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Replacing Fossil Carbon in the Production of Ferroalloys with a Focus on Bio-Based Carbon: A Review

Marcus Sommerfeld, Bernd Friedrich

2021enferroalloysbio-based carbonsustainabilitymetallurgy

Abstract

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The production of ferroalloys and alloys like ferronickel, ferrochromium, ferromanganese, silicomanganese, ferrosilicon and silicon is commonly carried out in submerged arc furnaces. Submerged arc furnaces are also used to upgrade ilmenite by producing pig iron and a titania-rich slag. Metal containing resources are smelted in this furnace type using fossil carbon as a reducing agent, which is responsible for a large amount of direct CO2 emissions in those processes. Instead, renewable bio-based carbon could be a viable direct replacement of fossil carbon currently investigated by research institutions and companies to lower the CO2 footprint of produced alloys. A second option could be the usage of hydrogen. However, hydrogen has the disadvantages that current production facilities relying on solid reducing agents need to be adjusted. Furthermore, hydrogen reduction of ignoble metals like chromium, manganese and silicon is only possible at very low H2O/H2 partial pressure ratios. The present article is a comprehensive review of the research carried out regarding the utilization of bio-based carbon for the processing of the mentioned products.

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Cite This Work

@article{3d075b8e-fb55-4053-adf4-080a185b83c3,
  title={Replacing Fossil Carbon in the Production of Ferroalloys with a Focus on Bio-Based Carbon: A Review},
  author={Marcus Sommerfeld and Bernd Friedrich},
  year={2021},
  language={en}
}
TY  - JOUR
TI  - Replacing Fossil Carbon in the Production of Ferroalloys with a Focus on Bio-Based Carbon: A Review
AU  - Marcus Sommerfeld
AU  - Bernd Friedrich
PY  - 2021
LA  - en
ER  -

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