ALLOYS, METALS AND SLAG SOLIDIFICATION PROCESS ALTERNATIVES AND APPLICATIONS

摘要

While Alloys and Metals can be water granulated successfully, the size distribution generally falls between the typical requirements for either sizeable lumps or fine powder. Alternative processes to conventional water granulation will be compared for different ferrous and non-ferrous alloys and metals and stainless steels, which allow the production of the desired lump or powder form. In the Smelting and melting of non-ferrous alloys, mattes are a common material that requires further processing from Pyrometallurgy to Hydrometallurgy. Slag Granulation processes will be compared with metal solidification processes to reinforce the marked process differences. Granulation followed by milling is possible if the material is brittle, a property associated with higher sulphur levels. For lower sulphur content, where the matte is less amenable to milling, atomisation, which offers a further safety benefit in the control of the metal flow into the 'wet zone', can also be considered. This paper is aimed at covering the application of solidification processes in general, with which the author has had experience, and does not cover the exact technical details of each process, as these may be subject to patent rights or will otherwise have been adequately covered elsewhere.