scholarly journals Synergistic effects of ferric sulfate addition and mechanical activation on leaching of Sarcheshmeh copper sulfide concentrate

2021 ◽  
Vol 3 (3) ◽  
pp. 171-175
Author(s):  
Mehdi Shahedi Asl ◽  
Hekmat Razavizadeh
Keyword(s):  
Mechanical Activation ◽  
Copper Sulfide ◽  
Synergistic Effects ◽  
Ferric Sulfate ◽  
Sulfide Concentrate

scholarly journals Recovery of Copper from Copper Sulfide Concentrate by Sulfation Roasting

2015 ◽  
Vol 04 (02) ◽  
pp. 9-13 ◽  
Author(s):  
Yaming Zhao ◽  
Yanan Hou ◽  
Yuguo Cui ◽  
Hongwei Liang ◽  
Luanning Li
Keyword(s):  
Copper Sulfide ◽  
Sulfation Roasting ◽  
Sulfide Concentrate

scholarly journals Effect of Mechanical Activation on the Kinetics of Copper Leaching from Copper Sulfide (CuS)

Metals ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 150 ◽  
Author(s):  
Jaeryeong Lee ◽  
Suyun Kim ◽  
Byoungjin Kim ◽  
Jae-chun Lee
Keyword(s):  
Mechanical Activation ◽  
Copper Sulfide ◽  
Copper Leaching ◽  
Kinetics Of

scholarly journals On kinetics of impurity extraction from iron concentrate obtained by rough copper concentrate hydrometallurgical processing

2020 ◽  
Vol 24 (5) ◽  
pp. 1150-1158
Author(s):  
Lyutsiya Karimova ◽  
◽  
Tagir Khazhimukhametov ◽  
Yerlan Kairalapov ◽  
Alexander Yun ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Production Process ◽  
Copper Sulfide ◽  
Raw Materials ◽  
Acid Leaching ◽  
High Quality ◽  
X Ray ◽  
Iron Concentrate ◽  
Nitric Acid Leaching ◽  
Sulfide Concentrate

The purpose of the paper is to study the physical and chemical features of high-quality iron concentrate precipitation from nitric acid leaching solutions of low-grade copper-sulfide raw materials, and to obtain a highly profitable product which is suitable for direct processing at ferrous metallurgy enterprises. To conduct the experiments on obtaining impurity rich and depleted iron concentrate a hydrolytic precipitate containing 54.6% iron and numerous impurities obtained as a result of processing of nitric acid leaching solutions of rough copper sulfide concentrate from the Zhezkazgan deposit is used. Analytical studies of initial materials and resulting products of the processes under investigation are conducted using the modern certified methods including the x-ray spectral, x-ray phase, atomic absorption analysis, mass spectrometry method with inductively coupled plasma. We have obtained a high-quality iron concentrate containing minimal amounts of silicon, aluminum, phosphorus and sulfur as well as partial and generalized equations that give an idea of the influence of the studied factors on the indicators of the iron concentrate production process. The apparent activation energy of the process has been calculated - 46.77 kJ/mol. It probably indicates the presence of diffusion complications caused by the formation of solid products passivating the surface of the material being dissolved. The principal possibility of obtaining high-quality iron concentrate from processing poor copper-sulfide concentrate middlings of the Zhezkazgan deposit is shown. The mathematical processing of experimental data has resulted in the determination of equations that characterize the degree of influence of the studied factors on the process indicators. It is found out that the production process of the saleable iron concentrate proceeds in the mode of diffusion restrictions. It is the first time, when multivariate generalized dependencies are obtained for the process under consideration and their analytical transformations are performed. These methods can be used to study the analogous processing of similar metallurgical raw materials.

