The original process to produce 300 series stainless steel at steel works is 140 t EAF-150 t AOD two step method

and with charging partial low nickel high phosphorus pig iron

the EAF end [ P

]

is 450 x 10

-6

. In order to decrease EAF end [P

]

the improved process-60 t Consteel arc furnace + 140 t EAF-150 t AOD flow sheet is adopted. With charging low nickel high phosphorus pig iron in 60 t Consteel arc furnace

its end [ P

]

is ≤250 x 10

-

6

mixing with 85 t end [ P

]

450 x 10

-6

EAF liquid

the [P

]

before AOD refining is ≤360 x 10

-6

. With using new developed process

the tap-to-tap time reduce by 10 ~ 30 min

the phosphorus content in liquid decreases to less than 360 x 10

-6

from original 450 x 10

-6

the product quality of stainless-steel increases and the production cost decreases obviously.