Fundamental Study on a new titanium production process utilizing titanium sub-chlorides

本研究探索了一种新的、连续的钛生产工艺，即熔融的MgCl2-TiCl2混合盐用镁通过重复的方法还原得到钛。重复的方法是重复下面的氯化步骤(A)和还原步骤(B)，从而在同一反应器中依次增加钛的产生量：Ti(S)(在MgCl2(L)中)+TiCl4(G)=TiCl2-MgCl2(A)TiCl2-MgCl2(L)+Mg(L)=Ti(S)+MgCl2(L)(B)1。本研究的主要目的是发现：(1)钛和TiCl4在熔融的氯化镁中的反应性；(2)在混合盐中生成的TiCl2和TiCl3；(3)推断出钛从氯化镁中分离出来；(4)钛的产物形态和纯度。实验观察如下：(1)找到了使重复路线成功的合适的实验条件，使反应中没有未反应的TiCl4；(2)氯化后的Ar鼓泡减少了TiCl3的生成，使TiCl3与混合盐中的钛发生反应；(3)钛产品的形貌表明，它们是粉状的，烧结体为100~200μm，柱状物为100μm。钛的纯度约为85.6%

In this investigation, new, continuous titanium production route has been research, whereby the titanium has been obtained by reacting molten MgCl2-TiCl2 mixed salt reduction by Mg via repetition method. The repetition method is to repeat the following chlorination step (a) and the reduction step (b), in turn, thus increasing Ti product quantity in a same reactor :Ti(s)(in MgCl_2(l)) +TiCl_4 (g) = TiCl_2-MgCl_2 (a)TiCl_2-MgCl_2(l)+Mg(l)= Ti(s) + MgCl_2(l) (b)1. Thus, main purpose of this investigation is to find the followings :(1) reactivity of Ti and TiCl4 in molten MgCl2(2) TiCl2 and TiCl3 formation in the mixed salt(3) Ti separation from MgCl2 after the deduction(4) Ti product morphology and purity2. The experimental observation are as follows :(1) appropriate experimental conditions making this repetition route successful has been sought whereby no un-reacted TiCl4 is observed in reaction (a)(2)TiCl3 formation was minimized by Ar bubbling after the chlorination whereby reduction of TiCl3 takes place by reaction with Ti in the mixed salt(3) Ti product morphology shows that they are powdery, of 100〜200μm sintered grain, and granular, of 100μm columnar. Ti purity was around 85.6 %