618-0802/02 – Theory of Steelmaking Processes (TeoOcP)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 5 |
| Subject guarantor | prof. Ing. Zdeněk Adolf, CSc. | Subject version guarantor | prof. Ing. Zdeněk Adolf, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2004/2005 | Year of cancellation | 2015/2016 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
- student will be able to formulate conditions for equilibrium of processes and describe basic types of solutions (melts)
- student will be able to characterise processes running at the interface metal-atmosphere and metal-slag
- student will be able to solve the tasks aimed at optimisation of development of steelmaking processes
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Project work
Other activities
Summary
In the subject are explicated physico-chemical principle of high-temperature
processes proceeding during production, refining and casting of steel. Subject
is aimed onto melts of slag and steel and onto interactions proceeding on
their phase interface and interface with atmosphere.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Scoring semestral work.
E-learning
Lessons are continuously enriched by ever expanding implementation of e-learning elements.
Other requirements
Monitoring of other sources of information news from the field of metallurgy.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures
1. Equilibria. Equilibrium constant and manners of its expression. Principle of action and reaction.
2. Criteria of processes equilibria (G, K). Reaction isotherm and its importance.
3. Ideal solution – Raoult’s law. Diluted solution – Henry’s law.
4. Thermodynamic activity of a component in solution. Manners of expressing activity of component in solution.
5. Calculation of activity coefficients in poly-component systems. Molten steelmaking slags – molecular theory of slags.
6. Ion theory of slags. Affinity of elements – especially to oxygen.
7. Nernst distribution law. Distribution of oxygen between slag and metal.
8. Reactions running at production and refining of steel: oxidation of Si and Mn, transfer of oxygen from atmosphere into steel bath. Dephosphorisation of steel.
9. Desulphurisation of steel. Solubility of gases in metals; dependence on partial pressure of gas and on temperature.
10. Hydrogen in iron and steel. Nitrogen in iron and steel.
11. Oxygen in iron and steel. Carbon reaction and its importance at production and refining of steel.
12. Influence of temperature and pressure of development of carbon reaction. Vacuum carbon deoxidation of steel.
13. Coagulating deoxidation of steel. Diffusion deoxidation and deoxidation of steel by synthetic slags.
14. Inclusions in steel. Nucleation of inclusion and modification of inclusions.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction