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Journal articles on the topic 'Sphalerite depression'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 January 2023

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1

Aikawa, Kosei, Mayumi Ito, Nodoka Orii, et al. "Flotation of Copper Ores with High Cu/Zn Ratio: Effects of Pyrite on Cu/Zn Separation and an Efficient Method to Enhance Sphalerite Depression." Minerals 12, no. 9 (2022): 1103. http://dx.doi.org/10.3390/min12091103.

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Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper concentrates. In this study, the flotation behaviors of chalcopyrite and sphalerite in model samples mimicking copper ores with high Cu/Zn ratios (i.e., the ratio of chalcopyrite/sphalerite = 13:1) were investigated with zinc sulfate as a depressant for sphaler

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2

Chen, Hang, Xiong Tong, Xian Xie, et al. "Cyanide Depression Mechanism for Sphalerite Flotation Separation Based on Density Functional Theory Calculations and Coordination Chemistry." Minerals 12, no. 10 (2022): 1271. http://dx.doi.org/10.3390/min12101271.

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In this paper, the adsorption of cyanide and its combination with zinc sulfate on the surface of sphalerite (110) was studied by density functional theory (DFT), and its configurational relationship was analyzed by coordination chemistry. The calculation results show that the adsorption configuration stability of CN− is stronger than that of Zn(CN)2; the chemical bond of Zn(OH)2 is less covalent. The three adsorption modes all make the surface of sphalerite lose more electrons, thereby weakening the reactivity of S and Zn atoms on the sphalerite surface. During the CN− adsorption process, both

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3

Aikawa, Kosei, Mayumi Ito, Atsuhiro Kusano, et al. "Flotation of Seafloor Massive Sulfide Ores: Combination of Surface Cleaning and Deactivation of Lead-Activated Sphalerite to Improve the Separation Efficiency of Chalcopyrite and Sphalerite." Metals 11, no. 2 (2021): 253. http://dx.doi.org/10.3390/met11020253.

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The purpose of this study is to propose the flotation procedure of seafloor massive sulfide (SMS) ores to separate chalcopyrite and galena as froth and sphalerite, pyrite, and other gangue minerals as tailings, which is currently facing difficulties due to the presence of water-soluble compounds. The obtained SMS ore sample contains CuFeS2, ZnS, FeS2, SiO2, and BaSO4 in addition to PbS and PbSO4 as Pb minerals. Soluble compounds releasing Pb, Zn2+, Pb2+, and Fe2+/3+ are also contained. When anglesite co-exists, lead activation of sphalerite occurred, and thus sphalerite was recovered together

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4

El-Shall, H. E., D. A. Elgillani, and N. A. Abdel-Khalek. "Role of zinc sulfate in depression of lead-activated sphalerite." International Journal of Mineral Processing 58, no. 1-4 (2000): 67–75. http://dx.doi.org/10.1016/s0301-7516(99)00055-1.

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5

Huang, Peng, Mingli Cao, and Qi Liu. "Selective depression of sphalerite by chitosan in differential PbZn flotation." International Journal of Mineral Processing 122 (July 2013): 29–35. http://dx.doi.org/10.1016/j.minpro.2013.04.010.

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6

WEI, Qian, Fen JIAO, Liu-yang DONG, Xue-duan LIU, and Wen-qing QIN. "Selective depression of copper-activated sphalerite by polyaspartic acid during chalcopyrite flotation." Transactions of Nonferrous Metals Society of China 31, no. 6 (2021): 1784–95. http://dx.doi.org/10.1016/s1003-6326(21)65616-9.

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7

Feng, Bo, Chunhui Zhong, Liangzhu Zhang, Yutao Guo, Tao Wang, and Zhiqiang Huang. "Effect of surface oxidation on the depression of sphalerite by locust bean gum." Minerals Engineering 146 (January 2020): 106142. http://dx.doi.org/10.1016/j.mineng.2019.106142.

