Recovery of Carbon black form Scrap Rubber

摘要

A hydrogenation process has been developed to recover carbon black from rubber crumbs prepared form scrap tires. A semi-batch 2 L autoclave was used, with hydrogen continuously bubbled through a slurry of rubber crumbs and a paraffinic dissolution oil under pressures from 300 to 1500 psig and temperatures of about 400 deg. C. The dissolution oil dissolved the rubber and allowed the carbon-black particles to be freed form the polymer matrix.