618-3004/01 – Electrometallurgy and Ferroalloys Production (EaVF)

Gurantor departmentDepartment of Metallurgy and FoundryCredits6
Subject guarantorprof. Ing. Karel Michalek, CSc.Subject version guarantorprof. Ing. Karel Michalek, CSc.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year1Semestersummer
Study languageCzech
Year of introduction2014/2015Year of cancellation
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
MIH50 prof. Ing. Karel Michalek, CSc.
STR580 Ing. Michaela Strouhalová, Ph.D.
WAL0017 Ing. Josef Walek
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 3+2
Combined Credit and Examination 16+0

Subject aims expressed by acquired skills and competences

Acquired knowledge - student will be able to characterise steelmaking technology and technology of ferroalloys production in electric arc furnaces and electric induction furnaces - student will be able to formulate basic physical chemical processes at steelmaking in electric furnaces ¨ Acquired skills -student will be able to use his knowledge for decision about suitability of steelmaking metallurgical processes -student will be able to apply his theoretical knowledge for improvements proposal of electro steel making technology and metallurgy

Teaching methods

Lectures
Seminars
Individual consultations
Tutorials

Summary

The subject is focused on theoretical and practical aspects of steel production in the electric furnaces. The attention is devoted to AC and DC arc furnaces, induction furnaces, hybrid and flexible units and other innovative trends in the field of electrometallurgy. Theory and practice of ferroalloys production is presented here.

Compulsory literature:

[1]PLOCKINGER, E. ad.: Electric Furnace Steel Production, John Wiley and Sons Ltd.,1985, 650s. [2]TOULOUEVSKI, Y.N., ZINUROV, I,Y. : Innovation in Electric Arc Furnaces. Springer, New York, 2010, 258 s. [3]FRUEHAN, R. J.: The Making, Shaping and Treating of Steel. Steelmaking and refining Volume. Chapter 10: EAF. Chapter 12: Refining of Stainless Steel. AISE Steel Foundation, 1998, 767 p. ISBN 0-930767-02-0. [4] MICHALEK, K.: Electrometallurgy and Ferroalloys Production. Didactic Text. VSB-Technical University of Ostrava, 2014, 178p.

Recommended literature:

[1]Proceedings of "European Electric Steelmaking Conference".

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

preparing a seminar work and passing current tests

Prerequisities

Subject codeAbbreviationTitleRequirement
618-3001 TPVŽaO Theory Processes in the Production of Iron and Steel Compulsory

Co-requisities

Subject has no co-requisities.

Subject syllabus:

1. Present state and perspectives of production of steel in electric furnaces. Classification of electric furnaces. Fundamentals of heavy electrical alternating current. 2. Theory of arc. DC electric arc. AC electric arc. Stabilization of arc burning. 3. Electrical and heat work regime of elektric arc furnaces (EAF). Working electrical characteristics. EAF. Dynamical, physical and chemical effects of the arches. UHP and SUHP furnaces. 4. Other heat sources in the EAF. Intensification of production in EAF. The use of gaseous oxygen. Oxyfuel burners. Foaming nozzle. Bottom blowing of inert gas into bath. EAF productvity. 5. Basic construction of EAF. EAF transformers, reactors, compensation power factor. EAF secondary electrical circuit. Graphite electrodes. Production of electrodes. 6. Regulation of the electrodes. Static and dynamic characteristics of the electrodes controller. Block diagram of the controller. Induction stirring in the bath EAF. Lining of EAF. Water EAF cooling. Suction gas furnace, gas cleaning. 7. Technologies EAF steel production. Two-slags technology. One-slags technology. The importance of oxidation and reduction period. Technology of overmelting. 8. Production of alloy and high alloy steel. Thermodynamics of metallurgical processes at oxygen rafination of melt. Dephosphorization of high alloy melt. Oxide alloy reduction from slags into melt. Alloying by titanium. Production of steel in acid EAF. 9. Combined steelmaking processes. EAF – DH, EAF-VOD. EAF - AOD. Hydrogen and nitrogen behaviour during the melting in the EAF. Molten steel temperature measuring. Determination of oxygen activity, hydrogen and nitrogen content in the bath. Automatization of production control in EAF. 10. Direct current (DC) EAF. Particularities and differences of the furnace design. Bottom anode. Heat procedure in DC EAF. Advantages of DC EAF furnaces and comparison with AC EAF. 11. New processes in the production of steel in EAF - Fuchs Shaft Furnace, Verticon, ConSteel, Comelt-VAI ContiArc. 12. New processes in the production of steel in EAF - CONARC, Arcon, Contimet, KES, Danarc. 13. Production of steel in induction furnaces. The principle of heating and melting. Construction of induction furnaces. Basic characteristics of electric induction furnaces. Steel production technology in induction furnaces. Vacuum induction furnace.Metallurgical processes taking place in a vacuum. Electroslag remelting. 14. Fundamentals of thermodynamics of ferro-alloys production. Carbothermic,silicothermic and aluminothermic methods of ferro-alloys production. Production of main types of ferroalloys: FeMn, FeCr, FeSi, FETI, FeW.

Conditions for subject completion

Combined form (validity from: 2014/2015 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 30  20
        Examination Examination 70  21
Mandatory attendence parzicipation:

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Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan
2019/2020 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2018/2019 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2018/2019 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan
2017/2018 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2017/2018 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan
2016/2017 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2016/2017 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan
2015/2016 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2015/2016 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 1 Choice-compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 1 Choice-compulsory study plan

Occurrence in special blocks

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