随着锅炉单机容量和介质参数的提高以及锅炉运行特点的变化,各种新型轻质砖和不定形耐火材料逐渐出现。六十年代后期,不定形耐火材料开始较普遍地代替了传统的砖砌重型炉墙。护板框架式混凝土炉墙和敷管式混凝土炉墙相继在世界问世并得到较快发展。 With the increase of the single boiler capacity and medium parameters as well as the change of boiler operation characteristics, various new lightweight bricks and monolithic refractories gradually emerged. In the late 1960s, monolithic refractories began to replace traditional brickwork heavy-duty furnace walls more generally. Concrete framed concrete furnace walls and tubular concrete furnace walls have come out in the world one after another and developed rapidly.