Browsing NTNU Open by Author "Kar, Manish Kumar"
Now showing items 1-6 of 6
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Comparative kinetics study of different iron-containing pellets with hydrogen at isothermal conditions
Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar (Peer reviewed; Journal article, 2023)Using hydrogen to produce iron is a promising way for the steel industry to achieve the goal of carbon neutrality. The reducibility of iron-bearing oxides by hydrogen significantly impacts the productivity and energy ... -
Comparative Study of Hydrogen Reduction of Bauxite Residue-Calcium Sintered and Self-Hardened Pellets Followed by Magnetic Separation for Iron Recovery
Kar, Manish Kumar; Hassanzadeh, Ahmad; Eijk, Casper van der; Safarian, Jafar (Journal article; Peer reviewed, 2023)To minimize the carbon footprint in the industrial valourization of bauxite residue, hydrogen was used as a reducing agent. The current study experimentally investigated hydrogen reduction of bauxite residue-CaO sintered ... -
An Investigation on Reduction of Calcium Added Bauxite Residue Pellets by Hydrogen and Iron Recovery through Physical Separation Methods
Hassanzadeh, Ahmad; Kar, Manish Kumar; Safarian, Jafar; Kowalczuk, Przemyslaw Boguslaw (Peer reviewed; Journal article, 2023)This study investigates the properties of H2-reduced calcium-added bauxite residue, self-hardened pellets, and the feasibility of iron recovery through electrostatic and magnetic separation methods. The oxide pellets are ... -
An Invitation on Characterization of H<inf>2</inf>-Reduced Bauxite Residue and Recovering Iron through Wet Magnetic Separation Processes
Hassanzadeh, Ahmad; Pilla, Ganesh; Kar, Manish Kumar; Kowalczuk, Przemyslaw Boguslaw (Peer reviewed; Journal article, 2023)Recovering iron from the bauxite residue (BR) is one of the long-standing challenges in the mining industry. However, there is a substantial lack of information in the literature regarding sample properties and iron ... -
Kinetics Study on the Hydrogen Reduction of Bauxite Residue-Calcite Sintered Pellets at Elevated Temperature
Kar, Manish Kumar; Eijk, Casper van der; Safarian, Jafar (Peer reviewed; Journal article, 2023)In this study, the isothermal reduction of bauxite residue-calcite sintered pellets by hydrogen at elevated temperatures and different gas flow rates was investigated. A thermogravimetric technique was applied to study the ... -
Leaching of Hydrogen Pre-Reduced Mn ore to Produce MnO2
Shakya, Utsav; Knive, Haldor Andersen (Bachelor thesis, 2023)HAlMan project team har som mål å utvikle en bærekraftig metode for produksjon av mangandioksid (MnO2). De jobber også med produksjon av manganholdige legeringer for stål og aluminium i tillegg til å utforske ekstraksjon ...