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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title AP12 Low Energy Technology at ALRO Smelter
Author(s) Marian Cilianu, Bertrand Allano, Gheorghe Dobra, Ion Mihaescu, Claude Ritter, Andre Auge, Yves Caratini
On-Site Speaker (Planned) Marian Cilianu
Abstract Scope Electricity cost is the main differentiator of the competitive structure of an aluminum smelter. Over the last few years, ALRO Group, the biggest industrial power consumer in Romania, delivered ambitious projects to lower specific energy consumption. To reach the next level, in 2018, ALRO mandated Rio Tinto Aluminium Pechiney (RTAP) for the supply of an AP12 Low Energy technology. To guarantee smooth technology transfer and achieve step change performance the AP Technology™ standard “cell development cycle” approach has been used. ALRO and RTAP worked together as a team to execute specific activities such as measurement campaign, modelling, risk analysis, readiness assessment, onsite and remote support, data analytics, go-no go, etc. This article presents this project that achieved step change reduction in specific energy consumption along with some supporting activities and tools.
Proceedings Inclusion? Planned: Light Metals


AP12 Low Energy Technology at ALRO Smelter
Carbon Dust - Its Short-Term Influence on Potroom Operations
Characterisation of Powders-precondition for Plant Engineering
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
Introductory Comments: Aluminum Reduction Technology
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
Superconductor Busbars – High Benefits for Aluminium Plants

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