Browsing NTNU Open by Author "Aasly, Kurt"
Now showing items 21-37 of 37
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Geometallurgical Modelling of the Stjernøya Nepheline Syenite Mine
Silva, Camilo Andrés Mena (Doctoral theses at NTNU;2019:385, Doctoral thesis, 2019)The present study applies the concept of geometallurgy to an industrial mineral case study. Geometallurgy is a holistic discipline conveying different aspects of geology, mineral processing and mining together to improve ... -
Gravity and magnetic separation of sulphides from the Akselberg calcite marble
Larsen, Maylen (Master thesis, 2014)Calcite marble from Brønnøy Kalk AS’ Akselberg deposit is raw material for production of Ground Calcium Carbonate (GCC) used as filler and coating pigment in paper industry. One of the most important parameters for GCC ... -
Iron and alumina recovery from bauxite residue through hydrogen reduction
Kar, Manish Kumar (Doctoral theses at NTNU;2024:183, Doctoral thesis, 2024)The study primarily centers on agglomerating bauxite residue with calcite pellets and reducing in the presence of hydrogen. This process aims to reduce iron oxide complexes while simultaneously forming leachable calcium ... -
Marine minerals' role in future holistic mineral resource management
Ellefmo, Steinar Løve; Aberle-Malzahn, Nicole; Hagspiel, Verena; Ingulstad, Mats; Aasly, Kurt (Journal article; Peer reviewed, 2022) -
MarMine cruise report - Arctic Mid-Ocean Ridge 15.08.2016 - 05.09.2016
Ludvigsen, Martin; Aasly, Kurt; Ellefmo, Steinar Løve; Hilário, Ana; Ramirez-Llodra, Eva; Søreide, Fredrik Xander; Falcon-Suarez, Ismael; Juliani, Cyril Jerome; Kieswetter, Amanda; Lim, Anna; Christian, Malmquist; Nornes, Stein Melvær; Reimers, Hauke; Paulsen, Emil; Sture, Øystein (NTNU Cruise reports;2016-1, Research report, 2016) -
Mineral characterization as a tool in the implementation of geometallurgy into industrial mineral mining
Lang, Aleksandra; Aasly, Kurt; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Industrial minerals play an important role in the Norwegian mining industry. The presented research focuses on defining marble deposit variability in order to evaluate parameters that can potentially be related to downstream ... -
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. ... -
Properties and behavior of quartz for the silicon process
Aasly, Kurt (Doktoravhandlinger ved NTNU, 1503-8181; 2008:236, Doctoral thesis, 2008) -
Pyrrhotite in concrete aggregate. Introduction to mechanism, damage potential and ongoing research
Lindstad, Hallvard; Lindgård, Jan; Pedersen, Bård Magne; Wigum, Børge Johannes; Aasly, Kurt; Ullnæss, Inger Lise; Oberhardt, Nikolas; De Weerdt, Klaartje (Chapter, 2022)Pyrrhotite is an iron sulfide which when present in concrete aggregate may lead to expansive reactions, cracks and finally disintegration of the concrete. This potential risk when using aggregates containing sulfides in ... -
QUANTITATIVE MINERALOGY OF HIGH PURITY QUARTZ, CASE OF SPRUCE PINE, NORTH CAROLINA
Manyara, Saimon Gerald (Master thesis, 2014)High Purity Quartz is one of the important minerals in the electronic industry today, but production of extreme high purity quartz requires a detailed knowledge of the resource from mine to the processing plant. To achieve ... -
Recent Advancements in Metallurgical Processing of Marine Minerals
Ochromowicz, Katarzyna; Aasly, Kurt; Kowalczuk, Przemyslaw (Peer reviewed; Journal article, 2021)Polymetallic manganese nodules (PMN), cobalt-rich manganese crusts (CRC) and seafloor massive sulfides (SMS) have been identified as important resources of economically valuable metals and critical raw materials. The ... -
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. ... -
Sjeldne jordarter i nefelinsyenittpegmatitter i Vevja, Tvedalen
Øksnes, Vilde Lund (Master thesis, 2023)Kritiske råmaterialer som blant annet sjeldne jordarter og niob er viktige for moderne teknologi og det grønne skiftet. Nefelinsyenittpegmatitter inneholder disse elementene. Tidligere er det gjennomført arbeid (Øksnes ... -
The effect of graphite filler in sample preparation for automated mineralogy – a preliminary study
Røisi, Ida; Aasly, Kurt (Journal article; Peer reviewed, 2018)Mineral particulate sample material is often prepared as polished sections for SEM based automated quantitative mineralogical analysis. A common practice is to mix ultra-pure graphite with sample material to avoid segregation ... -
Trace Element Study of Quartz from Nasafjell
Seljeset, Karsten (Master thesis, 2018)This thesis is written i cooperation with Elkem as a part of the High-Temp Quartz project, which is a joint effort between Elkem, Sintef and NTNU, with a goal to achieve a better understanding of quartz behaviour during ...