莱钢3#1080 m3高炉低成本护炉操作实践

摘要

对莱钢3#1080 m3高炉炉缸局部异常侵蚀护炉操作实践进行了总结。采取堵风口控冶强、风口喂钛线、配加钛球、提高炉温等强化护炉措施,保持炉缸侧壁温度稳定在400℃以下,实现高炉的安全生产；同时运用强化冷却、灌浆造衬等护炉手段以及优化操作制度、加强关键参数控制,优化了各项技术经济指标,平均燃料比523 kg/t,实现了低成本护炉。%　　This article summarized furnace maintenance practice of local abnormal erosion of Laiwu Steel’s No.3 1 080 m3 BF hearth. By strengthening furnace protection measures such as blocking the tuyeres for controlling smelting intensity, feeding Ti-wire from the tuyere, adding titanium ball and increasing furnace temperature, the hearth’s side-wall temperature keep stable below 400 ℃. The blast furnace realized safety production. At the same time, using intensive cooling, stacking lining by grouting and other furnace maintenance means as well as optimizing operation system, strengthening the control of key parameters, the technological and economic indexes were optimized. The average fuel ratio was 523 kg/t, realizing furnace maintenance with low cost.