Process for separating hazardous metals from waste materials dur

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

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75 1036, 75 1032, 75 1065, 588252, C22B 902

Patent

active

061360635

ABSTRACT:
A process and system for separating metals from a waste composition and for producing a reusable glass product is disclosed. The process includes heating waste materials containing at least one glass forming substance to a temperature sufficient to volatilize any volitile metals contained within the waste material. The waste material is also heated to a temperature and for a time sufficient for substantially all of the glass forming substances contained within the material to melt and form a molten glass. In one embodiment, the waste materials are heated in a reducing atmosphere in a direct contact radiant heating device, such as an electric arc furnace.

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O'Connor, et al.; "Vitrification of Municipal Waste Combuster Residues: Physical and Chemical Properties of Electric Arc Furnace Feed and Products"; pp. 17-37; 1994; Albany, Oregon No Month.
O'Connor, et al.; "Evaluation of the Graphite Electrode Arc Melter for Processing Heterogenous Mixed Waste"; pp. 559-569; Reprinted from the 1996 International Incineration Conference, Savannah, Georgia, May 6-10, 1996.
Oden, et al.; "ASME/U.S. Bureau of Mines Investigative Program on Vitrification of Residue (ASH) from Municipal Waste Combustion Systems"; CRTD-vol. 24; 1994; New York, New York No Month.
Oden, et al.; "Evaluation of the Three-Phrase, Electric Arc Melting Furnance for Treatment of Simulated, Thermally Oxidized Radioactive and Mixed Wastes (In Two Pars): 2. Description of Waste Mixtures and Results of Melting Test" RI 9612; United States Department of the Interior, United States Bureau of Mines--Report of Investigations/1996 No Month.

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