Blar i NTNU Open på forfatter "Bjørnstad, Erlend Lunnan"
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Mass Transfer Coefficients and Bubble Sizes in Oxidative Ladle Refining of Silicon
Bjørnstad, Erlend Lunnan (Master thesis, 2016)The mass transfer of [Al] and [Ca] between three synthetic SiO_{2}-CaO-Al_{2}O_{3} slags, and 8N silicon, has been investigated to find the overall mass transfer coefficient k_{i,t} for the individual species. Samples were ... -
Mass Transfer of Al and Ca Between Silicon and Synthetic SiO2-CaO-Al2O3 Slags
Bjørnstad, Erlend Lunnan; Tranell, Gabriella (Chapter, 2017)The mass transfer of Al and Ca between silicon and synthetic SiO2 −CaO − Al2O3 slags of varying composition has been investigated, using different experimental set-ups. Samples were kept at 1600◦C, varying the holding times ... -
Nucleation of SiO2-CaO-Al2O3 Slag in Oxidative Ladle Refining of Metallurgical Grade Silicon
Bjørnstad, Erlend Lunnan; Tranell, Gabriella (Peer reviewed; Journal article, 2021)Oxidative ladle refining (OLR) is the most used refining method in industrial production of metallurgical grade silicon. OLR is performed by purging the liquid alloy with oxygen-enhanced air at 1823 K to 1873 K, reacting ... -
Oxidative Ladle Refining of Metallurgical Grade Silicon: Refining of Ca and Al Impurities
Bjørnstad, Erlend Lunnan (Doctoral theses at NTNU;2021:277, Doctoral thesis, 2021)English summary Metallurgical grade silicon (MG-Si) is used as an alloying agent, raw material, or as a precursor compound, in the production of aluminum alloys, silicones, photovoltaics, and electronics. Access to ... -
Oxidative Refining of Metallurgical Grade Silicon: Lab-Scale Measurements on the Overarching Refining Behavior of Ca and Al
Bjørnstad, Erlend Lunnan; Jung, In-Ho; Van Ende, Marie-Aline; Tranell, Gabriella (Peer reviewed; Journal article, 2022)Oxidative ladle refining (OLR) is the most widely used refining process for removal of dissolved Ca and Al in the industrial production of metallurgical grade silicon (MG-Si). Refining occurs by purging the silicon alloy ...