Practice of Hot Metal Full Pretreatment and Less-slag Steelmaking in ShouGangJingTang

The hot metal full pretreatment and less-slag steelmaking process constituted a platform to produce clean steel with low cost and rapid pace and also realized a professional production line. The w_[P] can be less than 0.030% at the end of De-P converter and 0.006% at the end of De-C converter. The w_[N] in steel can be less than 15×10⁻⁶ at the stirring station. This production line can make clean steel steadily used for auto sheet or pipeline, for example X65MS. The De-C slag was left in the converter for the next heat and recycled to De-P converter to reduce lime consumption, which has a great benefit for the cost saving.