Now showing items 21-31 of 31

    • Removal of Phosphorus in Metallurgical Silicon by Rare Earth Elements 

      Tang, Kai; Løvvik, Ole Martin; Safarian-Dastjerdi, Jafar; Ma, Xiang; Tangstad, Merete (Journal article; Peer reviewed, 2014)
      Removal of phosphorus in metallurgical silicon is one of the crucial steps for the production of solar grade Si feedstock. The possibility of doping rare earth elements for phosphorus removal has in this work been studied ...
    • Removal of Ti from pig iron by slag refining 

      Windfeldt, Magnus Kyrre (Master thesis, 2020)
      I dette prosjektet undersøkes muligheten for bruk av slaggraffinering for å fjerne titan fra karbonholdig råjern, som en del av ENSUREAL-prosjektet for bærekraftig produksjon av alumina. Slaggen som brukes til raffinering ...
    • Rheological properties of Al2O3–CaO–SiO2 slags 

      Tang, Kai; Eijk, Casper van der; Gouttebroze, Sylvain; Du, Qiang; Safarian, Jafar; Tranell, Gabriella (Peer reviewed; Journal article, 2022)
      The Al2O3–CaO–SiO2 ternary is a basic oxide system relevant for the Pedersen alumina production process and for aluminothermic silicon production with low environmental impact using secondary aluminium and silica raw ...
    • Selective Vacuum Evaporation by the Control of the Chemistry of Gas Phase in Vacuum Refining of Si 

      Hoseinpur Kermani, Arman; Andersson, Stefan; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2021)
      The evaporation of P from liquid Si under vacuum and reduced pressures of H2, He, and Ar was studied to evaluate the feasibility of effective P removal with insignificant Si loss. It was found that the introduction of Ar ...
    • Slag Properties in the Primary Production Process of Mn-Ferroalloys 

      Tangstad, Merete; Bublik, Sergey; Haghdani, Shokouh; Einarsrud, Kristian Etienne; Tang, Kai (Peer reviewed; Journal article, 2021)
      The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such ...
    • Synthesis and Characterization of 12CaO·7Al2O3 Slags: The Effects of Impurities and Atmospheres on the Phase Relations 

      Azof, Fabian Imanasa; Tang, Kai; You, Jinglin; Safarian, Jafar (Journal article; Peer reviewed, 2020)
      Synthesis of crystalline slags of 12CaO·7Al2O3 phase from the corresponding melt compositions in different atmospheric conditions and different purities is investigated. Observations using a thermogravimetry coupled with ...
    • The Kinetics of Boron Transfer in Slag Refining of Silicon 

      Krystad, Egil; Tang, Kai; Tranell, Gabriella (Journal article; Peer reviewed, 2012)
      Slag refining is one of the few metallurgical methods for efficient removal of boron from silicon. In industrial slag refining for production of silicon for photovoltaic applications, the relationship between the slag ...
    • The Use of Eutectic Fe-Si-B Alloy as a Phase Change Material in Thermal Energy Storage Systems 

      Jiao, Jianmeng; Grorud, Bettina; Sindland, Caroline; Safarian, Jafar; Tang, Kai; Sellevoll, Kathrine; Tangstad, Merete (Journal article; Peer reviewed, 2019)
      Fe-26.38Si-9.35B eutectic alloy is proposed as a phase change material (PCM) as it exhibits high latent heat, high thermal conductivity, moderate melting point, and low cost. For successful implementation of it in the ...
    • Thermodynamic Behavior and Mass Transfer Kinetics of Boron Between Ferrosilicon and CaO-SiO2 Slag 

      Krystad, Egil Grøndal; Jakobsson, Lars Klemet; Tang, Kai; Tranell, Gabriella (Journal article; Peer reviewed, 2017)
      Equilibrium distribution and transport kinetics of boron between ferrosilicon and calcium silicate slag were investigated through experimental study. A 50 pct CaO-50 pct SiO2 slag (by weight) was held for different durations ...
    • Toward the recovery of solar silicon from end-of-life PVs by vacuum refining 

      Hoseinpur Kermani, Arman; Tang, Kai; Ulyashin, Alexander; Palitzch, Wolfram; Safarian, Jafar (Peer reviewed; Journal article, 2023)
      Considering the boom of Si solar cell installation, it is necessary to establish a process for recycling of Si from End-of-life photovoltaics (PVs). Silicon in the PVs is synthetically doped and coated by various elements ...
    • The Utilization of Bauxite Residue with a Calcite-Rich Bauxite Ore in the Pedersen Process for Iron and Alumina Extraction 

      Lazou, Adamantia; Eijk, Casper van der; Tang, Kai; Balomenos, Efthymios; Kolbeinsen, Leiv; Safarian, Jafar (Peer reviewed; Journal article, 2021)
      Metallurgical grade alumina is produced worldwide through the well-known Bayer process, which unavoidably generates bauxite residue (BR, also known as red mud) in almost equal amounts to alumina. This study aims the ...