Dezincing Technology

Conference · Fri Aug 01 04:00:00 EDT 1997

OSTI ID:292807

Dudek, F J; Daniels, E J ^[1]; Morgan, W A ^[2]

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1. Argonne National Lab., IL (United States). Energy Service Div.
2. Metal Recovery Technologies, Inc., East Chicago, IN (United States)

Half of the steel produced in the US is derived from scrap. With zinc-coated prompt scrap increasing fivefold since 1980, steel-makers are feeling the effect of increased contaminant loads on their operations. The greatest concern is the cost of treatment before disposal of waste dusts and water that arise from remelting zinc-coated scrap. An economic process is needed to strip and recover the zinc from scrap to provide a low residual scrap for steel- and iron-making. Metal Recovery Technologies, Inc., with the assistance of Argonne National Laboratory, have been developing a caustic leach dezincing process for upgrading galvanized stamping plant scrap into clean scrap with recovery of the zinc. With further development the technology could also process galvanized scrap from obsolete automobiles. This paper will review: (1) the status of recent pilot plant operations and plans for a commercial demonstration facility with a dezincing capacity of up to 250,000 tons/year, (2) the economics of caustic dezincing, and (3) benefits of decreased cost of environmental compliance, raw material savings, and improved operations with use of dezinced scrap.

• Research Organization: Argonne National Lab., Energy Systems Div., IL (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 292807
• Report Number(s): ANL/ES/CP--93627; CONF-9709109--; ON: DE97008635
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ALKALINE HYDROLYSIS
ECONOMICS
MATERIALS RECOVERY
PERFORMANCE
SCRAP METALS
WASTE PROCESSING PLANTS
ZINC