A new concept for copper (Cu) metal leaching by the simultaneous use of cupric ions (Cu2+) and oxygen (O2) was proposed to improve Cu metal leaching in sulfuric acid. According to this concept, …

If 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 …

The relationship between copper leaching from malachite ores by using sulphuric acid as the lixiviant and the morphology of malachite particles associated with the gangue minerals has been studied ...

Chalcopyrite is the main mineral source of copper ore for extracting and producing copper. However, with the continuous mining of copper ore, the grade of …

In this study, weak acid in the curing and leaching stages of copper ore was incorporated, and we analyzed its effect on the dissolution of copper and final impurities. The weak acid corresponds to a wastewater effluent from sulfuric acid plants produced in the gas treatment of copper smelting processes. This effluent is basically water with high acidity …

in a total estimate of 60 million tons of copper ore reserves, with an average grade of 1.63 % [17]. There are many studies published in the literature on the leaching of non-Jordanian copper ores using various lixiviant. For example, Madsen et al. [19], developed a shrinking core model to describe the leaching of copper from sulfide ores

Copper can be easily leached from cuprite by using sulphuric acid. The RTB Bor copper smelter generates 8.7 m3h-1 of extremely acidic waste effluent (142.4 kgm-3 of sulphuric acid, pH -0.464) with ...

The 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 …

Herein, the room-temperature sulfuric acid leaching of copper smelter slag powder in the presence of potassium dichromate was investigated, resulting in the selective extraction of copper with its ...

Harichandan and Mandre 13 used sulfuric acid with concentrations of 1 M and 3 M for the leaching of a mixed oxide-sulfide copper ore containing 67.19% SiO 2 …

DOI: 10.1016/j.seppur.2024.128631 Corpus ID: 271021791; Copper leaching from complex chalcopyrite-rich ores: Utilizing mechanical activation and wastewater-based sulfuric acid system

The percolation leaching process results, including the calculation of sulfuric acid consumption per ton of ore, the consumption ratio of sulfuric acid and extracted copper, and the final copper …

There 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 …

sulfuric acid leaching, where 50 mL of a 2% solution of sulfuric acid was fed to the surface of the heap with the same frequency. The ambient temperature during leaching was +19 C.

Meanwhile, the use of sulfuric acid as a lixiviant for leaching of copper ore has been reported in many studies due to its relatively low cost, and good leaching/solving ability at room ...

The 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. This flowsheet would also be suitable for a larger tonnage by proper sizing of the various units of equipment.

The leaching of dolomitic-copper ore using sulphuric acid under controlled conditions was studied with a view to evaluating the economic value and the effect of ore pulverisation, particle size, temperature and pH on the recovery of copper from chalcopyrite. ... 8.14 % total copper and 22 % solids. The leaching was carried in duration of 0-6 ...

For instance, Liu et al. found that the leaching kinetics of a low-grade complex copper ore in ammonia-ammonium chloride solution followed the diffusion process with the activation energy of 23.279 kJ/mol. Seo et al. reported that the leaching kinetics of a Cu-Co ore in the sulfuric acid and hydrogen peroxide system followed the …

The resulting "pregnant" leach solution of sulfuric acid and copper sulfate is collected in a small pool. The copper compound can now be seen at concentrations of between 60-70%. The second step is solvent extraction, in which two immiscible (un-mixing) liquids are stirred and allowed to separate, causing the cooper to move from one liquid ...

In this study, weak acid in the curing and leaching stages of copper ore was incorporated, and we analyzed its effect on the dissolution of copper and final impurities.

Copper sulphate can be used to separate Copper from Nickel in a sulphide ore or Copper from Fe in Cu -Fe sulphide ore. CuSO 4 solution can also be used for removing Pb, Zn, and Fe from copper sulphide ores. In presence of oxidizing agents: Ferric ion: Ferric sulphate or chloride react with metal sulphides liberating elemental sulphur, e.g.

DOI: 10.1016/J.JTICE.2021.04.005 Corpus ID: 235575013; Leaching kinetics and predictive models for elements extraction from copper oxide ore in sulphuric acid @article{Apua2021LeachingKA, title={Leaching kinetics and predictive models for elements extraction from copper oxide ore in sulphuric acid}, author={M. Clotilde Apua …

Substantial previous work targets copper-gold ores, but the present study focuses on a copper-silver ore, which will be leached following acidic pretreatment (sulfuric acid at pH 1) to assess the ...

of 23.279 kJ/mol. Seo et al. [28] reported that the leaching kinetics of a Cu-Co ore in the sulfuric acid and hydrogen peroxide system followed the shrinking core model, of which the controlling factor is the diffusion of the reac-tants through a product layer. Wang et al. [29] applied the sulfuric acid leaching process to recover the copper

The model equation derived using Minitab 17.0 predicts that copper-leaching efficiency can reach 97.0% at optimal values of 0.84 M sulfuric acid, L/S ratio of 100:1, and a leaching time of 80 min ...

The dominating copper phases in the slag are Cu, Cu 2 O and CuFeO 2 (XRD and SEM-EDS). Leaching copper from these phases using sulfuric acid has a …

Sulfuric acid concentrations of 2–8 M resulted in initial and final copper recoveries of 15% and 22%, respectively. Nitric acid, in concentrations from 0.01 to 14 …

Heap leaching & SX-EW is a method of extracting pure copper from oxide ore by placing the crushed ore on a pad in a heap and spraying the leaching solution, sulphuric acid, over the heap. The acid trickles through the heap and dissolves the copper mineral into solution. The leach solution collects at the bottom of the pad in a collection pond.

parallel reactivity of dolomitic-copper with sulphuric acid was not demonstrated [14]. A comparison of the effect of low and high dolomite on leaching of copper was not found in literature. Fig. (1). The shrinking core model for the leaching of dolomitic-copper ore. The ions from the acid migrate by diffusion from bulk

The results show that copper leaching rate of 92.02% were achieved under the optimized conditions as follows: raw ore crushed to passing 1mm, leaching by sulfuric acid …