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15186

Recovery of Zinc from Zinc Dross Using Pyrometallurgical and Electrochemical Methods

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Electrochemistry

Abstract

Recovery of zinc from its dross was investigated using electrochemical and pyrometallurgical methods. Almost 100% pure zinc was obtained using these methods. A small bench scale system for the investigating the recovery of zinc using pyrometallurgical methods was developed. The system based on the evaporation of zinc (in the dross) at 1050oC and condensing zinc vapors into pure zinc in a separate crucible. Almost pure Zn (99.95%) is obtained using this method. Recovery of zinc was also performed using electrowinning from acidified zinc sulfate bath and electrorefining of zinc dross anodes in alkaline ammonia bath. In either method different parameters including current density and deposition time were addressed. Zinc powder of almost 100% purity was obtained.

DOI

10.21608/ejchem.2018.2782.1225

Keywords

Zinc dross, hot dip galvanizing, electrorefining, electrowinning, pyrometallurical techniques

Authors

First Name

Ibrahim

Last Name

Ghayad

MiddleName

Mohamed

Affiliation

Corrosion Control & Surface Protection Lab., Metals Technology Dept., Central Metallurgical Research and Development Institute

Email

ighayad@yahoo.com

City

Cairo

Orcid

-

First Name

Aida L.

Last Name

El-Ansary

MiddleName

-

Affiliation

Dept. of chemistry, Faculty of Science, Cairo University

Email

aidansary1@yahoo.com

City

-

Orcid

-

First Name

Zeinab

Last Name

Abdel Aziz

MiddleName

A.

Affiliation

CMRDI

Email

forzeinab@yahoo.com

City

-

Orcid

-

First Name

Amany A.

Last Name

El-Akshr

MiddleName

-

Affiliation

Higher Institute of Engineering at 15th May City, Egypt

Email

amany.chem@yahoo.com

City

Cairo

Orcid

-

Volume

62

Article Issue

2

Related Issue

4746

Issue Date

2019-02-01

Receive Date

2018-02-01

Publish Date

2019-02-01

Page Start

373

Page End

384

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_15186.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=15186

Order

15

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

Recovery of Zinc from Zinc Dross Using Pyrometallurgical and Electrochemical Methods

Details

Type

Article

Created At

22 Jan 2023