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Готові списки джерел за темами / Copper sulfide ore / Статті в журналах

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Статті в журналах з теми "Copper sulfide ore"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

BERNARDEZ, L. A., L. R. P. DE ANDRADE LIMA, and L. E. L. DE OLIVEIRA. "BIOLEACHING OF COPPER FROM CARAIBA MINE ORE (BRAZIL)." Latin American Applied Research - An international journal 49, no. 1 (2019): 25–29. http://dx.doi.org/10.52292/j.laar.2019.281.

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Анотація:

The bioleaching of copper ore from the Caraiba Mine was assessed. A microorganism, Acidiothiobacillus ferrooxidans, was isolated from samples collected directly in acid mining drainage in a gold mine tailings pound and used in the bioleaching of the copper sulfide ore. This ore is composed mainly of 28% of oxidized species, 43% of secondary sulfides and 24% of primary sulfide. The shaking flasks experiments with the Caraiba ore showed copper chemical leaching of about 37% and copper bioleaching of about 60% within 60 days at low temperature and native microorganism.

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2

Liu, Dian Wen, Jian Jun Fang, Xiao Lin Zhang, et al. "Sulfidisation Promotion Effect of Ammonium Sulfate on Flotation of Copper Oxide Ore." Advanced Materials Research 524-527 (May 2012): 1109–14. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1109.

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Анотація:

This paper presents the sulfidisation promotion effect of ammonium sulfate on the sulfidisation flotation of both malachite and copper oxide ores. Copper oxide ores are commonly difficult-to-float due to its molecular structure, and adding sodium sulfide as activator is necessary; however, its dosage to the flotation pulp must be strictly controlled, as it is also a powerful depressant for copper sulfide minerals, and will, if in excess, depress the activated copper oxide minerals. This depression will be alleviated while ammonium sulfate is added, as it accelerates the speed of sulfidisation,

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3

Ran, Jin Cheng, Quan Jun Liu, and Zhi Guo Zhang. "Separation Test of Oxide Copper Ore in Yunnan." Applied Mechanics and Materials 470 (December 2013): 80–83. http://dx.doi.org/10.4028/www.scientific.net/amm.470.80.

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Анотація:

A task of a refractory oxide copper ore in Yunnan has been studied, the grade of copper is 2.76% in crude ore. This ore has high oxidation and deep combination, the oxidation ratio is 42.32% and the combination ratio is 33.01%, so it is difficult oxide copper. Because the sulfide copper in crude ore containing 21.27%, so by experimental research, we decided to adopt the process of floating copper sulfides, and then sulfide oxide copper. In the flotation of oxidized copper minerals, we take the process of desliming, the copper minerals have recycled efficiently, while making a small precious me

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4

Ran, Jin Cheng, Quan Jun Liu, and Zhi Guo Zhang. "Experiment Research of a Certain Cu-Pb-Zn Poly-Metallic Sulfide Ore in Yunnan." Applied Mechanics and Materials 556-562 (May 2014): 197–200. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.197.

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Анотація:

By comparing a variety of programs, for the feature of a certain Cu-Pb-Zn poly-metallic sulfide ore in Yunnan, using the processes of copper and lead priority floating, combined depressants of sodium silicate + sodium sulfite + carboxymethylcellulose in copper flotation, the tailings of bulk flotation for copper and lead after activated flotation of zinc mineral by copper sulfate, the successful implementation of effective separation of copper and lead and gained a better indicator of dressing.

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5

Bobadilla-Fazzini, Roberto A., Patricia Piña, Veronica Gautier, Karen Brunel, and Pilar Parada. "Microbial & Mineralogical Dynamics during Copper Sulfides Bioleaching, the Search for the Missing Link." Advanced Materials Research 1130 (November 2015): 131–35. http://dx.doi.org/10.4028/www.scientific.net/amr.1130.131.

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Bioleaching involves a chemical-microbial-driven dynamic process of oxidation and dissolution, as well as precipitation and formation of surface secondary phases that change the copper sulfide exposure/occlusion profiles. This dynamic process determines the kinetics of copper sulfides bioleaching. Former studies have shown the microbiological dynamics of the leaching solutions, and most mineralogical studies have been done with pure copper sulfide species under controlled conditions. In this work we aim to unravel the link between the microbiology and the mineralogy during the bioleaching of a

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6

Ryaboy, V. I., and E. D. Shepeta. "Collector for Copper-Arsenic Ore Flotation." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 5, no. 4 (2021): 297–306. http://dx.doi.org/10.17073/2500-0632-2020-4-297-306.

