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Method of Recycling Hazardous Waste (Inventions and Innovation)

ABSTRACT
The production of primary metal from ores has long been a necessary, but environmentally devastating process. Over the past 20 years, in an effort to lessen environmental impacts, the metal processing industry has developed methods for recovering metal values from certain hazardous wastes. However, these processes leave residual molten slag that requires disposal in hazardous waste landfills. A new process recovers valuable metals, metal alloys, and metal oxides from hazardous wastes, such as electric arc furnace (EAF) dust from steel mills, mill scale, spent aluminum pot liners, and wastewater treatment sludge from electroplating. At the same time, the process does not create residual waste for disposal. This new method uses all wastes from metal production processes. These hazardous materials are converted to three valuable products mineral wool, zinc oxide, and high-grade pig iron.
RELATED REPORTS
PERFORMING ORGANIZATION
Alpha Omega Recycling Inc. Environmental Science Inc.
CONTACT INFORMATION
Ehr-Ping HuangFu
U.S. Department of Energy
1000 Independence Ave., S
Washington, DC  20585
website: www.eere.energy.gov/industry/metalcasting/

phone: (202) 586-1493
fax: (202) 586-6507
email: Ehr-ping.huangfu@ee.doe.gov

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