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The studies on the development of a new process for nickel and cobalt recovery from ferriferous laterite ores via a reducing roasting–sulfuric acid leaching are carried out. The conditions for the reducing roasting of the ores in the temperature range from 400 to 950°C and for the sulfuric acid leaching of the cinder (after cooling without air and passivation in water) at pH 1.4–3.0 and the weight...