| Firstly, the domestic and foreign development of Direct Electrodeoxidation was introduced briefly, especially applied in preparing Ti from TiO2.Zr has been used in extensive fields because of its good properties, such as high melting point, corrosion-resistant, small thermal neutron adsorption and outstanding mechanical performance, thus praised as "one of the most future material in the 21st century". But the existing production processes are complex, expensive, energy intensive and probably polluting. Therefore, it is highly desirable to devise a simple, low-cost and environmentally sound process in order to the meet increasing demands for Zr and its alloys.Secondly, based on the theory of Direct Electrodeoxidation, the process was used to reduce solid ZrO2 to Zr. Several main factors were investigated in order to explore the best synthesis condition. The results indicated that the best condition was followed: CaCl2: NaCl system(7:3), <45μm ZrO2 granularity,16MPa pressure, 3.12mm thickness, 1000℃sintering temperature, 800℃electrolysis temperature and about 12h electrolysis time. Besides, the product gas indicated that there was Cl2 in the initial stage but O2,CO and CO2 were still mainly gases in the whole electrolysis process.Thirdly, direct electrodeoxidation of ZrO2-Ni2O3 to ZrNi alloy was studied preliminarily under the given condition. The experimental results showed that ZrNi alloy could account for about 78% in the product, even 94.5% by analyzing micro-section elements.This process is simple, convenient, cheap, friendly to environment.
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