APPLICATION OF HIGH EFFICIENCY AND LOW EMISSION SHUTDOWN TECHNOLOGY IN NO.8 BF OF HAN STEEL

Blowing off with discharging is the premise operation of overhauling and mid-repair in blast furnace,and the efficient and safe operation is a basic requirement in lowering charge level.With the increasing demand for the environmental protection,how to reduce diffusion and noises has become the core task in the operation.The exhaust-time to the air has been reduced and a efficient,safe and environmentally-friendly lowering charge level is realized by the application of the comprehensive technology such as inert gas protection,matching of blast volume and water spraying,raising top pressure during tapping in No.8 blast furnace of Han Steel.