Mechanism of Leaching Zinc from Low-Grade Zinc Oxide by Ultrasonic Enhancement DOI
Yun Dang,

Guo Lin,

Zhifei Yang

et al.

Published: Jan. 1, 2024

Language: Английский

Selective extraction of Zn from spent batteries using alkaline leaching solutions based on glycine as complexing agent DOI Creative Commons
S.P. Barragán-Mantilla, Patricia Almendros, Gabriel Gascó

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132104 - 132104

Published: Feb. 1, 2025

Language: Английский

Citations

1
Mechanism of leaching zinc from low-grade zinc oxide by ultrasonic enhancement DOI
Yun Dang, Zhifei Yang,

Guo Lin

et al.

Chemical Engineering and Processing - Process Intensification, Journal Year: 2025, Volume and Issue: unknown, P. 110203 - 110203

Published: Feb. 1, 2025

Language: Английский

Citations

0
Zinc precipitation from ammonia leaching solutions of electric arc furnace dust by acetic acid DOI

Lingqiao Guo,

Qiang An, Zhi Li

et al.

International Journal of Chemical Reactor Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

Abstract Hydrometallurgical processes are considered essential for recovering zinc resources from electric arc furnace dust (EAFD). The precipitation of is crucial to the entire hydrometallurgical process, as it impacts both quality products and efficiency process. This study investigated process ammonia–ammonium bicarbonate leached solutions using acetic acid a precipitant. variation in alkalinity total ammonia during recovery was studied, properties zinc-precipitating were systematically analyzed. Zinc could be quantitatively precipitated purified EAFD leachate acid, achieving up 85 % high-grade hydrozincite (Ζn 5 (CO 3 ) 2 (OH) 6 ). During concentration decreased continuously with increasing precipitant addition, while certain value then remained constant. High-grade Ζn obtained, characterized by needle-and-whisker crystal morphology. precipitate thermally decompose ZnO within temperature range 200–300 °C. These results provide valuable parameters industrial treatment EAFD.

Language: Английский

Citations

0
Clean treatment of zinc-bearing dust: zinc-iron separation and nano zinc oxide preparation based on low-temperature roasting and water leaching process DOI

Zhanhao Wang,

Siyuan Yang, Bo Chen

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133527 - 133527

Published: May 1, 2025

Language: Английский

Citations

0
Investigation of the Leaching Kinetics of Zinc from Smithsonite in Ammonium Citrate Solution DOI Creative Commons

Huiqin Chen,

Dandan Wu, Ziang Wang

et al.

Metals, Journal Year: 2024, Volume and Issue: 14(5), P. 519 - 519

Published: April 29, 2024

In this study, the response surface method is used to develop a model for analyzing and optimizing zinc leaching experiments. An investigation into kinetics of smithsonite in ammonium citrate solution also conducted. A studied order represent these effects. The experimental data show that an increase temperature, concentration, stirring speed has positive impact on rate, while particle size negative it. optimal conditions consist temperature 70 °C, concentration 5 mol/L, 38 µm, rotational 1000 rpm. Under conditions, rate from 83.51%. It speculated kinetic will change when higher than 60 °C. When lower process under control shrinking core chemical reactions. calculated activation energy reaction equal 42 kJ/mol. can be described by following equation: 1−1−x1/3=k0⋅(C)0.6181⋅r0−0.5868⋅SS0.6901exp⁡−42/RT]t. This demonstrates as effective clean agent.

Language: Английский

Citations

2
Application of a Simple Pretreatment in the Process of Acid Leaching of Electric Arc Furnace Dust DOI Creative Commons
Vanja Trifunović, Snežana Milić, Ljiljana Avramović

et al.

Metals, Journal Year: 2024, Volume and Issue: 14(4), P. 426 - 426

Published: April 4, 2024

Experimental investigations of the effectiveness pretreatment acid leaching process a representative sample electric arc furnace dust (EAF dust) and characterization were performed. As EAF is globally defined as hazardous solid industrial waste, it contains high percentage zinc other useful components, in this paper, application will be carried out order to increase efficiency further leaching, all with aim using secondary raw material for metal valorization. The involved simple distilled water. Under following optimal conditions: time—30 min, ratio liquid phase—1:10, temperature—ambient, stirring speed—500 rpm, reduction content water-soluble components was achieved, namely, 83% Cl, 92% K, 74% Na, 14% Cd, 15% Ca, 19% F. enables significantly better filtration suspension increases sulfuric solution, compared direct dust.

Language: Английский

Citations

1
Synchronous Recovery and Kinetic Behavior of Zinc and Iron from Electric Arc Furnace Dust DOI
Chen Li, Fen Jiao, Hongbin Ling

et al.

Published: Jan. 1, 2024

Recycling electric arc furnace dust (EAFD) is significant for environmental security and resource recovery. To realize the short-flow recovery high-value utilization of zinc iron from dust, an innovative synchronous smelting reduction technology was proposed to treat EAFD. In this study, promoting mechanism reaction kinetics Zn Fe EAFD by were investigated. The results indicated that volatilization turned out be a two-staged model, in which controlled nucleation growth CO bubbles boundary initial stage respectively, diffusion ZnO FeO molten slag C/Slag interface later stage. presence wustite (FeyZn1-yO) solid solution primary factor limiting FeO. Optimizing composition, especially addition Na2CO3, could reduce formation solution, promote mass transfer efficiency phase. addition, carburized (dissolved carbon) crucial enhancing activity, generation uniform phase enhanced carburization alter method pathway. This transformation converts indirect between into more efficient direct dissolved carbon.

Language: Английский

Citations

0
Effect of H3PO4 coordination on vanadium extraction and iron separation in a H2SO4 leaching system DOI Creative Commons
Xuxia Zhao, Yimin Zhang,

Nannan Xue

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(50), P. 37404 - 37418

Published: Jan. 1, 2024

A novel complex acid leaching route for extracting V is proposed. The selectivity of the H 3 PO 4 –H 2 SO system superior to . Fe 3+ coordinated with 3− reduce impurity; separated and Fe.

Language: Английский

Citations

0
Mechanism of Leaching Zinc from Low-Grade Zinc Oxide by Ultrasonic Enhancement DOI
Yun Dang,

Guo Lin,

Zhifei Yang

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0