RECYCLE OF ASPHALT BASED ROOF SCRAP IN COMBINED DOUBLE-STAGE LOW TEMPERATURE PROCESS FOR RECOVERING BITUMEN FROM ROOFING WASTE

摘要

Collected roofing waste, derived on-stream of old roof renovation process, exposure cold grinding with sequential separation to extract layers of bitumen from old roofing membrane. Extracted bitumen layers in crumbs are subjected to thermo dehydration and recovering by injection of volatile and modifier compounds.