首钢股份3号高炉死料柱行为及出铁维护探析

Analysis on Dead Stock Behavior and Tapping System of Shougang's No.3 BF

通过对首钢股份3号高炉炉缸死料柱的受力计算,明确了死料柱的沉浮状态,确定了死料柱根部位置及剪切力最大的位置。在此基础上,根据现场出铁制度和模式,分析了单场出铁及出铁对死料柱行为和炉缸侧壁炭砖侵蚀的影响。结果表明,当未出净铁水量超过1601时,死料柱则由沉坐炉底变为小幅度浮起状态,若此时死料柱透气透液性相对较差,铁口中心下方2-2.5m处的炭砖将受到异常侵蚀。

By calculating the force acting on the dead stock in the hearth of Shougang's No.3 BF,the floating condition of the dead stock,the position of dead stock root and the position suffering the highest shearing force become clear.On this basis,study is made on the influence of single casthouse tapping and its tapping system on the behavior of the dead stock behavior and the corrosion of the carbon bricks on the hearth side wall.The result shows the dead stock will foat up slightly instead of sitting on the bottom when the hot metal heel in the furnace exceeds 160t,and the carbon bricks at the portion 2-2.5 m below the taphole center will suffer erosion greatly if the air and liquid permeability of dead stock is poor.