618-3001/04 – Theory Processes in the Production of Iron and Steel (TPVŽaO)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 7 |
| Subject guarantor | doc. Ing. Pavlína Pustějovská, Ph.D. | Subject version guarantor | doc. Ing. Pavlína Pustějovská, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | English |
| Year of introduction | 2019/2020 | Year of cancellation | 2022/2023 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Acquired knowledge:
- the student will be able to formulate the conditions of equilibrium processes and describe the basic types of solutions (melts);
- the student will be able to characterize the processes occurring at the interface of a metal and metal-atmosphere-slag.
Acquired skills:
- the student will be able to solve tasks aimed at optimizing the course of metallurgical processes.
Teaching methods
Lectures
Individual consultations
Tutorials
Summary
The subject is focused on understanding the physico-chemical nature of high-temperature processes occurring in pig iron production, refining and casting. To give students the ability to understand and correctly apply the laws describing the theoretical basis of metallurgical processes.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Requirements for the student: active 80% participation in seminars, elaboration of seminar work, elaboration of 2 semester programs, 2 continuous tests within the semester.
Exam: combined (written and oral) exam.
E-learning
Other requirements
Elaboration of a semester project. Two continuous tests.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Blast furnace charge, iron ore, types and properties of the individual components of the charge, the theory of folding fine-grained materials, sintering and pelletizing of iron ore, the quality requirements of the individual components of the blast furnace charge.
2. Thermodynamics and kinetics of processes and oxidative processes in the areas of blast furnace, the theoretical combustion temperature and composition hearth gas humidification blast of wind, spare fuel injection, oxygen enrichment wind.
3. Countercurrent feedstock and gas in the blast furnace, gas flow patterns of a granular layer, the heat exchange in the blast furnace.
4. Reduction of iron oxide with carbon, direct and indirect reduction, the share of direct influence on the reduction of specific consumption of carbon
5. The reduction of iron oxide by hydrogen reduction of other elements, the dissociation reaction in the blast furnace, pig iron carburization.
6. Blast furnace slag formation, properties and functions of blast furnace slag, desulphurisation of pig iron.
7. Types of produced raw irons, quality pig iron, theoretical foundation of iron outside the blast furnace, the direct production of iron ore (DRI ) melting reduction.
8. The basic energy function. Criteria equilibrium processes (G, K). Balance. The equilibrium constant and ways of expression. The principle of action and reaction.
9. The reaction isotherm and its importance. The ideal solution - Raoult's law. Diluted solution - Henry's law.
10. The thermodynamic activity of the constituents in solution. Modes of expression activity component in the solution. Calculation of activities in multicomponent systems.
11. The molten steel slag - slag molecular theory. Ion theory slags.
12. Nernst distribution law. Distribution of oxygen between the slag and metal. The reaction occurring in the production and refining of steel: the oxidation of Si and Mn, the transfer of oxygen from the atmosphere into the steel bath.
13. Dephosphorization steel. Desulfurization of steel. Gases in iron melts. Dependence on the partial gas pressure and temperature.
14. Hydrogen in iron and steel. Nitrogen in iron and steel. The oxygen in the iron and steel. Carbon reaction and its importance in the production and refining of steel. Influence of temperature and pressure waveform carbon reaction.
15. Affinity elements to oxygen. The precipitation deoxidation of steel. Diffusion and deoxidation deoxidation of steel with synthetic slag. The inclusions in the steel.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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