Oxidation–Reduction Process for Copper Concentrates: An Alternative to Smelting–Converting

This chapter explores a groundbreaking oxidation-reduction process for copper concentrates, presenting a sustainable alternative to traditional smelting-converting methods. The process involves two main stages: an oxidation step to remove sulfur and transform sulfides into oxides, followed by a reduction step using green hydrogen to produce metallic copper and magnetite. The chapter delves into the pilot-scale development of this technology, highlighting its environmental benefits, such as reduced carbon emissions and the valorization of byproducts like magnetite and silica. Preliminary economic evaluations are presented, comparing the new process with conventional methods and demonstrating its cost-effectiveness. The text also discusses optimization alternatives and the potential impact on the steel and cement industries. The conclusion emphasizes the process's sensitivity to hydrogen prices and its potential to revolutionize copper extraction, making it a compelling read for professionals seeking innovative solutions in mineral processing and environmental sustainability.