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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium REWAS 2022:Decarbonizing the Materials Industry
Presentation Title Towards Green Ferroalloys: Replacement of Fossil Reductants in the Pre-reduction Process of Chromite by Bio-based Alternatives
Author(s) Marcus Sommerfeld, Bernd Friedrich
On-Site Speaker (Planned) Marcus Sommerfeld
Abstract Scope The production of ferrochrome via carbothermic reduction in submerged arc furnaces is an energy-intensive process relying on the usage of coal and coke as reducing agents. The pre-reduction of chromite in a rotary kiln is currently carried out to decrease the specific electric energy consumption in the smelting furnace. However, as fossil reductants are still needed for reduction, CO2 is emitted. The usage of bio-based carbon with a faster carbon cycle compared to fossil reductants could be an option to decrease the specific CO2-footprint of ferrochrome production. In this paper, the pre-reduction of chromite was investigated using various bio-based reducing agents and lignite coke as a fossil reference. Isothermal reduction trials were conducted at 1000 C, 1150 C and 1300 C and different reaction times. X-ray diffraction was carried out to investigate the obtained product.
Proceedings Inclusion? Planned:
Keywords Pyrometallurgy, Sustainability,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Biomass as a CO2-neutral Carbon Substitute for Reduction Processes in Metallurgy
Carbon Footprint Reduction Opportunities in the Manganese Alloys Industry
CO2 as Raw Material for Chemical and Fuel Productions through Electrocatalysis
Effect of Moisture and High Temperature to Separation Properties of Mixed Matrix Membranes
Field Demonstration of the Reversa Mineral Carbonation Process Using Coal and Natural Gas Flue Gas Streams
HIsarna: A Technology to Meet Both the Climate and Circularity Challenges for the Iron and Steel Industry
Iron-ore Reduction Using Green Hydrogen: A Study for Recycling Wastes in Egyptian Steel Industry
Pilot Scale Test of Flue Gas Recirculation for the Silicon Process
PreMa-project Development of New Technologies to Reduce CO2 Emissions in Mn-alloy Production
Pyrometallurgy-based Research Conducted at Mintek towards Decarbonizing the Metals Industry
Solid Oxide Membrane (SOM) Based Technology for Carbon-free Efficient Production of Solar-grade Silicon
Supercritical Carbonation of Steelmaking Slag for the CO2 Sequestration
Tecno-economic Pre-feasibility Study of a Hydrogen Plasma Based Ferromanganese Plant
The Carbon Age: Reimaging the Lifecycle of Fuels and Materials
Towards Green Ferroalloys: Replacement of Fossil Reductants in the Pre-reduction Process of Chromite by Bio-based Alternatives

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