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CONTROL ON LINE OF LEAD AND ZINC EVAPORATION IN THE TREATMENT BY TRANSFERRED ARC OF FLY ASHES FROM WASTE INCINERATORS
Author(s) -
Bernard S.,
Fauchais P.,
Jarrige J.,
Lecompte J. P.,
Denoirjean P.
Publication year - 1999
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1999.tb08763.x
Subject(s) - zinc , evaporation , chemistry , inert , argon , fly ash , inductively coupled plasma , plasma arc welding , plasma , chlorine , slag (welding) , metallurgy , waste management , materials science , electrode , physics , quantum mechanics , thermodynamics , engineering , organic chemistry
This study is about the destruction of fly ashes from waste incinerators. It was performed in a laboratory sized plasma reactor where the wastes were treated by a transferred arc stabilized by an argon flow. The concentration of the different evaporated elements, especially those of heavy metals, in the exhaust gases was followed on‐line by an ICP analysis system which allows to caracterize the evaporation rate for lead, zinc and chlorine. 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 are current, the arc length, and the additives to reduce the viscosity of the slag were the parameters of this study.