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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Energy Technologies and CO2 Management
Presentation Title Investigation of Slag and Condensate from the Charge Top in a FeSi75 Furnace
Author(s) Marit Buhaug Folstad, Karin Fjeldstad Jusnes, Merete Tangstad
On-Site Speaker (Planned) Marit Buhaug Folstad
Abstract Scope Metallurgical silicon/ferrosilicon is produced industrially in submerged arc furnaces by carbothermic reduction of quartz. In addition to raw materials, oxide impurities are present in the furnace. Accumulated slag is typically found along the furnace walls towards the charge top, as well as the furnace bottom and taphole. During optimal tapping the slag will follow the alloy. Accumulated slag in the furnace will affect the furnace operation. Large amounts of accumulated slag will have a negative effect on the operation and lead to more CO2 emissions. Partly melted charge at the surface from a FeSi75 furnace have been collected and analyzed. All samples contained slag/condensate, carbon and/or unreacted SiO2. The slag samples contained SiO2, in addition to Fe, Na, K, Mg, Al and Ca. Slag at the charge surface may be due to sufficient high temperature to produce slag, which again can affect how the materials distribute in the furnace.
Proceedings Inclusion? Planned:
Keywords High-Temperature Materials, Other, Other

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Environmental Life Cycle Assessment of Gold Production in Nevada
Extraction of Valuables Metals from Luanshya Copper Smelting Slag with Minimal Waste Generation
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Investigation of Slag and Condensate from the Charge Top in a FeSi75 Furnace
Lithium Extraction from Natural Resources to Meet the High Demand in EV and Energy Storage
Molten Salt Mg-air Battery Improvement and Recharging
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Reform and Practice of Energy Saving and Consumption Reduction Technology of 500 t/d Beckenbach Annular Lime Kiln
Research on the Gasification Characteristic of Cokes of BIOC-HPC Extracted from the Mixture of Low-rank Coal and Biomass
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