Preparation of Non-Fluorine Glass Ceramics from Modified Molten Blast Furnace Slag

Wen Tao Zhang; Feng He; Jun Lin Xie; Yun Lan Li; Xiao Qing Liu; De Fang; Hu Yang

doi:10.4028/www.scientific.net/MSF.944.1111

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HomeMaterials Science ForumMaterials Science Forum Vol. 944Preparation of Non-Fluorine Glass Ceramics from...

Preparation of Non-Fluorine Glass Ceramics from Modified Molten Blast Furnace Slag

Abstract:

Non-fluorine glass ceramics were successfully prepared from modified molten blast furnace (BF) slag. Quartz sand and Al₂O₃ were added as modification material. Fe₂O₃, TiO₂, and ZrO₂ were added as nucleation agents. The thermal properties of the modified BF slag and the structure of glass ceramics were investigated by differential scanning calorimetry (DSC), scanning electron microscope (SEM) and X-ray diffraction analysis (XRD). The results indicated that the crystallization temperature (T_p) decreased with increasing BF slag, and the glass stability index ΔT initially decreased and then increased. As BF slag increased, the growth of akermanite in glass ceramics was enhanced, while the formation of diopside was not notably effected. The micro-hardness of glass ceramics reached 1082 Hv and the flexural strength was 70 MPa when the BF slag was 74 wt. %.

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Materials Science Forum (Volume 944)

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1111-1116

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https://doi.org/10.4028/www.scientific.net/MSF.944.1111

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Online since:

January 2019

Authors:

Wen Tao Zhang, Feng He*, Jun Lin Xie, Yun Lan Li, Xiao Qing Liu, De Fang, Hu Yang

Keywords:

Glass Ceramics, Molten Blast Furnace Slag, Non-Fluorine

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