Evaluation of the Influences of Scrap Melting and Dissolution during Dynamic Linz–Donawitz (LD) Converter Modelling
| Autor: | Rainer Ammer, Johannes Schenk, Gerald Klösch, Florian Markus Penz, Krzysztof Pastucha |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Materials science scrap dissolution dynamic converter modelling 0211 other engineering and technologies Bioengineering Scrap Pure oxygen 02 engineering and technology lcsh:Chemical technology 01 natural sciences lcsh:Chemistry thermodynamics 0103 physical sciences Chemical Engineering (miscellaneous) lcsh:TP1-1185 Process engineering Dissolution scrap melting 021102 mining & metallurgy 010302 applied physics business.industry Process Chemistry and Technology Coolant Iron source Dynamic simulation lcsh:QD1-999 kinetics Scientific method business |
| Zdroj: | Processes, Vol 7, Iss 4, p 186 (2019) Processes Volume 7 Issue 4 |
| ISSN: | 2227-9717 |
| Popis: | The Linz&ndash Donawitz (LD) converter is still the dominant process for converting hot metal into crude steel with the help of technically pure oxygen. Beside hot metal, scrap is the most important charging material which acts as an additional iron source and coolant. Because of the irrevocable importance of the process, there is continued interest in a dynamic simulation of the LD process, especially regarding the savings of material and process costs with optimized process times. Based on a thermodynamic and kinetic Matlab® coded model, the influences of several scrap parameters on its melting and dissolution behavior were determined, with a special focus on establishing the importance of specific factors on the crude steel composition and bath temperature after a defined blowing period to increase the accuracy of the process model. The calculations reported clearly indicate that the dynamic converter model reacts very sensitively to the chemical composition of the scrap as well as the charged scrap mass and size. Those results reflect the importance of experiments for validation on the diffusive scrap melting model in further research work. Based on that, reliable conclusions could be drawn to improve the theoretical and practical description of the dissolution and melting behavior of scrap in dynamic converter modelling. |
| Databáze: | OpenAIRE |
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