About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Reduction Technology
|
Presentation Title |
New Phase in Upgrade of Søderberg Technology at RUSAL’s Smelters |
Author(s) |
Viktor Y. Buzunov, Viktor Mann, Vitaliy Pingin, Aleksey Zherdev, Maksim Kazantsev, Andrey Pinaev, Yuriy Bogdanov |
On-Site Speaker (Planned) |
Viktor Y. Buzunov |
Abstract Scope |
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. |
Proceedings Inclusion? |
Planned: Light Metals |