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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Alshaaer, Mazen | Brussels |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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Ernst, Daniel
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Publications (7/7 displayed)
- 2024The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirementscitations
- 2024Optimizing methane plasma pyrolysis for instant hydrogen and high-quality carbon productioncitations
- 2023Impact of Iron Ore Pre-Reduction Degree on the Hydrogen Plasma Smelting Reduction Processcitations
- 2023The Behavior of Direct Reduced Iron in the Electric Arc Furnace Hotspotcitations
- 2022Evaluation of different alloying concepts to trace non-metallic inclusions by adding rare earths on a laboratory scalecitations
- 2022A New Methodological Approach on the Characterization of Optimal Charging Rates at the Hydrogen Plasma Smelting Reduction Process Part 2citations
- 2018Wire Bonding of Surface Acoustic Wave (SAW) Sensors for High Temperature Applicationscitations
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article
Evaluation of different alloying concepts to trace non-metallic inclusions by adding rare earths on a laboratory scale
Abstract
Different alloying concepts to trace deoxidation products, mainly aluminium oxides, using rare earth elements (REEs), were tested on the laboratory scale by melting trials with a high-frequency remelting furnace. Lanthanum and Cerium, which belong to the group of light REEs, were used for these experiments. The formed multiphase inclusions were characterized by scanning electron microscopy with energy dispersive spectroscopy. Concerning the higher atomic numbers of REEs, traced non-metallic inclusions (NMIs) seem brighter than the steel matrix compared to deoxidation products. REE-traced aluminium oxides showed a primarily heterogeneous and almost globular morphology. The mean equivalent circle diameter of REE-containing NMIs is for all trials similar and is about 2 µm. The experimental results pointed out that the recovery rates of the various alloying concepts differ only slightly. In contrast, the values mainly depend on the surface-to-volume ratio and the amount of oxygen in the melt.