Melting Properties of Preparing Compound Desulphurizer by Aluminothermy Reducing Caustic Calcined Dolomite

Abstract:

Taken caustic calcined dolomite based compound desulfurizer as the research object, influence of fluxing agent CaF₂, Al₂O₃, SiO₂ and heating agent on the melting temperature of the compound desulfurizer was mainly investigated during its directly reducing process. Fluxing agent SiO₂ and heating agent are the main influence factors, which influence melting temperature of the compound desulfurizer, the next are CaF₂ and Al₂O₃. The mean value of compound desulfurizer melting temperature is respectively 1190.3°C and 1199_{Subscript text}.1°C when the addition amount of SiO₂ and heating agent is respectively 8.33% and 33.55%. With the increase of CaF₂, the mean value of compound desulfurizer melting temperature decreases gradually, however, which increases first and then decreases with the increase of Al₂O₃.The conditions of the lowest melting temperature about the compound desulfurizer is A₄, B₁, C₁, D₂, namely 9% CaF₂ + 0% Al₂O₃ + 8.33% SiO₂ + 33.55% heating agent.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 3138-3142
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.3138
• Online since: January 2013
• Authors: Shi Jun Wang, Xue Sen Zhang, Chang Cheng Zhou, Jie Li, Jun Pan
• Keywords: Aluminothermy Reduction, Caustic Calcined Dolomite, Compound Desulfurizer, Melting Properties

References

[1] WeiXuan Wu, Chao Zhang, Kai Liu, et al: Steelmaking, Vol28-3(2012), p.11 In Chinese.

[2] Baojing Zhang, Chaofa Zhang: Metal materials and metallurgy engineer, Vol39-2(2011), p.54 In Chinese.

[3] Zhouhua Jiang, Heyan Zhang, Dongping Zhan, et al: Journal of North eastern University (Natural Science), Vol23-10(2002), p.952 In Chinese.

[4] Wanqing Zhang: Research on Iron & Steel, Vol37-6(2009), p.5 In Chinese.

[5] Fengyi Yan, Mantang Song, Guiyu Zhang, et al: Iron and steel, Vol38-2(2003), p.13 In Chinese.