Ultra-low carbon ferrite stainless steel 00Crl2Ti ( % : ≤0. 030C

10. 50-11. 75Cr

6 x C ~ 0. 75Ti) is melted by 90 t K-OBM-S converter - 90 t VOD - 90 t LF - CC process. Production practice show that with increasing free oxygen content in steel (5 〜10) x 10

-6

and blowing argon stirring time ( 1 ~ 12 min)

the yield of titanium decreases; and the yield of titanium by feeding titanium wire in LF is higher than that by adding titanium alloy biscuit in VOD process ； with controlling total oxygen content in steel ≤35 x 10

-6

free oxygen content ≤6 X 10

-6

( Cr

2

O

3

+ FeO + MnO) ≤ 1 % in VOD process

stirring time 5 ~ 10 min

argon flow rate 50 ~80 L/min

and using feeding titanium wire process in LF

the yield of titanium is up to 60% ~ 75%.