PRE-CONCENTRATION AND SIMULTANEOUS PRESELECTION OF AT LEAST ONE GROUP OF RECIPROCATING POLYMERIC MATERIALS FROM LASTING MILLS OF SUSTAINABLE GOODS AT END OF LIFE

摘要

The invention relates to a process for the simultaneous pre-concentration and preselection of at least one group of used polymeric materials of various compositions, mixed with each other and with contaminating materials, resulting from the destruction by grinding of end-of-life consumer goods. end of life, recyclable in the fields of plastics. This method is characterized in that it comprises in order, a) a separation step in a hydraulic medium whose density is set to a value ds between 1.100 and 1.900, b) a step of separating the supernatant fraction a), a step of grinding c) the supernatant fraction of b), then a step d) mechanical separation, the fraction from c) followed by a step e) humidification and a final step f) delivering used, preconcentrated and preselected synthetic polymer materials.