In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant...

Sulfide ores such as chalcopyrite ((CuFeS_2)) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest …

Copper can be directly extracted from the chalcopyrite and concentrated ore. Chalcopyrite-associated minerals contain copper (Cu), iron (Fe), zinc (Zn), and Sulphur (S). …

However, Hedrich et al. (2018) increased copper extraction from a chalcopyrite rich ore concentrate up to 97% in STR bioleaching experiments by using a suitable temperature pattern. One of the major hurdles facing bioleaching is the high …

Three of the processes introduced above have made great strides in solving these problems for the extraction of copper from chalcopyrite: ... The support rock itself may be a low-grade copper ore. The ratio of support rock to concentrate is in the range of 5:1 to 10:1 by weight. The heap is inoculated with thermophilic bacteria and a process ...

The mining industry is looking forward for bacterial consortia for economic extraction of copper from low-grade ores. The main objective was to determine an optimal bacterial consortium from several bacterial strains to obtain copper from the leach of chalcopyrite. The major native bacterial species …

The use of ammonia, ammonium sulphate, and ammonium chloride in the extraction of copper from chalcopyrite ores has gained enormous attention to acidic media as a result of solving the setbacks of acid consumption, low cost, and ease of regeneration . The influences of important parameters such as lixiviant concentration, reaction temperature ...

chalcopyrite 34.6 bornite 63.3 enargite 48.4 tetrahedrite 34.8 Oxide ores cuprite 88.8 tenorite 79.9 malachite 57.5 azurite ... The extraction of copper from ore is normally carried out in three major steps. The first step, mineral processing, is to liberate the copper minerals and remove waste constituents—such as alumina, limestone, pyrite ...

Various reported works on the dissolution kinetics and solvent extraction of copper from chalcopyrite ores are discussed thus. It is important to note that limited data in this area of research from Nigeria origin has been documented (Olubambi et al. 2006). These authors did not address some kinetic parameters such as activation energy (Ea ...

Leaching was independent of stirring rate above 200 rpm. Copper extraction using −45 μm chalcopyrite reached about 94% in 1 h for the standard conditions. The reaction exhibited inverse dependence on hmimHSO 4 concentration, 2nd-order dependence on H 2 O 2 concentration in the range 10–25% H 2 O 2, and 1st-order dependence on initial ...

The persisting trend of decreasing grades of copper and copper-gold ores, the occurrence of finely disseminated chalcopyrite in gold-bearing pyrite and the presence of deleterious contaminants, limits the extent to which conventional milling and flotation processes can be used economically to produce clean flotation concentrates that are acceptable for …

DOI: 10.1039/c9gc02983d Corpus ID: 210154020; Solvometallurgical process for extraction of copper from chalcopyrite and other sulfidic ore minerals @article{Li2020SolvometallurgicalPF, title={Solvometallurgical process for extraction of copper from chalcopyrite and other sulfidic ore minerals}, author={Xiaohua Li and Wouter Monnens …

Extracting copper from its ores is a vital industrial process, given copper's widespread use in electronics, construction, and many other industries. One of the primary copper ores is Chalcopyrite, a mineral with a high copper content. When extracting copper from Chalcopyrite, the first step is to determine the amount of copper present in the ore.

is essential for leaching; a copper extraction of 95.4% was achieved with oxygen injection, while only 33.4% copper extraction was obtained without introducing oxygen. A kinetic analysis indicates ...

A detailed review of chalcopyrite deposits, production and consumption, mining, ore processing, steps involved in the pyrometallurgical and hydrometallurgical processing of copper as well as the dissolution kinetics and …

A conceptual flowsheet is proposed, where chalcopyrite concentrate can be extracted by a leaching–grinding process and copper can be recovered by a solvent extraction–electrowinning circuit.

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The present investigation explored the dissolution of copper and iron from chalcopyrite ore in a chloride medium using Cl 2 gas. The effect of various leaching parameters, such as leaching temperature, the flow rate of Cl 2 gas, and the solid-to-liquid ratio, was critically observed during experiments. The dissolution kinetics of copper and iron have been studied …

Chalcopyrite (CuFeS 2) is economically the most important Cu-sulfide mineral in the world, and unlike many other sulfide minerals, it is known to be recalcitrant in hydrometallurgical processing (Bobadilla-Fazzini et al., 2014, Zhang et al., 2014).In recent years, due to depleting high-grade copper resources, the processing of chalcopyrite-based primary low-grade ores has …

IMPORTANT ORES OF COPPER Copper pyrite or chalcopyrite (CuFeS 2). Chalocite (Cu 2 S) or copper glance. Malachite green [CuCO 3.Cu(OH) 2]. Azurite blue [2CuCO 3.Cu(OH) 2]. Bornite (3Cu 2 ... Following steps are involved in the extraction of copper. Crashing and Grinding The ore is crushed then ground into powder. CONCENTRATION-Floatation process ...

