KINETICS OF DESULPHURIZATION IN PERMANENT CONTACT OF SLAG AND STEEL

The curve of % S vs reaction time is described quantitatively based on the electrochemicalmodel directly deduced from the principle of electrochemistry as well as the given method forcalculating the initial oxygen potential along slag/steel interface.The calculated data is ingood agreement with the experimental results.During desulphurization,both L~* and L,the sulphur partition along the interface andthat in the bulk,go up in association with the descending of oxygen potential along interface.The plot of L~* against reaction time follows a parabolic curve,while that of Lis ofhyperbola type.Correspondingly,on curves of driving force parameter vs reaction tone,eithercalculated or experimental,a hump occurs.