Blar i NTNU Open på forfatter "Rosenkilde, Christian"
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A method for comparing the HF formation potential of aluminas with different water contents
Sommerseth, Camilla; Osen, Karen Sende; Rosenkilde, Christian; Meyer, Astrid J.; Kristiansen, Linda; Aarhaug, Thor Anders (Chapter, 2012)In the aluminium industry today, smelters often have to rely on more than one alumina supplier. This creates diversity in the properties of smelter grade alumina (SGA). A method has been developed to compare the HF formation ... -
CO2-Free Aluminium Production: Production of AlCl3 by Carbochlorination of Bauxite
Grønvold, Amalie (Master thesis, 2021)Den kommersielle produksjonen av primær Al er avhengig av to energiintensive prosesser fra slutten av 1800-tallet: Bayer og Hall-Héroult prosessen. Store direkte CO2-utslipp er knyttet til sistnevnte, og med oppmerksomheten ... -
Dissolution Characteristics and Concentration Measurements of Alumina in Cryolite Melts
Bracamonte, Luis Carlos Izaguirre; Aulie, Vegard; Rosenkilde, Christian; Einarsrud, Kristian Etienne; Sandnes, Espen (Peer reviewed; Journal article, 2021)Alumina dissolution is one of the most important processes in the Hall-Héroult process. In this work, video recording using a high-speed camera and a see-through cell and electromotive force (emf) based alumina sensor ... -
Electrochemical processes in the AlCl3-urea ionic liquid analogue
Nguyen, Theresa (Master thesis, 2019)Hvert år produseres det nesten 70 millioner tonn aluminium på verdensbasis som blir anvendt i ulike industrier, blant annet transport-, elektronikk- og emballasjeindustrien. Materialet er høyt etterspurt grunnet sine ... -
Electrochemical Study of Aluminum Chloride in Basic Chloride Melts with Oxide Additions
Bjørlo, Eirik (Master thesis, 2020)Hall-Héroult prosessen har dominert fremstillingen av aluminium i over et århundre. Flere alternative prosesser har blitt foreslått, hvorav “Alcoa Smelting Process” som ble utviklet på 70-tallet anses for å være den eneste ... -
HF Formation Upon Addition of Different Industrial Aluminas to Cryolitic Baths
Sommerseth, Camilla (Master thesis, 2011)The aluminium smelter at Hydro Sunndal has experienced problems with an unexpected increased loss of AlF3 from the electrolyte when using a certain quality of alumina. One hypothesis considered was that the fluoride loss ... -
Kinetics of Alumina Carbochlorination
Melingen, Kristiane (Master thesis, 2020)Kinetikken av varierende kvaliteter av alumina, Al2O3, har blitt undersøkt i reaksjon med CO og Cl2. En reaktor har blitt designet og produsert av denne grunn. Temperatur og gasstrøm har blitt variert for smelter grade ... -
Oxide Sensor Measurements and Simultaneous Optical Observations During Dissolution of Alumina in Cryolite Melt
Bracamonte, Luis Carlos Izaguirre; Einarsrud, Kristian Etienne; Rosenkilde, Christian; Sandnes, Espen (Journal article; Peer reviewed, 2022) -
Recovery of Lithium and Removal of Fluoride from Washwater in Lithium-ion Batteries Recycling Stream
Sinambela, Tryanti Melinda (Master thesis, 2021)As the adoption of electric vehicles (EV) accelerates year after year, there is an urgent need for commercially viable solutions to recover the raw materials that make up the Lithium-Ion Batteries (LIBs). As well as lithium, ... -
Recycling Lithium from Spent Electric Vehicle (EV) Li-ion Batteries (LIBs) – A Unified Process
Saleem, Usman (Master thesis, 2022)Lithium-ion-batterier (LIB) er effektive energilagringsenheter og er i bunnen av gjeldende overganger som skjer mot elektriske kjøretøy fra biler med forbrenningsmotorer. Denne overgangen kan redusere klimagassutslippene, ... -
Selective Recovery of Lithium from Lithium-Ion Batteries (LIBs) of Electrical Vehicles (EVs)
Laugen, Stina (Master thesis, 2021)Lithium-ion batteries (LIBs) dominate in the electric vehicle (EV) market due to their excellent performance. The recent growth is primarily driven by the electrification of transportation. Despite a recession in overall ... -
Study of Solvent Extraction for Metal Recovery during Lithium-Ion Batteries (LIBs) Recycling Process
Zahraie, Neshat (Master thesis, 2021)Nowadays, the demand for electric vehicles (EVs) is rising, leading to an increase in the production of lithium-ion batteries (LIBs) since these batteries are used in EVs. A large number of Ni, Mn, Co, and Li resources are ... -
The Rate of HF Formation During Addition of Aluminas to Cryolite Melts
Fellicia, Dian Mughni (Master thesis, 2012)One of the biggest contributors of the gas emission in smelting process of aluminium is fluoride. Major contributor to the fluoride emissions is the hydrogen fluoride (HF) gas. HF gas is formed when fluoro compounds from ...