低价钛氯化物复合电解质的制备与应用

Preparation and application of low valent titanium chloride composite electrolyte

以四氯化钛和海绵钛为原料,采用歧化反应法制备了低价钛氯化物复合电解质。研究了四氯化钛的滴加速度、反应温度、保温时间对低价钛离子复合电解质制备的影响,获得了优化的制备工艺。在优化的工艺条件下得到了钛离子浓度为11.25%的复合电解质。以制备的低价钛氯化物复合电解质和海绵钛为原料,经过熔盐电解精炼制备出枝晶状金属钛,主要研究了钛离子浓度对电解精炼钛产品形貌和氧含量的影响,获得了最佳钛离子浓度值为5%,在该条件下得到了氧含量为5.8×10^-7的电解精炼钛产品。采用枝晶状金属钛为原料,经过电子束熔炼制备出金属钛锭,采用GDMS对金属钛锭进行分析并与现行标准进行比较,结果表明,制备的金属钛锭纯度达到5N金属钛的标准要求。

Low valent titanium chloride composite electrolyte was prepared by disproportionation reaction using titanium tetrachloride and titanium sponge as raw materials.The effects of titanium tetrachloride dropping speed,reaction temperature and holding time on the preparation of low valent titanium ions composite electrolyte were studied.The optimized preparation process was obtained.Under the optimized process conditions,the composite electrolyte with titanium ion concentration of 11.25%was obtained.Dendritic titanium metal was obtained by molten salt electrorefining using low valence titanium chloride composite electrolyte and titanium sponge.The effect of titanium ion concentration on the morphology and oxygen content of purified titanium products was studied.The optimal concentration of titanium ion was 5%.Under this condition,the product with oxygen content of 5.8×10^-7 was obtained.The results show that the purity of the prepared titanium ingot after electron beam melting using dendritic titanium metal can meet the requirements of 5 Ntitanium standard.