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

70 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

Funding

This work has been supported by the Istanbul Technical University Research Fund with the Project Number 2037.

Funders
Istanbul Teknik Üniversitesi

UN SDGs

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

SDG 7 Affordable and Clean Energy
SDG 9 Industry, Innovation, and Infrastructure

Keywords

Electrowinning
Extractive metallurgy
Non-ferrous metallic ores
Reduction

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10.1016/S0892-6875(03)00081-5

Cite this

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title = "A laboratory-scale investigation of alkaline zinc electrowinning",

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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author = "S. G{\"u}rmen and M. Emre",

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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

UR - https://www.scopus.com/pages/publications/18844478441

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

M3 - Article

AN - SCOPUS:18844478441

SN - 0892-6875

VL - 16

SP - 559

EP - 562

JO - Minerals Engineering

JF - Minerals Engineering

IS - 6

ER -

A laboratory-scale investigation of alkaline zinc electrowinning

Abstract

Funding

UN SDGs

Keywords

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