Blar i NTNU Open på forfatter "Kowalczuk, Przemyslaw"
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Classification of flotation frothers
Drzymala, Jan; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2018)In this paper, a scheme of flotation frothers classification is presented. The scheme first indicates the physical system in which a frother is present and four of them i.e., pure state, aqueous solution, aqueous solution/gas ... -
Critical synergistic concentration of binary surfactant mixtures
Zawala, Jan; Wiertel-Pochopien, Agata; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2020) -
Effect of ultrasound pre-treatment on carbonaceous copper-bearing shale flotation
Kruszelnicki, Mateusz; Hassanzadeh, Ahmad; Legawiec, Krzysztof; Polowczyk, Izabela; Kowalczuk, Przemyslaw (Peer reviewed; Journal article, 2022)Although numerous studies have been implemented on identifying the impact of acoustic waves on mineral beneficiation, its fundamental aspects remain unclear in the literature. The present work, for the first time, ... -
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 ... -
Heterocoagulation of shale particles and bubbles in the presence of ionic surfactants
Polowczyk, Izabela; Kruszelnicki, Mateusz; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2018)Adsorption of surfactants is one of the important feature governing interactions between particulate matters. When interactions occur between two particulates, which differ from each other, heterocoagulation takes place. ... -
Influence of operating parameters on nanobubble-assisted flotation of graphite
Nazari, Sabereh; Zhou, Shaoqi; Hassanzadeh, Ahmad; Li, Jinlong; He, Yaqun; Bu, Xiangning; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2022) -
Kinetics of froth flotation of naturally hydrophobic solids with different shapes
Szczerkowska, Sabina; Wiertel-Pochopien, Agata; Zawala, Jan; Larsen, Erik; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2018)In this paper, kinetics of flotation of naturally hydrophobic polystyrene platelets with the same roundness, solidity, surface roughness and hydrophobicity but different basic shapes i.e. circular, square and triangular, ... -
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 ... -
Oil agglomeration of metal-bearing shale in the presence of mixed cationic-anionic surfactants
Polowczyk, Izabela; Kruszelnicki, Mateusz; Kowalczuk, Przemyslaw (Journal article; Peer reviewed, 2018)This paper reports oil agglomeration of fine metal-bearing shale particles in the presence of cationic (dodecylamine hydrochloride) and anionic (sodium dodecyl sulfate) surfactants and their mixture. The experimental results ... -
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 ... -
Recent developments in generation, detection and application of nanobubbles in flotation
Nazari, Sabereh; Hassanzadeh, Ahmad; He, Yaqun; Khoshdast, Hamid; Kowalczuk, Przemyslaw (Peer reviewed; Journal article, 2022)This paper reviews recent developments in the fundamental understating of ultrafine (nano) bubbles (NBs) and presents technological advances and reagent types used for their generation in flotation. The generation of NBs ... -
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. ...