Možnosti ovlivnění odfosfoření v kyslíkovém konvertoru

Abstract

This diploma thesis focuses on evaluating the influence of selected technological factors on the efficiency of phosphorus removal during steel production in an oxygen converter. The primary aim is to assess the dephosphorisation efficiency when using different types of lime-based additives – specifically dolomitic lime and steelmaking agglomerate – and to analyse the potential impact of the construction design of oxygen nozzles on the course and final effectiveness of dephosphorisation. Secondary objectives include comparing additional potential factors affecting the dephosphorisation process in the oxygen converter, such as the type of steel scrap, wear of the converter lining, and the dependence of dephosphorisation on the manganese content after the main blow. The results of this work provide recommendations for optimising operating parameters to improve the quality of the final steel product.