Fundamental Studies on Fused Salt Electrolysis Process of Titanium Which Is Electrowon in Molten State.

Two kinds of Fundamental Studies performed in order to establish the fused salt electrolysis process of titanium which is electrowon in molten state by being allowed to dissolve into molten zinc.（1）锌与锌钛合金的气相分离：锌钛系统中有几种物质化合物的种类。如果要用锌-钛合金中的锌分离出干净的钛，那么它是被期望的，因为金属化合物可以在温度低的情况下进行热分解。由于这一原因，锌的蒸汽分离器含有锌-钛合金的7.5%钛合金，通过重量测试了在不同参数大气层中使用0.1兆帕的恒温器进行的各种常数温度。从这个实验中发现了它，因为它被保留，它在温度低于600 ° C的情况下被热分解，而在温度高于620 ° C的情况下被热分解，而在温度高于620 ° C的情况下被热分解成生产金属钛。它也是EV ... More 这表明锌的蒸发率是由气体阶段的质量转移决定的。（2）对Trivalent Titanium的电化学还原过程的澄清：这是一项基本研究，需要设计一个熔融的盐电化学细胞。从（i）含有TiCl_3的BaCl_2-CaCl_2-NaCl填充盐的电压分析， （ii）用镁-锌合金或金属钛减少BaCl_2-CaCl_2-NaCl填充盐的TiCl_3，和（iii）钛-氯潜力图的热参数，发现氯化物中的三重钛离子通过电化学将其电化学上的微分钛离子降低到金属钛，以下建议是，分区应该安排在电子细胞中。进一步的问题是：（i）将TiCl_4转化为熔盐的过程和溶解率;（ii）控制钛的电解沉积率与TiCl_4的溶解率的平衡;（iii）将电解沉积钛转化为钼锌的溶解率;等等。

Two kinds of fundamental studies performed in order to establish the fused salt electrolysis process of titanium which is electrowon in molten state by being alllowed to dissolve into molten zinc. (1) Separation of zinc by vaporization from zinc-titanium alloy:There are several kinds of matallic compounds in the zinc-titanium system. In order to obtain clean titanium by separating zinc from zinc-titanium alloy, it is desired that the metallic compounds can be thermally decomposed at a temperature as low as possible. For this reason the vaporization separatuin bahaviors of zinc from zinc-titanium alloy containing 7.5% titanium by weight were examined at various constant temperatures in an argon atmosphere of 0.1 MPa by using a thermobalance. From this experiment it was found that TiZn_3 remained as it was without being thermally decomposed at temperatures lower than 600゜C, while at temperatures higher than 620゜C it was thermally decomposed to produce metallic titanium. It became also ev … More ident that the vaporization rate of zinc was determined by mass transfer in gas phase. (2) Clarification of electrolytic reduction process of trivalent titanium ions: This is a fundamental study required to design the fused salt electrolysis cell. From (i) voltammetric analysis of BaCl_2-CaCl_2-NaCl fused salt containing TiCl_3, (ii) reduction of TiCl_3 in BaCl_2-CaCl_2-NaCl fused salt by magnesium-zinc alloy or metallic titanium,and (iii) thermodynamic consideration of titanium-chlor potential diagram, it was found that trivalent titanium ion in chloride electrolyte was electrolytically reduced via divalent titanium ion to metallic titanium, This suggests that partitions should be arranged in the electrlysis cell. Further problems are to examine (i) supplying procedure and dissolution rate of TiCl_4 into the fused salt, (ii) factors controlling the balance of dissolution rate of TiCl_4 with electrodeposition rate of titanium, (iii) dissolution rate of electrodeposited titanium into molten zinc, etc. Less