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8

Lamia, Benabbes, and Bounouala Mouhamed. "Reprocessing and environmental desulphurization of sulphide mining waste from sphalerite flotation: case of Chaabet El Hamra mine, Algeria." World Journal of Engineering 14, no. 1 (2017): 42–46. http://dx.doi.org/10.1108/wje-11-2016-0128.

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Purpose Tailings generated by sulphide ore processing at Chaabet El Hamra mine contain a variety of sulphide minerals such as pyrite, marcasite, sphalerite, galena and chalcopyrite with carbonated and siliceous gangue. It is well known that the presence of pyrite can cause environmental threats, in particular the acid mine drainage risk (AMD), if there is not enough neutralizing potential. Waste chemical analyses show that the content of total sulphur (S) is more than 9 per cent, which could be possible to separate the pyrite from other heavy minerals based on interfacial property of these min

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9

Khmeleva, T. N., J. K. Chapelet, W. M. Skinner, and D. A. Beattie. "Depression mechanisms of sodium bisulphite in the xanthate-induced flotation of copper activated sphalerite." International Journal of Mineral Processing 79, no. 1 (2006): 61–75. http://dx.doi.org/10.1016/j.minpro.2005.12.001.

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10

Liu, Yang, Zhicong Wei, and Chen Xue. "Selective depression of Pb2+-activated sphalerite by potassium ferricyanide in Pb-Zn sulfides flotation separation." Minerals Engineering 182 (May 2022): 107558. http://dx.doi.org/10.1016/j.mineng.2022.107558.

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11

Wei, Qian, Liuyang Dong, Fen Jiao, Wenqing Qin, Zuchao Pan, and Yanfang Cui. "The synergistic depression of lime and sodium humate on the flotation separation of sphalerite from pyrite." Minerals Engineering 163 (March 2021): 106779. http://dx.doi.org/10.1016/j.mineng.2021.106779.

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12

CUI, Yan-fang, Fen JIAO, Wen-qing QIN, Liu-yang DONG, and Xu WANG. "Synergistic depression mechanism of zinc sulfate and sodium dimethyl dithiocarbamate on sphalerite in Pb−Zn flotation system." Transactions of Nonferrous Metals Society of China 30, no. 9 (2020): 2547–55. http://dx.doi.org/10.1016/s1003-6326(20)65400-0.

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13

Sun, Xiaohao, Bozeng Wu, Mingzhen Hu, et al. "Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions." Minerals 11, no. 11 (2021): 1216. http://dx.doi.org/10.3390/min11111216.

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Arsenopyrite is a common arsenic-containing mineral that is often closely associated with sulfide minerals, such as pyrite, chalcopyrite, pyrrhotite, galena, and sphalerite, and with precious metals, such as gold and silver. The selective inhibition of arsenopyrite is an important method used to reduce the arsenic content of processed products, the cost of arsenic removal in metallurgical processes, and its impact on the environment. In this study, we discovered a chemical sodium, m-nitrobenzoate (m-NBO), that can effectively inhibit the flotation behaviors of arsenopyrite via sodium butyl xan

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14

Aikawa, Kosei, Mayumi Ito, Atsuhiro Kusano, Sanghee Jeon, Ilhwan Park, and Naoki Hiroyoshi. "Development of a Sustainable Process for Complex Sulfide Ores Containing Anglesite: Effect of Anglesite on Sphalerite Floatability, Enhanced Depression of Sphalerite by Extracting Anglesite, and Recovery of Extracted Pb2+ as Zero-Valent Pb by Cementation Using Zero-Valent Fe." Minerals 12, no. 6 (2022): 723. http://dx.doi.org/10.3390/min12060723.

