Title

Electromagnetic Slag Control in the Steel Making Process

Electromagnetic Slag Control in the Steel Making Process

Authorship

BENDERBERGOLD, WOLFGANG; MASSMANN, PAUL

BENDERBERGOLD, WOLFGANG

I am this author

MASSMANN, PAUL

I am this author

DOI

10.5151/2594-5327-C00163-2585-2598

Downloads

Abstract

The electromagnetic measuring method for direct slag detection at discharging steel melts from vessels is already used at more than 200 casting machines with approx. 1,500 vessels world-wide. With advanced electromagnetic measuring systems, the slag management can be optimized in the steel making process. At first, the converter slag carry-over can be reduced while tapping and herewith a reduction of the aluminium consumption becomes possible. At the electric furnace deslagging of ladles can be avoided by the reduction of the slag carry-over. Also, by the exact determination of the slag quantity on the ladle, the necessary additives can now be utilised in an optimal way. For that, an electromagnetic measuring system is available, which is connected at the EMK-lance and exactly determines the slag thickness. At the continuous casting machine, the proofed slag detection system is used again. By that, the slag carry-over will be reduced and the yield is increased. With a new electromagnetic measuring procedure for the recognition of residual steel in the tundish, the casting process can be optimized especially at composite casting but also at the end of the sequence regarding mixing zone and yield. According to reports on the experiences made in different international steel mills, the various systems are described in their function and advantages.

The electromagnetic measuring method for direct slag detection at discharging steel melts from vessels is already used at more than 200 casting machines with approx. 1,500 vessels world-wide. With advanced electromagnetic measuring systems, the slag management can be optimized in the steel making process. At first, the converter slag carry-over can be reduced while tapping and herewith a reduction of the aluminium consumption becomes possible. At the electric furnace deslagging of ladles can be avoided by the reduction of the slag carry-over. Also, by the exact determination of the slag quantity on the ladle, the necessary additives can now be utilised in an optimal way. For that, an electromagnetic measuring system is available, which is connected at the EMK-lance and exactly determines the slag thickness. At the continuous casting machine, the proofed slag detection system is used again. By that, the slag carry-over will be reduced and the yield is increased. With a new electromagnetic measuring procedure for the recognition of residual steel in the tundish, the casting process can be optimized especially at composite casting but also at the end of the sequence regarding mixing zone and yield. According to reports on the experiences made in different international steel mills, the various systems are described in their function and advantages.

Keywords

escória, controle eletromagnético, lingotamento contínuo, aço, detecção de escória

escória, controle eletromagnético, lingotamento contínuo, aço, detecção de escória