CaCl_2熔盐电解钛精矿制备TiFe合金

Preparation of TiFe alloy by electro-deoxidization in molten calcium chloride from titanium concentrates

在CaCl2熔盐中,以通Ar气保护条件下经过熔融后再凝固的钛精矿作为阴极,进行电解制备钛铁合金,探讨电解过程中TiFe合金的形成机制。在电解电压为3.1V,电解温度900℃时,研究了电解时间对电解产物的影响。研究结果表明,实验室条件下,可以通过熔盐电解钛精矿的方法制备成分均匀的TiFe合金。钛精矿在电解过程中经历了优先生成Fe,然后逐步形成TiFe的合金化历程,中间产物包括CaTiO3、TiO2、Ti2O3、TiO、Fe、TiFe2,Ti的还原是分多步完成的。

TiFe alloy is prepared by the electrolytic reduction of molten-solidified titanium concentrate in molten CaCl2,which is obtained under argon atmosphere.The formation mechanism of TiFe alloy is discussed.The impact of electrolyte time on product is studied when electrolyte voltage is 3.1 V and electrolyte temperature is 900 ℃.Research results show that TiFe alloy with uniform composition can be obtained by this means.The deoxidize product is iron and TiFe alloy by order.The reduction of Ti is a multi-step process and the intermediate products include CaTiO3,TiO2,Ti2O3,TiO,Fe and TiFe2.