Results 191 to 200 of about 540,025 (266)

Unraveling the Fluoride-Induced Interface Reconstruction Across Lead-Based Hierarchical MnO2 Anode in Zinc Electrowinning.

Environmental Science and Technology
Although the hierarchical manganese dioxide film electrode shows promise as a durable and catalytically active anode for zinc electrowinning, it often fails and deactivates when it is exposed to fluoride-rich environments.
C. Shi, Fan Yang, Chaoyi Chen, Yuanyu Chen, Binyuan Tang, Jiangyuan Yang, Cai Tan, Junqi Li, Hui Fu   +8 more
semanticscholar   +1 more source

Cementation for metal removal in zinc electrowinning circuits

Minerals Engineering, 2005
Step changes in technology, including adoption of new process configurations and chemistry, require modelling and experimental work for establishing process feasibility and process optimisation. In this work the results of such modelling and experimentation as applied to purification via zinc dust cementation of a zinc-bearing leachate are presented ...
S.J.G. Casaroli, B. Cohen, A.R. Tong, P. Linkson, J.G. Petrie   +4 more
openaire   +1 more source

Voltammetric Evaluation of Zinc Electrowinning Solution Containing Nickel

Journal of The Electrochemical Society, 1980
The effect of nickel impurity in zinc sulfate electrowinning solutions was studied using voltammetry techniques. The reactions occurring at various points on the polarization curve are proposed and comparisons made for both pure electrolyte and those containing nickel.
Yar‐Ming Wang, Thomas J. O'Keefe, William J. James   +2 more
openaire   +1 more source

Zinc Extraction from Zinc Plants Residue Using Selective Alkaline Leaching and Electrowinning

Journal of The Institution of Engineers (India): Series D, 2015
Annually, a great amount of zinc plants residue is produced in Iran. One of them is hot filter cake (known as HFC) which can be used as a secondary resource of zinc, cobalt and manganese. Unfortunately, despite its heavy metal content, the HFC is not treated.
Pedram Ashtari, Parviz Pourghahramani
openaire   +1 more source

Selective Acidic Leaching of Spent Zinc-Carbon Batteries Followed by Zinc Electrowinning

Metallurgical and Materials Transactions B, 2014
In this work, a selective acidic leaching procedure was employed for recycling zinc from spent zinc-carbon batteries. Leaching experiments were carried out in order to maximize zinc recovery and minimize manganese recovery in diluted sulfuric acid media.
Hossein Shalchian, Ali Rafsanjani-Abbasi, Jalil Vahdati-Khaki, Abolfazl Babakhani   +3 more
openaire   +1 more source

A zinc Electrowinning working condition recognition method based on multimodal information fusion

Proceedings of the 2024 2nd International Conference on Frontiers of Intelligent Manufacturing and Automation
Electrowinning is a key process that affects the yield and energy consumption of hydrometallurgical zinc, and the stability of electrowinning conditions will directly affect the quality of zinc products.
Geng She, Canzong Zhou, Canzong Zhou, Lili Chen   +3 more
semanticscholar   +1 more source

Experimental determination of the factors affecting zinc electrowinning efficiency

Journal of Applied Electrochemistry, 1988
A series of experiments were conducted to investigate the factors affecting the efficiency of zinc electrowinning. The experiments were conducted in 10-1 cells using a high purity industrial zinc sulphate solution. The lowest specific energy consumption achieved in the cells was 2637 kWh t−1 Zn under the following conditions: $$\begin{gathered} 70 ...
A. C. Scott, R. M. Pitblado, G. W. Barton, A. R. Ault   +3 more
openaire   +1 more source

Electrowinning of Zinc and Lead from Alkaline Solutions

2017
Electrowinning of zinc and lead from alkaline solutions depends on zinc or lead concentrations, temperature, current density, NaOH concentration, electrode distance and electrode material on current efficiency, and energy consumption of zinc or lead electrowinning. The optimum conditions for zinc electrowinning are zinc concentration 30–40 g/L, current
Zhao Youcai, Zhang Chenglong
openaire   +1 more source

A validated mathematical model for a zinc electrowinning cell

Journal of Applied Electrochemistry, 1992
A set of (95) equations forming a dynamic, nonlinear model of an industrial pilot-plant scale zinc electrowinning cell fed with high purity electrolyte is presented. Only the solution of the steady-state model is considered in this paper. Values for unknown model parameters have either been obtained from the literature or else estimated using ...
G. W. Barton, A. C. Scott
openaire   +1 more source

In situ synthesis of an Al and V co-doped TiO2 NTA interlayer-enhanced PbO2 composite for efficient zinc electrowinning.

Nanoscale
The high overpotential of the oxygen evolution reaction (OER) and the strong corrosion of the anode are the main problems currently faced by the zinc hydrometallurgical process.
Shengyou Su, Xuanbing Wang, Linjing Yang, Tianyang Liu, Junli Wang, Ruidong Xu   +5 more
semanticscholar   +1 more source