Process for the recycling of waste plastic, in particular mixed plastic

摘要

Process for the recycling of all types of waste plastics, in particular mixed plastics (MBS), in which the optionally pre-sorted plastic is ground in at least one disc refiner in the presence of water, mechanically drained and dried from the refiner grinding material, characterized in that films and pieces from thicker plastic parts of possibly pre-sorted waste plastic without subjecting it to a compacting process mechanically to flakes or particles are crushed to a predetermined size, outsiders are sorted out, the crushed material is entered together with water in a Zahnscheibenrefiner whose cooperating toothed disks have interlocking teeth , which are spaced on concentric circles, wherein the gaps between the teeth of a circle are so large that pieces of thicker or solid material or the previously milled Good can pass freely, in Z Ahnscheibenrefiner the flakes of soft plastic to approximately homogeneous small flakes and the thicker pieces or flakes of hard plastic are ground into grains, which adhering to the flakes foreign solids in Zahnscheibenrefiner are largely abraded and present as separate substances in the material to be ground, the ground either on the Zahnscheibenrefiner recycled and / or mechanically dehydrated and dried and separated from the foreign solids.