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Copper and scheelite concentrates are produced from scheelite-sulfide ores of the Vostok-2 deposit at the Primorsky processing plant. Chalcopyrite, gold, silver, and harmful impurities (arsenopyrite, pyrrhotite) are extracted into the copper concentrate. As a collector, dialkyldithiophosphate-type IMA-I413p reagent is used. Bulk sulfide concentrate is produced using activated carbon and trisodium phosphate; copper cleaner flotation is carried out in the medium of ferrous sulfate. The commercial copper concentrate contains 16 % copper, 33 g/t gold, and 280 g/t silver. The recovery of the metals

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7

Ryaboy, V. I., and E. D. Shepeta. "Collector for Copper-Arsenic Ore Flotation." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 5, no. 4 (2021): 297–306. http://dx.doi.org/10.17073/2500-0632-2020-4-297-306.

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Анотація:

Copper and scheelite concentrates are produced from scheelite-sulfide ores of the Vostok-2 deposit at the Primorsky processing plant. Chalcopyrite, gold, silver, and harmful impurities (arsenopyrite, pyrrhotite) are extracted into the copper concentrate. As a collector, dialkyldithiophosphate-type IMA-I413p reagent is used. Bulk sulfide concentrate is produced using activated carbon and trisodium phosphate; copper cleaner flotation is carried out in the medium of ferrous sulfate. The commercial copper concentrate contains 16 % copper, 33 g/t gold, and 280 g/t silver. The recovery of the metals

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8

Zepeda, Víctor J., Ivan Nancucheo, Milton Guillen, et al. "Biological Production of Copper Sulfide Concentrate from Flotation Tailings and Low Grade Ore." Solid State Phenomena 262 (August 2017): 202–6. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.202.

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Анотація:

Flotation tailings are hazardous due to physical and chemical instability and are currently considered one of the main pollution concerns of mining industry. Most of these tailings are fine-grained residues with low copper content (0.1-0.8%) and include toxic compounds, such as heavy metals, arsenic, and flotation reagents, among others. Another hazard is the generation of acid mine drainage (AMD) due to biological oxidation of tailings. On the other hand, low-grade ore is challenging the mining industry to commercially produce copper.The main objective of this work was to assess the use of fl

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9

Fu, Yan Xiong, Bao Liang Ge, Qing Li, and Jing Lu Zhang. "Process Mineralogy Study on a Sandstone Copper Ore." Advanced Materials Research 881-883 (January 2014): 1603–6. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1603.

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Анотація:

In this thesis the object of study is a low grade sandstone copper with complex composition. Through the process mineralogy research on a sandstone copper ore,the result showed that the primary sulfide copper minerals are tetrahedrite and chalcopyrite; secondary sulfide copper minerals are bornite, chalcocite and azurite; the main oxide copper mineral is malachite; the main gangue mineral is quartz. The grade of copper is 0.77% and the oxidation rate is 45.45% in the run of mine, it is an oxide copper ore with not thoroughly oxidation. There is a part of disseminated particle size of copper mi

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10

Liu, Mei Hua, Yi Qiang Liang, Sheng Jian, and Xu Dong Zhang. "Flotation of a Copper-Lead Sulfide-Oxide Ore：Using a Combined Depressant for Galena and an Effective Activator D2 for Copper Oxide Minerals." Advanced Materials Research 634-638 (January 2013): 3368–74. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3368.

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The properties of a Cu-Pb oxide ore are investigated by XRD and SEM. Results show that the ore is characterized by chalcocite, galena, azurite and cerusite. Copper and lead phases analysis show that the oxidation rates of copper and lead are up to 70% and 72%, respectively. In order to get a good flotation performance for the difficult-to-treat ore, an efficient flotation technology of bulk flotation of Cu-Pb sulfides，separation of Cu-Pb sulfides, copper and lead oxides flotation has been developed. By applying the combined depressants (sodium thiosulfate + peroxide), activator Disulhydroxyben

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11

Mukhtar, Ahmed Baloch* Nizam Baloch Tariq Mahmood Bhatti Mohammad Faheem Farida Behlil Irshad Ali. "BIOLEACHING OF COPPER FROM COPPER SULFIDE MINERALS OF REKO DIQ DEPOSITS IN CHAGAI, BALOCHISTAN." Indo American Journal of Pharmaceutical Sciences 04, no. 10 (2017): 3849–54. https://doi.org/10.5281/zenodo.1027995.

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Анотація:

Chagai, District of Balochistan, Pakistan is rich in minerals and has great diversity of mineral resources such as copper, Gold, Silver, molybdenum etc. Copper sulfide ore sample was obtained from Reko Diq deposit (Chagai District, Balochistan) Diq H- 4 Tanjeel area for experimental leaching studies. Concentration of copper by froth floatation or any other beneficiation technique is costly, very expensive, harmful to environment and not so efficient. Bioleaching concentration used in this study is considered one of the green methods adopting by many countries worldwide. During bioleaching proc

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12

Wu, Ning, Guo Hua Ye, and Xiong Tong. "Recovery of Copper from Sulfide-Oxidized Copper Ore by Flotation." Applied Mechanics and Materials 295-298 (February 2013): 3038–42. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.3038.

