|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||REWAS 2022:áDecarbonizing the Materials Industry
||Towards Green Ferroalloys: Replacement of Fossil Reductants in the Pre-reduction Process of Chromite by Bio-based Alternatives
||Marcus Sommerfeld, Bernd Friedrich
|On-Site Speaker (Planned)
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.