They are: improving the material and fuel qualities by adopting beneficiated materiel,advancing blast temperature,increasing coal injection ratio,actualizing clean production for promoting utilization of resources and adopting dry dusting and TRT electricity generating technology in the big blast furnaces.

By making use of the technical advantages of the 750 m3 BF at SISG, improving its operation, enhancing the quality of the charges and coke for it, and optimizing its management, its coal injection ratio was appreciably improved.

The process measures to raise coal injection ratio in recent years are introduced,which lay a foundation for stabilizing quantity of coal powder and raise coal injection ratio of large-scale blast furnace.

Research on the carbonaceous substance of dust and sludge in BF at large pulverized coal injection rate;

Examination of burning-rate accelerator of SYP coal injection in the Xinlin Steel

According to the analysis of the base of strengthening BF smelting,measures of rational upper-bottom relief,oxygen enrichment and coal injection as well as strict management in operation and raw materials and fuels were taken,realizing the goal of strengthening BF smelting.

Practice on pulverized coal injection and reducing coke consumption in No.2 blast furnace of Shougang;

The fourteen years' practice of coal powder injection in 350 m~3 blast furnace in rviewed.

The coal rate is being increased in recent years owing to the high economics of coal powder injection.

Influence of Increasing PCI Rate on Characteristics of Tuyere Coke in Blast Furnace;

Design Characteristics and Practice of PCI for Huaigang BF;