| 摘要 |
A processing system for and method of recovering a desired material from a source of particulate material containing contaminated material, the system comprising : a heat treatment unit for heat treating a supply of particulate material, some of which is contaminated, in accordance with a heating regime, wherein the heating regime provides for an optically-detectable change in a physical characteristic of one or more materials other than the desired material; and a sorting unit which receives the particulate material, while still in the heated condition, from the heat treatment unit, and separates contaminated particles from particles of the desired material by identification of the optically-detectable change in the physical characteristic of the one or more materials other than the desired material. |
