Results 11 to 20 of about 215 (159)

Carbon Dioxide as a Sustainable Reagent in Circular Hydrometallurgy. [PDF]

ChemSusChem
Carbon dioxide is a useful reagent in hydrometallurgy and it can help to transform linear hydrometallurgical flowsheets into circular ones. Examples of applications of CO2 are pH control, the regeneration of acids used as lixiviants, or as a reagent for precipitation of metal carbonates. A new development is the solvent‐extraction‐assisted formation of
Rivera RM, Binnemans K.
europepmc   +2 more sources

Electrorefining of copper and anode passivation

Journal of MMIJ, 2020
In the process of electrorefining of copper, application of higher current density increases the tendency of anode passivation. The passivation disrupts the sound operation of the electrorefining process, reducing the current efficiency and the quality ...
Hideaki SASAKI, Yuma NINOMIYA, Toru H. OKABE   +2 more
doaj   +1 more source

Electrorefining Process of the Non-Commercial Copper Anodes

Metals, 2021
The electrorefining process of the non-commercial Cu anodes was tested on the enlarged laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. The real waste
Radmila Markovic, Vesna Krstic, Bernd Friedrich, Srecko Stopic, Jasmina Stevanovic, Zoran Stevanovic, Vesna Marjanovic   +6 more
doaj   +1 more source

Passivation Behaviour of Anode in Copper Electrorefining Using Recycled Low-grade Copper Anode

Journal of MMIJ, 2017
Cu electrolysis was performed using low-grade copper anode with purity 78.7 mass% at a anode current density of 200 A・m-2 in an unagitated sulfate solution containing 0.596 mol・dm-3 of Ni2+ ions as impurity at 60 ℃, and the structure of anode slime ...
Koudai TOKUSHIGE, Kohei MORI, Satoshi OUE, Hiroshi MATSUSHIMA, Kazunari SUZUKI, Hiroaki NAKANO   +5 more
doaj   +1 more source

Reduction of Marine Bivalve Mollusc (Anadara granosa) using Impressed Current Anti Fouling (ICAF) to Prevent the Biofouling [PDF]

E3S Web of Conferences, 2020
Fouling is an adverse problem for ship. Fouling itself is some kind of marine biota like shells, mussels, or barnacles, which grow and live on the surface of ship’s hull or inside the ship’s piping system.
Pratikno Herman, Sulistiyaning Titah Harmin, Handayanu, Priyanto Moontera   +3 more
doaj   +1 more source

Characterization and process development for the selective removal of Sn, Sb, and As from anode slime obtained from electrolytic copper refining [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2018
The aim of this work was to develop a process for the removal of Sn, Sb and As from anode slime out of copper refinery to disburden a subsequent pyrometallurgical processing for precious metals refinement.
Steinlechner S.
doaj   +1 more source

Selenium and Tellurium Separation: Copper Cementation Evaluation Using Response Surface Methodology

Metals, 2022
In recent years, high demands for Se and Te in the solar panels and semiconductors industry have encouraged its extraction from primary and secondary sources.
Seyedreza Hosseinipour, Eskandar Keshavarz Alamdari, Nima Sadeghi   +2 more
doaj   +1 more source

Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes

International Journal of Electrochemical Science, 2013
The use of copper anodes with non standard content of impurities for the treatment of waste, sulphur acid solutions that came as a result of the industrial process of electrolytic copper refining was investigated. Those solutions contain the high content
Radmila Markovic, Jasmina Stevanovic, Milica Gvozdenovic, Branimir Jugovic, Aleksandar Grujic, Dragutin Nedeljkovic, Jasna Stajic-Trosic   +6 more
doaj   +1 more source

Extraction of copper and gold from anode slime of Sarcheshmeh Copper Complex [PDF]

Journal of the Southern African Institute of Mining and Metallurgy, 2016
A hydrometallurgical route was developed to extract metals such as gold, silver, copper, and selenium from anode slime from Sarcheshmeh Copper Complex in Iran. For the extraction of copper by leaching, the anode slime was heated and stirred with 4 M sulphuric acid in the presence of oxygen.
Dehghanpoor, M.H., Zivdar, M., Torabi, M.   +2 more
openaire   +3 more sources

Purification of crude selenium by vacuum distillation and analysis

Journal of Materials Research and Technology, 2020
In this study, metallurgical grade crude selenium (99.4%), comprehensively recovered from copper electrolysis anode slime, was purified to 99.992% through triple consecutive vacuum distillation (TCVD) on a laboratory scale.
Guozheng Zha, Yunke Wang, Minqiang Cheng, Daxin Huang, Wenlong Jiang, Baoqiang Xu, Bin Yang   +6 more
doaj   +1 more source