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对太钢现在使用的廉价清徐煤基础性能进行系统研究,探讨高炉喷吹清徐煤替代高平无烟煤及璐安贫瘦煤的可行性.通过对清徐煤的12种性能的检测,得出清徐煤具有以下特点:燃烧性及反应性强,发热值及灰熔融特性温度、流动性好,无爆炸性;但含硫较高,洗煤含锌低,未洗煤含锌高.通过混煤完全可以达到高炉喷吹的标准.应用FactSage软件解析配入过高的清徐煤容易风口结渣的原因,并提出相应的建议.实验室研究及现场的结果认为,清徐煤可通过混煤的方式喷入高炉中,但不易配比过高,替代无烟煤贫瘦煤比例不易超过20%.
The basic properties of low-cost Qingxu coal currently used in TISCO are systematically studied and the feasibility of blowing Qingxu coal into the blast furnace to replace Gaoping coal and Lu’an lean coal is explored.Through the testing of 12 properties of Qingxu coal, Qingxu coal has the following characteristics: Combustibility and reactivity, heat value and ash melting temperature, good fluidity, no explosive; but higher sulfur content, low coal washing zinc, unwashed coal zinc high. By mixing coal completely Which can reach the standard of blast furnace injection.Using FactSage software to analyze the reason of excessive slagging of Qingxu coal with excessive feeding and put forward corresponding suggestions.The results of laboratory research and on the spot show that Qingxu coal can be mixed with coal Way into the blast furnace, but not easy to match the ratio is too high, replace lean anthracite lean ratio is not easy to exceed 20%.