A. A. Ivshina, I. B. Polovov, A. V. Abramov, A. V. Chukin, D. A. Danilov, D. G. Lisienko, O. V. Denisova, O. I. Rebrin, A. V. Panfilov, A. V. Korobkov, K. V. Skiba
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引用次数: 0
Abstract—The magnesiothermic reduction of zirconium from its tetrachloride is a promising method for producing a nuclear-purity zirconium sponge. High-purity zirconium tetrachloride can be produced by extractive rectification. This method of zirconium and hafnium separation is based on the difference in the vapor pressures of zirconium and hafnium chlorides over a molten mixture of aluminum and potassium chlorides that is used as a liquid salt extractant. The separation of zirconium and hafnium tetrachlorides is carried out at controlled pressure in direct contact with a low-melting solvent, which is represented by a chloroaluminate melt. One of the main criteria for the suitability of molten potassium and aluminum chlorides for the separation of zirconium and hafnium is the molar ratio AlCl3/KCl. A technique for determining the chemical and phase compositions of frozen chloroaluminate melts, including zirconium tetrachloride containing salts, is developed in this work using the results obtained with a set of modern methods and specific approaches.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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