Phase Composition Analysis of Recycled MgO-C Ladle Lining Materials

Jian Zhang; Jing Long Bu; Li Ren Wang; Rong Lin Wang

doi:10.4028/www.scientific.net/AMR.750-752.2236

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 750-752Phase Composition Analysis of Recycled MgO-C Ladle...

Phase Composition Analysis of Recycled MgO-C Ladle Lining Materials

Abstract:

With the iron and steel metallurgy, cement, ceramic and other industries making a rapid development, the refractory consumption in our country is quite large. So how to recycle the used refractory materials effectively is more and more important. In this experiment, the phase composition of ladle lining bricks at slag line, rampart and bottom were researched systematically, to determine the phase composition change between the unused and recycled materials. It turned out that the low melting point minerals CaMgSiO₄ and Ca₃Mg (SiO₄)₂ formed due to the reaction between MgO and the impurity compositions like SiO₂ and CaO from the melted slag and liquid steel. On the one hand, the formation of these low melting point minerals was one of the main reason for the damage of the recycled MgO-C ladle lining bricks. On the other hand, the alkaline magnesium carbon bricks had purification effect for the liquid steel as a result of the content reduction of SiO₂ and CaO.

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Periodical:

Advanced Materials Research (Volumes 750-752)

Pages:

2236-2239

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.750-752.2236

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Online since:

August 2013

Authors:

Jian Zhang, Jing Long Bu, Li Ren Wang, Rong Lin Wang

Keywords:

Phase Composition, Recycled Ladle Lining Bricks, X-Ray Diffraction (XRD)

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