Rocess Study of Tellurium Extraction After Platinum-palladium Replacement
In this study,sodium sulphite(Na2SO3)was used as the reducing agent to investigate process of reducing tellurium(Te)in the liguid after platinum-palladium replacement.In order to reduce the Te content in the liquid and improve the leaching effect of Te in the liquid after plutinum-palladium replacement,the Na2SO3 mass concentration,reaction temperature,Na2SO3 addition time,reaction acidity,and addition time of platinum-palladium replacement were stuided.The results showed that the mass concentration of Na2SO3 was 100 g/L,Na2SO3 was added for 60 min,the reaction temperature was60～70℃,and the reaction acidity was60 g/L and 70 min in the reaction system.After the process optimization,the tellurium content of the posterior solution decreased by 45.2%,and the Te leaching rate could reach the highest rate of 95.43%.
sodium sulfitereaction aciditytellurium content in tellurium solutiontellurium leaching ratereducing conditions
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