|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||New Phase in Upgrade of Søderberg Technology at RUSAL’s Smelters
||Viktor Y. Buzunov, Viktor Mann, Vitaliy Pingin, Aleksey Zherdev, Maksim Kazantsev, Andrey Pinaev, Yuriy Bogdanov
|On-Site Speaker (Planned)
||Viktor Y. Buzunov
RUSAL is in phase 2 of upgrading its Søderberg technology. After a successful upgrade in the Krasnoyarsk smelter, new designs (EcoSøderberg) are now being deployed across the Bratsk, Irkutsk, Novokuznetsk and Volgograd smelters. The EcoSøderberg includes: energy-efficient cathode; point feeding; innovative gas removal system (without burners) where CO-to-CO2 after-burning occurs under the skirt; anode paste/SHP based on eco-pitch (low PAHs); continuous digital control over the environmental performance of cells, including pot-without-seal warnings; new potroom vehicles with automated control; shorter pot tending operations; and two-stage exhaust gas treatment.
The above helped to reduce benzo(a)pyrene emissions by more than 50%. Other emissions reduced to the average of pre-baked technologies, or even lower. Low (compared to conversion to PB) upgrade costs and considerable improvements in cell performance should also be noted. RUSAL continues its efforts to minimize/’reduce to zero’ PAH and other emissions and develop a fully automatic system for environmental control.
||Planned: Light Metals