南京化肥厂硫酸一车间新建的一座带有内装式废热锅炉的耐火混凝土大型沸腾炉,已于1972年6月投产。这台沸腾炉直径8米,日产硫酸约430吨。炉子结构分三层:里层为耐火混凝土预制块,中层珍珠岩粉,外层是普通水泥预制块,内扎钢筋。一般耐火混凝土最好使用矾土水泥,如用硅酸盐水泥不能超过15％,水份不超过10％。而这座沸 A fertilizer plant in Nanjing, a new sulfuric acid plant with a built-in waste heat boiler refractory concrete large boiling furnace, has been put into operation in June 1972. The boiling furnace diameter of 8 meters, Nissan sulfuric acid about 430 tons. Stove structure is divided into three layers: the inner layer of refractory concrete prefabricated block, the middle perlite powder, the outer layer is an ordinary cement prefabricated block, built bar. Generally, it is best to use alumina cement for refractory concrete. For example, Portland cement can not exceed 15% and water content does not exceed 10%. And this boil