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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.
The ash melting point, grindability index, ignition point explosiveness, fluidity, combustibility and reactivity of pulverized coal injected from 9 blast furnaces in Xiangtan Iron and Steel Co., Ltd. were studied. Various properties of anthracite and bituminous coal were evaluated. Coal program. The conclusion is: (1) The bituminous coal is the most suitable for constant bituminous coal injection, Weihua second, the burning rate of both coal reached more than 85%; anthracite in oceanic anthracite, Hunan anthracite anthracite and Loudi Xing Star washed coal three anthracite S content is low, the burning rate is above 70%, with high grindability, good flowability, ash melting temperature is also high, suitable for blast furnace injection. (2) According to the principle of coal blending , Recommended two kinds of coal blending program: Hengda bituminous coal + Xiang Yin degree + Baisha, Weihua bituminous coal + Xingxing wash coal + oceanic anthracite.