Surface Structure of Nonoxidizing Slags Containing Sulphur |
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| Authors: | R. E. Boni G. Derge |
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| Affiliation: | 1.Research Metallurgical Engineer,Timken Roller Bearing Co.,Canton,USA;2.Jones and Laughlin Professor of Metallurgical Engineering,Carnegie Institute of Technology,Pittsburgh,USA |
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| Abstract: | Application of surface tension measurements has been made to molten silicates in order to determine the effect of sulphur upon the surface tensions of synthetic blast furnace slags. In melts with the same molar ratios of Al2O3 + SiO2 to the basic oxides BaO, CaO, and MgO, the surface tensions increase in the order of oxides listed. Sulphur lowers the surface tensions of the basic BaO, basic CaO, acid BaO, acid CaO, and acid MgO slags in that order; and the concentration of excess sulphur at the slag surface increases in this same order of slags. The rate and amount of desulphurization of iron by these slags is favored by a low excess surface sulphur in the slag. |
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