Effect of SnO2 on the structure and chemical durability of the glass prepared by red mud

The glass samples were prepared by the traditional melting method with red mud as the main raw material. The effect of SnO 2 content on the structure, crystallization behavior and corrosion resistance of the glass was studied by FTIR, XRD , and SEM. The results showed that the incorporation of SnO 2 increased the crystallization tendency of the glass. With the content of SnO 2 up to 1.96 wt%, some crystals precipitated in the glass. FTIR spectroscopy indicated that the vibration of the [SiO 4 ] group first shifted to the low wave number as the SnO 2 content increased to 0.99 wt%, and then moved to the high wave number with the SnO 2 content further increasing. With the SnO 2 content increasing, the alkali resistance of the glass was increased. When the content of SnO 2 was 1.48 wt% and 1.96 wt%, the mass loss of the glass in alkaline solution was 1.12% and 1.04% respectively. The water resistance of the glass was first reduced, then gradually increased after the SnO 2 content exceeded 0.99 wt%.