Removal of copper from ferrous scrap

Patent · Tue May 15 00:00:00 EDT 1990

OSTI ID:7269057

Blander, M; Sinha, S N

A process for removing copper from ferrous or other metal scrap in which the scrap is contacted with a polyvalent metal sulfide slag in the presence of an excess of copper-sulfide forming additive to convert the copper to copper sulfide which is extracted into the slag to provide a ratio of copper in the slag to copper in the metal scrap of at least about 10.

• DOE Contract Number: W-31109-ENG-38
• Assignee: PTO; EDB-94-116002
• Patent Number(s): US 4925488; A
• Application Number: PPN: US 7-079389
• OSTI ID: 7269057
• Resource Relation: Patent File Date: 30 Jul 1987
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COPPER
MATERIALS RECOVERY
SCRAP METALS
CONCENTRATION RATIO
COPPER SULFIDES
EXTRACTION
CHALCOGENIDES
COPPER COMPOUNDS
ELEMENTS
MANAGEMENT
METALS
PROCESSING
SCRAP
SEPARATION PROCESSES
SOLID WASTES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management