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Recovery of Copper and Steel from Scrap Metal.

Authors
Leake-VG; Fine-MM
Source
U S Pat 3 776 718 1973 Dec; :
Link
NIOSHTIC No.
10011969
Abstract
Scrap containing fe and cu is treated with an aqueous solution of alkali metal sulfates or silicates prior to recovery of cu by preferential melting in an inert molten medium, i.e., Bacl2, CaCl2, silicate slags, or commercial heat-treating salts. The chemical pretreatment reduces the alloying tendency of cu by forming a barrier layer on iron and thus substantially increases the recovery of cu.
Publication Date
19731201
Document Type
PA;
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Identifying No.
PAT 3,776,718
NIOSH Division
TCRC;
Source Name
U.S. Pat. 3,776,718; Dec. 4, 1973; Chem. Abstr. 80:136,129B
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