618-0809/01 – Secondary Metallurgy (SekMet)

Gurantor departmentDepartment of Metallurgy and FoundryCredits5
Subject guarantorprof. Ing. Zdeněk Adolf, CSc.Subject version guarantorprof. Ing. Zdeněk Adolf, CSc.
Study levelundergraduate or graduateRequirementCompulsory
Year2Semesterwinter
Study languageCzech
Year of introduction2004/2005Year of cancellation2015/2016
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
ADO10 prof. Ing. Zdeněk Adolf, CSc.
SOC02 doc. Ing. Ladislav Socha, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 3+2

Subject aims expressed by acquired skills and competences

- student will be able to define processes proceeding at molten steel refining - student will be able to explain substance of steel refining in the ladle - student will be able to formulate using possibilities for individual variants of secondary metallurgy

Teaching methods

Lectures
Seminars
Individual consultations
Tutorials
Project work
Other activities

Summary

The subject explains theoretical principles of processes running at refining of liquid steel in a ladle, principles of refining technologies and equipment for ladle metallurgy. Refining of steel by inert gases. Vacuum refining of steel. Refining of steel by synthetic slag. Technology for production of stainless steels . Special refining technologies.

Compulsory literature:

[1] Ghosh, A.: Secondary Steelmaking - Principles and Applications. New York, 2001, 322 p. ISBN 0-8493-0264-1. [2] Stolte, G.: Secondary Metallurgy - Fundamentals Processes Applications. Düsseldorf, 2002, 216 p. ISBN 3-514-00648-2. [3] Fruehan, R. J.: The Making, Shaping and Treating of Steel. Pittsburgh, USA, 1998, 759 p. ISBN: 0-930767-02-0. [4] Knüppel, H.: Desoxydation in Vakuum - Behandlung von Stahlschmelzen, Düsseldorf, 1983, 286 p.

Recommended literature:

[1] Ghosh, A.: Secondary Steelmaking - Principles and Applications. New York, 2001, 322 p. ISBN 0-8493-0264-1. [2] Stolte, G.: Secondary Metallurgy - Fundamentals Processes Applications. Düsseldorf, 2002, 216 p. ISBN 3-514-00648-2. [3] Fruehan, R. J.: The Making, Shaping and Treating of Steel. Pittsbourgh, USA, 1998, 759 p. ISBN: 0-930767-02-0. [4] Knuppel, H.: Desoxydation in Vakuum - Behandlung von Stahlschmelzen, Dusseldorf, 1983, 286 p. Articles in professional journals, papares of conferences, research reports, theses.

Way of continuous check of knowledge in the course of semester

Two semestral papers evaluated by points and their defence within seminars in the course of lessons.

E-learning

For electronic communication with the teachers enjoy the university e-mail addresses those can be found here: http://staff.vsb.cz/ Integration of e-learning elements into the subject is in progress.

Další požadavky na studenta

There are not additional requirements on students in the field of this subject.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Lectures 1. Causes of development of secondary metallurgy methods. 2. Principal procedures of processing of steel by secondary metallurgy and its effects. 3. Elements related to production and refining of steel. 4. Gases in steel – thermodynamics, mechanism and kinetics of dissolution of H2 and N2. 5. Thermodynamics and mechanism of steel degassing. 6. Dissolving of oxygen in steel – thermodynamics and mechanism. 7. Conditions for flotation of inclusions by an inert gas – absorption of inclusions by slag. 8. Refining of steel by inert gases – effects – methods of execution. 9. Vacuum refining of steel – nucleation of gaseous bubbles – diffusion of gas atoms toward surface. 10. Technologies of secondary metallurgy vacuum treatment of steel, including appropriate equipment. 11. Conditions for production of stainless steels – thermodynamics of deep decarburisation of steel with high content of chromium – technology for production of stainless steels. 12. Refining of steel by synthetic slags – thermodynamic conditions for refining – mechanism and kinetics of refining – technologies for refining of steel by liquid and solid synthetic slag – used slags – characteristics. 13. Ladles furnaces – their importance of treatment of steel by secondary metallurgy – classification of ladle furnaces – possibilities of ladle furnaces. 14. Injection of cored wires and aluminium wires into steel – reasons, technologies. Exercises 1. Calculation of steel alloying. Technical library - selection and processing of topical literary sources from the area of secondary metallurgy. 2. Elements at production and refining of steel (oxidation of carbon, manganese, silicon, dephosphorisation, desulphurisation); specification of program. 3. Hydrogen, nitrogen and oxygen in molten steel. 4. Removal of hydrogen and nitrogen by argon in vacuum, floating of inclusions. 5. Tour at TŘINECKÉ ŽELEZÁRNY, a.s. (ladle metallurgy). 6. Conditions for nucleation of gaseous bubbles in vacuum, kinetics of degassing in ladle and in steel flow; written exam. 7. Possibilities of reduction of content of gases in vacuum, degassing of steel in its flow, kinetics of degassing by chamber method. 8. Deoxidation of steel by carbon in vacuum. 9. Desulphurisation of steel by liquid synthetic slag, balance of mass at desulphurisation. 10. Monitoring of development of heat in selected metallurgical company. 11. Refining of steel by blowing of fine-grained admixtures. 12. Comparison of individual secondary metallurgy units; written exam. Video-programs (DH, SL Vítkovice, CCM at ArcelorMittal, ESR of steels). 13. Seminar - presentation of results of study of literature. 14. Credit.

Conditions for subject completion

Full-time form (validity from: 1960/1961 Summer semester, validity until: 2015/2016 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 (30) 0
                Project Project 10  0
                Written exam Written test 20  0
        Examination Examination 70 (70) 0
                Written examination Written examination 15  0
                Oral Oral examination 55  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2015/2016 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2013/2014 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2012/2013 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2011/2012 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2010/2011 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2009/2010 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2008/2009 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2007/2008 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2006/2007 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan
2005/2006 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production P Czech Ostrava 2 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner