Theory of Metallurgical Processes
FSI-HPCAcad. year: 2017/2018
Students are made familiar with the physical and chemical fundamentals of metallurgical processes to an extent that enables preparing mathematical models of these processes and controlling them purposefully. Derivation of fundamental relations of thermodynamic activities and partial molar enthalpies of the components of molten alloy. Criterial functions used in PC modelling of metallurgical processes. Creating models of the processes inside alloys and at the interface of alloy and in surrounding environment. Modelling of selected processes in the Mathcad program environment.
Learning outcomes of the course unit
In the course, students will learn how to analyse the progress or equilibrium of specific metallurgical processes using mathematical models. They will also learn how to make use of the Mathcad program environment when modelling basic metallurgical processes.
Students must have the knowledge of inorganic chemistry (qualitative and quantitative aspects of chemical reactions and their energetics), thermomechanics (1st law of thermodynamics - heat, work, latent energy, enthalpy. 2nd law of thermodynamics - entropy), principles of thinking in algorithms, structured approach to problem solutions, and working with PC under the Windows operating system.
Recommended optional programme components
Recommended or required reading
Hae-Geon Lee: Chemical Thermodynamics for Metals and Materials,1st ed. London: Imperial College Press. 1999
Myslivec,T.: Fyzikálně chemické základy ocelářství. 2.vyd. Praha: SNTL. 1971
Komorová,L., Imriš,I.: Termodynamika v hutníctve. 1. vyd. Bratislava: Alfa. 1989
Turkdogan,E.T.: Fundamentals of Steelmaking, 1st ed. London: The Institute of Materials. 1996.
Brdička,R., Dvořák,J.: Základy fysikální chemie. 2. vyd. Praha: Academia. 1977
Moore,W.J.: Physical Chemistry, 4th ed. New Jersey: Prentice-Hall, Inc. 1972
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
Conditions of awarding the course-unit credit: participation in exercises. Examination: the knowledge of fundamental relations and, above all, the ability to apply these relations are tested. It is a written and oral examination.
Language of instruction
The objective of the course is to make students familiar with the thermodynamic fundamentals of metallurgical processes so that they can apply this knowledge when creating mathematical models of these processes, pursuing purposeful management based on the prediction of the progress or equilibrium of the process.
Specification of controlled education, way of implementation and compensation for absences
Attendance in lectures is recommended, attendance in exercises is obligatory.
Attending at the exercises is required, being checked by the leader of practicals. In the case of absence from exercises, the leader assigns a topic for independent written work.
Type of course unit
26 hours, optionally
Teacher / Lecturer
1. Equilibrium and thermodynamic probability of processes
2. Ideal solution, the Gibbs energy of components
3. Real solutions, chemical potential of components
4. Vapour pressure of components of real solutions, activity of components
5. Standard state of pure substance and 1% solution
6. The Van Hoff reaction isotherm
7. Thermal dissociation of gas compounds, equilibrium gas pressure
8. Oxygen dissolution in melts, deoxidation
9. Dissolution of nitrogen and hydrogen in melts. The Sieverts law.
10. Thermodynamics and kinetics of degassing
11. Reactions between the melt and refractories
12. The molecule and ion theory of slag
13. Equilibrium data on liquid steel- slag reactions of oxygen, phosphorus and sulphur.
26 hours, compulsory
Teacher / Lecturer
1. Mathcad program environment, calculation of concentrations.
2. The Boudouard model and diagram.
3. Decomposition of limestone, calculation of decomposition temperature.
4. Analysis of the progress of redox reactions.
5. Calculation of metal vapour pressure, temperature dependence.
6. Calculation of activity coefficients in multi-component alloys.
7. Maximum solubility of oxygen in iron.
8. Calculation of equilibrium oxygen pressure of oxides.
9. Analysis of oxygen solution in Fe-Al-O alloys.
10. Analysis of carbon/oxide equilibrium in steel.
11. Dissolution of nitrogen in Fe and steel.
12. Reactions between the melt and refractories.
13. The oxygen transfer from slag to iron.