The Occurrence of Special Components in Blast Furnace Slag of Baotou Iron and Steel Company

Abstract:

The mineral composition of the solidified blast furnace slag and the occurrence of special components CaF2, K2O, Na2O, RexOy and ThO2 were researched by optical microscope analysis, X-ray diffraction analysis and scanning electron microscopy and energy spectrum analysis. The results showed that the major minerals in solidified furnace slag are akermanite and gehlenite; the special component CaF2 is not hosted in the cuspidine (3CaO•2SiO2•CaF2), but in the magnesium and aluminum silicate mineral; the special components K2O，Na2O is hosted in akermanite, magnesium and aluminum silicate mineral and perovskite; the element thorium cannot form an independent mineral, but coexist with the rare earth element Ce in the perovskite. The results will lay a foundation for further study on the influence of these special components on the crystallization behavior of glass-ceramics.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.117
• Online since: November 2012
• Authors: Guo Ping Luo, Yan Ban, Yi Ci Wang, Wen Wu Yu, Qi Jiang
• Keywords: Blast Furnace Slag (BFS), F Occurrence, K Occurrence, Na Occurrence, Special Components, Th Occurrence

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