In this paper, we describe a green solvometallurgical process for the extraction of copper from sulfidic ore minerals, with the emphasis on chalcopyrite. The preferred organic solvent is …

The percentage extraction of copper was determined using the following equation: (5) ε Cu 2 + = C 1 V C 2 m × 100 % where C 1 represents the Cu 2+ concentration in the leaching solution (g/L), V stands for the volume of the leaching solution (L), C 2 signifies the copper grade in the chalcopyrite concentrate (wt%), and m is the mass of ...

This property of microorganisms is being harnessed during the recent years for extraction of metals from their ores, especially from low-grade ores. ... In the present study bioleaching of copper from its low-grade chalcopyrite ore using 26 isolates of acidophilic fungi is reported. Most of these fungal strains belonged to the genera ...

In our experiments, copper extraction from chalcopyrite is closely related to the temperature, the particle size of chalcopyrite, as well as concentrations of ionic liquids and K 2 Cr 2 O 7, ... Leaching of chalcopyrite ore agglomerated with high chloride concentration and high curing periods. Hydrometallurgy, 181 (2018), pp. 215-220.

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 chalcopyrite decreases year by year and its composition becomes more and more complex. The traditional pyrometallurgical extraction process has been unable to make efficient use of such resources, …

Chalcopyrite is of great economic importance since approximately 70% of global copper reserves are present in this mineral [].Traditionally, the main technology for copper extraction from its ores and concentrates was …

Copper can be extracted from various types of ores, most of which belong to the sulfidic ores such as chalcopyrite, bornite, covellite, digenite and chalcocite. Chalcopyrite is the most common …

Froth flotation is the primary method used to concentrate copper sulfide ores, such as chalcopyrite. The process involves several key stages: Mixing: The finely ground ore is mixed with water to create a slurry. ... The froth flotation process is a key method for extracting copper from its ores. It works by exploiting differences in the surface ...

Besides, copper ores are largely gangue (minerals such as pyrite, alumina, limestone, and silica) and only ∼0.6% copper such that mining products must be crushed, ground, and floated to concentrate the chalcopyrite and other sulfide fraction (containing 25–35 wt% Cu). ... Another approach is to simply accept the slow copper extraction rates ...

Hydrometallurgical techniques are in industrial operation to extract copper from oxide and secondary sulfide ores, but the treatment of chalcopyrite remains challenging. Chalcopyrite is the most refractory copper mineral. Harsh conditions (highly acidic solutions, high pressure and temperature, or thermal and chemical pretreatments) are required.

Although the values of the electrochemical potential of the tests are very similar, there is a significant difference in the extraction of copper (Figure 2) by different consortia, this contrasts with results reported by Hiroyoshi et al., who notes that the reaction of leaching of chalcopyrite is known to be very sensitive to the redox ...

Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Chalcopyrite (also known as copper pyrites) and similar sulphide …

[18] MUIR D M, LA BROOY S R, CAO C. Recovery of gold from copper-bearing ores [C]//Proceedings of the World Gold ’89, Littleton, Colorado, USA: SME, 1989: 363âˆ'374. [19] MENDES F D, MARTINS A H. Sulfuric acid leaching of lgarape Bahia gold-copper ore for copper extraction-An ore pretreatment for gold recovery by cyanidation [J].

Chalcopyrite, the major mineral source of copper, is commonly treated pyrometallurgically, using froth flotation, smelting, converting and electrorefining processes.The ore treatment however is limited to the cut-off grade concentration below which the extraction is not economically viable. In this study a comparison of feasibility of the pyrometallurgical and …

The extraction and purification of copper by dithizone in kerosene from an aqueous chloride chalcopyrite leach liquor containing 934.44 mg/L Cu, 2326.73 mg/L Fe, 92.14 mg/L Mn, 0.65 mg/L Mg, 0.22 ...

Feasibility for bacterial leaching of two different copper ores from Pakistan was investigated with locally isolated, acidophilic thiobacilli in shake flask culture at 28±2°C. After a lag period of 16 d,Thiobacillus thiooxidans solubilized up to 19% of copper present in chalcopyrite ore in 14 d before entering stationary phase.

Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. The extraction process involves the following steps: (i) Condensation of ore: Only 2≈3% Copper (Cu) is present in copper pyrites (CuFeS 2). After concentrating it by oil-froth floatation process, the amount of Cu will be ...