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Browsing NTNU Open by Author "Kleiv, Rolf Arne"

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Now showing items 1-17 of 17

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    • Application of a Rapid and Simple UV-spectrophotometric method for the study of desorption of esterquat collectors in Tailings-Seawater Systems 

      Ibragimova, Olga; Kleiv, Rolf Arne (Journal article; Peer reviewed, 2018)
      The growing demand for mineral resources followed by the steady increase in mining activity result in the need for the disposal of large amount of tailings. Submarine tailings placements (STPs) is a viable option to ...
    • Development of an Ultraviolet-Spectrophotometric Method for Analysis of Esterquat-Containing Flotation Collectors in Aqueous Solutions 

      Ibragimova, Olga; Kleiv, Rolf Arne (Journal article; Peer reviewed, 2018)
      In this study, a rapid and simple ultraviolet‐spectrophotometric method was developed and validated for the quantitative determination of esterquat‐containing flotation collector FLOT 2015 in aqueous solutions. This method ...
    • Development Towards a New Test Procedure for Flotation at Brønnøy Kalk 

      Havskjold, Håkon Engum (Master thesis, 2016)
      Brønnøy Kalk AS is a mining company established in 1997 and is localized in Brønnøy, Norway. Approximately 2 million tonnes of ground calcium carbonate (GCC) raw material is mined annually. No processing of the marble is ...
    • Dissolution and carbonation of mechanically activated olivine-Investigating CO2 sequestration possibilities 

      Haug, Tove Anette (Doctoral Theses at NTNU, 1503-8181; 2010:5, Doctoral thesis, 2010)
      Mineral carbonation used for CO2 sequestration faces three main challenges: increasing the overall carbonation rate, handle large amounts of feedstock and products, and developing a practical process with commercially ...
    • Efficient extraction of copper and zinc from seafloor massive sulphide rock samples from the Loki's Castle area at the Arctic Mid-Ocean Ridge 

      Kowalczuk, Przemyslaw B.; Snook, Ben; Kleiv, Rolf Arne; Aasly, Kurt (Journal article; Peer reviewed, 2018)
      Seafloor massive sulphide (SMS) deposits have been identified as important marine metal resources for the future. However, literature on the recovery/extraction of metals from SMS is currently limited, and to date, no ...
    • Galvanic Leaching of Seafloor Massive Sulphides Using MnO2 in H2SO4-NaCl Media 

      Kowalczuk, Przemyslaw; Dan, Oliric Manaig; Drivenes, Kristian; Snook, Ben; Aasly, Kurt; Kleiv, Rolf Arne (Journal article; Peer reviewed, 2018)
      This paper reports the leaching of seafloor massive sulphides (SMS) from the Loki’s Castle area at the Arctic Mid-Ocean Ridge in sulphuric acid with manganese dioxide and sodium chloride. The results presented are of various ...
    • Guidelines and best available techniques for submarine tailings disposal in Norwegian fjords: Recommendations from the NYKOS project 

      Ramirez-Llodra, Eva; Andersen, Guri Sogn; Bekkby, Trine; Brooks, Steven; Escudero-Oñate, Carlos; Gundersen, Hege; Schaanning, Morten; Trannum, Hilde Cecilie; Yakushev, Evgeniy; Baeten, Nicole; Lepland, Aivo; Ibragimova, Olga; Kleiv, Rolf Arne; Nepstad, Raymond; Muñoz, María; Høgaas, Helge; Sandøy, Roar (NIVA-rapport;, Research report, 2019)
      The NYKOS project aimed at addressing some of the main knowledge gaps on the environmental impacts of submarine tailing disposal (STD) to facilitate the development of techniques, practices and management measures that ...
    • Mineralogical and textural characterization for increased iron oxide recovery. Exemplified on the Storforshei iron formation 

      Tøgersen, Marte Kristine (Doctoral theses at NTNU;2019:309, Doctoral thesis, 2019)
      Process mineralogy is increasingly becoming an important part of quality control in mining operations, and chemical assays are not sufficient for predicting metallurgical performance of complex ore deposits. Knowledge of ...
    • Mineralogiens betydning for materialbalansen i ulike produktstrømmer ved prosessanlegget til Rana Gruber 

      Johnsrud, Annicka (Master thesis, 2018)
      er enda ikke skrevet
    • Mineralogy and texture of the Storforshei iron formation, and their effect on grindability 

      Tøgersen, Marte Kristine; Kleiv, Rolf Arne; Ellefmo, Steinar Løve; Aasly, Kurt (Journal article; Peer reviewed, 2018)
      Investigating how ore mineralogy and texture affect the recovery from the processing plant is important for any mining operation. The results will assist in production planning and optimising the utilisation of a deposit. ...
    • Non-HF collectorless flotation of quartz 

      Larsen, Erik; Kowalczuk, Przemyslaw; Kleiv, Rolf Arne (Journal article; Peer reviewed, 2019)
      Pure mineral flotation experiments have demonstrated that quartz can be floated without a collector, in solutions containing an inorganic acid (e.g. H2SO4) and sodium fluoride (NaF). Excellent quartz recoveries, similar ...
    • Optimal utilisation of unbound crushed aggregates for road construction 

      Fladvad, Marit (Doctoral thesis, 2020)
      Aggregates are construction materials produced from non-renewable rock resources. Because high-quality aggregate resources have limited availability, utilisation of aggregates should be considered carefully to prevent ...
    • Production of mechanically activated rock flour fertilizer by high intensive ultrafine grinding 

      Kleiv, Rolf Arne; Thornhill, Maria (Peer reviewed; Journal article, 2007)
    • Separasjon av Tromsdalskalken 

      Hauger, Victoria Natasha (Master thesis, 2015)
      Oppgaven skrives for Franzefoss Miljøkalk. Franzefoss Miljøkalk er en kalksteinsprodusent og har brudd på Hamar, Hole og i Ballangen. Oppgaven er båndlagt i tre år.
    • Simuleringsforsøk av primærmøllekretsene på Titania AS 

      Tro, Mari Kristin (Master thesis, 2017)
      «Simuleringsforsøk av primærmøllekretsene på Titania AS» er skrevet av Mari Kristin Tro. Den er skrevet på Institutt for geologi og bergteknikk ved Norges teknisknaturvitenskapelige universitet i Trondheim våren 2017. Hensikten ...
    • Simultaneous leaching of seafloor massive sulfides and polymetallic nodules 

      Kowalczuk, Przemyslaw; Bouzahzah, Hassan; Kleiv, Rolf Arne; Aasly, Kurt (Journal article; Peer reviewed, 2019)
      Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. ...
    • Testprogram for overskudds- og restmasser som planlegges brukt til tildekking av forurensede sedimenter 

      Eggen, Trine; Myhre, Lars Petter; Kleiv, Rolf Arne; Amundsen, Carl; Thornhill, Maria; Kitterød, N. O.; Nævdal, Atle; Westerlund, Stig; Sørheim, Roald (Bioforsk Rapport;, Research report, 2006)
      Det er utarbeidet et testprogram for å vurdere egnethet av overskudds- og restmasser for bruk til tildekking av forurensede sedimenter. Testprogrammet vurderer materialets egnethet på generelt grunnlag, uavhengig av en ...

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