618-0906/03 – Electrometallurgy (D_ELM)

Gurantor departmentDepartment of Metallurgy and FoundryCredits10
Subject guarantorprof. Ing. Karel Michalek, CSc.Subject version guarantorprof. Ing. Karel Michalek, CSc.
Study levelpostgraduateRequirementChoice-compulsory
YearSemesterwinter + summer
Study languageCzech
Year of introduction2010/2011Year of cancellation2015/2016
Intended for the facultiesFMTIntended for study typesDoctoral
Instruction secured by
LoginNameTuitorTeacher giving lectures
MIH50 prof. Ing. Karel Michalek, CSc.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Examination 2+0
Part-time Examination 2+0

Subject aims expressed by acquired skills and competences

- student will be able to characterise steelmaking technology in electric arc furnaces and electric induction furnaces - student will be able to formulate basic physical chemical processes at steelmaking and ferroalloys production in electric furnaces - student will be able to describe power characteristics of arcs, regulation of electrodes, work of direct-current EAF and new flexible processes in electrometallurgy

Teaching methods

Individual consultations

Summary

only for Ph.D. study: Theory and practise production of steel in EAF

Compulsory literature:

[1]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.

Recommended literature:

[1]Plockinger, E. ad.: Electric Furnace Steel Production, John Wiley and Sons Ltd.,1985,650s.

Way of continuous check of knowledge in the course of semester

E-learning

Other requirements

elaboration of project

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

1.Theory of arc. Stabilization of arc burning. 2.Working electrical characteristics EAF. 3.Dynamical, physical and chemical effects of the arches. 4.UHP and SUHP furnaces. 5.Intensification of production in EAF. The use of gaseous oxygen. Oxyfuel burners. Foaming nozzle. Bottom blowing of inert gas into bath. EAF productvity. 6.Basic construction of EAF. EAF transformers, reactors, compensation power factor. EAF secondary electrical circuit. Regulation of the electrodes. Static and dynamic characteristics of the electrodes controller. 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. 9.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, CONARC, Arcon, Contimet, KES, Danarc. 12.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. 13. Electroslag remelting,Fundamentals of thermodynamics of ferro-alloys production.

Conditions for subject completion

Part-time form (validity from: 2010/2011 Winter semester, validity until: 2012/2013 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of pointsMax. počet pokusů
Examination Examination   3
Mandatory attendence participation:

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Conditions for subject completion and attendance at the exercises within ISP:

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Occurrence in study plans

Academic yearProgrammeBranch/spec.Spec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2011/2012 (P2106) Metallurgy (2109V036) Metallurgical Technology P Czech Ostrava Choice-compulsory study plan
2011/2012 (P2106) Metallurgy (2109V036) Metallurgical Technology K Czech Ostrava Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner

Assessment of instruction

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