A Thermodynamic Model of Phosphate Capacity for CaO-SiO2-MgO-FeO-Fe2O3-MnO-Al2O3-P2O5 Slags Equilibrated with Molten Steel during a Top–Bottom Combined Blown Converter Steelmaking Process Based on the Ion and Molecule Coexistence Theory

2011 ◽  
Vol 42 (5) ◽  
pp. 951-977 ◽  
Author(s):  
Xue-Min Yang ◽  
Cheng-Bin Shi ◽  
Meng Zhang ◽  
Jian-Ping Duan ◽  
Jian Zhang
Keyword(s):  
Molten Steel ◽  
Thermodynamic Model ◽  
Converter Steelmaking ◽  
Steelmaking Process ◽  
Coexistence Theory ◽  
Phosphate Capacity

Thermodynamic Model of Calculation of Sulfur Distribution Ratio between B2O3-Containing Slag and Molten Steel

2014 ◽  
Vol 633-634 ◽  
pp. 188-191
Author(s):  
Xiang Zhu ◽  
Yang Li ◽  
Xiao Jian Fan ◽  
Hong Ming Wang ◽  
Gui Rong Li
Keyword(s):  
Molten Steel ◽  
Distribution Ratio ◽  
Thermodynamic Model ◽  
Slag Basicity ◽  
Sulfur Distribution ◽  
Coexistence Theory ◽  
Sulfur Distribution Ratio

A thermodynamic model of calculation of sulfur distribution ratio between B2O3-containing slag and molten steel has been developed on the basis of the ion and molecule coexistence theory. Based on the model, the effects of B2O3 content and slag basicity on the sulfur distribution ratio in 1873K were investigated respectively. The results indicate that the sulfur distribution ratio decreased with increasing the content of B2O3, and when the content of B2O3 exceeds 6%, the sulfur distribution ratio was lower than 2.0. Therefore, in order to ensure the desulphurization ability of slag, the content of B2O3 should be controlled at about 6%. Moreover the sulfur distribution ratio can be increased by increasing the slag basicity.

Variation in Multiphase Flow Characteristics by Nozzle‐Twisted Lance Blowing in Converter Steelmaking Process

2021 ◽  
pp. 2100409
Author(s):  
Ming Lv ◽  
Hang Li ◽  
Xiangdong Xing ◽  
Tengchang Lin ◽  
Shaoyan Hu ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Flow Characteristics ◽  
Converter Steelmaking ◽  
Steelmaking Process

Research on Technology of Smelting Low-Sulphur Steel

2012 ◽  
Vol 581-582 ◽  
pp. 899-903
Author(s):  
Long Kui Jiang
Keyword(s):  
Molten Steel ◽  
Refining Process ◽  
Sulphur Content ◽  
Converter Steelmaking ◽  
Hot Metal ◽  
Steel Smelting ◽  
Steel Refining

Based on feature of low-sulphur steel smelting in PanGang, in terms of optimizing desulfurization technology, reducing resulfurization in converter steelmaking, optimizing desulfurization in LF molten steel refining process and developing RH molten steel refining desulfurization technology. The sulphur content of hot metal can be controlled no more than 0.003%, and that of terminal molten steel can also be controlled no more than 0.005%, which makes the production of low-sulphur steel come true, and the technology route of such steel smelting be established.

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