wanhaorefractory

  The oxidation of ladle slag line brick is mainly carbon oxidation, including gas phase oxidation, liquid phase oxidation, indirect oxidation and the influence of porosity. Gas phase oxidation refers to the direct oxidation of carbon, which occurs when graphite coexists with air (O2), water vapor (H2O) and carbonic acid at high temperature. Liquid phase oxidation refers to the oxidation of carbon caused by iron and manganese oxides in the slag. Generally, with the increase of total iron content in the slag, the damage rate of magnesia carbon furnace lining brick will increase. In this process, with the formation of decarburization layer on the surface of carbon containing products, the slag is easy to penetrate and react, resulting in the loose structure of lining brick and accelerating the damage of products. Indirect oxidation is the reaction between MgO and carbon at high temperature to form decarburized layer, which leads to the deterioration of ...