Combined thermal treatments of industrial wastes for the elimination of toxic elements and the concentration of valuable metals
- Laboratoire d`Environnement et de Mineralurgie, Vandoeuvre (France)
Thermal treatments of five different types of non-ferrous metallurgical wastes, under controlled atmosphere, were carried out at temperatures lower than 800 C. The aim of these treatments was to reduce the toxic elements content and to increase that of valuable metals in the residue. Best results were obtained by their treatments in air or hydrogen or successively both of them. Simple treatments using air or hydrogen of three samples allowed the elimination of more than 95% of their toxic elements and almost doubled their valuable metals` concentration. For the rest two samples, combined treatment was necessary for their efficient decontamination and the concentration of valuable metals, in the treatment`s residue, to a reasonable value. Most of the solids issued from these treatments can be recycled in the current non-ferrous metallurgical processes.
- OSTI ID:
- 197298
- Report Number(s):
- CONF-951105-; ISBN 0-87339-318-X; TRN: IM9612%%72
- Resource Relation:
- Conference: 3. international symposium on reycling of metals and engineered materials, Point Clear, AL (United States), 12-16 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Third international symposium: Recycling of metals and engineered materials; Queneau, P.B. [ed.] [Hazen Research, Inc., Golden, CO (United States)]; Peterson, R.D. [ed.] [Reynolds Metals Co., Muscle Shoals, AL (United States)]; PB: 1048 p.
- Country of Publication:
- United States
- Language:
- English
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