GRK 2802: Extraction of Vanadium from CaO–SiO2–MgO–Al2O3 Slags Based on Vaporization of Vanadium Pentoxide
References to related material | https://doi.org/10.1002/srin.202300681 | |
Type of the data | Dataset | |
Type of the data | Image | |
Total size of the dataset | 9198026 | |
Author | Neubert, Lukas | |
Author | Shyrokykh, Tetiana | |
Author | Tinkova, Nataliia | |
Author | Seetharaman, Sridhar | |
Author | Volkova, Olena | |
Upload date | 2025-10-24T12:02:03Z | |
Publication date | 2025-10-24T12:02:03Z | |
Publication date | 2025-10-24 | |
Abstract of the dataset | Vanadium is an important micro-alloying element for various steel grades. Consequently, it is also present in the slags used in the production of those grades. During steelmaking, the vanadium vaporization from the slag is not desirable, as it increases vanadium consumption and at the same time releases toxic vapors of its higher oxides. However, the recovery of vanadium from the slag after the processing is worthwhile. In oxidic form as vanadium pentoxide (V2O5), vanadium can be extracted from the slag. In this research, the vaporization behavior of vanadium from CaO–SiO2–MgO–Al2O3 industrial slag is investigated at 1873 K. The effect of different process parameters, e.g., the pressure in the furnace chamber, the duration of the oxygen treatment of the slag, and the oxygen flow rate, is considered. The effect of P2O5 and Fe2O3 addition on the extraction of vanadium is studied. It is possible to induce formation of V2O5 gas bubbles in the slag due to the oxidation of vanadium. Thus, vanadium respectively V2O5 is extracted from the slag. | |
Public reference to this page | https://opara.zih.tu-dresden.de/handle/123456789/1721 | |
Publisher | Technische Universität Bergakademie Freiberg | |
Specification of the discipline(s) | 4::43 | |
Title of the dataset | GRK 2802: Extraction of Vanadium from CaO–SiO2–MgO–Al2O3 Slags Based on Vaporization of Vanadium Pentoxide | |
Project abstract | The focus of this doctoral project is to investigate the interaction of electrical steels (transformer steels), with high-silicate purity ladle slags free of running slag, with MgO-C products based on recyclates and environmentally friendly binders. The formation of ladle glaze can be studied by immersing a MgO-C product in a tracer-labelled slag during an immersion test. Investigations of the thermophysical properties of the liquid, killed/unkilled electrical steels and liquid slag as a function of temperature and SiO2 content, combined with thermodynamic calculations using FactSage software, make it possible to determine their influence on the interaction with MgO-C and ladle glaze formation. The influence of ladle glaze on the oxidic inclusion population, on the pick-up effect (undesirable increase of alloying elements) and reoxidation of the alloying elements is investigated by ladle glaze dissolution in the electric steel melt accompanied by chemical analysis and optical microscopy in combination with AFA (Automatic Feature Analysis) in the P-SEM. Research into the effect of the oxidic, non-metallic inclusions that form from ladle glaze on clogging in the spout nozzle based on recycled Al2O3-C is another focus. | |
Funding Acknowledgement | The dataset was generated within the framework of the Research Training Group GRK 2802 (project ID: 461482547) funded by the German Research Foundation (DFG). | |
Public project website(s) | https://tu-freiberg.de/en/research/grk2802 | |
Project title | GRK2802_P4_Interaction of electrical steels with MgO-C products based on recyclates and environmentally friendly binders |