652-9912/01 – Contemporary Steelmaking Processes in BOF and EAF (SPVOKE)
| Gurantor department | Department of Metallurgical Technologies | Credits | 10 |
| Subject guarantor | doc. Ing. Silvie Brožová, Ph.D. | Subject version guarantor | doc. Ing. Silvie Brožová, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory type B |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
- student will be able to compare advantages of top and bottom blown converters
- student will be able analyse charge composition by variant of converter, and to describe emerging wastes and possibilities of their treatment
- student will be able to characterize the technology of steel and ferro-alloys production under conditions of electric arc/induction furnaces, to describe the arc characteristics, electrodes regulation, work of DC EAF, and new flexible processes in the frame of electro-metallurgy
- student will be able to formulate the fundamental physical-chemical processes during the steel and ferro-alloys production in the EAF
Teaching methods
Individual consultations
Summary
The subject is focused on study of theoretical and technological aspects of steel production in oxygen converters and electrical arc furnaces including deepening of knowledge in theory an practise area of plain, alloying and stainless steel production and in area of steel production in hybrid and flexible metallurgical units.
Compulsory literature:
Recommended literature:
Proceedings of "European Oxygen Steelmaking Conference (EOSC)".
Proceedings of "European Electric Steelmaking Conference (EESC)"
Way of continuous check of knowledge in the course of semester
Oral exam, part of the exam is the submission of a seminar paper on a given topic
E-learning
Other requirements
Required knowledge within the scope of the course syllabus
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Physico-chemical nature of steel production. Acid and basic steel processes. Steel production in LD converters. Converter characteristics. Batch, course of forging processes, mode of oxygen blowing.
Melting slag mode. Melting mode. Static and dynamic model of melt control in LD converter.
Steel production in OBM converter. Nozzles, thermal protection of nozzles, blown media. Formation and significance of slag. Comparison of OBM and LD converter. Processing of pig iron with a higher phosphorus content.
Deoxidation and alloying of steel. Deoxidation of steel with synthetic slag. Vacuum carbon deoxidation of steel. Non-metallic inclusions in steel, distribution of non-metallic inclusions. Inclusion modifications.
Theory of origin and stabilization of direct current and alternating electric arc combustion. Combined working characteristics of EOP. UHP, SUHP and UHCP furnaces.
Melting intensification in EOP. Use of oxygen gas, oxyfuel burners. Electrode movement regulation. Static and dynamic characteristics of the controller.
Importance of oxidation and reduction period of melting. Remelting technology. Thermodynamics of metallurgical processes during oxidative refining of high chromium baths.
Behavior of hydrogen and nitrogen during melting in EOP. Monitoring of basic physicochemical characteristics of liquid steel. Production management automation in EOP.
DC fed arc furnaces. Design and metallurgical differences from alternating EOPs.
New processes in the production of electrical steel, flexible and hybrid processes. Steel production in induction furnaces. Theory of heating and melting. Design of induction furnaces. Electroslag remelting.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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