Reaction Sequences in Flash Smelting and

Flash smelting and flash converting are advanced technologies essential for the efficient smelting of copper and nickel sulfide ores. This review aims to comprehensively explore the intricate microscale phenomena that govern these processes, addressing the notable absence of a holistic understanding regarding the suspension oxidation of sulfides and its impact on subsequent smelting operations. The methodology involves an analytical review of recent advancements and accumulated knowledge in the field, focusing on the coupling of reaction tendencies, heat fluxes, and the chemistry of the off-gas train from smelters to acid plants. Key results illustrate critical correlations between suspension oxidation dynamics and the overall thermal and chemical processes occurring within both the flash smelting and converting furnaces. This work highlights the vital need for improved flow-sheet understanding, bridging gaps in current scientific literature, and encouraging further research to enhance operational efficiency and environmental management in metallurgical practices. The findings emphasize the importance of multifaceted approaches to finely tune reaction parameters and optimize energy balances within these complex systems.