近年来，法国索拉克公司敦刻尔克厂热带钢轧机的产品质量持续上升，成本不断下降。其原因之一是敦刻尔克厂提高了推钢式大型板坯加热炉的炉底寿命，使原平均寿命，即处理量２００×１０４ｔ提高１倍。索拉克公司采用Ｍａｇｍａｌｏｘ系列电熔耐火砖改造炉底，即Ｍａｇｍａｌｏ In recent years, the quality of the products of the hot rolling mill of the French company Scuklak in Dunkirk, France, has continued to rise and costs have been declining. One of the reasons is that the Dunkirk plant has raised the bottom life of pusher-type large slab furnaces, doubling the original average life expectancy of 200 × 104t. The company uses Magmalox series of fused cast refractory brick bottom, that Magmalo