Abstract

Electromagnetic technology has been widely used in metallurgical process of high quality steel and alloy material. It can improve the cleanliness of molten steel, ensure the quality of steel and increase productivity. However, electromagnetic smelting seriously affects the high temperature corrosion behavior of molten slag, which not only reduces the service life of refractory materials, but also has a negative effect on the quality of molten steel. In the paper, a resistance furnace with controllable electromagnetic field was design and made, the numerical simulation in combination with the high temperature thermal simulation experiment was applied, the slag properties such as viscosity was investigated under the conditions of high temperature and electromagnetic field, the influence of slag composition and the emulsified metal were discussed. And the slag corrosion behavior on refractories was analyzed by means of the X-ray diffraction and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX). The results show that, the spreadability and viscosity of the molten slag can be improved by optimizing the slag composition and the magnetic intensity; In the electromagnetic field with proper parameters, the slag containing a certain magnetic metal has a relatively large viscosity, show smaller spreading area at the bottom of the crucible and slight infiltration and corrosion on refractory materials.