Progress in Plasma Processing of Materials, 1999

ISBN Print: 1-56700-126-2

TREATMENT OF ZINC CONTAINED IN FLY ASHES FROM WASTE INCINERATORS BY TRANSFERRED ARC

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DOI: 10.1615/ITPPC-1998.1070
pages 721-729

S. Bernard Science des Procedes Ceramiques et de Traitements de Surface (SPCTS), CNRS UMR 6638, Faculte des Sciences de Limoges, 123, av. A. Thomas - 87060 Limoges Cedex, France

F. Petit UPRES A 6015 CNRS - L.M.C.T.S. - Equipe "Plasma, Laser, Materiaux" 123, avenue Albert Thomas - 87060 Limoges Cedex - France

Pierre Fauchais Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France

J. Jarrige Science des Procedes Ceramiques et de Traitements de Surface (SPCTS), CNRS UMR 6638, Faculte des Sciences de Limoges, 123, av. A. Thomas - 87060 Limoges Cedex, France

J. P. Lecompte Science des Procedes Ceramiques et de Traitements de Surface (SPCTS), CNRS UMR 6638, Faculte des Sciences de Limoges, 123, av. A. Thomas - 87060 Limoges Cedex, France

Аннотация

This study is about the destruction of fly ashes from waste incinerators (F.S). It was performed in a laboratory sized plasma reactor where these F.S were treated by a transferred arc stabilized by an argon flow. The concentration of the different evaporated elements, especially heavy metals, in the exhaust gases was followed on line by an ICP analysis system. The analysis of the inert glass formed after plasma treatment was made by X-rays fluorescence which allowed measuring the conversion efficiency of the process. For an argon plasma, the type of the lead or zinc anion salts, the arc current, the arc length, and the additives to reduce the viscosity of the slag were the parameters of this study.

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