Leaching behavior of aluminum, copper, iron and …
Toxicity characteristic leaching procedure (TCLP) tests were conducted to investigate the environmental hazards associated with the leaching of aluminum (Al), …
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The leaching behavior of copper and iron recovery …
Under the optimized leaching conditions, the maximum copper leaching recovery of 82.18% was reached. A high-quality iron concentrate with Fe content of …
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Characterisation and leaching behaviour of granulated iron …
The pH value for the leaching tests of copper slag is usually in the range of 7–10, in which the solubility of metal ions is at its lowest. ... HG, Sohn HY. Effects of CaO, Al2O3, and MgO additions on the copper solubility, ferric/ferrous ratio, and minor-element behavior of iron-silicate slags. Metall Mater Trans B Process Metall Mater ...
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Behavior and Kinetics of Copper During Oxygen Pressure Leaching …
In this paper, a novel process leaching complex chalcopyrite without acid under oxygen pressure is proposed, and the leaching behavior and kinetic characteristics of copper in the complex chalcopyrite is studied. The results show that in the process of oxygen pressure leaching of complex chalcopyrite the oxidation dissolution of FeS2 …
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Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the …
The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
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Leaching Behavior of Aluminum, Copper, Iron and Zinc …
124 leaching behavior, and (4) identify the mechanisms controlling the release of metals and minerals . 125 Two different fly ashes (Class C and F) and blast-furnace steel slag were selected for ...
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Leaching of iron from copper tailings by sulfuric acid: …
Traditional leaching and recovery technology for copper tailing focuses on copper but neglects the leaching of iron. With the increase in applications and demands …
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Copper Leaching Behavior of Iron-Oxide Hosted …
Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium. Authors: Xiaobo Min. Central South University. Hitoshi Watanabe. …
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Solvometallurgical process for extraction of copper from …
With more FeCl 3 present in the leaching solution, more copper and iron were dissolved. The leaching percentage of copper increased to 80% with 0.5 mol L −1 of FeCl 3. In other words, 1 mL of 0.5 mol L −1 of FeCl 3 in EG could extract copper from 40 mg of chalcopyrite quantitatively. When further increasing the FeCl 3 concentration to 1 …
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Leaching of iron from copper tailings by sulfuric acid: behavior
On the other hand, metal ions contribute to the liquid catalytic oxidation of SO 2, 15,16 and elements such as iron and silicon are important components for water treatment 17–19 and soil remediation. 20 Thus, it is important to explore the leaching behavior of metals in copper tailings to improve the application possibility of copper tailings.
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Leaching of iron from copper tailings by sulfuric acid: …
leaching behavior with respect to iron has rarely been reported. Herein, a theoretical analysis of the leaching of iron from copper tailings was performed. Then, the effects of key factors on iron leaching were investigated, including the reaction temperature, sulfuric acid concentration, ratio of solid to liquid (S/L ratio), and stirring speed.
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Leaching behavior of aluminum, copper, iron and zinc …
Leaching behavior of aluminum, copper, iron and zinc from cement activated fly ash and slag stabilized soils Waste Manag. 2019 Jul 15;95:334-355. doi: 10.1016 ... Fe and SO 4 showed cationic leaching behavior where concentrations decreased with an increase in effluent pH. Additionally, the leaching controlling …
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Leaching behavior of aluminum, copper, iron and zinc …
leaching behavior, and (4) identify the mechanisms contr olling the release of metals and minera ls. 124 Two different fly ashes (Clas s C and F) and blast - furnace st eel slag were s elected for ...
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Extraction of Iron and Other Metals from Copper …
Afterwards, it is seen in Table 1 that time does not influence the iron concentration, as the behavior is practically constant, remaining in the order of 749.40 and 808.50 mg/L (Figure 8b). This can be attributed …
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Pressure Leaching of Copper Slag Flotation Tailings in …
In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. SFT contains large amounts of valuable metallic compounds, such as copper, cobalt, and zinc. A representative SFT sample containing 0.50% Cu, 0.148% Co, 3.93% Zn, and 39.50% Fe was used in …
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Leaching of iron from copper tailings by sulfuric acid: behavior
In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1, stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120 min), 66.45% of Fe, along with 65.32% of Zn and 59.95% of Cu ...
