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|In the Central African Copper Belt, sulfidization flotation is the standard practice for dolomitic copper oxide ores. It is a delicate process, and its plant application requires close control of the reagent addition. This paper presents the results of a thorough laboratory investigation. It features the monitoring, during sulfidization, of the pulp pH, the residual sulfide ion concentration and redox potential. Variables examined during the process were: retention times, sulfidizer additions, pH, collector type, dispersant dosage and reducing agent addition. Implications of the findings for plant application and process control are also briefly examined.|