3296 Evaluation of Solar Thermal Pretreatment of Carbonate-rich Manganese Ores in High-carbon Ferromanganese Production through Dynamic Process Modelling
Abstract
The necessity of reducing greenhouse gas emissions to limit the impact of anthropogenic climate change means that all industrial processes should investigate their options towards decarbonisation. Iron, steelmaking, aluminium, and cement production produce the most industrial emissions. Although most research focuses on decarbonising these industries, minerals processing inductries must be decarbonised to achieve net zero emissions by 2050 goals. Incorporating renewable energy sources and avoiding the combustion of fossil fuels are two ways to reduce greenhouse gas emissions. This paper reports on the results from a dynamic process model developed to investigate the feasibility of concentrating solar thermal pretreatment of manganese ores to pretreat carbonate-rich manganese ores for increased ferromanganese smelter productivity and reduced greenhouse gas emissions. The results found that pretreated ores reduce the energy requirement for smelting significantly for some ores and lowers total carbon dioxide emissions by 13 to 19 % compared to the traditional smelting route. A high-level economic evaluation shows that solar thermal treatment is financially viable for low cryptomelane, high braunite ore that is common in the Kalahari Manganese Field.
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Copyright (c) 2024 Lina Hockaday, Frank Dinter, Quinn Reynolds, Craig McGregor
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