Study on Kinetics of Tellurium Separation by Sodium Hydroxide from Water Leaching Copper-Separated Residue Enhanced with Ultrasonic Wave AITranslate
Abstract AITranslate
Water leaching copper-separated residue is an important intermediate product in the hydrometallurgy process of copper anode slime,which is rich in rare and precious metals such as Te,Au,and Ag,and has high recovery value.The leaching rate of tellurium is low due to its encapsulation phenomenon.With the enhancement of ultrasonic wave,the leaching rate of tellurium reaches 93.15%under the optimal process conditions of the ultrasonic power of 150 W,addition amount of NaClO3 of 1.5 times the mass of the copper-separated residue,liquid-solid ratio of 9 mL/g,NaOH concentration of 1.2 mol/L,reaction temperature of 90℃,and reaction time of 30 min.The kinetics of the leaching process conforms to the Avrami model,and the apparent activation energy is 26.02 kJ/mol.The leaching process is controlled by a mixture of diffusion and interfacial chemical reactions with the kinetic equation of-ln(1-X)=2379.153×e-3.1297/Tt0.63.
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DOI：
Chinese Library Classification Number:TF01[冶金工程—冶金物理化学]
Citation Information:
Water leaching copper-separated residue is an important intermediate product in the hydrometallurgy process of copper anode slime,which is rich in rare and precious metals such as Te,Au,and Ag,and has high recovery value.The leaching rate of tellurium is low due to its encapsulation phenomenon.With the enhancement of ultrasonic wave,the leaching rate of tellurium reaches 93.15%under the optimal process conditions of the ultrasonic power of 150 W,addition amount of NaClO3 of 1.5 times the mass of the copper-separated residue,liquid-solid ratio of 9 mL/g,NaOH concentration of 1.2 mol/L,reaction temperature of 90℃,and reaction time of 30 min.The kinetics of the leaching process conforms to the Avrami model,and the apparent activation energy is 26.02 kJ/mol.The leaching process is controlled by a mixture of diffusion and interfacial chemical reactions with the kinetic equation of-ln(1-X)=2379.153×e-3.1297/Tt0.63.
quote
| GB/T 7714-2015 | [1] ZENG Yan-liang, PENG Shan, LIAO Chun-fa, et al. Study on Kinetics of Tellurium Separation by Sodium Hydroxide from Water Leaching Copper-Separated Residue Enhanced with Ultrasonic Wave[J]. Rare Metals and Cemented Carbides, 2023(3): 30-36. |
| MLA | [1] ZENG Yan-liang, et al., "Study on Kinetics of Tellurium Separation by Sodium Hydroxide from Water Leaching Copper-Separated Residue Enhanced with Ultrasonic Wave." Rare Metals and Cemented Carbides, no. 3, 2023, pp. 30-36. |
| APA | [1] ZENG Yan-liang, PENG Shan, LIAO Chun-fa, & LIU Fu-peng. (2023). Study on Kinetics of Tellurium Separation by Sodium Hydroxide from Water Leaching Copper-Separated Residue Enhanced with Ultrasonic Wave. Rare Metals and Cemented Carbides(3), 30-36. |
| IEEE | [1] ZENG Yan-liang, PENG Shan, LIAO Chun-fa, and LIU Fu-peng, "Study on Kinetics of Tellurium Separation by Sodium Hydroxide from Water Leaching Copper-Separated Residue Enhanced with Ultrasonic Wave," Rare Metals and Cemented Carbides, no. 3, pp. 30-36, 2023. keywords: {ultrasonic wave;tellurium;enhanced leaching;kinetics;copper-separated residue} |