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Kinetic Investigation on Leaching of Copper from a Low-Grade Copper
Also, the leaching recovery was found to be 97.2% for copper and 0.58% for iron at 200 °C. Despite the extensive works performed on the leaching behavior of copper, there is still little information on the secondary reserves, especially on kinetics modeling, so this paper is focused on this issue.
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The leaching behavior of copper and iron recovery …
The leaching behavior of copper and iron recovery from reduction roasting pyrite cinder. | Semantic Scholar. DOI: 10.1016/j.jhazmat.2021.126561. Corpus ID: …
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Experimental and Kinetic Modeling Investigation of Copper …
Abstract In the present work, the leaching behavior of copper from an oxide/sulfide ore was assessed in two work phases including process optimization and kinetics modeling. In the first phase, the individual and synergistic impacts of the influential parameters such as sulfuric acid concentration, liquid/solid ratio, pulp mixing rate, …
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Chalcopyrite leaching in novel lixiviants
1. Introduction1.1. Occurrence and characteristics of chalcopyrite. Much of the world's economic copper resource occurs as chalcopyrite (CuFeS 2), commonly at low grades (≤ 0.5% Cu).Chalcopyrite is the dominant Cu ore mineral in most porphyry deposits, which make up an estimated 70% of the global Cu resource (Singer, 2017), and is also …
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Leaching of iron from copper tailings by sulfuric …
Traditional leaching and recovery technology for copper tailing focuses on copper but neglects the leaching of iron. With the increase in applications and demands of iron …
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The leaching behavior of copper and iron recovery …
In this paper, a novel method to extract copper and iron from the PyC by reduction roasting-leaching-magnetic separation was proposed. The effect of various parameters on the copper leaching behavior were studied, and the corresponding …
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A kinetic study on the mechanisms of metal leaching from …
Preparation of copper-immobilized pure phases. Previous studies have revealed that both CuAl 2 O 4 and CuAlO 2 phases were major copper-hosting phases after sintering with Al-rich precursors. Therefore, samples with single CuAl 2 O 4 or CuAlO 2 phase were prepared for the prolonged leaching experiments, and the used γ-Al 2 O 3 …
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Regulation of lead oxide on Cyaniding Behavior of chalcopyrite
The results show that PbO has little effect on iron leaching. This is mainly due to the interaction between dissolved iron and OH – in the alkaline cyanidation system, resulting in the precipitation of iron hydroxide [4]. However, PbO had dual effects on the leaching of copper from chalcopyrite in cyanide solution.
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Column bioleaching characteristic of copper and iron from …
The present work describes the leaching behavior of copper and iron under controlled column bioleaching with acid mine drainage from the mining pit at different leachate treatments (with or without recirculation), irrigation duration, temperature and pH. 2. Materials and methods
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Copper Leaching Behavior of Iron-Oxide Hosted Copper …
In this paper, the leaching behavior of IOCG ore in sulfuric acid medium containing hydrogen peroxide were studied in shaking flask and rolling-ball (RB) vessel. The dissolved copper and iron, pH ...
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Sustainable and Comprehensive Utilization of Copper Slag: …
Large amounts of copper slag are produced every year and major fractions of it are currently disposed, not withstanding the multiple ways the material can be used. Application of the slag is often limited by the presence of hazardous elements and their leaching behavior so they can potentially pollute soil, surface water and underground …
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Effect of temperature on leaching behavior of copper …
LIU et al [4] noted that all of the copper minerals leached in the solution, copper silicates exhibited the poorest propensity to leach. Figure 4 shows the copper leaching rates of bonded copper minerals at different temperatures. 3.2.2 Leaching at lukewarm temperature 82.04% of the copper leaching rate was achieved at LT.
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Leaching of Metals from e-Waste: From Its Thermodynamic …
The aim of this study is to design and develop an efficient leaching process based on a fundamental and theoretical thermodynamic analysis and the optimization of the operation parameters via the response surface methodology (RSM). Using this methodology, the design of a leaching process for the recovery of copper, silver, and …
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Leaching of iron from copper tailings by sulfuric acid: …
Traditional leaching and recovery technology for copper tailing focuses on copper but neglects the leaching of iron. With the increase in …
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