南京青龙山水泥厂一台φ2.4×40米干法中空回转窑改造为捷克型立筒预热器窑,使每吨熟料耗标准煤从280公斤下降到170公斤,年节约标准煤5500吨以上,每吨水泥投资仅170元,主要技术经济指标比较先进;又避免了国内旋风预热器易堵塞及一般立筒预热器窑阵料的弊端,值得推广应用。 Nanjing Qinglongshan cement plant φ2.4 × 40 m dry hollow rotary kiln transformed into Czech-type preheater kiln, so that the standard coal consumption per ton of clinker dropped from 280 kg to 170 kg, the annual saving of standard coal 5500 Ton, more than 170 yuan per ton of cement investment, the main technical and economic indicators are more advanced; and to avoid the domestic cyclone preheater blockage and the general vertical preheater kiln material defects, it is worth promoting the application.