Process to eliminate hazardous components from the electric arc furnace flue dust and recovering of metals

Patent · Tue Aug 09 00:00:00 EDT 1988

OSTI ID:6527233

Lazcano-Navarro, A

This patent describes a method to recover metals from flue dust generated in an electric arc furnace, the method comprising: charging pelletized or powder flue dust into an electric induction furnace between induction susceptors; sealing of the furnace top to prevent entry of air; injecting natural gas through the bottom of the electric induction furnace as a solitary reducing agent; heating the charge by electromagnetic induction of the susceptors to provide reduction energy; recovering of heavy metals as a zinclead-cadmium alloy in a condenser at the top of the furnace; burning and scrubbing exiting gases in the condenser; and melting the remaining iron to produce steel and slag.

• Assignee: NOV; NOV-89-034360; EDB-89-026301
• Patent Number(s): US 4762554
• OSTI ID: 6527233
• Resource Relation: Patent File Date: Filed date 10 Nov 1986
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ARC FURNACES
EMISSION
CADMIUM ALLOYS
MATERIALS RECOVERY
FUEL GAS
DEMETALLIZATION
LEAD ALLOYS
ZINC ALLOYS
AIR POLLUTION CONTROL
FLY ASH
HAZARDOUS MATERIALS
MELTING
METALS
PARTICULATES
SCRUBBING
WASTE PROCESSING
AEROSOL WASTES
ALLOYS
ASHES
CONTROL
ELECTRIC FURNACES
ELEMENTS
FLUIDS
FUELS
FURNACES
GAS FUELS
GASES
MANAGEMENT
MATERIALS
PARTICLES
PHASE TRANSFORMATIONS
POLLUTION CONTROL
PROCESSING
RECOVERY
RESIDUES
SEPARATION PROCESSES
WASTE MANAGEMENT
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)