Aluminum-magnesium-carbon bricks made of AL203 (steel jade, high-quality bauxite clinker, homogenized bauxite, paper pillar stone, etc.), MgO (fused magnesia, sintered magnesia) and graphite as raw materials, resistant to erosion by molten steel: heat Low conductivity, good thermal insulation performance: proper residual expansion, good overall masonry. It is widely used in the wall and bottom of ladle.