. The vibration frequency of the high-frequency vibration device is adjusted and controlled by controlling the powder feeding amount and the powder feeding speed of a conveying device, powder is dispersed uniformly and efficiently through combination with the powder dispersionconic disc, whole equipment forms a whole by adjusting the temperature and gas flow of a spheroidizing chamber, each piece of powder can be uniformly heated easily in the spheroidizing chamber in thefree falling body process, and the powder spheroidizing effect is improved. The problems that in an existing plasma powder spheroidizing method, powder is input disorderedly in a concentrated manner and is prone to being united, nonuniform in heating and low in spheroidizing efficiency are fundamentally solved, the efficient high-frequency vibration divergent plasma powder spheroidizing device islow in manufacturing cost, and large-scale and batched production can be really achieved.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a high-efficiency high-frequency vibration divergent plasma powder spheroidizing device and its method and application. Background technique [0002] Plasma spheroidization is a new process for preparing spherical powder. This technology was first proposed by METCO and applied to the preparation of hollow spherical zirconia powder. This technology utilizes the high temperature of the plasma flame and the controllability of the flame medium, heats the irregularly shaped powder prepared by the conventional preparation method in the plasma flame to become semi-solid particles, and then rapidly cools and solidifies in an inert atmosphere or water to form spherical particles . The powder morphology after plasma spheroidization treatment is mainly spherical. This spherical powder has good fluidity and surface properties, which is beneficial to eliminate the pores of powder compacted blan...

AI Technical Summary

Problems solved by technology

However, the existing plasma methods have problems such as concentrated and disordered powder input, easy agglomeration, uneven heating, and low spheroidization efficiency, and the spheroidization equipment is extremely expensive, making it difficult to achieve large-scale and batch production in the true sense.

Images