以各级别镁砂，电熔为原料，填加有助于粘结炉衬的粘结剂，机压成型。在转炉出钢后修补大小面部位来提高转炉衬使用寿命的产品。
     It’s made from magnesite clinker,fused magnesite as raw material,adding bonding agent,high pressure pressing ,mainly used in repairing converter which to improve service life of furnace lining.