Effect of Roasting Temperature on the Leaching of Chalcopyrite Concentrate in Sulphuric Acid

Atesoglu, Güldane; Atilgan, İsmail

doi:10.1007/s42461-022-00669-y

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Chalcopyrite ore enriched by flotation in a pilot-sized ore preparation plant in the Hanönü district of the Kastamonu province of Turkey was used in this investigation as a metal source. The chemical compositions of the concentrated chalcopyrite were measured using wave-length dispersive X-ray fluorescence (XRF), and the results are given in Table 1 [ 25 ]. The extraction process involved the use of hydrochloric acid (HCl, 37% w / w ), nitric acid (HNO 3 , 68% w / w ) and sulfuric (H 2 SO 4 , 95–98% w / w ).…”

Section: Methodsmentioning

confidence: 99%

Sustainable Cauliflower-Patterned CuFe2O4 Electrode Production from Chalcopyrite for Supercapacitor Applications

2023

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The primary purpose of this study was to produce an ore-based high-capacity supercapacitor electrode. For this, chalcopyrite ore was first leached with nitric acid, and then metal oxide synthesis was carried out immediately on nickel foam using a hydrothermal technique from the solution. Cauliflower-patterned CuFe2O4 with a wall thickness of about 23 nm was synthesized on the Ni foam surface, characterized by XRD, FTIR, XPS, SEM, and TEM investigations. The produced electrode also displayed a feature of a battery-like charge storage mechanism with a specific capacity of 525 mF cm−2 at 2 mA cm−2 current density, energy of 8.9 mWh cm−2, and a power density of 233 mW cm−2. Additionally, even after 1350 cycles, this electrode still performed at 109% of its original capacity. The performance of this finding is 255% higher than that of the CuFe2O4 in our earlier investigation; despite being pure, it performs far better than some of its equivalents in the literature. Obtaining such performance from an electrode made from ore indicates that the use of ore has a lot of potential for supercapacitor production and property improvement.

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Section: Methodsmentioning

confidence: 99%

Sustainable Cauliflower-Patterned CuFe2O4 Electrode Production from Chalcopyrite for Supercapacitor Applications

2023

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“…The leaching agent used in the experiment is the sulfuric acid solution; its mass concentration is 30 g/L, and the chemical reaction between sulfuric acid and copper-bearing minerals in the ore is used to convert copper from solid phase to liquid phase into the solution. Studies by relevant scholars have shown that the use of dilute sulfuric acid as a leaching agent had a good leaching effect on most copper-combined minerals. − According to the previous experimental results, , the surfactant sodium dodecyl sulfate was selected as the leaching aid, and the surfactant concentrations were 0 and 0.008 mol/L, respectively.…”

Section: Methodsmentioning

confidence: 99%

Experimental Study on the Influence of Surfactants on Ore Surface Wettability

Ai,

Wang,

Liu

et al. 2023

ACS Omega

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To reveal the evolution law of ore surface wettability under the condition of adding surfactant and chemical reaction, the test experiments of ore surface morphology, roughness, and chemical element distribution were carried out. The results show that the contour of the ore surface morphology was relatively flat in the early stage of leaching and the roughness factor increased slowly, while the contour fluctuated significantly in the late stage of leaching and the roughness factor increased sharply. With the leaching reaction, the roughness factor and spreading coefficient of the ore with a 0.008 mol/L surfactant (sodium dodecyl sulfate) concentration were always higher than those without surfactant and the surfactant enhanced the erosion effect of the solution on the ore surface. During the leaching process, the chemical elements Cu, Al, and K were dissolved on the ore surface, and the content of Cu decreased significantly from 2.01 to 0.86%; the leaching rate of copper was about 57.2%. According to the morphology characteristics of the ore surface during leaching and the distribution law of chemical elements on the ore surface before and after leaching, the leaching process was divided into four stages of "contact−penetration−reaction−disintegration". The surfactant had the most obvious effect on the ore surface morphology in the two stages of "reaction" and "disintegration".

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