Study on Comprehensive Utilization of Arsenic from High Arsenic-Bearing Copper Sulphide Concentrate

2012 ◽  
Vol 610-613 ◽  
pp. 2421-2424
Author(s):  
Hai Yun Xie ◽  
Zhuo Yue Lan ◽  
Dian Wen Liu ◽  
Xiong Tong
Keyword(s):  
Copper Sulfide ◽  
New Technology ◽  
Xrd Analysis ◽  
Forming Process ◽  
Bacterial Leaching ◽  
Comprehensive Utilization ◽  
Arsenic Copper ◽  
Sulfide Concentrate ◽  
Copper Arsenate ◽  
High Arsenic

In this paper a new technology for comprehensive utilization of arsenic in high-arsenic copper sulfide concentrate has been studied out. Firstly,the concentrate was bioleached by moderate thermophile Sulfobacillus thermosulfidooxidans, under the suitable leaching conditions, the experiments results show that the concentrate is bioleached 82% of Cu,78% of As and 40% of Fe. Secondly, removal of Fe3+ by solvent extraction with P204 from bacterial leaching solution are presented, and Fe3+ is extracted up to 93％, and the content of Fe3+ in raffinate is under 9 mg/L. The comprehensive utilizations of most of arsenic from leaching liquor after removal Fe3+ has been carried out. When the temperature is 80 to 90°C, pH at 4.0~5.0 and ammonia as a neutralizer, the results of XRD analysis show that the forming process of copper arsenate is complicated, and the formed molecular formulas are in different types, and they are CuAs2O4, Cu5As2O10•5H2O, C4H6As6Cu4O16, Cu5As4O15•9H2O and Cu2AsO4OH•3H2O. The comprehensive utilizations of most of arsenic are in the form of copper arsenate, and the content of arsenic is 9.11~35.82mg/L in solution after its precipitated. This study provides a new treatments and process for the utilization of arsenic in the high-arsenic copper sulfide concentrate.

Effect of mechanical activation on thiosulfate leaching of gold from complex sulfide concentrate

2011 ◽  
Vol 21 (12) ◽  
pp. 2744-2751 ◽  
Author(s):  
Mohsen HASHEMZADEHFINI ◽  
Jana FICERIOVÁ ◽  
Emad ABKHOSHK ◽  
Behrouz Karimi SHAHRAKI
Keyword(s):  
Mechanical Activation ◽  
Complex Sulfide ◽  
Thiosulfate Leaching ◽  
Sulfide Concentrate

scholarly journals Leaching and Selective Recovery of Cu from Printed Circuit Boards

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1034 ◽  
Author(s):  
Manivannan Sethurajan ◽  
Eric D. van Hullebusch
Keyword(s):  
Copper Sulfide ◽  
Printed Circuit Boards ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Ferric Sulfate ◽  
Molar Ratio ◽  
Circuit Boards ◽  
Optimum Conditions ◽  
Selective Recovery ◽  
Printed Circuit

Printed circuit boards (PCBs), a typical end-of-life electronic waste, were collected from an E-waste recycling company located in the Netherlands. Cu and precious metal concentration analyses of the powdered PCBs confirm that the PCBs are multimetallic in nature, rich, but contain high concentrations of Cu, Au, Ag, Pd, and Pt. Ferric sulfate concentration (100 mM), agitation speed (300 rpm), temperature (20 °C), and solid-to-liquid ratio (10 g·L−1) were found to be the optimum conditions for the maximum leaching of Cu from PCBs. The ferric sulfate leachates were further examined for selective recovery of Cu as copper sulfides. The important process variables of sulfide precipitation, such as lixiviant concentration and sulfide dosage were investigated and optimized 100 ppm of ferric sulfate and (copper:sulfide) 1:3 molar ratio, respectively. Over 95% of the dissolved Cu (from the multimetallic leachates) was selectively precipitated as copper sulfide under optimum conditions. The characterization of the copper sulfide precipitates by SEM-EDS analyses showed that the precipitates mainly consist of Cu and S. PCBs can thus be seen as a potential secondary resource for copper.

Changes in the mineral phases during the processing of a copper sulfide concentrate

2007 ◽  
Vol 48 (1) ◽  
pp. 31-39
Author(s):  
A. Khamkhash ◽  
A. S. Medvedev ◽  
L. N. Krylova
Keyword(s):  
Copper Sulfide ◽  
Mineral Phases ◽  
Sulfide Concentrate
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