Engineering & Technologies, 2016, 9(6), 894-904 ~ ~ ~ УДК 669.2.018.674 Prerequisites to Development of Reduction Process in Heavy Non-Ferrous Metal Metallurgy Vladimir S. Chekushin*a and Natalya V. Oleinikovab aKrasnoyarsk Institute of Railway Engineers Branch of Irkutsk State Transport University 89 Ketshoveli Str. <...> Krasnoyarsk, 660028, Russia b Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia Received 29.01.2016, received in revised form 18.04.2016, accepted 05.07.2016 Essence of upgrading to process heavy non-ferrous metal sulfi de concentrates and of reduction operations has been analyzed. <...> A landmark solution for metal reduction immediately from sulfi de compounds is proposed. <...> Keywords: reducing properties of sulfi de sulfur, melt of caustic soda, metal reduction in “metal sulfi deNaOH” system. <...> Citation: Chekushin V.S., Oleinikova N.V. Prerequisites to development of reduction process in heavy non-ferrous metal metallurgy, J. Sib. <...> All rights reserved * Corresponding author E-mail address: doz.008@rambler.ru # 894 # Vladimir S. Chekushin and Natalya V. Oleinikova. <...> Ключевые слова: восстановительные свойства сульфидной серы, расплав каустической соды, восстановление металла в системе «металл – сульфид – NaOH». <...> Introduction Global production of heavy non-ferrous metals from mineral raw materials is based on energyintense processes involving considerable impacts on the ecosystem and aggravation of global problems. <...> The challenge of metallurgical production is to produce metals from chemical compounds of mineral or technological origin. <...> Principal source for production of heavy non-ferrous metals are sulfi de mineralraw materials. <...> Target component content in ores (0.5–5%) considered, the production process of heavy metals can be presented as a chain of successive upgrading operations providing 100…10-fold concentration of target elements involving various techniques. <...> Concentrates accumulate from 60 to 80% sulfur present in the concentrates. <...> In addition to target mineral forms sulfi de concentrates of non-ferrous metals are primarily specifi ed by presence of the iron-containing components. <...> Current metallurgical enrichment of sulfi de # 895 # Сибирский федеральный университет Vladimir S. Chekushin and Natalya V. Oleinikova. <...> Processing of mineral raw materials of heavy <...>