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| THERMODYNAMICS OF LIQUID BLAST-FURNACE-TYPE SLAGS Ⅱ.THE APPLICATION OF A NEW BASICITY RATIO TO DESULFURIZATION OF CARBON-SATURATED IRON |
| CHOU YUAN-HSI Institute of Metallurgy and Ceramics;Academia Sinica |
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Cite this article:
CHOU YUAN-HSI Institute of Metallurgy and Ceramics;Academia Sinica. THERMODYNAMICS OF LIQUID BLAST-FURNACE-TYPE SLAGS Ⅱ.THE APPLICATION OF A NEW BASICITY RATIO TO DESULFURIZATION OF CARBON-SATURATED IRON. Acta Metall Sin, 1956, 1(2): 143-154.
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Abstract In the previous paper,a new expression for basicity has been proposed for blast-furnace-type slags.It is the purpose of the present paper to correlate thisbasicity ratio with desulfurization power using the data of Hatch and Chipman,Filer and Darken,and Taylor and Stobo on the distribution of sulfur betweenliquid blast-furnace-type slags and carbon-saturated iron.For this purpose,theactivity coefficient of CaS in liquid blast-furnace-type slags with reference to solidCaS as the standard state has been evaluated as a function of the basicity andthe sulfur content of the slags from existing equilibrium data.With the activitiesof CaS and CaO known,it has been possible to calculate the“theoretical”sulfurdistribution curve by plotting(%S)/[~αS],converted to(%S)=1.50,againstauthor's new basicity ratio.It has been found that the calculated sulfur distribu-tion curve fits fairly well the experimental data of various investigators on thesulfur equilibria between blast-furnace-type slags and metal.This fact seems toprovide an evidence for the usefulness of the new expression for basicity proposedby the author.
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Received: 18 February 1956
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