Dissolution kinetics of zinc and indium from high iron-bearing zinc calcine in sulfuric acid solution

Zheng Fu; Wencheng Gao; Jiankang Wen

doi:10.1117/12.3032227

19 June 2024 Dissolution kinetics of zinc and indium from high iron-bearing zinc calcine in sulfuric acid solution

Zheng Fu, Wencheng Gao, Jiankang Wen

Proceedings Volume 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) ; 131720J (2024) https://doi.org/10.1117/12.3032227
Event: 9th International Symposium on Energy Science and Chemical Engineering, 2024, Nanjing, China

Abstract

A sulfuric acid-based process was proposed for the extraction of zinc and indium from a sample of high iron-bearing zinc calcine. The influence of initial concentration of acid solution, reaction time, liquid-to-solid ratio, and leaching temperature on the extents of Zn, In and Fe were comprehensively investigated. The preferred experimental conditions were the initial concentration of acid solution 180 g·L^-1, a reaction time 1 h, a leaching temperature 80℃, and a liquid-to-solid ratio (L/S) 5:1, in which the highest leaching extents of Zn, In and Fe were up to 82.92%, 25.64%, and 9.75%, respectively. Finally, the dissolution kinetics of zinc and indium from zinc calcine were investigated in detail resulting in obtaining apparent activation energies for their respective leaching process as 20.12 kJ·mol^-1 for zinc and 7.85 kJ·mol^-1 for indium, and the semi-empirical kinetic equations of zinc and indium were also established.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zheng Fu, Wencheng Gao, and Jiankang Wen "Dissolution kinetics of zinc and indium from high iron-bearing zinc calcine in sulfuric acid solution", Proc. SPIE 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) , 131720J (19 June 2024); https://doi.org/10.1117/12.3032227

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