Enabling CO2 neutral metallurgy for ferrochromium production using bio-based reducing agents
Scientific Reports, vol. 14, pp. 10878
Abstract
-neutral bio-based reducing agents. Since reducing agents remove oxygen bonded with metal oxides present in the ore, they are a necessity for the production of metallic elements. The investigated metal is chromium, a major part of stainless steel, and therefore a highly relevant element for the transition from a fossil-based energy system to a renewable one. The state-of-the-art smelting reduction and pre-reduction process followed by subsequent smelting using various reducing agents are investigated in this article. The obtained products, metallurgical efficiencies, energy consumption and off-gas generation were compared. While the products produced with bio-based reducing agents are comparable with the reference trials using metallurgical coke regarding the major components in the metal, the concentration of detrimental phosphorus is significantly higher using bio-based reducing agents. The metallurgical efficiency of the process is comparable to the usage of bio-based reducing agents and coke. However, the energy consumption and the generation of off-gas is higher, when coke is replaced by bio-based reducing agents.
Authors 3
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Affiliation as printed
IME Process Metallurgy and Metal Recycling, Institute of RWTH Aachen University, Aachen, Germany. msommerfeld@ime-aachen.de
IME Process Metallurgy and Metal Recycling, Institute of RWTH Aachen University, Aachen, Germany
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Affiliation as printed
IME Process Metallurgy and Metal Recycling, Institute of RWTH Aachen University, Aachen, Germany
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Affiliation as printed
IME Process Metallurgy and Metal Recycling, Institute of RWTH Aachen University, Aachen, Germany
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