| 摘要 |
<p>Apparatus for producing particulate material comprises an atomisation die 9 connected to receive a supply of gas and positioned about the circumference of a stream 5 of liquid material. The die is operable to direct a jet of the gas onto a freely falling stream of the liquid material to produce a plume 20 of liquid particles. Flame generation means is provided and is operable to raise the temperature of the gas. The flame may be generated by an arc between electrode 19 and lip 12 of the gas outlet. In the alternative electrode 19 may be placed in the heated melt in crucible 2. Alternatively the gas supplied may be oxygen plus a fuel gas which burns at a high temperature. In either case a supersonic stream of atomising gas is provided to produce particles of less than 20 microns in size. The melt may be metal, glass or ceramic. <IMAGE></p> |
