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含Ｔｉ高炉渣是还原性渣，其中含有约占总Ｔｉ量１／５—１／４低价Ｔｉ（Ｔｉ~２＋，Ｔｉ~３＋），而钙钛矿主要由Ｔｉ~４＋形成，因此可通过渣氧化使低价Ｔｉ氧化为高价Ｔｉ，以提高钙钛矿结晶量．实验结果表明，在空气中于１０００℃保温约３０ｍｉｎ，渣中的低价Ｔｉ几乎变为高价Ｔｉ．以０．５℃／ｍｉｎ从１４７０ ℃降至１２００℃，而后自然冷却到室温时，约有８５％ ＴｉＯ_２分布于钙钛矿中．由于渣中氧位的提高，熔渣中能使粘度降低的ＦｅＯ转变为Ｆｅ_２Ｏ_３，这使渣的粘度提高，不利于钙钛矿晶粒长大．另外，氧化使渣中高熔点ＴｉＣ和ＴｉＮ固体颗粒减少或消失而导致钙钛矿晶体异质形核数目减少，从而降低了钙钛矿析出温度。
The Ti-bearing blast furnace slag is a reducible slag, which contains Ti (Ti ~ 2 +, Ti ~ 3 +) at a low level of 1 / 5-1 / 4 of the total Ti content, while the perovskite is mainly formed by Ti ~ 4 + Slag oxidation causes the oxidation of low-valent Ti to high-value Ti to increase the amount of perovskite crystals. The experimental results show that in the air at 1000 ℃ for about 30min, the slag in the low-cost Ti almost become high-priced Ti. At 0.5 ° C / min from 1470 ° C to 1200 ° C, and then naturally cooled to room temperature, about 85% TiO_2 is distributed in the perovskite. Due to the increase of the oxygen level in the slag, the FeO in the slag can reduce the viscosity to Fe2O3, which increases the viscosity of the slag and is not conducive to the growth of perovskite grains. In addition, oxidation reduces or disappears the high-melting TiC and TiN solid particles in the slag, resulting in a decrease in the number of heterogeneous nuclei in the perovskite crystal, thereby reducing the precipitation temperature of the perovskite.