基于低成本炼铁过程控制的研究实践

Research Practices in Low-Cost Ironmaking Process Control

新冶钢"实施低成本"战略以来,铁前系统紧紧围绕公司生产要求,在外部条件劣化的背景下,始终围绕高炉的稳定顺行为基本方针,不断优化原、烧系统配矿方案;高炉通过加强原燃料管理,不断优化炉料和燃料结构,提高烧结矿、块矿和焦丁比例,不断优化高炉操作制度、提高煤比和富氧率,实现了高炉合理的煤气流分布和较高的煤气利用率,保持了高炉的长期稳定顺行;烧结固体燃耗、高炉燃料比等技术经济指标及工序制造成本不断降低,基本达到了经济炼铁的目标。

The practice of the process control of low-cost ironmaking in Xinye Iron and Steel Group Co.was summa-rized.To achieve the goal of low cost of ironmaking,each department of the ironmaking plant made great efforts. On the basis of stable and smooth operation of BF,several key measures have been taken including optimization of ore blending of sintering,strengthening management of ore before charging,increase in the ratio of sinter,lumpy ore and nut coke in every charging batch,and enhancement of the ratio of pulverized coal injection and enriched oxy-gen.Via those measures,reasonable gas distribution and efficient gas utilization in the BF are realized,which leads to the smooth and stable operation of BF,low fuel consumption of sintering and BF,and decrease of other manufac-turing cost,thereby achieving the target of economic ironmaking.