Evaluation of fluxing agents effect on desulphurization in secondary metallurgy under plant conditions

Abstract

In the steel industry, a number of fluxing agents based on Al2O3 is commonly used. They are produced in different forms. This paper deals with plant results and experiences with the usage of briquetted and sintered fluxing agents for slags based on Al2O3. Proper plant heats were processed under conditions of steel plant Vítkovice heavy machinery a.s. during production of steel S34MnV by specific technology: EAF→LF→VCD. During experiments, the basic parameters influencing the steel desulphurization were monitored. Obtained results allow us to make a basic comparison of briquetted fluxing agents produced from secondary raw materials and of sintered fluxing agents, which are produced from pure raw materials.

Keywords

• steel
• secondary metallurgy
• desulphurization
• fluxing agents
• slag regime