618-3003/01 – Technology of Steelmaking in Converters (TVOvK)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 6 |
| Subject guarantor | prof. Ing. Markéta Tkadlečková, Ph.D. | Subject version guarantor | prof. Ing. Markéta Tkadlečková, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | 2020/2021 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
To provide students the theoretical basis of steel processes, explain the technological applications of steel in converters, in tandem and SM furnaces and apply knowledge of deoxidation of steel and clean steel technology practice.
Acquired knowledge:
- student will be able to characterise ...
Acquired skills:
-student will be able to use his knowledge for ...
Teaching methods
Lectures
Tutorials
Project work
Other activities
Summary
The subject is focused and described how the theoretical bases as well as technological applications oxidation processes occurring during the production of steel by acid or alkaline manner, then the issue of deoxidation and steel cleanliness.
Compulsory literature:
Recommended literature:
[1] Papers in journals and conference proceedings.
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
preparing any seminar works and passing written tests
Prerequisities
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Overview, significance and perspective of steel production. - Historical development of steel production. – Distribution of steel and steel products.
2. Physico-chemical nature of steel making under acidic and alkaline conditions. – Refractories used in steel aggregates. – Production of steel in LD converters. – The characteristics of the converter.
3. Charge, progress of refine processes, oxygen blowing mode. – Steel making lime – physical-chemical properties. – Slag mode during heat.
4. Thermal mode during heat. – Static and dynamic control model of melting in the LD converter. – Processing of pig iron with a high content of phosphorus (processes: OLP, LD-P, PL, KALDO, Rotor).
5. Steelmaking in the bottom blowing converters. – Process OBM (Q-BOP), OXYVIT. – Converter characteristics.
6. Nozzles, the thermal protection of nozzles, blowing media. – Charge. – Refining processes – differences against LD converters.
7. Slag creating and its importance. – Comparison of OBM and LD converter. – Steelmaking in tandem furnaces.
8. Development of tandem furnace and its construction. – Charge and technology of heat control. – Oxygen blowing, heat and slag mode.
9. Advantages and disadvantages of tandem furnaces. – Steelmaking process in SM furnaces. – Historical significance, furnace characteristics, variants of process.
10. Pig iron mixers. – Steel deoxidation, physico-chemical nature and significance of steel deoxidation, overview of methods. – Steel deoxidation and alloying.
11. Clotting deoxidation of steel. – Diffuse deoxidation. – Deoxidation of steel by synthetic slag.
12. Vacuum carbon deoxidation of steel. – Non-metallic inclusions in steel, distribution of non-metallic inclusions.
13. Oxidic and sulphidic inclusions, nitrides, carbides. – Changes in chemical composition and shape of inclusions depending on the Al content.
14. Inclusions modification. – Coagulation and coalescence and flotation of inclusions in steel.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction