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用交流阻抗方法测量了含Ti高炉渣及CaO—SiO2-Al2O3-MgO五元合成渣在1653-1733K温度范围内的电导率,检测到了熔渣冷却过程Ca-Ti矿相(CaTiO3)的初晶温度是1693K.由于渣中CaTiO3的析出,渣的碱度减小,并导致两性氧化物Al2O3和TiO2呈碱性并发生离解:TiO2=Ti(4+)2O(2-),Al2O3=2Al(3+)3O(2-).通过电导率的测量确定了该离解反应达到平衡的时间.并计算出Al2O3和TiO2离解反应的速率常数之和及CaTiO3生成反应的速率常数在1703-1733K温度范围内将电导率数据按Arrhenius形式进行了回归.
The electrical conductivity of Ti-bearing blast furnace slag and CaO-SiO2-Al2O3-MgO ternary synthesized slag at 1653-1733K was measured by AC impedance method. The primary crystal of CaTiO3 phase The temperature is 1693K. Due to the precipitation of CaTiO3 in the slag, the alkalinity of the slag decreases and the amphoteric oxide Al2O3 and TiO2 are alkaline and dissociate: TiO2 = Ti (4+) 2O (2 -), Al2O3 = 2Al (3+) 3O -). The measurement of conductivity determines the time it takes for the dissociation reaction to reach equilibrium. The rate constants of dissociation reaction between Al2O3 and TiO2 and the rate constant of CaTiO3 formation reaction were calculated. The conductivity data were regressed as Arrhenius form in the temperature range of 1703-1733K.