Physical Modeling of Slag Penetration on the Refractories in a Static Magnetic Field
The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology, Wuhan, Hubei 430081/China
Revision 29.06.2018, 30.07.2018
Volume 10, Issue 4, Pages 79 - 86
Abstract
Alumina based refractory is the important lining material in the process of steelmaking, and slag corrosion is one of the main forms of refractory wear. Electromagnetic feld will affect the interface behaviour between refractories and molten slag because the molten slag has certain conductivity, meanwhile the wettability between refractories and molten slag is an important factor affecting slag corrosion. Therefore, a method of simulation experiment at room temperature was adopted, in which the molten slag was simulated by saturated NaCl solution composite, and alumina and resin materials were selected to simulate refractories in the static magnetic feld, the effect of magnetic fux density on the slag penetration was investigated. The results showed that the effective electromagnetic damping formed in the static magnetic feld, which can prevent the penetration of the molten slag to refractory materials. The higher the magnetic fux density is, the shallower the penetration will be, and the weaker the electrophoretic effect is. Furthermore, the inhibitory effect of slag penetration to the smaller pores is more obvious in the static magnetic feld with same magnetic fux density. It is indicated that a static magnetic feld can effectively regular or control the interface behaviour between refractory and molten slag to prolong the service life of refractories.March 2018
Keywords
static magnetic feld, slag penetration resistance, physical modeling,electromagnetic damping
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