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Recovery of the Nonferrous Metals from Auto Shredder Rejects by Air Classification.
Chindgren-CJ; Dean-KC; Peterson-L
NTIS: PB 200 708 :11 pages
Two air classification systems were built and tested as separatory devices for recovering the nonferrous metal values from shredded automotive nonmagnetic reject scrap. A horizontal air system with a capacity up to 16 tons per hour was used to obtain preliminary separations, and a smaller capacity vertical system was used as a cleaning device. Shredded automobile reject materials containing aluminum, copper, and zinc values of about $55 per ton were air- classified in the horizontal elutriator. Ninety-six percent of the metal was recovered in a 74-percent metal concentrate. Tandem operation of both classifiers recovered 92 percent of the metal in an 80-percent concentrate while rejecting 87 percent of the nonmetallics. Heavy media separation of the air-classified concentrate produced an overall recovery of 91 percent of the metal in the form of a 99-percent metal concentrate.
NTIS Accession No.
NTIS: PB 200 708
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division