Understanding oxygen demand is absolutely critical to ensuring successful metallurgical gold leach optimisation, says Rob de Zoeten, metallurgist at Afrox. “The importance of accurately establishing total oxygen requirement is often overlooked and unfortunately in many cases undersized on-site oxygen plants are installed which cannot produce sufficient oxygen to optimise the leach.” As market leaders in this field, Afrox has developed a unique and fully integrated end-to-end product service offering (PSO) for the global gold mining industry to optimise metallurgical gold leach using oxygen. The Linde Group is a world leader in the generation of low purity (90-95%) oxygen, which is proven to be ideal for gold leaching, through the use of its proprietary Vacuum Pressure Swing Adsorption (VPSA) technology. As a member of The Linde Group, Afrox can provide accurate guidance to gold mines regarding their oxygen requirements for both new and existing leach plants. Linde Engineering’s oxygen VPSA systems will enable gold mines to achieve improved gold recoveries, higher plant productivity and throughput, greater energy efficiency and superior environmental performance. VPSA is an ambi...