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Анотація:

The copper mine is the sulfide-oxidized copper ore. The grade of copper is 0.5%, with the oxidation of 22%. According to the properties of the ore; a systematic study was did for the ore, include collectors, activators and grinding fineness. Under the optimized conditions, copper concentrates grade of Cu 16.56% with a recovery of 85.62% was obtained through the locked cycle flotation of twice roughing, four times cleaning, once scavenging and middling return in order.

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13

Norris, Paul R., Leonides A. Calvo-Bado, Carly F. Brown, and Carol S. Davis-Belmar. "Ore column leaching with thermophiles: I, copper sulfide ore." Hydrometallurgy 127-128 (October 2012): 62–69. http://dx.doi.org/10.1016/j.hydromet.2012.07.003.

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14

Shinkawa, Tatsuya, Taro Kamiya, Kazuhiro Kojima, and Tadashi Chida. "Primary Copper Ore Leaching by Leaching Solution Adjusted Oxidation-Reduction Potential in Column." Advanced Materials Research 1130 (November 2015): 355–58. http://dx.doi.org/10.4028/www.scientific.net/amr.1130.355.

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Анотація:

Copper ore is classified into three groups; primary copper sulfide, copper oxide and secondary copper sulfide. Leaching copper from primary copper sulfide, such as chalcopyrite, with sulfuric acid takes longer time than from copper oxide and secondary copper sulfide. As such, an oxidant is required to extract copper from chalcopyrite. In this study, column leaching tests were carried out using primary copper sulfide ores produced in an iron oxide copper gold (IOCG) deposit and rich in iron in coparison to porphyry copper ores. The columns of 10 cm diameter and 100 cm long had a double tube str

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15

Salinas, Karina, Osvaldo Herreros, and Cynthia Torres. "Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous Media." Minerals 8, no. 8 (2018): 312. http://dx.doi.org/10.3390/min8080312.

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Анотація:

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ore was first cured for 14 days and then leached for 90 days. The highest copper extraction, 50.23%, was achieved at 32.9 °C with the addition of 0.6 kg of H2SO4 per ton of ore, 0.525 kg of NaCl per ton of

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16

Malitch, K. N., I. Yu Badanina, N. G. Soloshenko, and S. F. Sluzhenikin. "Copper and zinc isotopic variations in Ni-Cu-PGE ores of the Noril’sk Province (Russia)." LITHOSPHERE (Russia) 24, no. 2 (2024): 300–325. http://dx.doi.org/10.24930/1681-9004-2024-24-2-300-325.

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Research subject. Mineral assemblages of sulfides from massive and disseminated sulfide nickel-copper-platinum-group element (Ni-Cu-PGE) and low-sulfide PGE ores of the Noril’sk Province, which hosts the richest complex deposits of platinum-group metals, nickel, and copper. Aim. In order to identify sources of ore material and explore new forecasting approaches for Ni-Cu-PGE deposits, we study the Cu- and Zn isotopic compositions of sulfides from economic Kharaelakh and Noril’sk-1 intrusions containing unique and large sulphide Ni-Cu-PGE deposits (Oktyabr’sk and Noril’sk-1, respectively), sube

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17

SERAVINA, Tatyana, Svetlana KUZNETSOVA, and Ludmila FILATOVA. "Compositional peculiarities of the host rocks and ores of the Lazursky ore field, Zmeinogorsk ore region of the Rudny Altai minerogenic zone." Domestic geology, no. 3-4 (September 14, 2021): 36–47. http://dx.doi.org/10.47765/0869-7175-2021-10020.

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Анотація:

The article describes composition of the host rocks and ores of the Lazursky and Maslyansky polymetallic volcanogenic massive sulfide deposits of the Lazursky ore field located within the Zmeinogorsk ore region of the Rudny Altai minerogenic zone. The ore field is composed of various facies of the Devonian (Late Givetian – Frasnian) ore-bearing siliceous-terrigenous basalt-rhyolite formation containing horizons of synvolcanic metasomatites. All rocks of the ore field were subjected to folding and schistosity with zones of tectonic brecciation. Hydrothermal alterations are represented by carbon

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18

Klyushnikov, A. M., R. I. Gulyaeva, S. M. Pikalov, and G. I. Maltsev. "Kinetics and mechanism of oxidizing roasting of sulfide copper-cobalt ore." iPolytech Journal 27, no. 1 (2023): 188–218. http://dx.doi.org/10.21285/1814-3520-2023-1-188-218.

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Анотація:

The aim of the study was to examine the chemistry, kinetics and mechanism of oxidizing roasting of a typical sample of sulfide copper-cobalt ore. The research object was sulfide copper-cobalt ore with the following main minerals: pyrite, pyrrhotite, chalcopyrite, sphalerite, tremolite, silicon dioxide, talc, siderite and calcite. The methodology involved high-temperature X-ray phase analysis (100–900°C), thermogravimetry, differential scanning calorimetry and mass spectrometry of the released gas (30–1100°C, heating rate – 5–20°C·min-1, air flow rate – 30 cm3·min-1). The chemistry, kinetics an

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19

Jiang, Mei Guang, Quan Jun Liu, Hong Xiao, and Jun Long Yang. "Experiment Research on Copper Zinc Mixed Flotation." Advanced Materials Research 634-638 (January 2013): 3346–50. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3346.

