Abstract
Synthetic slags are used during steel treatment in the ladle from the viewpoint of effective refinement. Their basic task is formation of active slag for improvement of kinetic conditions of refining processes. In the steel industry, a number of synthetic slags based on Al 2 O 3 are used which are produced from natural or secondary raw materials in different forms. However, the use of synthetic slags is influenced by the choice of used raw materials, by production technology and by final chemical composition. This paper shows plant results and experience with the utilization of briquetted synthetic slags based on Al 2 O 3 and containing different amount of Cr 2 O 3. Trial plant heats were realized during steel treatment under the conditions of steelwork VITKOVICE HEAVY MACHINERY a.s. The main aim of these heats was assessment of the plant results with utilization of two types of synthetic slags with different chromium content and the evaluation of the increase of chromium content in steel as well as the course of desulphurization during steel treatment.
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