| 摘要 |
<p>The invention relates to a process and facility for treating and sorting recyclable waste materials which include a selection of heavy undesirable materials, with a shredding process for the residual raw waste, separation processes for separating recyclable materials from the shredded raw waste to produce a mixture of shredded plastic, and with separation processes for recovering sorted plastics. In order to reduce the number of process stages and energy consumption while improving sorting, the following process stages are proposed: a) soaking the isolated raw waste in a liquid in order to dissolve, partially dissolve, and release soluble components, b) selection of heavy undesirable materials in a horizontal liquid stream, based on the sinking rate (2), c) conveying of the moist crude waste from which the heavy undesirable materials have been released to the shredding device (3), d) shredding of the raw waste as it is simultaneously dried by the heat of crushing to produce shreds of less than 55 mm in size, e) separation of recyclable materials to produce a mixture of various plastics - in at least one process stage to separate the finest and lightest materials (42) such as fibres, silicon compounds and organic contaminants, and/or in at least one process stage for separating metals (41, 43), and f) separation of the mixture of various plastics using the float-sink process according based on the densities (51, 52) of the plastics.</p> |
