Recovering Polyurethane Foam and Other Plastics from Auto-shredder Reject.
Valdez-EG; Dean-KC; Bilbrey-JH; Mahoney-LR
NTIS: PB 250 705 :13 pages
The federal Bureau of Mines, in cooperation with Ford Motor Company, investigated the recovery of polyurethane foam and other assorted plastics from the nonmagnetic reject of automobile shredders. Preliminary studies were conducted on a 1957 hulk augmented with additional foam and assorted plastics. The proposed flowsheet developed by the Bureau from the preliminary studies consists of a combination of screening, water classification, and gravity separation. The process was then tested on reject from two shredded 1972 cars. All of the foam and between 52 and 70 pct of the assorted plastics were recovered. The composition of the reclaimed foam concentrates ranged from 46 to 66 pct foam; the concentrates were hydrolyzed in laboratory tests by Ford Motor Company to produce a reusable liquid mixture of polyether glycol monomers and toluene diamine. Work done in cooperation with the Ford Motor Company
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 250 705