618-0906/03 – Electrometallurgy (D_ELM)
Gurantor department | Department of Metallurgy and Foundry | Credits | 10 |
Subject guarantor | prof. Ing. Karel Michalek, CSc. | Subject version guarantor | prof. Ing. Karel Michalek, CSc. |
Study level | postgraduate | Requirement | Choice-compulsory |
Year | | Semester | winter + summer |
| | Study language | Czech |
Year of introduction | 2010/2011 | Year of cancellation | 2015/2016 |
Intended for the faculties | FMT | Intended for study types | Doctoral |
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:
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
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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