635-0012/01 – Furnace Linings (VP)
| Gurantor department | Department of Thermal Engineering | Credits | 6 |
| Subject guarantor | prof. Ing. Jozef Vlček, Ph.D. | Subject version guarantor | prof. Ing. Jozef Vlček, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 6 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 1966/1967 | Year of cancellation | 2009/2010 |
| Intended for the faculties | FMT | Intended for study types | Master |
Subject aims expressed by acquired skills and competences
-The course introduces the principles of the use refractory materials , design and construction lining furnaces and equipment in metallurgy and engineering, driers and kilns in the ceramics industry, glass furnaces, kilns in the chemical industry and heating equipment in Energy industry
- Characterized by specific types of lining furnaces and heating equipment with regard to manufacturing technology in their ongoing
- In the course students get acquainted with conditions in the analysis phase
refractory materials and in contact with corosion refractory materials with chemical, mechanical and thermal stresses lining
- The course is also familiar with the technology of making lining and unshape materials, technologies and methods of repair increasing lining life
Teaching methods
Summary
Technological requirements on furnace linings properties. Principles for using
refractory materials. Thermal work of linings. The materials for furnace
building. Construction of linings. Furnace linings in the metallurgy and
mechanical engineering. Linings for molten metal transport devices and for
secondary refining. Refractory materials for steel continuous casting. Furnace
linings in production of ceramics and building materials. Linings for other
thermal industry devices.
Compulsory literature:
1. ROUTSCHA, G. Refractory materials: Basics – structures Propeties. 2nd Ed. Essen: Vulkan Verlang, 2004. 512 p.
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
Practical work.
E-learning
In the present study support are available.
Other requirements
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject syllabus:
Lectures
1.Technological requirements for lining furnaces and heating equipment.
2.Use of refractory materials - draft terms of decision-lining.
3.Consumption of refractory materials in various industrial sectors (metallurgy of ferrous and nonferrous metals, chemicals, glass, construction materials and fuels).
4.Basic refractory materials for furnace structure and characteristics - shape and non-shaped construction materials, heat insulation materials.
5.Temperature work lining - lining solution temperature field in a time-steady and unsteady state, one-sided heating, heating the entire volume, continuous and cyclic heating, 1 and 2 Fourier's law, initial and surface conditions.
6.Effect of insulation in the lining, the basic thermal and technical properties of refractory materials (thermal conductivity, heat capacity, viscosity, density, bulk density).
7.Effect of corrosion lining and measures for its prevention - study of the interaction between slag and refractory materials (application ternary diagrams), cooling lining.
8.Technology of making linings. Linings of dense shaped material, unshaped from building materials, cellular and fibrous materials. Monoliths. Anchoring and hanging lining.
9. Construction of lining of metallurgical units (blast furnace, heaters, wind, pig iron mixer, converter, tandem furnace, EAF, electric induction furnaces, etc.).
10. Construction of linings in secondary metallurgy (ladles, tundish + shading and dip tube, vacuum equipment for steel, etc.).
11. Construction of linings of furnaces linings in ceramics, glass, and power industry (fuel drying, chamber furnace, tunnel kiln, rotary and shaft kiln for burning raw materials, glass melting furnaces).
12. Repair of lining - lining repair technology "cold" and "hot" (shotcreting, shotkretování, coating slag, slag splashing, etc.), ways of increasing the life of furnace linings and thermal devices.
Exercise
1. Linear and polynomial regression - using the least squares method for approximating the dependencies.
2. Wider use of built-in functions of MS Excel – function KDYŽ, VYHLEDAT, INDEX, POZVYHLEDAT, BESSELJ
3. Boundary conditions - Calculation of the heat transfer coefficient on the outside of the lining - using criterial equations and equations for radiation heat transfer.
4. Solution of temperature field lining - Stationary temperature field of one-dimensional (plane wall, cylindrical, spherical). The use of iterative method.
5. Energy balance - calculating enthalpy of linings.
6.Trancient heat conduction problems - Solution in infinite plate for various boundary conditions (q = const., Tenv = const; Tsup = const.; Tsup = f (time); Tenv = f (time), etc.).
7. Trancient heat conduction problems - Solution in infinite cilinder for various boundary conditions (q = const., Tenv = const; Tsup = const.; Tsup = f (time); Tenv = f (time), etc.).
8.Calculation of transcendental equations (graphically, numerically), Bessel functions.
9.Solution of trancient heat conduction problems for 3D shapes (cuboid, prism, cylinder).
10. Numerical Methods (method of elementary balances).
11.Macros in MS Excel - View card developer, creating macros, use the controls.
12. Fundamentals of Programming in VBA - Sub / Function, variable declarations, create your own formulas, creating user forms.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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