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the major elements of the copper sulfide tin ore are Copper, tin and zinc, The grade of copper is 1.22%,as chalcopyrite and copper sulfide tin ore exists in the ore, the grade of tin is 1.19%,With gray tin and tin exists in the stone, the grade of zinc is 1.27%, Zinc is mainly in sphalerite,it is not easy separation Because ore structure is complex, due to the flotability of copper zinc is similar, The first with prior flotation method choose copper zinc mixed concentrate, Use re-election for tin enrichment, The last is copper zinc separation flotation.

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20

Seifelnasr, Ahmed A., Ghorashi Z. Zain, and Abdel-Zaher M. Abouzeid. "Flotation of an Oxidized Copper Sulfide Ore." Journal of Mining World Express 6 (2017): 1. http://dx.doi.org/10.14355/mwe.2017.06.001.

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21

SERAVINA, Tatyana, Vladimir KUZNETSOV, Svetlana KUZNETSOVA, Ludmila FILATOVA, and Elena IVANENKOVA. "Pyrite-polymetallic VMS type mineralization of the Rudny Altai on the example of the Zaitsevskoe ore fi (Zmeinogorsky ore district)." Domestic geology, no. 1 (April 22, 2025): 3–21. https://doi.org/10.47765/0869-7175-2025-10001.

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Анотація:

The features of ore-containing volcanogenic sedimentary rocks and pyrite-polymetallic mineralization of the VMS type within the Zaitsevskoe ore field are considered. The ore-bearing rocks belong to the lower (early cycle of volcanism) ore-bearing formation – basalt-containing rhyolite calcareous-siliceous-terrigenous. Within the Zaitsevskoe ore occurrence, the Zaitsevskaya and Ryazanovskaya ore zones were identified, in which pyrite-polymetallic, pyrite, copper-pyrite and pyrite-copper-zinc mineral types of ores were identified. According to the textural features of the ore: interspersed, vein

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22

Li, Tie, Ming Ma, and Ming Yu Li. "Experimental Research on Copper Sulfide Ore in Liaoning." Advanced Materials Research 347-353 (October 2011): 201–5. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.201.

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Анотація:

After the analysis of ore properties and experiments, a suitable process is determined, and a better index is obtained under this process, which is copper concentrate 20.33 % and the recovery 95.23 %. This process provides technical reference to this kind of copper resourses.

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23

Plechov, P. Yu, N. A. Nekrylov, and J. Blundy. "Comparison of oneand two-stage models of copper-porphyry deposits formation." Moscow University Bulletin. Series 4. Geology, no. 4 (August 28, 2017): 31–38. http://dx.doi.org/10.33623/0579-9406-2017-4-31-38.

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Анотація:

Models of copper-porphyry deposits formation examined from the petrological and geochemical points of view. The principal differences between the models are time and mechanism of sulfide ore precipitation and the composition of ore-bearing fluid. It is shown that copper-rich fluid inclusions contain insufficient amount of sulfur for sulfide ore formation and it have to be independent source of sulfur for copper-porphyry deposits formation.

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24

Umarova, Inoyat, Sokhibjon Matkarimov, Javlon Bekpulatov, Dilmurod Makhmaredjabov, and Sherzod Yuldashev. "Study of the Form of Minerals in Copper Porphyry Ores of “Yoshlik-I” Deposit." E3S Web of Conferences 304 (2021): 02003. http://dx.doi.org/10.1051/e3sconf/202130402003.

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Анотація:

The purpose of these studies is to study the forms of finding copper-porphyry ores of the Yoshlik I deposit compared with the Kalmakyr deposit data and to decide on the choice of a cost-effective ore processing technology. As a result of the studies, it was revealed that ore mineralization is represented by sulfides of various metals and iron oxides. The primary sulfides are pyrite and chalcopyrite. In the «Yoshlik-I» sample, the pyrite content is six times less than in the Kalmakyr sample and is 0.7%. The mass fraction of chalcopyrite in the Kalmakyr and “Yoshlik-I” deposits is 1.1 and 0.8%,

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25

Avdalovic, Jelena, Tatjana Solevic-Knudsen, Biljana Dojcinovic, et al. "Bioleaching of copper, zinc and gold from a polymetallic ore flotation concentrate from the Coka Marin deposit (Serbia)." Journal of the Serbian Chemical Society, no. 00 (2021): 16. http://dx.doi.org/10.2298/jsc210127016a.

