635-0823/01 – Refractory Constructions (ZSK)
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 | 2 | Semester | winter |
| | Study language | Czech |
Year of introduction | 1975/1976 | 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
Students will be able to characterize the fundamental principles of the use of refractory and thermal - insulation materials, characterized by specific types of lining furnaces and heating equipment with regard to production technology in their ongoing and based on the design will be able to lining furnaces and equipment in metallurgy and engineering industries, kilns and furnaces in the ceramic industry, glass furnaces, kilns in the chemical industry and heat in energy.
In addition, students get acquainted with the analysis of phase relationships in refractory materials due to corrosion and mechanical, chemical and thermal stresses that will be able to include in the body of knowledge in the design of structures lining.
The course also introduces the technology of the production of refractory shaped and unshaped materials and repair technologies.
Based on this knowledge, students will be able to not only determine the overall composition of the lining of the aggregation in terms of technological operations, but also suggest lining, which will have the greatest life in the light of the economic budget of the company.
Teaching methods
Lectures
Individual consultations
Tutorials
Project work
Summary
Review of building and constructional materials. Reaction of refractory
materials with corroding agents. Thermal and static calculations of
constructions. Technology of production and repairing of linings. Refractory
constructions. Furnace linings at production and processing of metals. Furnace
linings in the ceramic industry, in the production of building materials and
glass. Furnace and thermal devices linings in the chemical industry, energy and
other branches. Furnaces and thermal devices - putting into operation.
Compulsory literature:
1. ROUTSCHA, G. Refractory materials: Basics – structures Propeties. 2nd Ed. Essen: Vulkan Verlang, 2004. 512 p.
Recommended literature:
Way of continuous check of knowledge in the course of semester
Semestral project: Design of thermal aggregate lining in terms of material and heat - use a one-dimensional heat conduction in a plane wall, cylindrical, spherical. Solution of unidirectional unsteady temperature field in an infinite plate or cylinder for various boundary conditions.
E-learning
In the present study support are available.
Other requirements
Are not additional requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject syllabus:
Lectures
1st The production requirements for lining furnaces and heating equipment.
2nd The principles of the use of refractory materials - draft terms of decision-lining.
3rd Analysis of the consumption of refractory materials in various industrial sectors (metallurgy of ferrous and nonferrous metals,
chemical industry, glass, construction materials and fuels).
4th Basic refractories for furnace structure and characteristics - shape and Unshaped Construction materials, thermal insulation
materials.
5th Thermal linings work - Addressing the temperature field in a time-lining steady and unsteady state, one-sided heating,
heating throughout the volume, continuous and cyclic heating, 1 and 2 Fourier's law, initial and surface conditions.
6th Influence of insulation in the lining, the basic thermal and technical properties of refractory materials (thermal conductivity, specific
heat capacity, viscosity, density, density).
7th Effect of corrosion on the lining and measures for its prevention - study of the interaction between slag and refractory materials
(Application of ternary diagrams), cooling lining.
8th Technology making linings. Linings of dense shaped material, unshaped from building materials, cellular and fibrous
materials. ŽÁROMONOLITY. Anchoring and hanging lining.
9th Construction of linings of metallurgical aggregates (VP, hot blast, pig iron mixer, converter,
tandem furnace, EAF, electric induction furnaces, etc.).
10th Refractory structure in the secondary metallurgy (ladles, tundish + shielding and immersion tube equipment
vacuum treatment of steel, etc.).
11th Construction of furnace linings in ceramic, glass, and power industry (fuel drying, chamber furnace, tunnel
furnaces, shaft and rotary kilns for firing of raw materials, glass melting furnaces).
12th Repair lining - lining repair technology "cold" and "hot" (shotcreting, shotkretování, slag
coating, slag splashing, etc.), ways of increasing the life of furnace linings and thermal devices.
Exercise
1st Statistical analysis of multivariate data, linear and polynomial regression - using the least squares method for approximating the dependencies.
2nd Extended use of built-in features of MS Excel - f-ing IF, LOOKUP, INDEX, MATCH, BESSELJ
3rd Surface conditions - Calculation of the overall heat transfer coefficient on the outside of the lining - the use of criteria
equations and equations for radiation heat transfer.
4th Solution of temperature field lining - Stationary temperature field one-dimensional (plane wall, cylindrical, spherical).
The use of iterative methods.
5th Energy Balance - calculating enthalpy linings.
6th Solution unidirectional unsteady temperature field in an infinite plate for various boundary conditions (q = const.;
TPR = const; tpov = const.; tpov = f (time); TPR = f (time), etc.).
7th Solution unidirectional unsteady temperature field in an infinite cylinder for various boundary conditions (q = const.;
TPR = const; tpov = const.; tpov = f (time); TPR = f (time), etc.).
8th The calculation procedure of transcendental equations (graphically, numerically), Bessel functions.
9th Solution of unsteady temperature field for 3D shapes (cuboid, prism, cylinder).
10th Numerical methods (finite difference method).
11th Using macros in Excel - View card developer, creating macros, use the controls.
12.Z he cost 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
Předmět neobsahuje žádné hodnocení.