Abstract In this paper, CaO granules were prepared, using the slaked lime as the raw material as well as ZrO2, TiO2, and V2O5 as additives, respectively. The influence of different additives on the sintering properties, microstructure and hydration resistance of CaO granules was investigated. The results indicated that the introduction of additives could obviously promote the densification and the hydration resistance of the specimens. Especially, the sintering mechanisms of the specimens with different additives were studied. For the specimens with ZrO2 and TiO2 as additives, the in-situ formed CaZrO3 and Ca3Ti2O7 between grain boundaries promoted the densification to enhance the properties of the granules. However, the adding of V2O5 generated a coating on the surfaces of CaO granules which contributed to the best hydration resistance.

中文翻译：

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基于 CaO-TiO2、CaO-ZrO2 和 CaO-V2O5 体系的 CaO 颗粒抗水化性能的改进

摘要 本文以熟石灰为原料，分别添加ZrO2、TiO2和V2O5为添加剂，制备了CaO颗粒。研究了不同添加剂对CaO颗粒烧结性能、微观结构和抗水化性能的影响。结果表明，添加剂的引入对试样的致密化和抗水化性能有明显的促进作用。特别是研究了不同添加剂试样的烧结机理。对于以 ZrO2 和 TiO2 为添加剂的试样，晶界之间原位形成的 CaZrO3 和 Ca3Ti2O7 促进了致密化，从而提高了颗粒的性能。然而，V2O5 的加入在 CaO 颗粒表面产生了一层涂层，这有助于最好的耐水化性。