Browsing SINTEF Open by Author "Kolbeinsen, Leiv"
Now showing items 1-6 of 6
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C–O–H2 ternary diagram for evaluation of carbon activity in CH4-containing gas mixtures
Ribeiro, T.R.; Ferreira Neto, Neto; Takano, C.; Poço, J.G.R.; Kolbeinsen, Leiv; Ringdalen, Eli (Peer reviewed; Journal article, 2021)The C–O–H2 ternary diagram is presented to characterize the carbon activity in equilibrium with gas mixtures containing CH4, CO, CO2, H2O, and H2 at different temperatures and pressures. The three reactions for carbon ... -
Kinetics Analysis of Steam Reforming of Methane on Sponge Iron
Ramos Ribeiro, Tiago; Ferreira Neto, João Batista; Rocha Poço, João Guilherme; Takano, Cyro; Kolbeinsen, Leiv; Ringdalen, Eli (Peer reviewed; Journal article, 2022)The kinetics of steam reforming of methane catalyzed by sponge iron was studied at temperatures between 875°C and 1050°C. Results shows that sponge iron acts as a catalyst and methane conversion is increased in higher ... -
On the Direct Reduction Phenomena of Bauxite Ore Using H2 Gas in a Fixed Bed Reactor
Lazou, Adamantia; Eijk, Casper van der; Balomenos, Efthymios; Kolbeinsen, Leiv; Safarian, Jafar (Peer reviewed; Journal article, 2020)The Bayer Process is the dominant industrial method to produce alumina from bauxite ore. Due to the generation of large amounts of Bauxite Residue (red mud), an alternative method, called the Pedersen Process, is of our ... -
Road-map for gas in the Norwegian metallurgical industry: greater value creation and reduced emissions
Dalaker, Halvor; Ringdalen, Eli; Kolbeinsen, Leiv; Mårdalen, Jostein (Report, 2017-08-28) -
Steam Reforming of Methane on Sponge Iron: Influence of GasComposition on Reaction Rate
Ramos Ribeiro, Tiago; Neto, João Batista Ferreira; Poco, Joao G R; Takano, Cyro; Kolbeinsen, Leiv; Ringdalen, Eli (Peer reviewed; Journal article, 2020)Direct Reduction processes use gases (CO and H2) for iron reduction and production of sponge iron or direct reduced iron (DRI). The generation of this gas occurs through methane reforming, which can be done in a reformer ... -
The Utilization of Bauxite Residue with a Calcite-Rich Bauxite Ore in the Pedersen Process for Iron and Alumina Extraction
Lazou, Adamantia; Eijk, Casper van der; Tang, Kai; Balomenos, Efthymios; Kolbeinsen, Leiv; Safarian, Jafar (Peer reviewed; Journal article, 2021)Metallurgical grade alumina is produced worldwide through the well-known Bayer process, which unavoidably generates bauxite residue (BR, also known as red mud) in almost equal amounts to alumina. This study aims the ...