本文总结了利用热风炉废气干燥煤粉和K-M防爆装置等一系列防爆措施,进行高压无氮保护喷吹可燃基挥发份15～18％的烟煤。经8个多月的生产实践证明,喷吹安全,满足生产要求,改善了炉况,促进了高炉顺行,获得了好的喷吹效果,煤焦置换比达0.75,预计年节约价值28万元。 This paper summarizes a series of explosion-proof measures, such as the use of hot-blast furnace exhaust gas to dry pulverized coal and K-M explosion-proof device, to carry out high-pressure nitrogen-free protection and injection of 15-18% bituminous coal with combustible base volatile matter. After more than eight months of production practice has proved that the safety of injection to meet the production requirements and improve the furnace conditions, and promote the smooth blast furnace, get a good injection, char replacement ratio of 0.75, the estimated annual saving value of 280,000 yuan.