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为促进高钛高炉渣中钙钛矿相选择性析出，满足选矿分离的要求，分别在恒温和连续冷却过程中研究了钙钛矿相的析出行为。实验结果表明，钙钛矿相析出的适宜温度区间为１４００～１３００℃，熔渣在此温度范围内缓慢冷却（冷却速度０．５℃／ｍｉｎ），可有效促进钙钛矿相析出并使其枝晶产生粗化，结晶量达２４．８９％，晶粒度达４８．２７μｍ。此外，通过钙钛矿晶体形貌的变化，探讨了枝晶粗化机理，认为晶体产生缩颈重熔促进了枝晶粗化。
In order to promote selective precipitation of perovskite phase in high-titanium blast furnace slag and meet the requirements of beneficiation and separation, the precipitation behavior of perovskite phase was investigated during constant temperature and continuous cooling respectively. The experimental results show that the suitable temperature range for precipitation of perovskite phase is 1400 ~ 1300 ℃, and the slag is slowly cooled in this temperature range (cooling rate 0.5 ℃ / min), which can effectively promote the precipitation of perovskite phase and make it Dendrite produce coarse, the amount of crystallization of 24.89%, the grain size of 48.27μm. In addition, through the change of the crystal morphology of perovskite, the mechanism of dendrite coarsening is discussed. It is believed that the necking and remelting of crystals promote dendrite coarsening.