钛精矿熔盐电解动力学研究  

Kinetics of Titanium Concentrates Electrolysis Process in Molten Salt

作　　者：施瑞盟[1] 白晨光[2] 吕学伟[2] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]重庆大学,重庆400044

出　　处：《稀有金属材料与工程》2016年第4期907-912,共6页Rare Metal Materials and Engineering

基　　金：国家重点基础研究发展计划(2007CB613801)

摘　　要：目前利用熔盐电解的方法直接使用Ti O2等氧化物原料来生产金属钛或者钛合金,是国内外对钛及其合金生产的重要研究方向,然而关于熔盐电解动力学的研究相对较少。本实验对传统的未反应核模型进行改进,研究了不同反应温度下钛精矿熔盐电解的动力学过程,发现钛精矿熔盐电解过程的还原速率,受到氧离子在产物层中的扩散速率控制,电解反应中的内扩散为整个电解还原过程的限制性环节。提高反应温度,增加孔隙率有利于内扩散过程。Now the fused salt electrolysis method is used to produce titanium and titanium alloys with titanium-bearing material as starting materials and it has become an important research direction. But less research has been done on the kinetics of the fused salt electrolysis process. In the present paper, electrolysis kinetics at different temperatures was studied using an improved model. Results show that internal diffusion is considered as the restrictive link of electrolysis process of ilmenite concentrate in molten salt. High reaction temperature and big porosity of cathode can improve the internal diffusion speed; however, at the same time, side reaction will increase, which affects the electrolysis speed.

关 键 词：未反应核模型 熔盐电解 动力学 钛合金 

分 类 号：TF823[冶金工程—有色金属冶金]