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Анотація:

The aim of this study was to investigate the possibility of applying Acidithiobacillus sp. B2 to copper, zinc and gold recovery from a polymetallic ore flotation concentrate. The study was designed in two phases. The first phase was a classic biooxidation process in which the microorganisms oxidize sulfides, leaching copper and zinc while simultaneously concentrating gold in the ore. In the second phase, after elimination of the sulfide substrate, the rate of gold leaching by potassium cyanide was analyzed. The leaching was conducted using the shake flask testing technique during a period of 2

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26

Li, Ming Yu, Rui Chen Ren, Tian Yu Guo, and Tie Li. "Experimental Study on Copper Oxide Ore from Fuxin." Advanced Materials Research 361-363 (October 2011): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.259.

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Анотація:

chemical compositions, mineral compositions, mosaic relationship, particle distribution characteristics are identified by mineralogy research on oxidization copper ore from Fuxin. Flotation conditions and closed-circuit process is carried out, it is adopted that adding sodium sulfide for sulfiding and ammonium sulfate for activating, then adding sodium silicate and sodium hexametaphosphate as combined inhibitation to intensify inhibitating, a combined collector consisiting of hexyl xanthate and butylamine dithiophosphate was used to strengthen the collecting effect. Finally, a copper concentra

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27

M., Ankushev, Zaykov V., Molchanov I., Koryakova L., Panteleyeva S., and Yuminov A. "Metallurgical Slags and Ore Fragments from the Kamenny Ambar Bronze Age Settlement (Southern Urals): a Key to Knowledge of Copper Sources." Teoriya i praktika arkheologicheskikh issledovaniy 33, no. 1 (2021): 34–57. http://dx.doi.org/10.14258/tpai(2021)33(1).-03.

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Анотація:

Abstract: The paper presents the characteristics of metallurgical slags and copper ore fragments from the Kamenny Ambar settlement of the Bronze Age. According to the mineral and chemical compositions we have distinguished two types of the slags: Cr-rich spinel containing olivine slags and sulfide-containing olivine slags. The Cr-rich spinel containing olivine slags are the product of oxidized ore from the copper deposits in ultramafic rocks exploited in the early Sintashta-Petrovka period the settlement functioning. The sulfide-containing olivine slags are the result of the secondary sulfide

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28

Shinkawa, Tatsuya, Tadashi Chida, So Furukawa, and Taro Kamiya. "Bio-Heap Leaching of Primary Copper Sulfide Ore by JOGMEC." Solid State Phenomena 262 (August 2017): 99–102. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.99.

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Анотація:

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching. In our study, we have been using the primary copper sulfide ore produced in an IOCG deposit. The ore is characterized by high iron content and high acid consumption in leaching. For the optimization of the leaching, the conditions such as ore size, agglomeration, pH and irrigation rate of leaching solution were examined with column leach tests. The best result was over 80 % extraction of copper in 150 days with leaching solution of 1 M sulfuric aci

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29

Slastnikov, Viktor V. "Finely interspersed accessory and ore minerals of the Verkhnee-Zolotoe deposit." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 336, no. 2 (2025): 26–41. https://doi.org/10.18799/24131830/2025/2/4620.

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Анотація:

Relevance. The importance of expanding the resource base of copper and polymetals of the Russian Federation: Verkhnee-Zolotoe silver-copper deposit is localized within an ore node specialized in tin and lead – the study of accessories will allow a better understanding of ore formation for deposits that are alien to its surrounding metallogenic specialization. Aim. To establish the nature of the distribution of finely interspersed accessory ore minerals and their conjunction with certain sulfide associations and metasomatic changes. Methods. Electron scanning and optical microscopy in reflected

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30

Wang, Yi Jie, Shu Ming Wen, Dan Liu, Qin Bo Cao, Qi Cheng Feng, and Chao Lv. "Sulphidizing Flotation of Copper Oxide Ore." Advanced Materials Research 807-809 (September 2013): 2279–83. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.2279.

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Анотація:

The copper oxide ore in Dali, which contains 0.69% of copper and 11.24g/t of silver, was beneficiated by sulphidizing - xanthate flotation method. The flotation tests were carried out systematically with sodium sulfide as sulphidizing agent and butyl xanthate + ammonium dibutyl dithiophosphate as the combined collectors. Through closed-circuit test, a copper concentrate with 18.34% of Cu grade and a recovery of 70.13% were obtained. In addition, silver also was enriched in copper concentration with a grade of 329.37g/t and a recovery of 78.79%, which is convenience for utilization in metallurg

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31

Nie, Wenlin, Jianjun Fang, Shuming Wen, Qicheng Feng, Yanbing He, and Xiaoyong Yang. "Estimation and Improvement of Recovery of Low Grade Copper Oxide Using Sulfide Activation Flotation Method Based on GA–BPNN." Processes 9, no. 4 (2021): 583. http://dx.doi.org/10.3390/pr9040583.

