Coal Selection in 2500 m3 Blast Furnace of Xiangsteel
湘钢2500m~3高炉煤种的选择

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.