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Use of Shredded Automobile Scrap for Copper Cementation.

Staker WL; Groves RD
NTIS: PB 263 575 :13 pages
The Bureau of Mines investigated the use of shredded automobile scrap for copper cementation. Air agitation was used to improve the cementation rate and prevent excessive buildup of copper on the iron. The pieces of scrap were too large to be properly evaluated in the laboratory; therefore, a pilot scale test unit was constructed and the process tested at field locations. Pregnant solution was obtained from industrial leaching operations, processed in the test unit and the barren solution and cement copper were returned to the plant process stream. The test results showed that the air-agitated launder containing automobile scrap was an effective means for recovering copper from leach solutions. A continuous 14-day test run was made without a noticeable decrease in cementation efficiency. The most suitable scrap product was obtained from incinerated automobile hulks shredded in a hammer type of shredder. However, it was necessary to remove small pieces such as nuts and bolts because they interfered with the discharge of the copper product.
Publication Date
Document Type
IH; Report of Investigation;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
RI 8198
NIOSH Division
Source Name
NTIS: PB 263 575
Page last reviewed: November 26, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division