Browsing NTNU Open by Author "Olsen, Jan Erik"

Now showing items 1-8 of 8

    • A multiscale numerical approach of the dripping slag in the coke bed zone of a pilot scale Si-Mn furnace 

      Letout, Sebastien Romain; Ratvik, Arne Petter; Tangstad, Merete; Johansen, Stein Tore; Olsen, Jan Erik (Chapter, 2017)
      The Si-Mn alloy process production in submerged arc furnaces (SAF) is investigated. The aim of the studies currently in progress is an enhancement of the knowledge about the key reactions and the mass transport phenomenon ...

    • CFD Study on Continuous Tapping of Silicon 

      Olsen, Jan Erik; Ksiazek, Michal Tomasz; Tangstad, Merete (Peer reviewed; Journal article, 2022)
      Silicon is mostly produced in rotating submerged arc furnaces with continuous tapping of metal. The burden is often dense due to condensates. Thus, furnace gas does not escape easily to the top of the burden and some gas ...

    • Conceptual Tapping Model of Mn-Ferroalloy Furnaces 

      Tangstad, Merete; Olsen, Jan Erik; Ringdalen, Eli; Ksiazek, Michal Tomasz; Reynolds, Quinn; Steenkamp, Joalet (Peer reviewed; Journal article, 2022)
      The tapping process of submerged arc furnaces, like the Mn-ferroalloy production process, is when you drain the liquid metal and slag from the furnace. The optimal tapping process is when slag and metal is drained from the ...

    • Evaluation of Gas and Oil Dispersion during Subsea Blowouts 

      Bakli, Mikkel (Master thesis, 2014)
      The global demand for hydrocarbons is high and is also believed to be high in the future. Much of today s oil and gas exploration is carried out offshore and consequently, there is a risk if oil and gas blowouts at the ...

    • Lab-Scale Physical Model Experiments to Understand the Effect of Particle Bed on Tapping Flow Rates 

      Loomba, Varun; Pourfallah, Hesam; Olsen, Jan Erik; Einarsrud, Kristian Etienne (Peer reviewed; Journal article, 2022)
      Optimal tapping of metallurgical furnaces is required for efficient furnace operation. Improper tapping can lead to metal and slag accumulation in the furnace thereby reducing the process efficiency. The mass flow rate of ...

    • Mechanisms and Kinetics of Boron Removal from Silicon by Humidified Hydrogen 

      Safarian, Jafar; Tang, Kai; Olsen, Jan Erik; Andersson, Stefan; Tranell, Gabriella; Hildal, Kjetil (Journal article; Peer reviewed, 2016)
      The removal of boron from silicon by top blowing of humidified hydrogen has been studied in the present work through experimental work, thermodynamic calculations, computational fluid dynamic modeling, and quantum chemistry ...

    • Metal and Slag Extraction from Different Zones of a Submerged Arc Furnace with Non-uniform Porous Bed Using CFD 

      Loomba, Varun; Olsen, Jan Erik; Einarsrud, Kristian Etienne (Peer reviewed; Journal article, 2022)
      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 ...

    • A Review of Ferroalloy Tapping Models 

      Bublik, Sergey; Olsen, Jan Erik; Loomba, Varun; Reynolds, Quinn Gareth; Einarsrud, Kristian Etienne (Peer reviewed; Journal article, 2021)
      Tapping is an important furnace operation in the ferroalloy industry and poses a number of complex and coupled challenges of both practical and economical importance. Owing to the hazardous high-temperature conditions ...