Browsing NTNU Open by Author "Kleiv, Rolf Arne"
Now showing items 1-16 of 16
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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) -
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 ... -
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 ...