| 摘要 |
<p>A method of recovering the different components of multiple layer materials, for instance consisting of pieces (20) of paper, plastic and aluminium foil, comprises delivering the material to the infeed zone (4) of a refiner or disperser (2) that includes mutually opposing discs (5; 6) which include material engagement surfaces or material engagement elements (5a; 6a) and which rotate relative to one another. The gap between the discs (5; 6) is adjusted so that the material present therebetween will be subjected to shear forces that result in rapid mutual separation of the various layers of material. Separated pieces (20'; 20'') of the various layers are pumped in the form of a suspension to a horizontal, rotating, perforated drum (3) which includes an inner screw feeder and to which further suspension or dilution liquid is supplied. Suspended readily slushed or pulped material pieces depart through perforations (3a), whereas layer material (20'') that is not readily slushed or pulped is discharged through one end of the drum. The invention also relates to plant that operates in accordance with the inventive method.</p> |
