Next Article in Journal
Isolation of Allosteric Tryptase Inhibitor from Methanol Extract of Rhubarb and Enhancement of Its Tryptase Inhibitory Activity by Compounds That Were Screened by In Silico Screening
Next Article in Special Issue
Challenges and Opportunities in Hydrometallurgical Recovery of Germanium from Coal By-Products
Previous Article in Journal
Integrating Surface Plasmon Resonance and Docking Analysis for Mechanistic Insights of Tryptase Inhibitors
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Molecules
Volume 30
Issue 6
10.3390/molecules30061339
molecules-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching

by
Zhiqiang Qiao
1,
Yunquan Yang
1,*,
Tian Zhang
1 and
Weishun Chen
2
1
School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
2
School of Chemical Engineering, Zhaoqing Technician Institute, Zhaoqing 526040, China
*
Author to whom correspondence should be addressed.
Molecules 2025, 30(6), 1339; https://doi.org/10.3390/molecules30061339
Submission received: 18 February 2025 / Revised: 13 March 2025 / Accepted: 14 March 2025 / Published: 17 March 2025
(This article belongs to the Special Issue Advances in the Recycling of Industrial Waste: Critical Minerals in the Clean Energy Transition)
Browse Figures
Versions Notes

Abstract

In this work, by using the sintering filtrated dust (SFD) from ferrous metallurgy as a raw material, the process of separating and recovering trace silver, including the steps of complexation leaching by Na2S2O3-CuCl, purification by hydrogen peroxide, and precipitation transformation, was researched and developed. The process is characterized by a high leaching selectivity and a high recovery. The recommended conditions for leaching trace silver from SFD were as follows: a leaching time of 120 min, a leaching temperature of 60 °C, a solid–liquid ratio of 6 L/kg, a Na2S2O3 concentration of 45 g/L, and a CuCl dosage of 5.0 g/L. Through a two-step hydrogen peroxide process, removal of the impurity ions Cu and Pb and high-efficiency recovery of trace silver were realized. The purity of the silver sulfide product obtained from the recovery was 97.0%, and the total silver recovery was 80.1%. In addition, the reaction mechanism of the recovery process was investigated in this work, and effective removal of impurity ions was realized by regulating the reaction time.
Keywords: sintering filtrated dust; Na2S2O3-CuCl system; leaching; silver recovery; hydrogen peroxide purification mechanism sintering filtrated dust; Na2S2O3-CuCl system; leaching; silver recovery; hydrogen peroxide purification mechanism

Share and Cite

MDPI and ACS Style

Qiao, Z.; Yang, Y.; Zhang, T.; Chen, W. Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching. Molecules 2025, 30, 1339. https://doi.org/10.3390/molecules30061339

AMA Style

Qiao Z, Yang Y, Zhang T, Chen W. Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching. Molecules. 2025; 30(6):1339. https://doi.org/10.3390/molecules30061339

Chicago/Turabian Style

Qiao, Zhiqiang, Yunquan Yang, Tian Zhang, and Weishun Chen. 2025. "Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching" Molecules 30, no. 6: 1339. https://doi.org/10.3390/molecules30061339

APA Style

Qiao, Z., Yang, Y., Zhang, T., & Chen, W. (2025). Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching. Molecules, 30(6), 1339. https://doi.org/10.3390/molecules30061339

Article Metrics

Back to TopTop