| 摘要 |
Apparatus for removing contaminants from granular metal feedstock which is constructed to apply heat treatment to said granules and subsequent cooling thereof within atmosphere comprising inert or non-oxidising gas and/or reducing gas which comprises: (a) supply means (1), (b) a generally hollow container (6), (c) a primary heating (11) means, (d) a secondary heating means (12), (e) a cooling means (13), (f) means (18) adapted to discharge cooled granules from the container or extension thereof, and (g) atmospheric control means arranged to maintain an atmosphere within the container. A method of treating granules is also disclosed for removing contaminants such as plastic sheathing whilst maintaining a desirably low oxygen content. |
