INFLUENCE OF CARBON, SILICON AND MOLYBDENUM ON THE SEPARATING AND EMULSIFYING BEHAVIOR OF STEEL AND SLAG

The influence of C, Si, and Mo on the surface tension of Armco iron, a nd on the interfacial tension between Armco iron and a 40%CaO/40%SiO2/ 20%Al2O3 slag at 1550 degrees C has been investigated. Surface tension was determined according to the drop weight method, and the interfaci al tension by the drop detachment method. Based on these measurements, ternary interfacial tension diagrams are set up, which enable the sep arating and emulsifying tendencies of the related steel/slag/gas syste ms to be predicted, This is followed by the calculation of the meniscu s radius as a function of interfacial tension in continuous casting, t ogether with the assessment of its effect on lubrication.