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The presence of anglesite (PbSO4) in complex sulfide ores negatively affects the separation of Cu-Pb sulfides and sphalerite (ZnS) due to lead activation, and PbSO4 rejected to tailings dams contaminates the surrounding environment with lead. To address these problems, this study investigated the application of ethylene diamine tetra acetic acid (EDTA) pretreatment extracting PbSO4 to ZnS flotation and the recovery of the extracted Pb2+ as zero-valent Pb by cementation using zero-valent iron (ZVI). The application of EDTA pretreatment could extract ~99.8% of PbSO4, thus depressing ZnS floatabi

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15

Aikawa, Kosei, Mayumi Ito, Tatsuya Segawa, et al. "Depression of lead-activated sphalerite by pyrite via galvanic interactions: Implications to the selective flotation of complex sulfide ores." Minerals Engineering 152 (June 2020): 106367. http://dx.doi.org/10.1016/j.mineng.2020.106367.

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16

Zhang, Shengdong, Zhengbin Deng, Xian Xie, and Xiong Tong. "Study on the depression mechanism of calcium on the flotation of high-iron sphalerite under a high-alkalinity environment." Minerals Engineering 160 (January 2021): 106700. http://dx.doi.org/10.1016/j.mineng.2020.106700.

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17

Wei, Zhicong, Hengsong Wang, Chen Xue, and Ming Zeng. "Selective depression of sphalerite by combined depressant K3[Fe(CN)6], ZnSO4, and Na2CO3 in Pb–Zn sulfide flotation separation." Chemical Papers 74, no. 2 (2019): 421–29. http://dx.doi.org/10.1007/s11696-019-00884-w.

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18

Wang, Changtao, Runqing Liu, Wei Sun, Nianwen Jing, Feifei Xie, and Qilin Zhai Dongdong He. "Selective depressive effect of pectin on sphalerite flotation and its mechanisms of adsorption onto galena and sphalerite surfaces." Minerals Engineering 170 (August 2021): 106989. http://dx.doi.org/10.1016/j.mineng.2021.106989.

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19

OSANAI, Hideyo, and Isao MATSUOKA. "Depressing Mechanism of Sphalerite in Hot Flotation and Behavior of Sphalerite Activated with Copper in the Subsequent Zinc Flotation." Shigen-to-Sozai 113, no. 9 (1997): 695–700. http://dx.doi.org/10.2473/shigentosozai.113.695.

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20

Khmeleva, T. N., W. Skinner, and D. A. Beattie. "Depressing mechanisms of sodium bisulphite in the collectorless flotation of copper-activated sphalerite." International Journal of Mineral Processing 76, no. 1-2 (2005): 43–53. http://dx.doi.org/10.1016/j.minpro.2004.10.001.

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21

Hayat, Muhammad Badar, Lana Alagha, and Syed Mohammad Sannan. "Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants." International Journal of Polymer Science 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/4835842.

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In this study, chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena (PbS) and chalcopyrite (CuFeS2) from sphalerite (ZnS) and pyrite (FeS2) using sodium isopropyl xanthate as a collector and 4-methyl-2-pentanol (MIBC) as a frother. Flotation tests were carried out in a D12-Denver flotation laboratory cell in the presence and absence of chitosan and/or sodium cyanide depressant which is commercially used as pyrite depressant in sulfide mineral flotation process. Flotation recoveries and concentrate grades (assay) were studied as a funct

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22

Pak, T. H., Ti-chang Sun, Cheng-yan Xu, and Y. H. Jo. "Flotation and surface modification characteristics of galena, sphalerite and pyrite in collecting-depressing-reactivating system." Journal of Central South University 19, no. 6 (2012): 1702–10. http://dx.doi.org/10.1007/s11771-012-1196-x.

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23

Kim Cawood, Tarryn, and Abraham Rozendaal. "A Multistage Genetic Model for the Metamorphosed Mesoproterozoic Swartberg Base Metal Deposit, Aggeneys-Gamsberg Ore District, South Africa." Economic Geology 115, no. 5 (2020): 1021–54. http://dx.doi.org/10.5382/econgeo.4725.

