Effect of Al2O3 and CaF2 on Melting Temperature of High Calcium Ladle Desulfurization Slag

Wei Fan; Jin Zhu Zhang; Wan Zhong Ao; Jun Huang

doi:10.4028/www.scientific.net/AMR.1094.325

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1094Effect of Al2O3 and CaF2 on Melting Temperature of...

Effect of Al₂O₃ and CaF₂ on Melting Temperature of High Calcium Ladle Desulfurization Slag

Abstract:

The external desulphurization of molten iron has become an important step in the production of steel and iron. The melting temperatures of high calcium desulfurization slag, which were taken from Shougang Shuicheng Iron and Steel (Group) Co. Limited, were investigated on basis of the method of hemisphaerium temperature. The contents of CaO, Al₂O₃ and CaF₂ in the slag were adjusted in 47%-53%, 14%-20% and 2%-10% respectively by adding analytical reagent Ca (OH)₂, Al₂O₃and CaF₂ using orthogonal design. The results show that the melting temperature of desulfurization slag decreases obviously with the increase of the content of Al₂O₃ between 14% and 20%, and decreased markedly with the increase of the content of CaF₂ lower than 8%. The impact to the melting temperature of the high calcium slag is as follows: Al₂O₃ > CaF₂> CaO.

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Periodical:

Advanced Materials Research (Volume 1094)

Pages:

325-328

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1094.325

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Online since:

March 2015

Authors:

Wei Fan, Jin Zhu Zhang*, Wan Zhong Ao, Jun Huang

Keywords:

Al₂O₃, CaF₂, CaO, Melting Temperature

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