Techno-economic indicators such as coke ratio equivalent and utilization factor have been improved based on finding charge rules of bell-less BF top, optimizing operating and adjusting tuyere layout.

• 通过实践摸索出适合无料钟炉顶操作的布料规律,优化操作制度,调整风口布局,使高炉综合焦比、利用系数等各项技术经济指标明显提高。