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Abstract The polymetamorphosed Swartberg Cu-Pb-Zn-Ag deposit in the Namaqua Metamorphic Province of South Africa is a major metal producer in the region, yet its genesis remains poorly understood. The deposit comprises several stratiform to stratabound units, namely the Lower Orebody and Dark Quartzite, the overlying Barite Unit, and the Upper Orebody, all of which are folded by an F2 isoclinal syncline and refolded by an open F3 synform. A discordant Garnet Quartzite unit surrounds the Upper Orebody in the F2 hinge, where it overprints the Lower Orebody and Barite Unit. The Lower Orebody comp

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24

Liu, Qi. "Selective Aggregation of Hydrophilic Gangue Minerals in Froth Flotation." MRS Proceedings 1380 (2012). http://dx.doi.org/10.1557/opl.2012.399.

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ABSTRACTIn a highly dispersed flotation pulp, ultrafine hydrophilic minerals can entrain into froth products even though they may be perfectly hydrophilic. Therefore, effective depression of the hydrophilic minerals in froth flotation relies not only on rendering the minerals hydrophilic, but also on proper particle size control. In this paper, it will be shown that several depressants in mineral flotation systems indeed not only make the minerals hydrophilic but also cause selective coagulation or flocculation of the hydrophilic minerals. As a result, both the genuine flotation and the hydrau

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25

Wang, Qiang, Yu-Long Yang, Yao Tang, Wen-Qi Guo, and Tian-Xin Xiao. "Textural and geochemical characteristics of garnet from the Luoyang Fe skarn deposit, eastern China: implications for ore-forming fluid evolution and mineralization conditions." Geological Magazine, July 12, 2021, 1–14. http://dx.doi.org/10.1017/s0016756821000431.

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Abstract The late Palaeozoic Yong’an–Meizhou depression belt is an important iron (Fe) and polymetallic metallogenic belt in southern China. It has undergone a transformation from Tethys to the circum-Pacific tectonic domain. The Luoyang deposit is one of the typical Fe skarn deposits in the Yong’an–Meizhou depression belt of eastern China. Garnet is a characteristic mineral in the deposit. Two generations of garnets are detected in the deposit based on their textural characteristics and trace-element contents, and are represented by Fe-enriched andradite. The first generation of garnets (Grt1

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26

Mederski, Sławomir, Jaroslav PRSEK, and Żaneta Niemasz. "Geochemistry of tetrahedrite group minerals and associated silver paragenesis in the Boguszów baryte deposit, Poland." Geological Quarterly 64, no. 4 (2020). http://dx.doi.org/10.7306/gq.1562.

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Primary ore mineralization in the abandoned Boguszów baryte-polymetallic deposit, located in the Intra-Sudetic Depression, was studied by reflected light microscopy and electron microprobe. Ore minerals, occurring as veinlets, irregular aggregates and lenses in baryte veins are hosted by the Upper Carboniferous Chełmiec rhyodacite laccolith. They are dominated by galena, sphalerite (with Cd up to 0.04 apfu) and tetrahedrite group minerals (TGM). Four generations of the TGM were distinguished according to textural features and Ag content: (1) low-Ag tetrahedrite-(Zn) (Ag: 0.22–0.6 apfu), (2) Ag

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27

Xu, Saihua, Yuzhao Hu, Yong Cheng, et al. "Genetic relationship between the Maoping Pb-Zn deposit and paleo-oil reservoir in the northern Yunnan-Guizhou depression: Evidence from bitumen trace elements and the in-situ sulfur isotope of pyrite associated with bitumen." Frontiers in Earth Science 10 (January 13, 2023). http://dx.doi.org/10.3389/feart.2022.1109112.

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The coexistence of numerous Mississippi Valley-type (MVT) Pb-Zn deposits and oil/gas reservoirs in the world demonstrates that a close genetic link between them. The northern Yunnan–Guizhou depression (NYGD) is a tectonic unit containing Pb–Zn deposits, paleo-oil reservoirs and shale gas. However, previous studies on the relationship between hydrocarbon accumulation and Pb–Zn mineralization have been ignored. The Maoping Pb–Zn deposit is a large-sized MVT deposit in the NYGD where a large amount of solid bitumen (i.e., a paleo-oil reservoir) occurs, and it is an ideal area to study the relatio

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