莱钢3200m^3高炉高渣比操作实践

Operation Practice of Laiwu Steel’s 3 200 m^3 Blast Furnace in High Slag Ratio

针对铁矿石品质下降,品位降低,渣比上升的问题,通过优化布料制度、送风制度,降低烧结矿低温还原粉化性能,开发炉缸液面控制技术等措施,在高渣比原料条件下,莱钢3200m3高炉保持了长期稳定顺行,在综合品位较开炉初期下降1%的原料条件下,主要技术经济指标保持了不下降。

Because of low quality of the iron ores and downgrading, the slag ratio of Laiwu Steel’s 3 200 m3 BF increased. By optimizing the distribution system and blowing-in system, reducing the low temperature reduction degradation index of sinter ore, developing the control technologies for the furnace hearth liquid level and other measures, the 3 200 m3 BF kept stable smooth operation for long time, without reducing main technical and economic indexes in the condition of comprehensive grade decreasing by 1% comparing with that in early days of starting-up.