SIM² KU Leuven researchers have developed a new solvometallurgical extraction process to produce copper from sulphidic copper ore minerals (e.g. chalcopyrite), allowing to reduce the eco-footprint of primary copper production. ... Horizon 2020 ERC Advanced Grant SOLCRIMET project as well as the FWO, was published in the journal Green Chemistry ...
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.
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 pyrometallurgy, but the gradual depletion of rich ore deposits and growing environmental concerns over pyrometallurgical processing have made …
With the decrease in high-grade chalcopyrite resources, the copper extraction from low-grade chalcopyrite has attracted more and more attention. However, the kinetic rates of chalcopyrite leaching with traditional oxidants are usually very slow due …
Figure 1 Distribution of world copper usage areas in 2016 [1]. Chalcopyrite is one of the most widely used copper baring minerals in the world and can be found in low-grade ores. The common technique for copper extraction from chalcopyrite ores is the pyrometallurgical extraction route consisting of roasting, melting, copper conversion
Cu extraction of 92% from chalcopyrite achieved in 17 h at atmospheric pressure. A conceptual flowsheet is proposed and the main processing steps are evaluated for the alkaline …
1.2. Chalcopyrite Ore Production The sulfide ore minerals including chalcopyrite (CuFeS 2), sphalerite (ZnS), galena (PbS) provide the major sources of the world's base metals (Cu, Zn, Pb, respectively), whereas pyrite is virtually ubiquitous as a metalliferous mineral in sulfide ore deposits (Crang and Vanghan, 1994).The first step in recovering metal from their …
However, mechanical activation is an important parameter for increasing metal extraction, so that copper extraction increases to 83% from 47% after 30 min of grinding chalcopyrite by a high-energy ...
The blasted ore breaks apart and falls into a series of pre-constructed funnels and access tunnels to form ore extraction drawpoints. From the drawpoints, ore will pass through a series of handling systems to an initial crushing circuit underground before transferring to the above surface Concentrator Complex. Concentrating
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 …
Simultaneous copper extraction and electricity production have been achieved in the MFC-assisted chalcopyrite bioleaching [23], [24], but problems including low leaching efficiency and slow kinetics still needed to be solved.The application of silver-bearing chemicals has been reported to be an effective way to improve the bioleaching efficiency of chalcopyrite.
peroxodisulfate (20 g of low-grade chalcopyrite ore of grade 0.7 % was leached with pH 2 solution containing 10 g/L of peroxodisulfate ion.) .....30 Figure 1.6a: Effect Copper grade on recovery in peroxodisulfate (10 g/L) solution of pH = 2. The batch tests contained 20 g/L each of chalcopyrite of grades 33.1%
In this regard, the present work assessed the bioleaching of two chalcopyrite ores—containing 0.34% Cu (copper ore 1) and 1.79% Cu (copper ore 2) by the extreme thermophilic archaea Sulfolobus ...
As the future copper requirements are much larger than what can be obtained through (even perfect) copper recycling from urban mines, there will be a need for the primary mining of copper. Unfortunately, extraction of copper from sulphidic ores, either by pyrometallurgy or hydrometallurgy, is typically associated with a relatively large eco ...
New method extracts copper from chalcopyrite, cheaper and greener than traditional methods, with wide applications.
Abstract. Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. 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 (FeCl 3 as oxidizing agent and ethylene glycol (EG) as …
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...
One hypothesis is that mechanical activation could be incorporated to help increase the percentage of minerals extracted. After the primary milling, half of the chalcopyrite powder …
A low-grade ore containing ~0.3% Cu, remains unutilized for want of a viable process at Malanjkhand Copper Project (MCP), India in which copper is present as chalcopyrite associated with pyrite in ...
As the future copper requirements are much larger than what can be obtained through (even perfect) copper recycling from urban mines, there will be a need for the primary mining of copper. Unfortunately, extraction of copper …
Chalcopyrite, the most abundant copper-bearing mineral, is known to be recalcitrant to dissolution, and much research has been conducted to solve the difficulties that hinder its viable exploitation (Davenport et al., 1976). In efforts to provide the copper industry with an efficient way to recover copper from chalcopyrite ores, various dissolution
copper in 35 days from the selected ore, showing significant differences with the other consortia, which removed only 35% of copper in 35 days. To validate the assays was done an escalation in col-
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 ...
Since 100 pct extraction would result in 4,500 ppm copper in solution, the percent copper extractions at 95°, 65°, and 35° C were 70.1, 28.7, and 9.4 pct, respectively. The other factors are at the 0 level so the above values correspond to a 16 hour leach, 300 psi, Py/Cp = 1, and 1 g O2/g Cp.
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 ...
Copper may be found in a variety of minerals, including chalcocite, chalcopyrite, bornite, cuprite, malachite, and azurite. It can be found in seaweed ashes, many marine corals, human liver, and many mollusks and arthropods. ... Mining is the initial phase in the extraction process. Copper ore must be extracted using either open-pit or ...
Chalcopyrite and pyrite recoveries, as well as chalcopyrite grade data, as a function of canola oil dosage for a 50:50 chalcopyrite-pyrite mixture [140]. Result of the copper ore flotation ...
Copper is one of the most widespread and common heavy metals, and chalcopyrite is the main ore of copper in the world, contributing more than 70 % of the global copper reserves [2]. The bioleaching process of chalcopyrite is complicated, including a series of chemical and biological reactions that promote the solubilization of chalcopyrite and ...
2.1 Ore The low-grade copper ore contains 0.3% Cu, 0.03% Ni, 0.05% each of Co and Zn, 3.9% Fe, 2.83% S and 0.6% TiO 2 with 91.2% acid insoluble given in Table 1. The XRD study of the ore identified the presence of Chalcopyrite, Feldspar and Quartz, but the EPMA study confirmed the presence of Covellite in addition to Chalcopyrite, Feldspar ...
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 (FeCl 3 as oxidizing agent and …
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Project Title: Evaluation of Integrated Halide-Based Extraction and Recovery of Copper from Chalcopyrite Ore Project PI: Michael Free Institution: University of Utah Related Searches manetic drums seperator energy capacity cost purity
Bacterial consortium for copper extraction from sulphide ore consisting mainly of chalcopyrite
Chalcopyrite is well known as being refractory to conventional leaching approaches at atmospheric pressure. The current study investigated a hybrid approach using aqueous ammonia as a pH modifier...
Stirred tank bioreactor bioleaching at 42 °C by using a defined mixed culture of moderately thermophilic, acidophilic bacteria previously adapted to 10% Sarcheshmeh copper mine ore sample improved copper extraction of up to 76 % which can be related to a better chalcopyrite dissolution at a higher temperature with moderate thermoacidophiles ...
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 …
Chalcopyrite (CuFeS 2), as one of the most abundant and important copper-bearing minerals worldwide, accounting for nearly 70% of known copper reserves (Toro et al., 2020, Wang et al., 2020, Wu et al., 2020).Currently, approximately 80% of world copper production was generated by pyrometallurgical routes, which include flotation, smelting, refining, and …
Chalcopyrite is a critical source of copper, accounting for nearly 70% of global copper reserves. However, its slow dissolution kinetics pose significant challenges for efficient copper …
The current study investigated a hybrid approach using aqueous ammonia as a pH modifier for glycine-based lixiviant systems to leach copper from chalcopyrite while maintaining surface …