Results 11 to 20 of about 508 (188)

The Behaviour of Low Arsenic Copper Anodes at High Current Density in Electrorefining [PDF]

Archives of Metallurgy and Materials, 2023
Arsenic is the only beneficial impurity for copper electrorefining through inhibiting anode passivation and the formation of floating slimes. The behaviour of copper anodes with different content of arsenic were studied at high current density (>280 A/m ...
Xuyong Zhang, Silei Chen, Lu Li, Peng Yang   +3 more
doaj   +2 more sources

Challenges for development of technology for prevention of anode passivation during electrorefining of low-grade copper

Journal of MMIJ, 2020
Over the past years, the significance of recycling Cu and its accompanying metals has been increasing. However, the frequency of anode passivation increases during the electrorefining of copper when the copper anode contains a high concentration of ...
Hideaki SASAKI, Toru H. OKABE
doaj   +2 more sources

Investigations on Anode Quality in Copper Electrorefining

BHM Berg- und Hüttenmännische Monatshefte, 2008
Copper anodes have to have a certain quality in order to meet the requirements of subsequent electrorefining. The anode casting process is decisive for anode quality, which determines anodic dissolution behaviour during electrorefining. In order to determine the influences of the casting process and cooling conditions on chemical and physical anode ...
C. Wenzl, I. Filzwieser, G. Mori, J. Pesl   +3 more
core   +4 more sources

Electrorefining Electrolyte from Copper Plant Dust

MATERIALS TRANSACTIONS, 2002
An attempt was made to develop a suitable process for the recovery of copper from the dust sample of copper plant by sulphuric acid leaching with the idea that the resulting leached copper sulphate solution Could be used directly as electrolyte in the copper electrorefining plant.
Gorai, Bipra, Jana, Ranajit Kumar, Khan, Zahid Husain   +2 more
openaire   +3 more sources

Models for viscosity and density of copper electrorefining electrolytes

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING, 2017
Viscosity and density of copper electrorefining electrolytes affect energy consumption and purity of cathode copper. Decreasing the viscosity and density increases the rate of falling of the anode slimes to the bottom of an electrorefining cell and increases the diffusivity and mobility of ions. Increasing the falling rate of the anode slimes decreases
Aji, Arif T., Rintala, Lotta, Aromaa, Jari, Lundstrom, Mari, Kalliomaki, Taina   +5 more
openaire   +5 more sources

Forecasting Copper Electrorefining Cathode Rejection by Means of Recurrent Neural Networks With Attention Mechanism

IEEE Access, 2021
Electrolytic refining is the last step of pyrometallurgical copper production. Here, smelted copper is converted into high-quality cathodes through electrolysis.
Pedro Pablo Correa, Aldo Cipriano, Felipe Nunez, Juan Carlos Salas, Hans Lobel   +4 more
doaj   +2 more sources

Impact of 5-Amino-1H Tetrazole on Reducing Silver in Copper Cathodes during Electrorefining with High Silver Content Anode Plates

Metals
As the grade of the copper concentrate decreases and its composition becomes increasingly complex, the silver content in anode plates cast after fire refining increases, leading to a higher silver content in the copper cathode during electrorefining and ...
Chen Chen, Chu Cheng, Mengxin Wang, Haitao Liu, Xiaoheng Li, Kexing Song   +5 more
doaj   +2 more sources

Operando Characterization of Uranium Dendrite Growth in High-Temperature Molten Salt Electrochemistry by Synchrotron X-Ray Tomography and Diffraction. [PDF]

Adv Sci (Weinh)
An operando methodology combining synchrotron X‐ray micro‐computed tomography (SR‐µCT) and high‐energy X‐ray diffraction (HEXRD) investigates uranium dendrite electrodeposition in LiCl‐KCl‐UCl3 molten salt. This enabled in‐situ visualization of dendrite growth and ion diffusion dynamics.
Liu K, Tan T, Zhong Y, Wang Y, Bo T, Bai Z, Wang S, Zhang K, Huang W, Zeng J, Shi W.   +10 more
europepmc   +2 more sources

Effect of APMImBr ionic liquid on the migration of silver in copper electrorefining

Journal of Materials Research and Technology
As the grade of copper concentrate decreases and its composition becomes increasingly complex, the silver content in the anode plate casting after fire refining increases.
Chen Chen, Chu Cheng, Haitao Liu, Mengxin Wang, Jing Tian, Weiwei Lu, Xiaoheng Li, Shizhong An, Xiaowen Peng, Yankun Li, Yutao Cui, Kexing Song   +11 more
doaj   +2 more sources

Effect of process variables on oxidative pressurized acid leaching of copper electrorefining anode slimes

E3S Web of Conferences, 2016
Extraction of Cu, Ni, As and Te from copper electrorefining anode slimes was studied. Such parameters as sulfuric acid concentration, temperature and oxygen partial pressure had a positive effect on the oxidative pressurized acid leaching in the ...
Seisko Sipi, Aromaa Jari, Latostenmaa Petri, Forsen Olof, Lundstrom Mari   +4 more
doaj   +3 more sources