Preparation method of homogeneous ultra-fine aluminum powder includes molten aluminum ingot, milling, material handling, gas-solid separation, the collection of products and product packaging. Its character is consisted by the following steps:
- First aluminum ingot melting, atomized milling in closed container by the whole high-speed disc atomizer, and make atomizing milling under the protection of inert gases.
- Atomization of aluminum powder, through the inert gas at the bottom of container and containers and under the soakage of oil injected into the upper part of the container, at the same time from the container through the pipe at upper part of the container under protection of inert gas to a cyclone separator and secondary spray tower with filters for gas-solid separation.
- Aluminum oil infiltration separated by cyclone down into the bottom is the products to enter the packaging is sealed barrels, gas and fine aluminum powder through the pipe enter into the secondary spray tower, aluminum oil infiltration return into containers at the bottom, the gas returns fan to cycle through filtration, cycle oil also returns to circulation.
- Cumulative oil immersion aluminum powder in containers is recycled as product, and then sealed packaging.