THE EFFECT OF TEMPERATURE ON THE DEGREE OF PURITY OF INDIUM AT ITS ELECTROREFINING
Keywords:
indium, electrolysis, indium electrorefining, cathodic polarization, purity of indiumAbstract
The object of the study was rough indium produced in Kazakhstan. To optimize the conditions for its electrorefining, the effect of temperature on the electrodeposition of indium on a titanium electrode in chloride electrolytes was studied in this paper.From the calculated values of the activation energy of the studied process, it was established that the electroreduction of indium on titanium occurs in a mixed mode (Ea = 35.7 kJ/mol). The optimum temperature regime of the process 30-40°С was found, which promotes the formation of qualitative cathode sediments and an increase in their purity during electrolysis (99.9992%).
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