Copper extraction by sulfuric acid leaching is limited, since the native copper is not sufficiently reactive to free hydrogen from diluted acid solutions. Because of Get PriceSulphuric acid leaching of zinc and copper from - SAIMM. Experiments with the radiotracer were conducted in sulphuric and nitric acids.
Publication » Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium. Patent US4299810 - Leaching with sulfuric acid - Google Patents The process is primarily applied to decopperized copper anode slimes by first leaching such slimes with concentrated sulfuric acid under the specified conditions, ...
01-04-2019· Sulfuric acid leaching of copper rich slag with the optimized parameters can provide a copper rich process solution with iron as the main impurity metal. The solution can provide an attractive feed for integration into the industrial primary copper production with acceptable low Ni, As and Pb levels (43.6 g/L Cu, 9.4 g/L Fe, 0.3 g/L Ni, 0.1 g/L As, 0.2 g/L Zn, 0.01 g/L Pb).
01-07-2003· The copper (I) sulphide leaching is a second-order reaction with respect to the concentration of H 2 SO 4 (Fig. 14) and its rate equation is: (12) − d [ Cu 2 S] d t =k H [ H 2 SO 4] 2 where: kNa and kH are rate constants; [NaNO 3] and [H 2 SO 4] are the leaching reagent concentrations.
21-07-2016· This article discusses results obtained from the sulfuric acid leaching of dust that is left from reduction smelting at the Middle Ural Copper Smelter. In addition to copper and zinc, the dust contains substantial amounts of lead and arsenic (up to 30%). The computer program Statgraphics was used to plan experiments and analyze the results.
leaching step and that produced in the extraction of copper from the pregnant leach solution (PLS) is available for use in a copper heap leaching unit process. In this way, an acid credit to the operating cost is derived (Dreisinger, 2006). Secondly, it is worth noting that the POX residue can be leached in
Abstract In this research, a hydrometallurgical method for recovery of copper from copper rich converter slag is investigated. The main copper containing phases of the slag are cuprite (Cu2O), delafossite (CuFeO2) and metallic copper (Cu). The study investigates the effect of particle size, temperature, acid concentration, agitation and leaching time under oxidizing conditions.
Sulfuric acid leaching of copper rich slag with the optimized parameters can provide a copper rich process solution with iron as the main impurity metal. The solution can provide an attractive feed for integration into the industrial primary copper production with acceptable low Ni, As and Pb levels (43.6 g/L Cu, 9.4 g/L Fe, 0.3 g/L Ni, 0.1 g/L .
sulphuric acid Most leaching operations use aqueous solutions of such acid that contain less than 20 g/L1 of sulphuric acid Therefore, this technical contribution goes a little bit further and is aimed at generating sulphuric acid, biologically, by mixing, in particular, a copper oxide ore with elemental
01-07-2003· Leaching of copper(I) sulphide by sulphuric acid solution with addition of sodium nitrate. ... Sodium nitrate and sulphuric acid of pa purity were used. All leaching experiments were carried out in a glass reactor equipped with a Teflon stirrer, condenser, thermometer, glass funnel for adding the solid sample and a sampling device.
Atmospheric leaching with sulphuric acid was found to be surprisingly efficient for copper, zinc and cobalt recovery from the by- product (middlings) – tailings from the 1 …
Copper mining from oxide ores demand sulfuric acid that percolates the heap leaching pill. From there acid is debilitated while copper goes to the electro winning process. LEWA process pumps are used to reinject sulfuric acid at 98% into the main pipelines that go to the heap leach sprinklers, recovering the concentration with safety, efficiency and long lifecycle, while reducing chemicals ...
Copper leaching with sulphuric acid pdf "Significant amounts of cobalt, a strategic and critical metal, are present in readily accessible spent copper leach solutions; for example, recovery of cobalt at two major U.S. copper operations could produce about 1,300,000 lb CO …
Leaching of iron from copper tailings by sulfuric acid: behavior, kinetics and mechanism†. Lei Tao a, Langlang Wang a, Kanghuai Yang a, Xueqian Wang * a, Lu Chen * b and Ping Ning a a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China. E-mail: [email protected]; Tel: +86 13888183303 b Faculty of Business …
Leaching of copper ores in sulfuric acid with sodium nitrate/nitrite solutions resulted in copper extraction rates of 80-99 wt % [28,29]. Vračar et al. [30] ...
22-01-2017· Leaching Sulfides by Sulphuric Acid: Copper Boiling Pots. These are ordinary cast-iron pots. The large one for boiling sulphides is 47.5 inches in diameter and 3... Dissolving Tank. This is 4 by 8 by 2 feet, made of 2-inch rough boards dowelled, with the ends let into the sides ½-inch... Filters. ...
Leaching of Copper from Cuprous Oxide in Aerated . Leaching of Copper from Cuprous Oxide in Aerated Sulfuric Acid Ilhwan Park1, Kyoungkeun Yoo1,*, Richard Diaz 3Alorro2, Minseuk Kim3 and Sookyung Kim 1Department of Energy Resources Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea 2Department of Mining Engineering and Metallurgical Engineering, …
Copper and cobalt recovery from pyrite ashes of a sulphuric acid . The leaching tests investigated the impact of the variables, including different solvents, acid concentrations and leach temperatures on the copper and cobalt
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, were leached from the tailings.
27-08-2020· Leaching of copper(I) sulphide by sulphuric acid solution. The optimum conditions for copper leaching from the middling were identified as sulfuric acid concentration at 103.74 g/L, nitric acid concentration at 12.50 g/L and leaching time of 30.98 min
Ussteducn A Study Of Leaching Of Copper Oxide Ore By Sulphuric Acid. 2018-1-13Abstract Hydrogen peroxide was used to reducing leach African copper-cobalt oxide ore.The influences of parameter including reducing agent quantity initial acid concentration liquid-solid ratio leaching temperature and leaching time on leaching process were investigated.The results indicate that the leaching ratios ...
leaching methods. Agents for leaching copper can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the broadest industrial application in hydrometallurgy of copper. The basic copper carbonate minerals, which are easily leached with the solution of sulphuric acid are: azurite, malachite and chrysocolla.