TBM at China Steel

BOF size:  260 t

# TBM tuyeres:  10

Stirring gases:  N2 and Ar

Stirring rates:  0.03 ~ 0.1 Nm³/tHM/min

Oxygen lance tip:  5 holes / 15°

Initial Phosphorous:  1000 ppm

Final Phosphorous:  120 ppm

BOF campaign lifetime:  ≈ 5,000 heats

TBM lifetime:  ≈ 5,000 heats

Valve stations:  individual flow/pressure control