62.
The effect of Li
2O on the crystallization properties of CaO-Al
2O
3-SiO
2-Li
2O-Ce
2O
3 slags was investigated. With increasing the Li
2O content, LiAlO
2 and CaCeAlO
4 were the main crystalline phases. LiAlO
2 formed for the charge compensating of Li
+ ions to [AlO
45?]-tetrahedrons, and CaCeAlO
4 formed as a result of the charge balance of Ce
3+ ions, Ca
2+ ions, and [AlO
69?]-octahedrons. Increasing the content of Li
2O to 10%, the crystallization temperature was the highest, and the incubation time was the shortest. The crystallization ability was strong due to the three factors of strengthening the interaction between ions and ion groups, decreasing the polymerization degree, and increasing the melting temperature. Further increasing the content of Li
2O, the crystallization performance was obviously suppressed, because the melting temperature and the force between the cations and the anion groups decreased.
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