Chalcopyrite is the richest copper sulfide mineral in the world, but it is also the most resistant to biohydrometallurgical processing. To promote the bioleaching of chalcopyrite, a nonionic surfactant, t-octyl phenoxy polyethoxy ethanol (Triton X-100), was employed in this paper. Action of Triton X-100 in chalcopyrite leaching using Acidithiobacillus ferrooxidans was explored in shake flasks.

A rod matrix was designed and used in the SLon-500 pulsating HGMS separator using Matrix Design Theory and Method as illustrated in Fig. 1, to improve the capture and separation selectivity for chalcopyrite particles from the fine copper-molybdenum concentrate flow. Download : Download high-res image (230KB) Download : Download full-size image ...

@article{Duran2019ApplicationsOT, title={Applications of trace element chemistry of pyrite and chalcopyrite in glacial sediments to mineral exploration targeting: Example from the Churchill Province, northern Quebec, Canada}, author={Charley J. Duran and Hugo Dub{'e}-Loubert and Philippe Pag{'e} and S-J. Barnes and Martin Roy and Dany Savard ...

2021 Theses Doctoral. Exploring the Reductive Pathway for the Hydrometallurgical Production of Copper from Chalcopyrite. Vardner, Jonathan Thomas. The high demand for copper is coinciding with a sharp decline in the grade of copper reserves, and as a result, copper scarcities are expected to arise in the coming decades.

Chalcopyrite from 13 worldwide representative Ni-Cu sulfide and Reef-type PGE deposits were investigated using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to evaluate its potential as an indicator mineral for exploration. Trace element data were investigated with PLS-DA (partial least square-discriminant analysis) which, combined with discriminant binary diagrams ...

entrain impurities such as arsenic and antimony, thus providing a method of control of those elements. An initial investigation into the possible control and elimination of ... 6.7 Reduction of chalcopyrite with silver and silver sulphide additions 146 6.7.1 X-ray Analysis 146 6.7.2 Electron Microscopy of Chalcopyrite Reduced with Ag2S 149

Compared to chemosynthetic CuFeS₂, natural chalcopyrite (CuFeS₂) can be regarded as a promising anode material for exploring ultrafast and stable Li-ion batteries benefiting from it being firsthand, eco-friendly, and resource-rich. Considering the nonuniform size distribution i …

9 Mining Methods - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. ... This is commonly used to separate chalcopyrite from quartz before the refining processes of extracting copper. 2. ... In a newly acquired mineral project for exploration, ...

The resistivity of the chalcopyrite samples varies between 0.6 to 2 ohm-m and provides sufficient resistivity contrast with surrounding volcanic rock units for target detection. The results of dipole-dipole IP profiling with a 50-m dipole length conducted along two profiles are presented in the form of apparent resistivity and phase pseudosections.

Nanocrystalline CuAlS2 chalcopyrite has been mechanosynthesized at room temperature for the first time by ball milling the stoichiometric mixture of elemental of Cu, Al, and S powders under argon atmosphere. Initially, the CuAlS2 phase is formed by solid state reaction of elemental powders within 15 min of milling and in the course of milling crystallite size decreases slowly to ~5 nm within ...

The most obvious physical properties of chalcopyrite are its brassy yellow color, metallic luster, and high specific gravity. These give it a similar appearance to pyrite and gold. Distinguishing these minerals is easy. Gold is soft, has a yellow streak and has a much higher specific gravity. Chalcopyrite is brittle and has a greenish gray streak.

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Currently, the discriminatory models are constructed by such methods to study the chemical composition of minerals such as magnetite [4,11], scheelite [12], tourmaline [13], and chalcopyrite [8 ...

The main steps involved in the copper extraction method are as follows: Reduction of copper in chalcopyrite to copper sulfide. Addition of calcium carbonate as a flux just like in blast furnaces, in order to create the slag. Removal of iron from chalcopyrite as iron silicate slag. Most of the sulphur present in chalcopyrite converts to sulphur ...

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 organic solvent).

The method of obtaining chalcopyrite cuinse 2 cu in ga Properties of Ores and Other Minerals of Economic Importance. The technical problem is solved in that a method of obtaining chalcopyrite CuInSe 2 CuGaSe 2 and Cu In Ga Se 2 thin films is carried out in a two stage process the first stage of which the original substrate by various methods vacuum Napili which has been created for the ...

Variation of trace elements in chalcopyrite from worldwide Ni-Cu sulfide deposits: implications for mineral exploration ... Methods The samples (65) are from 12 representative Ni-Cu sulfide deposits, belonging to 6 deposit types ... Application to mineral exploration. Ore Geology Reviews 78, 388-408. Mansur, E.T., Barnes, S.-J., Duran, C.J. and ...

The induced polarization method is a geophysical exploration method that uses the differences in conductivity and induced polarization characteristics of rock and ore to observe and study the change law of artificially formed induced polarization fields to carry out prospecting and solve other geological problems. ... Chalcopyrite, galena, and ...

An activated chalcopyrite product prepared by a method comprising contacting a surface of a chalcopyrite-containing particle with a cupric solution having a pH greater than about 1.8, under (a) reducing conditions, (b) temperature and (c) time, all of which are sufficient to convert at least a portion of chalcopyrite present at the surface to ...

The invention concerns a method which consists in depositing on a substrate a solution containing metal mineral salts constituting chalcopyrite and an organic binder; then drying to obtain a solid film on the substrate; and finally contacting the film with an atmosphere containing one or more elements of group 16 of the periodic table and forming chalcopyrite by thermal reaction.

In this paper, we compare and contrast the results of field experiments with the dipole‐dipole‐induced polarization (IP) and controlled‐source audio‐magnetotellurics (CSAMT) methods, along the same survey profiles, at a test area that was subject to extensive drilling and detailed geological investigation. The ore bodies are interbedded between two series of dacitic tuff. The depth and ...

The XPS spectra (Thermo Fisher-VG Scientific, USA) for EAPhTXPA, chalcopyrite before and after EAPhTXPA treatment were measured. 2 g of chalcopyrite samples and 50 mL distilled water with or without 5 × 10 −4 mol·L −1 EAPhTXPA were added into a conical flask of 150 mL. After reacting at 25 °C for 4 h in a thermostatic oscillator, the ...

The effect of the temperature used in roasting chalcopyrite with lime was determined first. A range of 600° to 900° C was selected for testing after it was found that below 600° C, CaSO3 was formed, while above 900° C, CaSO4 decomposed to CaO plus SO3. This is in agreement with the findings of other investigators.

These results enrich the diversity of CL compounds, and highlight the combination of calculation and experiment for the exploration of new IR NLO materials with excellent optical properties. 4 Experimental Section Structural Design and Prediction. The structure predictions were performed by the USPEX structure prediction method.

Request PDF | On Jan 1, 2011, D.W. Dew and others published High temperature heap leaching of chalcopyrite: Method of evaluation and process model validation | Find, read and cite all the research ...

For the new PAS method, the sintering temperature significantly influenced the physical and chemical properties of the synthesized pyrites and chalcopyrites. At the optimized conditions (600 °C for pyrite, 400–600 °C for chalcopyrite), the PAS-synthesized sulfides have a smooth surface and dense structure that are suitable for laser ...