Kinetics of the Reagent Oxidation of Molybdenum Disulfide by Nitric Acid

Abstract

In the production of molybdenum compounds, JSC "Almalyk MMC" (Republic of Uzbekistan), for a long time used the method of nitric acid opening of raw material, replaced by the scheme of ammonia, then soda leaching of the cinder of the industrial product of molybdenum after oxidative roasting. In view of the improvement of technologies and equipment, there is an interest in environmentally friendly hydro-oxidative methods for their processing based on a strong oxidizer. Molybdenum disulfide in the composition of molybdenite concentrate is subject to surface passivation under the oxidizing conditions of processing the cinder of an industrial molybdenum product. The use of a strong oxidizing agent, nitric acid, makes it possible to overcome it in the hydrometallurgical process of oxidative leaching. The purpose of the study: to study the kinetics of the reaction of oxidative leaching of molybdenite concentrate of industrial production of molybdenum in nitric acid solutions, with the regeneration of nitric acid in them. Used samples of molybdenite concentrate,