Oxysulphide in metallurgy of nickel and cobalt / Reznik ID,Tarasov AV,Kharlakova TA,Selivanov EN // . - 1997. - V. , l. . - P. 747-758.

ISSN/EISSN:

нет данных / нет данных

Type:

Proceedings Paper

Abstract:

On blowing nickel matte in a converter without quartz, first the oxidation of metallic iron and a part of FeS occurs without evolving sulfur dioxide, the formed FeO dissolves in a sulphide smelt and form a homogeneous oxysulphide smelt. On further increasing the FeO content, the oxysulphide separates into 2 layers. Based on the laboratory investigation of FeO-(FeS+Fe degrees) - (Ni3S2+Ni degrees) ternary phase diagram we have identified the separation region at 1250 degrees C. The boundaries of the separation region have the form of an are and the composition of the separated oxysulphide layers is defined by the canodes. In the nickel or copper-nickel matte silicacalcium oxide slag system at 1250 degrees C three layers, namely sulphide, oxysulphide, and slag may be formed. A high slag basicity due to the presence of CaO can serve to enhance the activity of FeO; a low nickel content in the matte corresponds to a high concentration of FeS therein; FeO from slag and FeS from the matte form a homogeneous FeO-FeS solution, i.e. an oxysulphide layer. The investigation on the ``Camebaks{''} apparatus and by the nuclear gamma-ray resonance spectroscopy method of the phase composition in a slowly cooled oxysulphide layer has shown the presence of four phases: wustite, troilite, ferronickel grains, and calcium oxide-silica inclusions. Knowledge of regularities in the oxysulphides formation makes it possible to use them in pyrometallurgy of nickel and cobalt or preventing their formation.

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Web of Science ID:

ISI:000071923700057

Соавторы в МНС:

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Другие поля

Поле	Значение
Editor	Mishra, B
Booktitle	EPD CONGRESS 1997
Note	EPD Congress 1997, at the Annual TMS Meeting, ORLANDO, FL, FEB 09-13, 1997
Organization	Minerals Met \& Mat Soc, Extract \& Proc Div
Publisher	MINERALS, METALS \& MATERIALS SOC
Address	184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
Language	English
ISBN	0-87339-367-8
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Selivanov, Evgeniy/T-7296-2017
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	2
Doc-Delivery-Number	BK37F