Safonov V. The theory and technology in the steel ladle processing module

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0510U000371

Applicant for

Specialization

  • 05.16.02 - Металургія чорних і кольорових металів та спеціальних сплавів

22-04-2010

Specialized Academic Board

Д 11.052.01

Essay

Object of research is a technological process of ladle treatment of liquid metal in the steel-making module. A purpose is perfection of technology of refining and heating of metal during ladle treatment within the framework of the modern steel-making module specialized mini metallurgical factory by rational combination of operating parameters of and complex influence of physical and chemical, hydrodynamic and thermo-physical processes of the combined energy. Dissertation is directed for development of new theoretical pictures of processes of the second oxidization, metal desulphurization, co-operating of voltaic arc with the surface of refined slag at interfusion of fusion inert gas, conducts of slag in a ladle at a vacuum treatment, necessary for creation modern standards of domestic equipment in a complex with technology of ladle treatment of steel. The general method of researches is based on methodology of analysis of the systems, the methods of eventual elements and planning of experiment, and also theories of similarity. These researchers are executed taking into account the substantive provisions of theory of metallurgical processes, physical and chemical mechanics of steel melting processes and theory of heat conductivity. For research of quality of steel applied modern industrial devices and settings. The design of hydrodynamic and thermo-physical processes of ladle metallurgy and statistical processing of data is conducted with the use of PC.Author completed methodological study of the principles of combining the technological parameters of the external exposure and the harmonization of technical equipment parameters. Mathematical modeling with the help of modern software package with the hydrodynamic calculation modules of ANSYS. Helped to evaluate the influence of the intensity of argon injection purge and placement of elements to the temperature deviation. For the first time experimentally the mechanism for the transport of oxygen through the layer of slag during the refining of the melt mixing with a high intensity of blowing an inert gas in the steel ladles. Transfer of oxygen on the border of slag-metal jet beads made of steel, which are formed by the explosion of gas bubbles at the melt surface, oxidation in the working space of the unit and after the fall under the influence of gravitational forces at the interface. Author developed the engineering that used in the design, guarantee tests, commissioning and subsequent work in the mode line production equipment and technology ladle refining of steel. Sphere of application - metallurgy.

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