Сибирский федеральный университет

Перевод названия: ВОССТАНОВЛЕНИЕ НИКЕЛЯ ИЗ СУЛЬФИДОВ КОНЦЕНТРАТА РАЗДЕЛЕНИЯ ФАЙНШТЕЙНА

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.3103/S1067821210010062

Ключевые слова: concentrate of the Bessemer matte separation, nickel sulfides, nickel direct reduction from sulfides, process chemistry, kinetics, alkali consumption, oxidizing processes, Direct Reduction, Matte separation, Nickel sulfide, Oxidizing process, Alkalinity, Nickel alloys, Polysulfides, Pyrometallurgy, Sodium, Sulfur, Sulfur compounds, Nickel, concentration (composition), experimental study, processing, reaction kinetics, reduction, smelting, sulfide

Аннотация: The possibility of direct reduction of nickel from its sulfides (heazlewoodite, pentlandite, and disulfide) by intrinsic sulfide sulfur in a sodium hydroxide melt is confirmed experimentally. This process can be performed in a temperature range of 550-700 degrees C reaching a 95-98% degree of metallization. The chemistry of utilization reactions of sulfur varies as a function of the duration of the phase contact (8-12 minutes). At the initial stage, sodium polysulfides are accumulated in alkali fusion cake and are decomposed in time, participating in the disproportionation reaction with the formation of monosulfide sulfur. The process of reduction of nickel from sulfides is limited by the intradiffusion kinetics.

Журнал: RUSSIAN JOURNAL OF NON-FERROUS METALS

Выпуск журнала: Vol. 51, Is. 1

Номера страниц: 32-38

ISSN журнала: 10678212

Место издания: NEW YORK

Издатель: ALLERTON PRESS INC

• Chekushin V.S. (Sci & Technol Ctr OOO Aurum, Krasnoyarsk 660049, Russia)
• Oleinikova N.V. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660025, Russia)
• Dontsov A.V. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660025, Russia)

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