9th Scientific Exchange Day 2018

TU Wien, Campus Getreidemarkt

TU Wien, Campus Getreidemarkt

Christoph Ponak, M. Sc. (Montanuniversität Leoben)

Christoph Ponak, M. Sc. (Montanuniversität Leoben)

Martin Stückelschweiger, M. Sc. (K1-MET)

Martin Stückelschweiger, M. Sc. (K1-MET)

Dr. Nathalie Kölbl (Montanuniversität Leoben)

Dr. Nathalie Kölbl (Montanuniversität Leoben)

Maria Thumfart, M. Sc. (K1-MET & Johannes-Kepler-Universität)

Maria Thumfart, M. Sc. (K1-MET & Johannes-Kepler-Universität)

The 9th Scientific Exchange Day of K1-MET was held on February 7th, 2018 at Technische Universität Wien. K1-MET was supported by the Institute of Chemical, Environmental and Bioscience Engineering. The Scientific Exchange Day (SED) is an annual held conference, which brings together researcher and industrial partners of the K1-MET programme for discussion and networking. With an overall number of 100 participants this year, the event was well attended again.

The morning programme consisted of presentations covering one success story for each of our four Research Areas summarizing the latest research highlights. The members of the scientific advisory board, Prof. Dr. Rüdiger Deike and Prof. Dr. Dr. h.c. Markus Reuter were the chairmen of this session.

Christoph Ponak, M. Sc., (Montanuniversität Leoben) presented the contribution from Research Area (RA) 1 about the progress in Project 1.3. His presentation was titled “Phosphorus removal and metal recovery from BOF-slags by carbo-thermal reduction”. In general, the accumulation of phosphorus in the metal phase limits the reducibility of BOF-slags when it comes to product quality. With the help of an inductively heated lab-scale reactor (InduMelt plant) at the Chair of Processing Technology (Montanuniversität Leoben, 80 % of the input phosphorus of varying slag mixtures could be removed via the gas phase. Based on that, further trials will be executed with a larger-scale pilot plant (InduRed) in the next step.

Martin Stückelschweiger, M. Sc. (Researcher at K1-MET), introduced the success story of RA 2 with the title “Creep of carbon containing refractories - Measurement and Simulation“ summarizing the status of Project 2.4. Creep testing of carbon containing materials at high temperatures is a big challenge due to the oxidation of the carbon. For this reason, special experimental setups have been developed which prevent the oxidation of the carbon during a creep measurement. The evaluated parameters allow an insight into the stress distribution in the refractory lining by Finite Element simulations.

Dr. Nathalie Kölbl. (Montanuniversität Leoben) presented the contribution of RA 3 from Project 3.1 with the title “Investigation of mold slag crystallization under near service conditions”. For mold slag investigation under near service conditions, the state of the art equipment is the “Double Hot Thermocouple Technique”. It is known that the experimental procedure as well as the data evaluation suffer from certain deficiencies. Therefore, the set-up of this equipment was fundamentally improved and the characterization of the crystalline fraction in dependence on the distance from the cold side is possible. Based on these improvements, different slag composition can be assessed regarding their application in the continuous casting process.

The investigation of the tundish from a continuous casting line was content of RA 4 success story originating from Project 4.4. The presentation was entitled “Flow structure investigation on a tundish with a line sparger - A numerical study supported by experiments and analytical considerations” and was held by Maria Thumfart, M. Sc. (Researcher at K1-MET & Johannes Kepler Universität). Project 4.4 is focused on the improvement of simulation models for metallurgical melts. One subtask investigates the global flow in the tundish of a continuous casting line whereas an innovative aspect concentrates on the separation of non-metallic particles by means of gas bubble injection. In preliminary numerical simulations, these bubbles showed a tremendous influence on the global steel melt flow inside the tundish. To quantify this influence in a more reliable way, water experiments were performed with a tundish model on a scale of 1:3. The experiments were used to determine a simplification degree for accompanying simulations. The obtained data showed that simulations considering the free surface can visualize the influence of the bubbles on the global tundish flow with a good agreement compared to the real situation.

In the afternoon session of the 9th SED, Dr. Johannes Rieger (Manager of Area 1) and Dr. Bernhard König (Manager of Area 4) presented the planned research program for the second COMET funding period (01/07/2019 to 30/06/2023). K1-MET management started in autumn 2017 with the work on the proposal of the K1-MET program continuation.

The executive board of K1-MET would like to thank Technische Universität Wien for providing the location. We also want to extend our thanks to Prof. Dr. Michael Harasek and his team (among others Markus Bösenhofer, M. Sc., Christian Jordan, M. Sc.) for their active support during the planning works and during the SED. Furthermore, special thanks to all presenters for their contributions and Prof. Dr. Deike and Prof. Dr. Dr. h.c. Reuter for chairing the morning session.

 

Documents for download: