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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

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ISSN Druckformat: 1093-3611

ISSN Online: 1940-4360

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00005 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

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Simulation of Heavy Metals Volatility during the Vitrification of Fly Ashes by Thermal Plasma

Volumen 10, Ausgabe 1, 2006, pp. 117-139
DOI: 10.1615/HighTempMatProc.v10.i1.90
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ABSTRAKT

This is a study of the heavy metals volatility during the vitrification of fly ashes by arc plasma. The vaporization model applied is based on the method of the free enthalpy minimization of the system coupled with the mass transfer equations at the reactional interface. This model enables us to determine the influence of the various parameters -like temperature, nature of the atmosphere of the furnace and matrix composition- on the volatility of lead, cadmium, zinc and arsenic. The results obtained indicate that an increase of the bath temperature produces an increase of the metals volatility. The oxygen content in the carrier gas permits a better metal's containments in the matrix, except in the case of the chromium which is more volatile in an oxidizing atmosphere. However the chlorine species trapped in the containment matrix accelerates considerably the evaporation of zinc, lead and cadmium, but don't affect the arsenic volatility. It has been noticed that it is possible to trap arsenic species in a solid state by the production of calcium arsenate if the lime content is increased. The results of the model are compared with those obtained from the experimental studies.

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