Experimental determination of sulphide capacities of blast furnace slags with higher MgO contents

Abstract

Sulphide capacity measurements of slag with MgO content up to 18 mass% were carried out at 1713, 1743 and 1773 K to obtain reliable data for the blast furnace process. In the measurement, the slag is equilibrated with copper at a controlled oxygen partial pressure for 24 h. The sulphide capacities are calculated based on the sulphur analyses for both slag and copper.

Sulfide Capacities in the Al2O3–CaO–MgO–SiO2 System

“…A considerable number of investigations were conducted in the Al 2 O 3 (10 mass%)–CaO–MgO–SiO 2 system at 1773 K. The data are found in a satisfactory agreement. Data of sulfide capacity are also available in the Al 2 O 3 (15 mass%)–CaO–MgO–SiO 2 system at 1773 K. These data are in a satisfactory consistency. A number of studies were carried out in the Al 2 O 3 (25 mass%)–CaO–MgO–SiO 2 system .…”

“…The majority of the studies employed gas‐slag equilibration in their experiments while a number of investigation used the copper‐slag equilibration method . A considerable number of investigations were conducted in the Al 2 O 3 (10 mass%)–CaO–MgO–SiO 2 system at 1773 K. The data are found in a satisfactory agreement. Data of sulfide capacity are also available in the Al 2 O 3 (15 mass%)–CaO–MgO–SiO 2 system at 1773 K. These data are in a satisfactory consistency.…”

“…The increasing demand on the higher quality steel has been challenging the steelmaking industry on improving and developing their production matrix. More efficient desulfurization in the process along with precise control of sulfur content in the final product is one of the important tasks to meet this demand . Since its inception, sulfide capacity has been proved to be a useful parameter in optimizing the process of sulfur removal.…”

“…Since its inception, sulfide capacity has been proved to be a useful parameter in optimizing the process of sulfur removal. Extensive studies have been carried out since then to generate data for sulfide capacities of various slags . In view of the extreme importance of the Al 2 O 3 –CaO–MgO–SiO 2 system in both ironmaking and steelmaking, many experimental investigations have been conducted focusing on this system …”

“…The data in the Al 2 O 3 –CaO–MgO–SiO 2 system are due to a number of researchers . The majority of the studies employed gas‐slag equilibration in their experiments while a number of investigation used the copper‐slag equilibration method .…”