Oxidative Hydrometallurgy of Sulphide Mi

Sulphide minerals are critical sources of valuable metals, often extracted through conventional pyrometallurgical or hydrometallurgical processes. Recent environmental concerns have led to increased interest in hydrometallurgy, particularly for copper production from mixed and low-grade ores. This chapter examines innovative approaches, focusing on ozone as a powerful oxidant to enhance the leaching of sulphide minerals. We discuss the advantages of using ozone over traditional oxidants like hydrogen peroxide and chlorine, emphasizing its high oxidation potential and favorable conditions for aqueous oxidation. The methodology includes a review of established leaching processes, the conditions for aqueous oxidation, and lab-scale experiments demonstrating ozone's efficiency. We also highlight the kinetic models applicable to these processes, particularly the shrinking core models that describe the reaction dynamics. Preliminary findings suggest that integrating advanced oxidation processes could mitigate the economic and ecological drawbacks of current methods, making ozone a promising candidate for improving sulphide mineral extraction efficiency. Consequently, our research aims to pave the way for enhanced hydrometallurgical processes that are both environmentally sustainable and economically viable.