| 摘要 |
Installation for drying recovered or waste materials in general, such as turning residues (swarf) or ferrous or non-ferrous scrap prior to its use in furnaces, electrical cable scrap, urban waste, etc. This installation has a vertical-axis drier in which there is a vertically extending drum which encloses a conveyor for the material in question. The material is heated indirectly via the drum in order to evaporate off the liquid it contains whilst, in the drum, a protective atmosphere is maintained in order to prevent oxidation of the material. The vapours at the outlet from the drum are burned in the drier in order to heat the material and to make operation of the installation self-sufficient. Alternatively, the vapours may be processed in order to recover their oily content, for example by means of distillation.
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