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Анотація:

Copper oxide ore is an important copper ore resource. For a certain copper oxide ore in Yunnan, China, experiments have been conducted on the grinding fineness, collector dosage, sodium sulfide dosage, inhibitor dosage, and activator dosage. The results showed that, by controlling the above conditions, better sulfide flotation indices of copper oxide ore are obtained. Additionally, ammonium bicarbonate and ethylenediamine phosphate enhanced the sulfide flotation of copper oxide ore, whereas the combined activator agent exhibited a better performance than either individual activator. In additio

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32

Jia, Yan, Heyun Sun, Qiaoyi Tan, Jingyuan Xu, Xinliang Feng, and Renman Ruan. "Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water Irrigation." Minerals 11, no. 11 (2021): 1299. http://dx.doi.org/10.3390/min11111299.

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Анотація:

Sulfuric acid solution containing ferric iron is the extractant for industrial heap bioleaching of copper sulfides. To start a heap bioleaching plant, sulfuric acid is usually added to the irrigation solution to maintain adequate acidity (pH 1.0–2.0) for copper dissolution. An industrial practice of heap bioleaching of secondary copper sulfide ore that began with only water irrigation without the addition of sulfuric acid was successfully implemented and introduced in this manuscript. The mineral composition and their behavior related to the production and consumption of sulfuric acid during t

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33

Zhang, Tie Min, Jian Jun Fang, Tai Guo Jiang, Shan Wang, and Ying Bo Mao. "Flotation of Sulphide Copper Ore of Sifangjing in Huidong." Applied Mechanics and Materials 522-524 (February 2014): 1493–96. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.1493.

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Анотація:

Flotation experimental research is carried out on a certain sulphide copper ore of Sifangjing in Huidong, Sichuan province. The ore exist in the deeper part of ore deposit. Because of the deep burried, the oxidation rate is relatively low. The ore belongs to the typical sulfide ore. For the characteristics of the mine and the scene of the test requirements, the use of direct flotation process has achieved a successful recovery of copper. In the cleaning operation ,Strengthen copper sulfur separation to obtain qualified copper concentrate. Under the proper process conditions ,the good technical

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34

Hu, Wentao, Kai Tian, Zhengyang Zhang, et al. "Flotation and Tailing Discarding of Copper Cobalt Sulfide Ores Based on the Process Mineralogy Characteristics." Minerals 11, no. 10 (2021): 1078. http://dx.doi.org/10.3390/min11101078.

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Анотація:

The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained disseminated of ore. In this work, a mineral liberation analyzer (MLA) was employed to study the characteristics of minerals. As a significant mineralogical characteristic, the liberation degree of useful mineral aggregates was determined after grinding, and a correlation was established between the ore grinding size and mineralogical characteristics. The results showed that the adopted ore occurred in sulf

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35

Zhang, Zhong Hui, and Yao Zhong Lan. "Research on the Process Mineralogy of a Copper Ore in Yunnan Province." Advanced Materials Research 803 (September 2013): 347–50. http://dx.doi.org/10.4028/www.scientific.net/amr.803.347.

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Анотація:

This paper studies of the relationship between mineralogical characteristics and beneficiation of a copper ore in terms of process mineralogy.The study shows that the copper ore embraces little sulfide,its gangue minerals are deficient of ferrum and calcium,gangue minerals and copper minerals embedded micro-fine cloth, Fully grinding mill can make the mineral cleavage, and thus get good separation of minerals.

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36

Wang, Yi Jie, Shu Ming Wen, Jian Liu, Qi Cheng Feng, and Meng Yang Lv. "Research on Flotation Tests of Sulfide Copper Ore from Yunan." Advanced Materials Research 634-638 (January 2013): 3466–71. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3466.

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Анотація:

The mineral processing flow sheet and reagent system of flotation copper minerals from a large copper-iron deposit in Yunnan were fully investigated. The results indicate that the optimum conditions for flotation of copper minerals from the material were identified as grinding fineness of 85%, dosage of CaO at 2000g/t , dosage of Na2S at 200 g/t, dosage of butyl xanthate 40g/t. Under such a condition, a copper recovery of 88.17% with a concentrate grade of 26.86% was achieved from the material using a closed circuit flow sheet of "one-stage roughing flotation, one-stage cleaning flotation and

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37

Deng, Jiu Shuai, Shu Ming Wen, Yong Jun Xian, Shao Jun Bai, Dan Liu, and Hai Ying Shen. "Efficient Utilization of Copper Sulfide Ore in Chile by Flotation." Advanced Materials Research 524-527 (May 2012): 975–82. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.975.

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Анотація:

The valuable minerals of a copper sulfide ore in Chile, mainly consist of chalcopyrite and chalcocite as well as contain small amounts of cuprite. Gangue minerals are mainly chlorite, quartz, calcite, arsenopyrite, etc. Most are coarse-grained disseminated minerals, while some are fine-grained disseminated minerals. Flotation has been used for processing these ores. The grinding fineness, lime dosage, collector type and dosage all have influences on flotation results. In the present work, the best condition of grinding fineness, lime, and collector dosage was used to separate the copper sulfid

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38

WANG, H. "Accelerating column leaching trial on copper sulfide ore." Rare Metals 27, no. 1 (2008): 95–100. http://dx.doi.org/10.1016/s1001-0521(08)60038-8.

