Subsequently, the recovery rate in froth flotation was measured depending on the initial copper concentration (0.95%). ... Processing oxide-sulfide copper ores using ammonium chloride. Russ. J. Non-Ferrous Met., 51 (2010), pp. 377-381, 10.3103/s1067821210050019. View in Scopus Google Scholar.
DetailsThe effect of temperature on the rate of copper dissolution from CuO when leached in the three inorganic acids was investigated over a temperature range of 30–50 °C at acid concentration of 0.5 M, stirring speed of 400 rpm and l/s = 10 ml/g. Fig. 5 shows that temperature has a significant effect on the acceleration of copper dissolution with …
DetailsIf there are no other economic elements within the ore a mine might choose to extract the uranium using a leaching agent, usually a low molar sulfuric acid. Similar to copper oxide heap leaching, also using dilute sulfuric acid. The final product is yellowcake ((U_3O_8)) and requires significant further processing to produce fuel-grade feed.
DetailsThe oxidation of copper mineral dissolves to generate copper sulphate that will be replaced with iron filings to restore copper ions to metallic copper for precipitation. …
DetailsTables 32 and 33 can therefore only be regarded as approximations. Table 32 gives the cost of the straightforward treatment in air-lift machines of a simple ore such as one containing easily floated sulphide copper minerals, and Table 33 that of the two-stage selective flotation of a lead-zinc or similar complex ore.
DetailsThe extraction of copper minerals from unpayable ores containing a low concentration of copper in the ore (oxide, mixed ores, and secondary sulfide ores) can be affected by the leaching of ground ore followed by solvent extraction and electrowinning. This technology is applied in a number of large copper productions, including Escondida …
DetailsAgitation leaching is a promising technology in hydrometallurgy for treating copper–cobalt oxide ores. In this work, the behavior of oxide ores containing around 2.3% Cu and 0.3% Co received from Congo was investigated for varying particle size, acidity, pulp density, temperature, leaching time, and reduction potential. XRD, optical …
DetailsIt was found that the quantity of copper dissolved was increasing with growth of the values of all the parameters namely temperature, concentration of NaNO3 and H2SO4. Also, …
DetailsThe ore used for extraction is copper pyrites, which is crushed, concentrated and then heated in the presence of air. During heating the moisture gets expelled and the copper …
DetailsKeywords: Oxide and sulphide copper ore, processing, mixtures. 1 Introduction. This . The leaching of a copper oxide and sulphide cop. ... parameters namely temperature, concentration of NaNO. 3. and H. 2. SO. 4. Also, the influence of . ferric ion on the leaching of chalcopyrite was investigated [2]. It was found that ferric iron plays
Details1. Introduction. The continuous development of the global economy has resulted in a high demand for copper production and high copper consumption [1], [2], and exploitation and effective use of copper oxide mineral resources have attracted attention [3].Copper oxide deposits evolve from shallow copper sulfide deposits after long-term …
DetailsThe initial copper concentration in leachate of LS-ore was much higher (>150 mg/L) than that of the other two ores, as the component of acid-soluble copper ore, for example oxide copper ore (Table 2) (Velásquez-Yévenes and Quezada-Reyes, 2018).
DetailsThe copper-cobalt ore received from Congo contains around 2.0% copper and 0.356% cobalt, with oxidation rates of 92.09% and 88.57% for Cu and Co, respectively. Malachite and cornetite are the main copper minerals, while heterogenite and carrollite are the main Co-bearing minerals. To optimize the leaching efficiency of Cu and Co for this …
DetailsThe copper oxide ore sample used for the experiments was obtained from the Katanga province, D.R. Congo. ... thereafter no change of copper concentration was observed. The linear behaviour of the leaching of copper is given by%Cu = 0.0191t + 94.368 (with lower R 2 value of 0.57) ...
DetailsZinc ore refers to the naturally occurring rock or mineral that contains a significant concentration of zinc. Zinc is a chemical element with the symbol Zn and atomic number 30. It is a bluish-white, lustrous metal that is known for its excellent corrosion resistance, malleability, and conductivity. Zinc is an important industrial metal used in …
DetailsThe copper phase of the Luanshya oxidized copper ore was analyzed by chemical analysis, and the results are listed in Table 2. The results show that the copper ore has a high degree of oxidation. The total distribution rate of free copper oxide was 29.61wt%, and the combined copper oxide distribution rate was 67.77wt%.
DetailsThe acid consumptions curves for the oxide copper ore (number 3) with a high iron oxide-tactile gangue were somewhat different than those of oxide copper-porphery gangue ore number 1. ... The acid concentration of the unknown can then be obtained from the conversion table. In this example, the final pH reading was 1. 55, or …
DetailsDevelopment and optimization of mixed sulphide/oxide copper ore treatment at Kansanshi and Chander, 1992).The sulphidizer concentration can be controlled by measuring the Es potential of the pulp, using a sulphide ion-selective electrode. The reaction between the sulphidizer and the malachite is optimum at an Es potential
DetailsCopper oxide ore, or low-grade copper sulfide ore exploited from the surface layer or corners in the mining of copper sulfide deposits, is difficult to concentrate through mineral dressing. ... The strip liquor (copper ion concentration 45 g/L, sulfuric acid concentration 150 g/L) is delivered to copper electrodeposition process. Fig. 4. Copper ...
