Mechanism of ultrasound enhanced selective oxygen pressure leaching of Ga and Ge from zinc powder replacement residue

Transactions of Nonferrous Metals Society of China 2026 Open access

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Authors: Yuan-xin LIANG, M SUN, Bo-yi LUO, Biao DING, Zhe Shen, Tian-xiang ZHENG, Qi Li, Bang-fei ZHOU, Chun-mei LIU, Cai-gui WU, Wei-li REN, Yun-bo ZHONG
DOI: 10.1016/s1003-6326(25)67009-9
Cited by: 1
References: 60

Abstract

The leaching mechanism of gallium (Ga) and germanium (Ge) from zinc powder replacement residue (ZPRR) was investigated through ultrasonic-assisted sulfuric acid leaching. Characterization via XRD, SEM, XPS, and FT-IR revealed that ultrasonic treatment promotes the dehydration of H 4 SiO 4 colloids, thereby reducing their adsorption capacities for Ga and Ge complexes. Additionally, ultrasound enhances the dissolution of CaS in H 2 SO 4 , increasing H 2 S production, which aids in the reduction of Fe 3+ and mitigates iron precipitate formation. Process parameters including ultrasonic power (0−450 W), temperature (100−120 °C), and leaching time (30−120 min) were systematically optimized, achieving optimal leaching efficiencies of Ga and Ge at 95.7% and 94.5%, respectively.

Fields of Study & Subjects

Metal Extraction and Bioleaching Extraction and Separation Processes Iron and Steelmaking Processes

Publication details

Journal / source
Transactions of Nonferrous Metals Society of China
Publisher
Elsevier BV
Volume
36
Issue
3
Pages
956–973
Publication date
1 March 2026
Language
EN