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39

Can, İlkay B., Seda Özçelik, and Zafir Ekmekçi. "Effects of Pyrite Texture on Flotation Performance of Copper Sulfide Ores." Minerals 11, no. 11 (2021): 1218. http://dx.doi.org/10.3390/min11111218.

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Анотація:

Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to demonstrate influence of pyrite mineralogy on the flotation of copper (sulphidic) ores and develop alternative conditions to improve the performance. Two copper ore samples (Ore A and Ore B) having different textural/modal mineralogy and flotation characteristics were taken from different zones of the same ore deposit. Ore B contained framboidal pyrite and altered pyrite/marcasite, which is conside

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40

Maleki, Hassan, Mohammad Noparast, Sajjad Chehreghani, Mir Saleh Mirmohammadi, and Ali Rezaei. "OPTIMIZATION OF FLOTATION OF THE QALEH ZARI MINE OXIDIZED COPPER ORE SAMPLE BY THE SEQUENTIAL SULFIDATION APPROACH USING THE RESPONSE SURFACE METHOD TECHNIQUE." Rudarsko-geološko-naftni zbornik 38, no. 1 (2023): 59–68. http://dx.doi.org/10.17794/rgn.2023.1.6.

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Анотація:

One of the main challenges in the copper oxide processing industry is the application of flotation to reduce operating costs. Sulfidation-flotation is a commonly employed approach for floating oxide minerals using sulfidizers in order to sulfide the mineral’s surface. In this research work, an oxidized sample from the Qaleh Zari copper mine was used which was a high grade with 5.4% of copper (malachite and azurite). The prepared sample was subjected to mineralogical studies, and the obtained results indicated that the sample was oxidized. Malachite and azurite were the predominant minerals of

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41

Vasyunina, N. V., K. E. Druzhinin, E. A. Burdakova, et al. "Modernizized technological scheme for ore processing of the Udokan deposit." iPolytech Journal 29, no. 2 (2025): 284–96. https://doi.org/10.21285/1814-3520-2025-2-284-296.

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Анотація:

This study aims to develop engineering solutions that would facilitate the elimination of the extraction stage from the processing of Udokan ore (Russia), while ensuring complete recovery of the target element into copper cathode. The efficiency of incorporating two cleaning stages into the flotation cycle was evaluated using a sample of oxidized copper ore with an initial copper content of 1.1%. The flotation was carried out using FMP-L1 and FMP-L3 flotation units. To develop the proposed metallurgical process, we obtained a sulfide concentrate with a copper content of 12.2% from sulfide ore

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42

Deng, Rong Dong, Quan Jun Liu, Xiao Feng Yang, Ting Hu, and Feng Hong Ye. "Experimental Study of Floatation on Non-Independent Copper Oxide Ore from Jilin Province in China." Advanced Materials Research 581-582 (October 2012): 851–55. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.851.

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Анотація:

Through the processing of mineralogical study on a copper ore from Jilin province in China, it found that the copper exist mostly with the form of chalcopyrite, and others exist with the form of copper oxide minerals which with complex ingredient. The copper oxide minerals are due to the altered of the edge of chalcopyrite, and have not formed the independent copper oxide ore. It belongs to unconventional hard-to-beneficiate copper ore. Coarse grinding fineness and bulk floatation was used to recover the copper oxide ore and copper sulfide ore by using amino double phosphoric acid and butylami

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43

Staněk, Stanislav, and Jiří Zimák. "Mineralogy of sulfide ores from the Měděná Adit in the Zlaté Hory Ore District." Geoscience Research Reports 56, no. 1 (2023): 47–58. http://dx.doi.org/10.3140/zpravy.geol.2023.07.

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Анотація:

Until 1993, sulfide ores of copper, lead and zinc, as well as native gold were mined in the Zlaté Hory ore district in the Jeseníky Mountains. These deposits occur in the Devonian volcano-sedimentary complex of the Vrbno Group, which consists of quartzites, phyllites, limestones and metamorphic igneous rocks of intrusive and extrusive nature. The main ore bodies are located in a quartzite horizon containing lenses of felsic metavolcanic rocks or in the underlying and overlying rocks (mainly phyllites). Sulfide mineralization of the Měděná Adit in the Zlaté Hory ore district concentrated in gre

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44

Stepanov, V. A., V. Ye Kungurova та I. A. Koidan. "Металлогения Камчатского срединного массива". Bulletin of the North-East Science Center, № 4 (28 грудня 2020): 39–54. http://dx.doi.org/10.34078/1814-0998-2020-4-39-54.