DetailsThe copper concentration in the leach solution ranged from 0.80 to 1.75 g dm-3. The total Cu recovery rate ranged from 30 to 56 %, whereas the ... Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by ...
DetailsThe aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...
DetailsCopper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human …
DetailsFirst ores must be concentrated and separated from their earthly impurities. Concentration of ores may be achieved by froth flotation in which an ore is contained in a froth that floats at the top of a water vat. After the ore has been concentrated it must be roasted to a high temperature allowing for the desired metal to be oxidized.
Detailsthe dissolution rate of copper increases with increasing L/S ratio to a certain amount and, then, reduces with a further increment; moreover, a Liquid/Solid (L/S) Figure 2. E ect of liquid-to-solid (L/S) ratio on the dissolution of copper oxide ore. Figure 3. E ect of sulphuric acid concentration on the dissolution of copper oxide ore.
DetailsOxide ore minerals: Oxide ore minerals are those that contain oxygen as a significant component. They can form through weathering and alteration of other minerals and are commonly found in oxidized ore deposits. Examples of oxide ore minerals include hematite (Fe2O3), magnetite (Fe3O4), cassiterite (SnO2), and bauxite (Al2O3·nH2O).
DetailsThe copper oxide ore was supplied from Manuel Antonio Matta Plant (Copiapó, Chile). The ore was crushed and milled to obtain a particle size below 150 μm. ... The concentration of Cu, Fe, Mn, Zn, Cd, Pb, Sb, As, Hg, and Bi in the aqueous solution was quantified using ICP-OES. After the leaching test, the residues were filtered, washed, dried ...
DetailsThis study investigated the operating parameters that affect the kinetic dissolution of copper and cobalt from sulfidic ores. The sulfuric acid concentration, temperature, sodium chloride concentration, particle size range, and leaching time were selected to deduce the kinetic mechanism of the leaching reaction. Other parameters, such as a stirring speed …
DetailsAbstract 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, …
Detailsin oxide copper ore particles, Int. J. Miner. Metall. Mater. ... Not only the curing time but also ionic concentration of sulfuric acid solution improve copper leaching efficiency in Chile ...
DetailsLow-grade sulfide ores are subjected to concentration operations, which include flotation, to obtain dry concentrates of around 30% of copper with 10–200 μm of grain size . ... As leaching agents, it is usual to employ diluted sulfuric acid (for copper oxide ores, carbonates, basic sulfates, and silicates), ...
DetailsThere is a significant number of literature reports on leaching of copper oxide ores in sulfuric acid solutions [7,8,9], processing of flotation waste in H 2 SO 4 solutions [10, 11], recovery of copper from waste of electrical [12, 13] and electronic equipment (WEEE) [14, 15] or extraction of copper from spent catalyst [16,17,18].
DetailsThe flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric sulfate solvent. ... The process proceeds from tank to tank with a continual decrease in acid strength and increase in copper concentration until it is finally withdrawn as pregnant solution from ...
DetailsThe concentrated ore is heated strongly with silicon dioxide (silica) and air or oxygen in a furnace or series of furnaces. The copper (II) ions in the chalcopyrite are reduced to …
DetailsDifferent methods are used to process copper sulfide ores depending on the concentration of copper within the ore — higher-concentrated ores can be separated via smelting, while lower ...
DetailsCopper oxides are more abundant near the surface, but are considered low-grade ore, with a lower concentration of copper. Although this requires more ore to be extracted and processed, this process is less expensive, so oxides can still be mined at a profit.
DetailsThe Democratic Republic of Congo copper oxide ore containing mainly malachite was leached in sulphuric acid. The effects of leaching time, pH, stirring speed, and temperature on the dissolution ...
DetailsCopper-cobalt ores typically contain cobalt ranging from 0.01 to 0.8 %, and their coexistence with copper results in a complex mineral composition [6].After flotation, it is feasible to separate the ore into copper-cobalt oxide and sulfide concentrates [7].The oxide concentrates primarily contain copper and cobalt in the forms of malachite, …
DetailsCopper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to its excellent electrical and thermal conductivity, high ductility, and resistance to corrosion. Copper is widely used in various …
DetailsIn this investigation, a laboratory-scale study to extract copper (Cu) from its oxide ore (0.425–11.2 mm particle size) was conducted using varied sulfuric acid (H2SO4) concentrations (0.05–0.5 M) as a lixiviant. Through a physicochemical and mineralogical analysis of real field ore samples from the Almalyk mine heap site (Tashkent, …
DetailsSection snippets Material. The copper oxide ore sample used for the experiments was obtained from the Katanga province, D.R. Congo. Commercial grade reagent, 98% H 2 SO 4 was used for the leaching tests. The sample was subjected to particle size distribution analysis which indicated that the ore sample had a P80 particle …
DetailsPE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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