徐韬, 姜新平, 王强, et al. Application Practice of Carbon-Aluminum Top Slag-Modifier in Low Carbon Steel Production[J]. Special Steel, 2021, 42(5): 26-29.DOI:
The modification of ladle top slag is an important technological method to prevent secondary oxidation of molten steel
deep deoxidization of molten steel and optimize the removal of inclusions in molten steel. By using 120 t BOF- LF-Plate production line to produce low carbon aluminum killed steel SPHC and 330CL
in LF refining with using carbon- aluminum modifier (/% : ≥35Al
2
O
3
15~30C
5~15Al
≤5SiO
2
6 - 12CaF
2
)
as compared with using carbon-free top slag modifier (/% : 40 ~ 60Al
2
O
3
≥2
0
Al
2 ~1
0
CaO
≤10SiO
2
)
liquid N increment dicreases from 0.000 5% ~ 0.001 5% to ≤0. 001%
rate of desulphurization increases from 40% to 45%