武钢8号高炉投产11年生产实践

重点分析了武钢8号高炉从2009年投产至今11年,在高炉炉型设计、进风面积、煤气利用、炉身黏结等方面的调整变化,通过逐步缩小进风面积确保高炉足够的鼓风动能活跃炉缸,调整中“以风为纲”,调整中心加焦量与边缘布矿量,维持“中心气流适当发展,边缘气流适当抑制”的动态平衡。高炉11年来一直保持着良好的生产节奏,累计利用系数达到2.36 t/(m3·d)。投产11年高炉目前的炉缸状态良好,高炉具备延续长寿的条件。

Practice of No.8 blast furnace put into production in WISCO for 11 years

Adjustment and changes of blast furnace type design, air inlet area, gas utilization and furnace caking were analyzed for No.8 blast furnace in WISCO during 11 years production from beginning at 2009. By gradually reducing air inlet area, sufficient blast kinetic energy was ensured to activate the hearth of blast furnace. Focus on the air flow, amount of central coke and marginal ore distribution were adjusted. Dynamic balance was maintained, which required proper development of central air flow and proper suppression of edge air flow. Good production efficiency of blast furnace was also maintained and cumulative utilization coefficient reached 2.36 t/(m3·d) during 11 years. The hearth of blast furnace was in good condition and also had the condition of long life.