Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Recovery of non-ferrous metals from smelter flue dusts and sludges

Patent ·
OSTI ID:6047657
A method is described for treating a smelter by-product so as to recover copper, nickel, zinc, an cobalt metal therefrom and convert any arsenic and sulfur in the smelter by-product into non-leachable forms of arsenic and sulfur, the method comprising: (a) mixing the smelter by-product with hydrated lime to form a paste; (b) forming the paste into agglomerates, (c) roasting the agglomerates in air at a temperature sufficient to oxidize the arsenic and sulfur therein and cause said oxidized arsenic and sulfur to react with the lime in the agglomerates to form non-leachable arsenic-containing and sulfur-containing calcium compounds within the roasted agglomerates; and (d) contacting the roasted agglomerates with a basic aqueous lixiviant solution comprising dissolved ammonia and an ammonium salt so as to dissolve copper, nickel, zinc and cobalt from the roasted agglomerates into the lixiviant solution, thereby converting the lixiviant solution to a pregnant liquor enriched in said copper, nickel, zinc and cobalt.
Assignee:
IMS; EDB-93-120534
Patent Number(s):
A; US 5234669
Application Number:
PPN: US 7-743491
OSTI ID:
6047657
Country of Publication:
United States
Language:
English

Similar Records

SO/sub 2/ emission control in smelters
Journal Article · Sun Oct 31 23:00:00 EST 1982 · Environ. Prog.; (United States) · OSTI ID:5129755
Method for recovery of metal values from secondary copper-smelter flue dusts using an ammonium carbonate-ammonium hydroxide system
Patent · Fri Jun 20 00:00:00 EDT 1986 · OSTI ID:5685624
Environmental conditions in U. S. copper smelters
Technical Report · Tue Apr 01 00:00:00 EDT 1975 · OSTI ID:7282467

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AGGLOMERATION
ALKALINE EARTH METAL COMPOUNDS
AMMONIA
AMMONIUM COMPOUNDS
ARSENIC
ARSENIC COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CHEMICAL REACTIONS
COBALT
CONTROL
COPPER
DISSOLUTION
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXIDES
INDUSTRIAL WASTES
LAND POLLUTION CONTROL
MANAGEMENT
MATERIALS RECOVERY
METALS
MINERAL WASTES
NICKEL
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDATION
OXYGEN COMPOUNDS
POLLUTION CONTROL
PROCESSING
ROASTING
SEMIMETALS
SMELTERS
SOLID WASTES
SULFUR
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZINC