Atomization of aluminum by unique air nozzle

Abstract EN

Molten aluminum was atomized using a confined atomizer with a single well-fixed air nozzle.

A pilot plant with semi continuous capacity of approximately of 1 / 2 ton per day has been designed for atomization process.

It was found that the metal flow is very sensitive to the exact geometry and the design of the nozzle and atomizer as well as the cooling path and the method of solidification.

The resulting particle size distribution has been discussed by the use of experimental information operated by screen analysis.

Moreover different types for nozzle construction materials were be used and tested during the air atomization process (i.e.

alumina, cast iron, and graphite).

A comparison between the estimated mean particle sizes with other empirical correlated diameter seems to be approached to large extent.

The present work will describe the proposed atomization unit and discuss the specification of the produced powder.