联合法生产海绵钛过程中氧含量的控制研究

分析了联合法生产海绵钛过程中氧杂质的来源,以及造成海绵钛中氧杂质含量高的主要原因。指出降低海绵钛产品中氧含量的关键在于降低精TiCl4中的TiOCl2含量,而采用铝粉除钒工艺可降低精TiCl4中TiOCl2的含量。此外,对粗TiCl4进行密封保护,并采用降温储存的方法(降低TiOCl2在TiCl4中的溶解度),可有效降低精TiCl4中的氧杂质含量,从而生产出氧杂质含量低的高品质海绵钛产品。

Study on the Control of Oxygen in Titanium Sponge Production

In this paper,the sources of the oxygen impurity during sponge titanium production were analyzed,and the reasons for the high oxygen impurity content were discussed.It is found that controling the content of TiOCl2 in TiCl4 is the key to reduce the oxygen content in titanium sponge product and using aluminum to remove vanadium can reduce the content of TiOCl2 in TiCl4.In addition,the crude TiCl4 must be sealed and stored in cool environment （to reduce the solubility of TiOCl2 in TiCl4）.It can reduce the oxygen impurity content of TiCl4 effectively and meet the need to produce high quality titanium sponge.