Use light weight insulation brick and dense refractory fire brick for the permanent lining of refining ladle can achieve good energy saving performance and significant economic benefits
Dense refractory fire brick mainly play the role of safety lining to prevent the occurrence of accidents when the working lining of ladle is corroded. In the past, most steel mills used clay bricks as permanent linings. In aluminosilicate refractories, the content of Al2O3 and the apparent porosity of the product are the decisive factors affecting the slag resistance. The increase of Al2O3 increases the slag resistance; the apparent porosity decreases and the slag resistance increases. Among the two factors of Al2O3 content and apparent porosity, the apparent porosity has the most obvious influence on the slag resistance of the product. Therefore, high alumina bricks are selected as the material to compensate for the insufficiency of using clay bricks as safety linings.
In addition to being used as a permanent lining for refining bales, lightweight insulation bricks and dense refractory fire bricks can also be used in other thermal furnaces as safety thermal insulation lining materials, and can also be used as furnace linings in thermal equipment in building materials, electronics, and chemical industries, etc. Their application is wide.
