Abstract
There was investigated kinetic of processes on graphite anode in oxidative melt on the base of eutectic CsCl–KCl–NaCl with additives TeO2 and NaF at temperature 600 °C. There were researched relationships between limiting current of ions tellurium’s overcharge and limiting current of discharge of oxygen-containing ions and content of TeO2 and NaF. Excess of these currents leads to chlorine evolution in oxychloride melts and freons in oxychloride-fluoride melts. There was offered mechanism of TeO2 dissolution in chloride and chloride-fluoride melts with generation and subsequent dissociation of tellurium oxychloride with forming of O2–, TeCl6 2–, and [TeO2Cl]–. Its availability in electrolyte was confirmed by method of infrared spectroscopy, and explains high rate of discharge of oxygenated ions at the anode.
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Schedule a callMore From: Izvestiya Vuzov. Tsvetnaya Metallurgiya (Proceedings of Higher Schools. Nonferrous Metallurgy)
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