金属钛制备方法的新进展

New development of technologies for producing titanium metal

简要分析了金属钛的生产方法 ,指出 :由于传统的Kroll法生产成本高 ,限制了钛的应用 ,只有开发新的、连续化的生产工艺 ,才能从根本上达到降低生产成本的目的。系统地总结了目前国内外正在开发或改进的钛生产工艺 ,其中包括二氧化钛的直接电化学还原法、钙热还原法、ITP法、导电体介入反应法、熔盐电解法以及金属氢化物还原法 ,指出了二氧化钛的直接电化学还原法是一种低能耗、无污染的绿色生产新工艺 ,最有希望取代传统的Kroll法。

The use of titanium is restricted because of its high processing cost. The conventional process for producing titanium metal was analyzed briefly. It indicates that only exploring new continuous process could significantly decrease the produce cost of titanium. The researching and developing of new technologies are introduced, including direct electrochemical reduction of TiO_2, calciothermic reaction, ITP process, electronically mediated reaction, molten salt electrolytic process and metal-hydride reduction. It points that direct electrochemical reduction of TiO_2 is a new green process with low energy consumption and non-pollution, and can replace the conventional Kroll process.