Analysis on the causes of over-erosion of bricks in refined ladle slag line
We analyze the erosion mechanism of magnesia carbon bricks from the aspects of slag, carbon content and carbon structure in magnesia-carbon bricks, raw materials of magnesia-carbon bricks, and additives in MgO-C Brick, and get the erosion of magnesia-carbon bricks. The damage process mainly includes the following: oxidation-decarburization-porosity-erosion-erosion-shedding-damage. In this process, due to the oxidative removal of carbon, the brick structure becomes loose and brittle, and it is worn out under the erosion of molten steel. At the same time, due to the oxidative removal of carbon and the loose brick body, the slag penetrates into the decarburized layer, and Reacts with magnesia particles. 1. Erosion of refined slag The ladle undergoes LF and VD refining treatment, and is affected by arc light, vacuum and steel slag erosion, which accelerates the erosion of the slag line. Calcium oxide, silicon dioxide and other substances in the slag chemically react wit...