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| Desulphurization Dynamics Mechanism of Blast Furnace Slag With Medium Titanium and High Alumina Content |
| ZHANG Shu-hui,MU Hong-wang,SUN Yan-qin,L Qing |
| Metallurgy and Energy School, Hebei United University, Tangshan 063009, Hebei, China |
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Abstract On the basis of the compositions of blast furnace (BF) slag at field, the desulphurization dynamics process was researched for BF slag with medium titanium and high alumina content, which was fabricated from pure chemical agents. The dynamics parameters of desulphurization were obtained. Results show that the sulfur content in liquid iron (w(［S］)) decreases with the elongation of desulphurization reaction time when the temperature is constant. Under the experimental conditions, the desulphurization process of BF slag with medium titanium and high alumina content belongs to second-order reaction, the restricted step of which is sulfur diffusion in the fused slag. The mass transfer coefficient (βS) rises with increasing the reaction, and the diffusion activation energy(ED) of sulfur element in fused slag is 127.03kJ/mol.
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Received: 22 December 2011
Published: 05 September 2012
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| [1] |
YAO Jia-bin,LIU Weguo,JU Jiantao,XING Xiangdong,AN Jialiang. Study on desulphurization capacity of CaO-SiO2-MgO-Al2O3-BaO slag systems[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(3): 280-286. |
| [2] |
YU Peng-fei，LIU Xiao-liang，ZENG Jia-qing，LIN Teng-chang，YANG Li-bin. Water simulation on mixing of bottom blowing parts with non equilibrium gas supply in converter[J]. Iron and Steel, 2018, 53(6): 39-46. |
| [3] |
ZHANG Kang-hui，ZHANG Yan-ling，WU Tuo. Kinetics of hot metal desulfurization using CaO-SiO2-Al2O3-Na2O-TiO2 slag[J]. Iron and Steel, 2018, 53(11): 22-28. |
| [4] |
LIU Xiao- liang,ZENG Jia- qing,MA Deng,YANG Li- bin,WANG Jie,DONG Rui. Influence of bottom blowing gas supply mode on bath stirring in converter[J]. , 2017, 29(12): 990-996. |
| [5] |
ZU Gang,LI Jie,LI Bao- wei,WANG Jie- liang,YANG Zhong- yu. Reaction kinetics calculation of low grade sulphur concentrate roasting under oxygen enrichment[J]. Chinese Journal of Iron and Steel, 2015, 27(12): 16-24. |
| [6] |
WANG Yu,GUO Xu,XIE Bing,DIAO Jiang,WANG Guangen. Dissolution Kinetics of Lime in the Slag of Converter Dephosphorization[J]. Chinese Journal of Iron and Steel, 2011, 23(05): 8-10. |
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2012, Vol. 47 
