湘钢2500 m3高炉煤种的选择

对湘潭钢铁公司9种高炉喷吹煤粉的灰熔点、可磨性指数、着火点爆炸性、流动性、燃烧性以及反应性进行了研究，评价了无烟煤和烟煤的各种性能，推荐了合理的配煤方案. 得出结论为：(1)烟煤中恒大烟煤最适宜喷吹，威华次之，两种煤的燃烧率都达到85%以上；无烟煤中洋洋无烟煤、湘阴度无烟煤和娄底兴星洗沫煤3种无烟煤的S含量低、燃烧率都在70%以上，具有较高的可磨性，流动性能好，灰熔融温度也高，适合高炉喷吹. (2)根据配煤原则，推荐两种配煤方案：恒大烟煤+湘阴度+白沙，威华烟煤+兴星洗沫煤+洋洋无烟煤.

Coal Selection in 2500 m3 Blast Furnace of Xiangsteel

Based on the physical and process properties of 9 kinds of pulverized coal in Xiangsteel,including ash fusion point,grindability index,ignition point,explosibility,fluidity,combustibility and reactivity,all the properties of bituminite and anthracite coals are evaluated,and reasonable options recommended.It is concluded that(1) Hengda is the best kind of bituminite to be used in Xiangsteel blast furnaces,Weihua bituminite the next choice.Their combustion rates are both above 85%.Because of low sulphur content,combustion rate over 70%,high grindability,good fluidity and high ash fusion temperature,Yangyang,Xiangyindu and Xingxing anthracite are suitable to blast furnace injection.(2) In accordance with the principle of coal blending,two options are recommended:mixture of Hengda,Xiangyindu and Baisha,and mixture of Weihua,Xingxing and Yangyang.