One of the major primary sources of copper is chalcopyrite (CuFeS 2). Copper can be directly extracted from the chalcopyrite and concentrated ore. Chalcopyrite-associated minerals contain copper (Cu), iron (Fe), zinc (Zn), and Sulphur (S). Chalcopyrite is one of the most stable minerals among sulfide ores due to its …
Extracting copper from its ores. The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ((CuFeS_2)) are converted to copper by a different method from silicate, carbonate or sulfate ores.
Using the operating cost data and the current copper selling price, the ore cut-off grade as a function of copper extraction efficiency was identified. The economic analysis showed that for an ore containing 0.28% copper, 7000 tons per year of copper cathode production requires a total investment of 38 million US dollar.
Regarding this, the bacterial consortium that achieved the greater extraction of copper from sulphulretted ore (Figure 2), was the one that consisted of consortia At. ferrooxidans with At. thiooxidans, making a 70% extraction of copper in the final test. The consortium presented a statistically significant difference from the rest of the tests.
(9), for a chalcopyrite ore with 0.28% Cu and copper extraction of 30%, the direct operating cost for the heap/SX/EW operation is US$2.82/kg Cu. To this value the finance cost of the project (interest and capital recovery), which in this study, was chosen as 20% of the fixed capital investment per annual production of copper cathode, must …
SIM² KU Leuven researchers have developed a new solvometallurgical extraction process to produce copper from sulphidic copper ore minerals such as chalcopyrite (see featured image). The innovation comprises a closed-loop process, using Ethylene glycol-FeCl3 as lixiviant.
Copper and iron extraction yields were obtained as 75% and 80%, respectively under leaching conditions as follows: APS concentration 250 g/L; NaCl concentration 150 g/L; …
The extraction of copper and iron increases linearly as the leaching temperature increases from 20 to 60 °C. Copper extraction was 80% after 2 h at 60 °C with the addition of the oxidant ferric sulfate at a concentration of 5 g/L Fe 3+ ions. The highest degree of copper leaching was observed at a stock consistency of 33%.
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 ...
A vision is proposed in which an electrolytic technique, integrated with low cost and sustainable power, enables the production of unprecedented annual tonnages …
Solvometallurgical process for extraction of copper from chalcopyrite and other sulfidic ore minerals ... four leachates obtained from leaching of chalcopyrite with different initial FeCl3 concentration (0.25-1.0 mol L-1) in the leaching agent. The UV samples were obtained by 5000 times dilution ... EDS spectrum of copper deposits at -0.30 V vs ...
In order to comprehend the optical characteristics of chalcopyrite, a major copper ore, it is crucial to conduct an analysis on account of its sulfur composition. Sulfide ores are composed of semiconductor minerals, each characterized by unique chemical and mineralogical properties, each exhibiting distinct chemical and mineralogical ...
Sulfate-chloride based lixiviant along with normal aeration could significantly improve copper extraction from the low-grade chalcopyrite ore to more than …
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 …
A series of leaching tests were carried out to investigate the effect of the solid/liquid ratio, stirring speed, temperature, oxidant and acid concentrations, and …
Copper is a metal that is widely used in different applications mainly due to its thermal and electrical conductivities, together with its corrosion resistance, particularly when it is alloyed. This chapter intends to be a summary of the copper metallurgy: from the historical aspects and mineral deposits or statistics to the different technologies used to …
Bio-leaching of copper (0.3%) from a low grade Indian chalcopyrite ore of Malanjkhand copper mines, using a native mesophilic isolate predominantly Acidithiobacillus ferrooxidans (A.ferrooxidans), is reported. A bio-recovery of 72% Cu was recorded in the presence of this culture (not adapted), which increased to 75% with an …
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 ...
In this study, SDS is used to enhance the sulfuric acid leaching of chalcopyrite in aqueous and isopropanol media. The presence of SDS increased copper extraction into the solution in both solvents. However, it was the "isopropanol–sulfuric acid–SDS" system that proved to be particularly effective for copper recovery from …
Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …
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 ...
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 …
For the chalcopyrite copper extraction project, the combined flow sheet of jig gravity separation and floatation separation has beed adopted to get final copper concentrate of +45% TCu. There is ...
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 …
extraction of major constituents such as copper and iron in chalcopyrite concentrate. Copper and iron dissolution yields from original concentrate could be obtained as about 20% and 22% respectively under the conditions of 0.25 kg/L of APS concentration, 333 K of leaching temperature, 240 min of leaching time, 0.25 mol/L of H2SO4
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 ...
Processing low-grade chalcopyrite ore (<0.3% Cu) is the main challenge of copper complexes. ... Hence, bio heap leaching processes of low-grade copper sulfides as a strong alternative have been developed for the extraction of copper from chalcopyrite by utilizing a number of operations (Panda et al., 2013, Bobadilla-Fazzini et al., 2017).
Chalcopyrite is the copper ore deposit of Falum, Sweden of Namagaland in South Africa. However, vast crystals or ... World Trend in (SX -solvent extraction) capacities from 1985 – 2005 (Rotuska and Chimjeleniki, 2008) 1.2.1.Flotation Separation .
In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but challenging for the …
traction from natural mineral resources is very important, both environmentally and economically. The main objectives of this research work are to examine possible ways …
