Blar i Institutt for materialteknologi på tidsskrift "The Minerals, Metals & Materials Series"
Viser treff 21-35 av 35
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Investigation on scale formation in aluminium industry by means of a cold-finger
(Journal article; Peer reviewed, 2019)A cylindrical fouling probe or “cold-finger” has been used to investigate fouling from aluminium production off-gas. The probe was located upstream from the off-gas cleaning system. Surface deposits have been collected for ... -
Lab-Scale Physical Model Experiments to Understand the Effect of Particle Bed on Tapping Flow Rates
(Peer reviewed; Journal article, 2022)Optimal tapping of metallurgical furnaces is required for efficient furnace operation. Improper tapping can lead to metal and slag accumulation in the furnace thereby reducing the process efficiency. The mass flow rate of ... -
Metal and Slag Extraction from Different Zones of a Submerged Arc Furnace with Non-uniform Porous Bed Using CFD
(Peer reviewed; Journal article, 2022)The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such ... -
Optical and Electrochemical Characterisation of Carbon Anodes with Varying Porosity and Coke Quality
(Peer reviewed; Journal article, 2022)The performance of carbon anodes in aluminium production will depend on both the coke quality (impurities, structure) and the physical properties of the anode (density, permeability, electric resistivity). Here, a set of ... -
Overview of the Possibilities and Limitations of the Characterization of Ceramic Foam Filters for Metal Melt Filtration
(Journal article; Peer reviewed, 2021)The filtration of molten metal using ceramic foam filters (CFF) is a purification method often used by the aluminum industry to meet the increasing demands the melt quality. CFFs are in most cases produced by the replica ... -
Post Processing Approach to Model Microsilica Formation
(Peer reviewed; Journal article, 2023)In this work an OpenFOAM-based framework to simulate the evolution of microsilica, which is an important byproduct in the silicon/ferrosilicon industries, is proposed. The framework decouples the combustion reaction of CO ... -
A Pragmatic Model for Alumina Feeding
(Peer reviewed; Journal article, 2022)In this paper, we demonstrate how we can develop a coarse-grained model for the alumina distribution in an aluminium reduction cell. The model is designed to have the potential of being a part of a control system or play ... -
A Pragmatic Model for Bath Temperature Evolution During Alumina Feeding
(Peer reviewed; Journal article, 2023)In this paper, we extend the pragmatic model for alumina feeding, presented in Johansen et al. Light metals 2022, to treat the associated evolution of bath temperature. The underlying idea of the framework is to reduce its ... -
Preliminary Experimental Study of the Thermal Stability and Chemical Reactivity of the Phosphate-Based Binder used in Al2O3-Based Ceramic Foam Filters (CFFs)
(Journal article; Peer reviewed, 2018)Filtration of liquid aluminium is widely used in the industry for the removal of inclusions, and Ceramic Foam Filters (CFFs) are often the filtration media of choice. It is known that PH3 (phosphine) can be released from ... -
Revealing the Heterogeneous Nucleation and Growth Behaviour of Grains in Inoculated Aluminium Alloys During Solidification
(Peer reviewed; Journal article, 2019)An in situ X-ray radiographic study on the grain nucleation and grain growth of inoculated Al–10Cu and Al–20Cu alloys during isothermal melt solidification and directional solidification conditions with constant cooling ... -
Slag Reduction and Viscosities Interaction in Ferromanganese Process
(Peer reviewed; Journal article, 2022)Slag reduction and viscosity are closely related in the practical operation of a submerged arc furnace for ferromanganese (FeMn) production. The viscosity of slag is dependent on temperature and its composition, and ... -
Study of controllable inclusion addition methods in Al melt
(Journal article; Peer reviewed, 2019)Ceramic Foam Filtration (CFF) is a widely used technique to remove inclusions from Al melt. To ensure sufficient inclusions in the melt during the grain refiners/filtration interaction, inclusion addition methods, such as ... -
Thermogravimetric Analysis of Thermal Insulating Materials Exposed to Sodium Vapor
(Journal article; Peer reviewed, 2019)The bottom thermal insulating layer in aluminum electrolysis cells is normally well protected from chemical attacks by a refractory layer. However, autopsies of spent cathode lining have shown that sodium vapor may reach ... -
Trends and Challenges for Electrowinning of Aluminium and Magnesium from Molten Salt Electrolytes
(Peer reviewed; Journal article, 2020)Modern aluminium producing cells are operating at ~955–965 °C. The current efficiency with respect to aluminium can be as high as 96% and the corresponding energy consumption may be ~13 kWh/kg Al and higher in cells running ... -
Wetting of Carbon Cathodes by Molten Electrolyte and Aluminium
(Journal article; Peer reviewed, 2021)The extent to which the carbon cathode is wetted by molten electrolyte or molten aluminium metal is important for understanding the cathode wear during aluminium electrolysis. The present paper reports on a laboratory study ...