Abstract
Experimental studies have been conducted on the desulphurization of molten iron, with different initial contents of both oxygen and carbon, in CaO crucible after adding Al or Al alloys such as Al-B, Al-Si, Al-Ba, and Al-Zr.
Desulphurization rate is shown to be affected by initial oxygen and carbon concentrations and to be significantly accelerated by the addition of boron with Al. These experimental results are interpreted based on the slaging reaction on the crucible wall and by the thermodynamic equilibrium between the crucible wall and the iron melt.
