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A method is proposed for processing nickel sulfide concentrates based on low-temperature roasting with sodium chloride. In the course of research, the dependence of valuable component extraction on excess sodium chloride and roasting temperature and duration is determined, and also cinder water and sulphuric acid leaching regimes are optimized. Optimum results are achieved with the following roasting regimes: temperature 400°C, duration 1.5 h, and excess NaCl 50-200% of concentrate weight. A production scheme is proven on a laboratory scale with subsequent two-stage water and sulphuric acid leaching with calculation of the material balance for nickel, copper, cobalt, and iron. Complete extraction into solution is, %: Ni 95, Cu 99, Co 96.A promising version of sulfide nickel concentrate processing may be low-temperature roasting (up to 400-450°C) with sodium chloride followed by two-stage cinder leaching. The main advantages of this sulfide concentrate processing version are: a reduction in energy consumption due to roasting at comparatively low temperature; formation of extracted metal water soluble compounds, which simplifies cinder leaching, and reduced sulfuric acid consumption. For example, during roasting molybdenum concentrate with sodium chloride molybdenum in the cinder is partly represented by water soluble sodium molybdate [1,2], and during roasting copper and complex sulfide concentrates metal sulfides are entirely transformed into chlorides [3][4][5].Previously [6], the possibility has been demonstrated of leaching nickel from cinder of roasting nickel sulfide concentrate with sodium chloride up to 85% by water and up to 96% by sulfuric acid. The aim of this work is to optimize roasting and leaching regimes in order that the maximum amount of nickel and copper are extracted in the water leaching stage, leaving iron in the sinter.Chemical processes accompanying roasting are quite complicated. In general form, sulfide reaction with sodium chloride in the presence of oxygen occurs by the reaction MeS + 2NaCl + 2O 2 = MeCl 2