Investigation of the kinetics of cobalt decarburization in a direct-current arc furnace / Zhukov V. P.,Kniss V. A.,Kniss S. V.,Avdeev A. S. // RUSSIAN JOURNAL OF NON-FERROUS METALS. - 2010. - V. 51, l. 2. - P. 97-100.

ISSN/EISSN:

1067-8212 / нет данных

Type:

Article

Abstract:

Under the industrial operating conditions of a direct-current arc furnace in a temperature range of 1530-1650A degrees C, the kinetics of cobalt decarburization by CoO additives is investigated. It is shown that, when the carbon concentration in the melt is lowered to 0.3-0.5\%, the process rate is limited by the diffusion of carbon into the bulk of the liquid metal with activation energy of 58.74 kJ/mol. In the initial period of the process, the controlling stages are the saturation of the surface layer with oxygen and dissolution of CoO. To decrease the diffusion obstacles and shorten the duration of the final treatment of fire cobalt, it is recommended that convective flows in a bath be developed due to the increase in the current load.

Author keywords:

kinetics of decarburization; diffusion of carbon; arc furnace; dissolution of CoO

DOI:

10.3103/S1067821210020045

Web of Science ID:

ISI:000277376500004

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	ALLERTON PRESS INC
Address	18 WEST 27TH ST, NEW YORK, NY 10001 USA
Language	English
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	Zhukov@ural.ru nico@ufaleynickel.ru nico@ufaleynickel.ru
Number-of-Cited-References	6
Usage-Count-Since-2013	11
Journal-ISO	Russ. J. Non-Ferrous Metals
Doc-Delivery-Number	592JZ