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| Analysis of chemical compositions of slag affecting #br#
desulphurization in hot metal of COREX process |
| LU Yanan,WU Shengli,WANG Laixin,KOU Mingyin |
(School of Metallurgical and Ecological Engineering， University of Science and
Technology Beijing， Beijing 100083， China) |
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Abstract The COREX process has many advantages, such as the less pollution, the lower energy consumption and the lower dependence on the metallurgical coke, while it still has the disadvantage of the high sulfur level in the hot metal.To improve the desulfurization efficiency in the COREX3000 process, several aspects are studied and practiced.The work focuses on the effects of chemical compositions of slag, such as w(CaO)/w(SiO2)、w(MgO) and w(MgO)/w(Al2O3) on the desulfurization efficiency. The influences of chemical compositions of slag on the desulfurization efficiency and the sulfur distribution ratio are studied through experimental studies, and the optimal chemical compositions of the slag are listed. Comparing the effects of two kinds of basic oxides on the desulfurization efficiency, the binary basicity of slag should be preferentially adjusted within 1.201.35, and then w(MgO) of slag should be controlled. It is also necessary to take care of the appropriate w(MgO)/w(Al2O3) at about 0.800.90.
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| [1] |
LI Si-jun， DU Jin-ke， PENG Yong-xiang， LI Ping， HU Bin. Numerical simulation study on single-point unequilibrium casting for beam blank in Laiwu Iron and Steel Company[J]. CONTINUOUS CASTING, 2020, 45(3): 1-9. |
| [2] |
ZHENG Yuan-shou. High speed production technology of 160 mm× 160 mm continuous casting in Sangang[J]. CONTINUOUS CASTING, 2020, 45(3): 10-13. |
| [3] |
WANG Bingxing，ZHU Fuxian，WANG Chao，LOU Haonan，. Application of oxide metallurgy in high heat input welding steels[J]. Iron and Steel, 2019, 54(9): 12-21. |
| [4] |
WANG Chengyong, MEN Dongpo, CHEN Peng, LI Ziwen. Nonlinear prediction model for caking index based on coal petrology[J]. Iron and Steel, 2019, 54(9): 22-26. |
| [5] |
NIU Lele,LIU Zhengjian,ZHANG Jianliang,ZHANG Zongwang, WANG Yaozu,DU Chengbo. Effect of mineral composition of iron ore on metallurgical properties of sinter[J]. Iron and Steel, 2019, 54(9): 27-32. |
| [6] |
ZHANG Jian. Quantitative analysis of hot metal composition and TiO2 load #br# for effective furnace maintenance in Shougang Jingtang[J]. Iron and Steel, 2019, 54(9): 39-43. |
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