Search Results - "Leiv Kolbeinsen"

Behavior of Slag in Ferromanganese and Silicomanganese Smelting Process by Lee, Young E., Kolbeinsen, Leiv

“…A review of studies by Safarian et al. and Kim show that the smelting reaction at equilibrium for ferromanganese and silicomanganese alloys is defined by the…”
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Evaluation of Calcium Aluminate Slags and Pig Irons Produced from the Smelting-Reduction of Diasporic Bauxite by Lazou, Adamantia, Kolbeinsen, Leiv, Safarian, Jafar

“…This work evaluates the characteristics of calcium aluminate slag and pig iron samples obtained from the smelting of calcined and reduced diasporic bauxite…”
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State of Reactions in Silicomanganese Smelting Process by Lee, Young E., Kolbeinsen, Leiv O.

“…Recent studies by Safarian et al . and Kim show that carbothermic smelting processes for SiMn alloys proceed by multiple reactions consisting of oxidation of…”
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The Utilization of Bauxite Residue with a Calcite-Rich Bauxite Ore in the Pedersen Process for Iron and Alumina Extraction by Lazou, Adamantia, Van Der Eijk, Casper, Tang, Kai, Balomenos, Efthymios, Kolbeinsen, Leiv, Safarian, Jafar

“…Metallurgical grade alumina is produced worldwide through the well-known Bayer process, which unavoidably generates bauxite residue (BR, also known as red mud)…”
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Phase Transitions and Microstructural Changes During Oxidation and Reduction of a Weathered Ilmenite Concentrate by Salehi, Hossein, Seim, Stian, Kolbeinsen, Leiv, Safarian, Jafar

“…The present work aims to investigate the link between the oxidation and reduction of a weathered ilmenite concentrate in terms of phase transitions,…”
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Kinetics Analysis of Steam Reforming of Methane on Sponge Iron by Ribeiro, Tiago Ramos, Neto, João Batista Ferreira, Poço, João Guilherme Rocha, Takano, Cyro, Kolbeinsen, Leiv, Ringdalen, Eli

“…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…”
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Steam Reforming of Methane on Sponge Iron: Influence of Gas Composition on Reaction Rate by Ribeiro, Tiago Ramos, Neto, João Batista Ferreira, Poço, João Guilherme Rocha, Takano, Cyro, Kolbeinsen, Leiv, Ringdalen, Eli

“…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…”
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On the Direct Reduction Phenomena of Bauxite Ore Using H2 Gas in a Fixed Bed Reactor by Lazou, Adamantia, van der Eijk, Casper, Balomenos, Efthymios, Kolbeinsen, Leiv, Safarian, Jafar

“…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),…”
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Microstructure Control of Steels through Dispersoid Metallurgy Using Novel Grain Refining Alloys by Grong, Øystein, Kolbeinsen, Leiv, Eijk, Casper van der, Tranell, Gabriella

“…This paper describes how small inclusions (designated dispersoids) can be used to control the microstructure of steels. The term “dispersoids” refers to…”
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Kinetic of Carbothermic Reduction of MnO from High-carbon Ferromanganese Slag by Graphite Materials by Safarian, Jafar, Kolbeinsen, Leiv

“…The kinetics of MnO reduction from a synthetic ferromanganese slag by different graphite materials was investigated using sessile drop wettability technique…”
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Progress in the Development and Use of Grain Refiner Based on Cerium Sulfide or Titanium Compound for Carbon Steel by Eijk, Casper van der, Grong, Øystein, Haakonsen, Fredrik, Kolbeinsen, Leiv, Tranell, Gabriella

“…A fine-grained microstructure yields the optimum combination of strength and toughness of steel. Moreover refinement of the as-cast structure can reduce the…”
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Wetting Behavior of Sintered Nanocrystalline Powders by Armco Fe and 22CrNiMoV5-3 Steel Grade Using Sessile Drop Wettability Technique by Amondarain, Zuriñe, Kolbeinsen, Leiv, Arana, Jose Luis

“…The wettability of sintered nanocrystalline oxide powders (CeO2, TiO2, Y3Al5O12, and ZrO2-yttria stabilized) and Al2O3 basis powder (60–70% purity) (product…”
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Use of Natural Gas with High CO2 Content in an Integrated Industrial Park by Nørstebø, Vibeke Stærkebye, Midthun, Kjetil Trovik, Bjørkvoll, Thor Harald, Kolbeinsen, Leiv

“…In this paper we analyse the economic and technical effects of using CO2 rich natural gas in an industrial park. The basis for our work is a technical-economic…”
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An Analysis of Hot Spot Phenomenon in BOF Process by Lee, Young E., Kolbeinsen, Leiv

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Kinetics of Oxygen Refining Process for Ferromanganese Alloys by LEE, Young E., KOLBEINSEN, Leiv

“…The present analysis of the experimental data by Yamamoto et al. permitted to determine the rate controlling mechanisms for the decarburization and evaporative…”
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Characteristics of Calcium-Aluminate Slags and Pig Iron Produced from Smelting-Reduction of Low-Grade Bauxites by Azof, Fabian Imanasa, Kolbeinsen, Leiv, Safarian, Jafar

“…Low-grade bauxite ores are not favorable in the conventional Bayer process for alumina production, as they are producing more bauxite residue (red mud) and…”
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A Process Model for the Carbothermic Reduction of MnO from High Carbon Ferromanganese Slag—The Model by Safarian, Jafar, Grong, Øystein, Kolbeinsen, Leiv, Olsen, Sverre E.

“…In the present investigation, novel process modelling techniques have been applied to capture the kinetics of the MnO reduction process. The judicious…”
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Leaching characteristics and mechanism of the synthetic calcium-aluminate slags for alumina recovery by Azof, Fabian Imanasa, Yang, Yongxiang, Panias, Dimitrios, Kolbeinsen, Leiv, Safarian, Jafar

“…The leaching characteristics and mechanism of synthetic CaO-Al2O3 slags in alkaline solution at atmospheric pressure have been studied. The purpose of the…”
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Microscopic Study of Carbon Surfaces Interacting with High Carbon Ferromanganese Slag by Safarian, Jafar, Kolbeinsen, Leiv

“…The interaction of carbon materials with molten slags occurs in many pyro-metallurgical processes. In the production of high carbon ferromanganese in submerged…”
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Thermodynamic activities in silicon binary melts by Safarian, Jafar, Kolbeinsen, Leiv, Tangstad, Merete

“…The thermodynamic activities in the silicon binary melts with Al, Ca, Mg, Fe, Ti, Zn, Cu, Ag, Au, Sn, Pb, Bi, Sb, Ga, In, Pt, Ni, Mn and Rh are studied. The…”
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