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The article describes the ore bearance of three stages of reflected activation of the Kamchatka middle massif: Late Cretaceous, Eocene, and Miocene. In the first stage, gold mineralization of the gold-quartz and gold-sulfide-quartz formations was formed; in the second - sulfide platinoid-copper-nickel; in the third - gold-copper-molybdenum-porphyry. The relationship of gold, sulfide platinoid-copper-nickel and gold-copper-molybdenum-porphyry mineralization with certain igneous rock complexes - (Kola, Dukuk and Lavkin) is shown. The mining of nickel, copper from the Shanuch deposit and gold fro

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45

Nascimento, Dryelle, Adriano Lucheta, Maurício Palmieri, et al. "Bioleaching for Copper Extraction of Marginal Ores from the Brazilian Amazon Region." Metals 9, no. 1 (2019): 81. http://dx.doi.org/10.3390/met9010081.

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Анотація:

The use of biotechnology to explore low-grade ore deposits and mining tailings is one of the most promising alternatives to reduce environmental impacts and costs of copper extraction. However, such technology still depends on improvements to be fully applied in Brazil under industrial scale. In this way, the bioleaching, by Acidithiobacillus ferrooxidans, in columns and stirred reactors were evaluated regarding to copper extraction of a mineral sulfide and a weathered ore from the Brazilian Amazon region. Samples (granulometry of 2.0/4.75 mm) were characterized by X-ray diffraction (XRD), ene

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46

Ozturk, Yasemin, Ozlem Bicak, and Zafir Ekmekci. "Effects of Residual Xanthate on Flotation Efficiency of a Cu-Zn Sulfide Ore." Minerals 12, no. 3 (2022): 279. http://dx.doi.org/10.3390/min12030279.

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Reuse of process water in the flotation of sulfide ores has crucial importance for environmental sustainability and improved process economy. However, the chemistry of process water may be a critical subject for the flotation efficiency as the dissolved ion concentration increases with water reuse. In this study, the effects of water reuse on the flotation efficiency of a Cu-Zn sulfide ore were investigated. The flotation flowsheet consists of a pre-flotation section to remove the naturally floatable talc particles, and sequential copper and zinc flotation sections. Calcium, sulfate, thiosulfa

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47

Aleksandrova, T. N., A. V. Orlova, and V. A. Taranov. "Current status in the copper ore processing (review)." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 3 (June 12, 2021): 4–14. http://dx.doi.org/10.17073/0021-3438-2021-3-4-14.

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Анотація:

The article provides the analysis of process flows used for sulfide and oxidized copper ore treatment, reagent schemes, process equipment, indicators of flotation concentration at a number of domestic and foreign concentrating mills and plants. Autogenous and semi-autogenous grinding mills are widely used at the ore preparatory processing at the first stage of grinding to eliminate medium and fine crushing stages. An alternative is the use of high pressure grinding rolls that can reduce electricity consumption as compared to autogenous and semi-autogenous grinding. There is an increase in the

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48

Artemyev, Dmitry A., and Maksim N. Ankushev. "Trace Elements of Cu-(Fe)-Sulfide Inclusions in Bronze Age Copper Slags from South Urals and Kazakhstan: Ore Sources and Alloying Additions." Minerals 9, no. 12 (2019): 746. http://dx.doi.org/10.3390/min9120746.

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In the paper, the results of an investigation into trace elements found in slag sulfides from 14 archaeological Bronze Age settlements of the Cis-Urals, Trans-Urals, and North and Central Kazakhstan are presented. The study used Cu-(Fe)-sulfides as indicator minerals. Cu-(Fe)-S minerals in slags are primarily represented by covellite and chalcocite, as well as by rarer bornite and single chalcopyrite grains. Slag sulfides formed relic clasts and neogenic droplets of different shapes and sizes. Supergenic ores in the Bronze Age in Urals and Kazakhstan played a significant role in the mineralogi

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49

Bobadilla-Fazzini, Roberto A., Veronica Gautier, Hector Jordan, and Pilar Parada. "Bioleaching vs. Chloride Leaching: Real Advantages and Drawbacks for Primary Sulfides." Advanced Materials Research 1130 (November 2015): 423–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1130.423.

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Анотація:

Currently the vast majority of the world’s copper is obtained through sulfide mineral processing. Among the copper sulfides, chalcopyrite is the most economically relevant due to its abundance. Therefore, several technologies have been developed in order to achieve an efficient copper extraction from copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for secondary copper sulfides due to their good results at lab, pilot and industrial scale. Examples such as the Bacterial Thin-Layer technology developed b

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50

Pakostova, Eva, Barry M. Grail, and D. Barrie Johnson. "Column Bioleaching of a Saline, Calcareous Copper Sulfide Ore." Solid State Phenomena 262 (August 2017): 7–11. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.7.

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Анотація:

“Deep in situ biomining”, widely considered to be a potentially environmentally-benign and cost effective biotechnology for extracting and recovering base metals from deep-buried base metal deposits, is being developed within the EU Horizon 2020 project “BioMOre”. Data are presented from non-aerated column experiments in which a saline, calcareous copper-rich ore (kupferschiefer) was subjected to a three-stage eaching protocol: (i) with water, to remove soluble salts; (ii) with sulfuric acid, to remove calcareous minerals and other acid-soluble salts; (iii) indirect bioleaching with a microbio

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