Anodic processes during recovery of tellurium from oxyhalogenide melts / Lebedev V. A.,Babin A. V.,Nikolaev A. Yu.,Lukinskikh A. V.,Mukhmadeev F. F.,Shunin V. A.,Lebed' A. B. // RUSSIAN JOURNAL OF NON-FERROUS METALS. - 2015. - V. 56, l. 4. - P. 399-403.

ISSN/EISSN:

1067-8212 / 1934-970X

Type:

Article

Abstract:

The process kinetics on a graphite anode in oxyhalide melts based on the CsCl-KCl-NaCl eutectic with TeO2 and NaF additives is investigated at 600A degrees C. Dependences of limiting recharge currents of tellurium atoms and residual discharge currents of oxygen-containing ions on the TeO2 and NaF contents are investigated. Exceeding these currents leads to chlorine liberation in oxychloride melts and liberation of freons in chloride-fluoride melts. The dissolution mechanism of TeO2 in chloride and chloride-fluoride melts through the formation and subsequent dissociation of tellurium oxychloride with the formation of O2-, TeCl (6) (2-) , and {[}TeO2Cl](-) ions is proposed. The presence of these ions in the electrolyte is confirmed by infrared spectroscopy and explains high discharge rates of oxygen-containing ions at the anode.

Author keywords:

CsCl-KCl-NaCl eutectic; tellurium oxide; sodium fluoride; graphite anode; kinetics; process mechanism

DOI:

10.3103/S1067821215040124

Web of Science ID:

ISI:000360701000007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	ALLERTON PRESS INC
Address	18 WEST 27TH ST, NEW YORK, NY 10001 USA
Language	English
EISSN	1934-970X
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	v.a.lebedev@urfu.ru babinav@mail.ru nau\_81@mail.ru lwsustu@gmail.com mff@elem.ru V.Shunin@elem.ru a.lebed@UGMK.com
Number-of-Cited-References	10
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	3
Journal-ISO	Russ. J. Non-Ferrous Metals
Doc-Delivery-Number	CQ6FX