Fyzikální modelování odplynění tavenin v rafinační pánvi

Abstract

The main aim of this thesis is optimisation of aluminium melt refining process by inert gas using physical modelling. A series of experiments were carried out on a physical model of a pilot plant reactor for aluminium refining, which is available in the Laboratory of physical and numerical modelling of the Department of Metallurgy and Foundry of the Faculty of Materials Science and Technology. Experiments were focused on analyses of the influence of selected parameters on the process of aluminium refining by an inert gas. Based on experimental research, with respect to process intensity, optimum operating parameters have been proposed. The first part of this work is devoted to the analysis of aluminium alloys and their practical use. The second part focuses on methods of increasing the purity of aluminium melts, especially on degasification and non-metallic inclusions removal. Also, the attention was focused on the description of methods of physical and numerical modelling of metallurgical processes. The literature analysis dealt with the study of experimental research, with the aim of a definition of influential parameters in the process of refining aluminium melt with the inert gas. Based on the findings, a series of experiments were designed and performed by means of physical modelling. The results of the experiments were used to optimize the operating parameters of the investigated technology with a considering increase in the efficiency of the refining process under operating conditions.