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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Hydro’s New Karmøy Technology Pilot: Start-up and Early Operation
Author(s) Pierre Reny, Martin Segatz, Haakon Haakonsen, Håvard Gikling, Mona Assadian, Jan Frode Høines, Espen Kvilhaug, Asgeir Bardal, Erik Solbu
On-Site Speaker (Planned) Pierre Reny
Abstract Scope After the successful development and operation of the 6 HAL4e test cells at its Årdal research Center starting in 2008, Hydro decided in 2015 to build an industrial pilot plant. The site chosen is on Karmøy island in Norway, on the very same, cleaned site where the Karmøy Søderberg plant once operated. The 60-cells plant is called the Karmøy Technology Pilot, or KTP for short. The HAL4e cell development program’s ambition included step improvements in energy consumption and environmental friendliness. These innovations span many aspects of cell technology, environment protection, infrastructure and operation, like low cell resistivity, PAH-free linings, low energy cell preheat and start-up, low specific energy consumption, low anode effect rate and duration, low fluoride emissions, low CO2 emissions, automated cell operations and many more. This paper summarizes the preparation and start-up activities and also presents operating results of the first two years of operation.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Process Technology,


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Coupled SPH-DEM to Simulate the Injection of a Powder into a Liquid with Heat Transfer and Phase Change
Dissolution Characteristics and Concentration Measurements of Alumina in Cryolite Melts
Electrochemical Reduction and Dissolution of Aluminium in a Thin-layer Refinery Process
Experience with Lengthy Pot Hibernation at Alcoa Baie-Comeau
Gas Treatment in the GE Pot Integrated ABART Modules (PIA)
Hydro’s New Karmøy Technology Pilot: Start-up and Early Operation
Improvement to Alpsys Instability and Alumina Feeding Control
Individual Anode Current Monitoring during Aluminum Reduction Cell Power Reduction
Influence of Additives on Alumina Dissolution in Superheated Cryolite Melts
Instant Monitoring of Aluminum Chemistry in Cells Using a Portable Liquid Metal Analyzer
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Latest Developments in GTC Design to Reduce Fluoride Emissions
Low and High Voltage PFC Slope Coefficient Monitoring during Pot Start-up
Mass Transport by Waves: Bath-metal Interface Deformation, Rafts Collision and Physical Model
Modeling Anode Current Pickup After Setting
New Phase in Upgrade of Søderberg Technology at RUSAL’s Smelters
On Gaseous Emissions during Alumina Feeding
On the Feasibility of Using Low-melting Bath to Accommodate Inert Anodes in Aluminium Electrolysis Cells
Process and Environmental Aspects of Applying Unshaped Carbon Materials for Cell Lining Purposes
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