孙彦辉, 钱宇婧, 李啸磊, et al. A Prediction Model for Sulfur Partition Ratio of LF Slag for Low-Carbon Low-Silicon Al-Killed Steel Refining[J]. Special Steel, 2011, 32(2): 1-4.
孙彦辉, 钱宇婧, 李啸磊, et al. A Prediction Model for Sulfur Partition Ratio of LF Slag for Low-Carbon Low-Silicon Al-Killed Steel Refining[J]. Special Steel, 2011, 32(2): 1-4.DOI:
根据钢厂100 t BOF-吹氩-LF-RH-Ca处理流程生产优质深冲(DDQ)级深冲热轧带钢SPHE(%:≤0.07C、≤0.03Si、0.20~0.30Mn、≤0.020P、≤0.010S、0.02~0.06Als)时Ca处理过程S含量过高的情况
通过KTH硫容量模型
分析了CaO/SiO
2
、Al
2
O
3
和MgO对精炼渣硫分配比LS的影响
建立了CaO-MgO-SiO
2
-Al
2
O
3
四元渣系脱硫模型
优化LF脱硫的精炼渣成分。结果表明
使用优化后的精炼渣(%:50CaO、6MgO、≤5SiO
2
、30~35Al
2
O
3
)
LF精炼钢水的脱硫率≥80%。模型预测值与实测值误差为±5%的占80%。
Abstract
According to the situation of over-high S content in deep drawing hot rolled DDQ class SPHE strip steel (%: ≤O. 07C
≤0. 03Si
0. 20 〜0. 30Mn
≤0. 020P
≤0. 010S
0. 02 ~0. 06Als) produced by 100 t BOF-argon stir- ring-LF-RH-Ca treatment flow sheet
the effect of CaO/SiO
2
A1
2
O
3
and MgO on refining slag sulfur partition ratio Ls is analyzed by KTH sulfur capacity model and the desulphurization model of CaO-MgO-SiO
2
-Al
2
O
3
quaternary slag series is established to optimize the ingredient of LF refining slag for desulphurization. Results show that after using optimizing refining slag (%: 50CaO
6MgO
≤5SiO
2
30 - 35Al
2
O
3
)
the desulphurization ratio of LF refining liquid
steel is ≥80%
the ±5% error between prediction value by model and measured value makes up ≥80% of total prediction value.