A laboratory-scale investigation of alkaline zinc electrowinning

S. Gürmen; M. Emre

doi:10.1016/S0892-6875(03)00081-5

A laboratory-scale investigation of alkaline zinc electrowinning

S. Gürmen^*, M. Emre

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

The possibility of utilizing alkaline electrolysis technique in zinc electrowinning has been investigated. Effects of electrolysis conditions on the morphology of deposited zinc were also studied. The composition of the electrolyte was selected to be in accordance with the industrial practice, 25 g/1 Zn²⁺ and 240 g/1 NaOH. The investigated parameters were current density (500, 1000, 1500 A/m²) and electrolyte temperature (35, 50, 65 °C). Considerably high current efficiencies (97-99%) were obtained with energy consumptions of 2.46-2.7 kWh/kg Zn as compared to 3.25-3.4 kWh/kg Zn of industrial electrowinning, which resulted in 20% energy savings. Zinc deposits obtained were in spongy and powdery form.

Original language	English
Pages (from-to)	559-562
Number of pages	4
Journal	Minerals Engineering
Volume	16
Issue number	6
DOIs	https://doi.org/10.1016/S0892-6875(03)00081-5
Publication status	Published - Jun 2003

Keywords

Electrowinning
Extractive metallurgy
Non-ferrous metallic ores
Reduction

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S0892-6875(03)00081-5

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abstract = "The possibility of utilizing alkaline electrolysis technique in zinc electrowinning has been investigated. Effects of electrolysis conditions on the morphology of deposited zinc were also studied. The composition of the electrolyte was selected to be in accordance with the industrial practice, 25 g/1 Zn2+ and 240 g/1 NaOH. The investigated parameters were current density (500, 1000, 1500 A/m2) and electrolyte temperature (35, 50, 65 °C). Considerably high current efficiencies (97-99%) were obtained with energy consumptions of 2.46-2.7 kWh/kg Zn as compared to 3.25-3.4 kWh/kg Zn of industrial electrowinning, which resulted in 20% energy savings. Zinc deposits obtained were in spongy and powdery form.",

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T1 - A laboratory-scale investigation of alkaline zinc electrowinning

AU - Gürmen, S.

AU - Emre, M.

PY - 2003/6

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N2 - The possibility of utilizing alkaline electrolysis technique in zinc electrowinning has been investigated. Effects of electrolysis conditions on the morphology of deposited zinc were also studied. The composition of the electrolyte was selected to be in accordance with the industrial practice, 25 g/1 Zn2+ and 240 g/1 NaOH. The investigated parameters were current density (500, 1000, 1500 A/m2) and electrolyte temperature (35, 50, 65 °C). Considerably high current efficiencies (97-99%) were obtained with energy consumptions of 2.46-2.7 kWh/kg Zn as compared to 3.25-3.4 kWh/kg Zn of industrial electrowinning, which resulted in 20% energy savings. Zinc deposits obtained were in spongy and powdery form.

AB - The possibility of utilizing alkaline electrolysis technique in zinc electrowinning has been investigated. Effects of electrolysis conditions on the morphology of deposited zinc were also studied. The composition of the electrolyte was selected to be in accordance with the industrial practice, 25 g/1 Zn2+ and 240 g/1 NaOH. The investigated parameters were current density (500, 1000, 1500 A/m2) and electrolyte temperature (35, 50, 65 °C). Considerably high current efficiencies (97-99%) were obtained with energy consumptions of 2.46-2.7 kWh/kg Zn as compared to 3.25-3.4 kWh/kg Zn of industrial electrowinning, which resulted in 20% energy savings. Zinc deposits obtained were in spongy and powdery form.

KW - Electrowinning

KW - Extractive metallurgy

KW - Non-ferrous metallic ores

KW - Reduction

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DO - 10.1016/S0892-6875(03)00081-5

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SP - 559

EP - 562

JO - Minerals Engineering

JF - Minerals Engineering

IS - 6

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A laboratory-scale investigation of alkaline zinc electrowinning

Abstract

Keywords

UN SDGs

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