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采用计算机控制的热重量分析系统研究了碱金属氯化物对预氧化钛铁矿碳热还原反应的 协同催化作用．还原反应在非等温条件下进行，试验温度从５０℃线性上升到１０００℃．试验结果表明， 所有碱金属氯化物添加剂均能加速碳热还原反应．在添加量相同的条件下，二元碱金属氯化物的协 同催化比三元和四元协同催化的效果好，其中ＬｉＣｌ和ＣｓＣｌ的协同催化效应最显著．Ｘ－射线衍射结 果表明，碳热还原的主要反应为Ｆｅ２ＴｉＯ５＋ＴｉＯ２＋Ｃ＝２Ｆ２ＴｉＯ３＋ＣＯ↑．
A computer-controlled thermogravimetric analysis system was used to study the synergistic catalysis of alkali metal chloride on the carbothermal reduction of pre-oxidized ilmenite. The reduction reaction was carried out under non-isothermal conditions, with the test temperature rising linearly from 50 ° C to 1000 ° C. The experimental results show that all alkali metal chloride additives can accelerate the carbothermal reduction reaction. The synergistic catalysis of binary alkali metal chlorides was better than that of ternary and quaternary synergistic catalysis under the same adding amount, and the synergistic catalysis effect of LiCl and CsCl was the most significant. X-ray diffraction results show that the main reaction of carbothermal reduction Fe2TiO5 + TiO2 + C = 2F2TiO3 + CO ↑.