Blar i NTNU Open på forfatter "Ratvik, Arne Petter"
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The Effect of Varying Mixing Temperatures and Baking Level on the Quality of Pilot Scale Anodes - A Factorial Design Analysis
Sommerseth, Camilla; Thorne, Rebecca Jayne; Ratvik, Arne Petter; Sandnes, Espen; Linga, Hogne; Lossius, Lorentz Petter; Svensson, Ann Mari (Journal article; Peer reviewed, 2017)Identifying optimum anode baking level and mixing temperature are important when producing high quality anodes. The effect of varying mixing temperature and baking level were investigated in terms of the resulting apparent ... -
Thermal Insulation Materials in Aluminum Electrolysis Cells
Luneng, Raymond (Doctoral theses at NTNU;2020:112, Doctoral thesis, 2020)Aluminum is produced by an energy intensive process known as the Hall-Héroult process, which has been developed extensively since it was first invented in 1886. Recent trends in the aluminum industry has been to strive for ... -
A Thermodynamic Assessment of the Chemical Durability of Refractory Lining in Anode Baking Furnaces
Grande, Tor; Brandvik, Trond; Ratvik, Arne Petter; Wang, Zhaohui (Journal article, 2016) -
Thermogravimetric Analysis of Thermal Insulating Materials Exposed to Sodium Vapor
Luneng, Raymond; Wang, Zhaohui; Ratvik, Arne Petter; Grande, Tor (Journal article; Peer reviewed, 2019)The bottom thermal insulating layer in aluminum electrolysis cells is normally well protected from chemical attacks by a refractory layer. However, autopsies of spent cathode lining have shown that sodium vapor may reach ... -
Understanding Anode Overpotential
Thorne, Rebecca Jayne; Sommerseth, Camilla; Svensson, Ann Mari; Sandnes, Espen; Lossius, Lorentz Petter; Linga, Hogne; Ratvik, Arne Petter (Journal article, 2014)In aluminium electrolysis cells the anodic process is associated with a substantial overpotential. Industrial carbon anodes are produced from a blend of coke materials, but the effect of coke type on anodic overpotential ... -
Vanadium Speciation in Petroleum Cokes for Anodes used in Aluminium Electrolysis
Jahrsengene, Gøril; Wells, Hannah C.; Sommerseth, Camilla; Ratvik, Arne Petter; Lossius, Lorentz Petter; Haverkamp, Richard G.; Svensson, Ann Mari (Journal article, 2017)The expanding aluminium industry is facing challenges with availability in raw materials. A wider range of petroleum cokes are being taken into use, blurring the border between anode grade and fuel grade coke in anode ... -
Wear of carbon cathode lining in aluminium electrolysis cell: The effect of rotation speed in laboratory test cell
Nobakhtghalati, Saeid (Master thesis, 2014)The aluminium smelters are continually trying to increase their production either by designing high amperage cells or increasing the amperage on available cell designs. The service life for aluminium reduction cells is ... -
Wetting of Carbon Cathodes by Molten Electrolyte and Aluminium
Senanu, Samuel; Ratvik, Arne Petter; Wang, Zhaohui; Grande, Tor (Journal article; Peer reviewed, 2021)The extent to which the carbon cathode is wetted by molten electrolyte or molten aluminium metal is important for understanding the cathode wear during aluminium electrolysis. The present paper reports on a laboratory study ...