Through adopting the technical measures such as local tuyere blowing above iron notch, burning iron notch with rich oxygen lance, tapping from iron notch, discharging slag and hot metal timely, adding coke in concentrative and de-concentrative forms and drilling the tuyere timely and so on, the accident of hearth chill was treated effectively.

The Automatic Control System of the 120 Tons Converter Lance and its Familiar Obstacle with Examination;

Design & trial of protective coating sprayer of oxygen lance;

Improvement and application of converter oxygen lance in No.2 Steel-making Plant;

Revamp of oxygen lance nozzle and oxygen supply system of converter in Tiangang;

Practice of operating Shuigang No.3 BF's oxygen-enriched blast;

Study of low pressure and high flux membrame of hollow fiber in oxygen-enriched burn;

Experiments and Numerical Simulation on Oxygen-enriched Combustion and Direct Ignition of Pulverized Coal;