Abstract
Marmatite often associates with copper sulfide ore with the role of Cu2+ in marmatite dissolution being important in hydrometallurgy. In this work, we found that cupric ions (Cu2) can accelerate marmatite dissolution significantly at high temperature, regardless of sulfuric acid concentration (pH 0.5–2.5). Marmatite dissolved faster at lower acid concentrations and compared with cupric-free conditions, and the concentration of zinc dissolved in the presence of Cu2+ ions increased by 5500 mg/L. When the acid concentration was high (pH above 2.5), the acceleration effect of high Cu2+ concentration was more obvious. In addition, the consumption of Cu2+ was low at high acid concentration (pH below 1.5), but Cu2+ consumption increased significantly at low acid concentration (pH above 2.5). X-ray diffraction (XRD) of the leaching residues proved that no copper-containing mineralogical phase was produced at high acid concentration, but copper-containing products were formed at low acid concentration. Kinetic analysis showed that marmatite dissolution was mainly controlled by surface reaction. The reaction between Cu2+ and marmatite should be different at different concentrations of sulfuric acid.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Schaefer S, Gokcen N (1982) Electrochemical determination of the thermodynamic properties of sphalerite, ZnS (beta). High Temper Sci 15(2–3):225–237
De Souza AD, Pina PS, Leão VA (2007) Bioleaching and chemical leaching as an integrated process in the zinc industry. Min Eng 20(6):591–599
Deller G (2005) World zinc supply and demand-heading for a late-decade price spike. Lead & Zinc 5:17–25
Dehghan R, Noaparast M, Kolahdoozan M (2008) Statistical evaluation and optimization of factors affecting the leaching performance of a sphalerite concentrate. Int J Min Process 89(1):9–16
Córdoba EM, Muñoz JA, Blázquez ML, González F, Ballester A (2008) Leaching of chalcopyrite with ferric ion. Part III: effect of redox potential on the silver-catalyzed process. Hydrometallurgy 93(3):97–105
Yuehua H, Guanzhou Q, Jun W, Dianzuo W (2002) The effect of silver-bearing catalysts on bioleaching of chalcopyrite. Hydrometallurgy 64(2):81–88
Zhao H, Zhang Y (2019) Catalytic mechanism of silver in the oxidative dissolution process of chalcopyrite: experiment and DFT calculation. Hydrometallurgy 187:18–29
Miller JD, Portillo HQ (1981) Electrochemistry in silver catalysed ferric sulfate leaching of chalcopyrite. J Macromol Sci Part B Phys
Price D, Warren G (1986) The influence of silver ion on the electrochemical response of chalcopyrite and other mineral sulfide electrodes in sulfuric acid. Hydrometallurgy 15(3):303–324
Liu ZX, Yin ZL, Hu HP, Chen QY (2012) Catalytic-oxidative leaching of low-grade complex Zinc Ore by Cu(II) Ions produced from Copper Ore in Ammonia-Ammonium Sulfate solution. Metall Mater Trans B 43(5):1019–1026
Chen S, Qin W-Q, Qiu G-Z (2008) Effect of Cu2+ ions on bioleaching of marmatite. Trans Nonferrous Metals Soc China 18(6):1518–1522
Pei G (2011) Catalytic effect of Ag+ and Cu2+ on leaching realgar (As2S2). Hydrometallurgy 106(1):99–103
Meng X (2019) The role of cupric ions in the oxidative dissolution process of marmatite: a dependence on Cu2+ concentration. Sci Total Environ 675:213–223
Zhao H (2017) Stepwise bioleaching of Cu–Zn mixed ores with comprehensive utilization of silver-bearing solid waste through a new technique process. Hydrometallurgy 171:374–386
Popov SR, Vučinić DR (1990) The ethylxanthate adsorption on copper-activated sphalerite under flotation-related conditions in alkaline media. Int J Min Process 30(3):229–244
Aydogan S, Aras A, Canbazoglu M (2005) Dissolution kinetics of sphalerite in acidic ferric chloride leaching. Chem Eng J 114(1):67–72
Dehghan R, Noaparast M, Kolahdoozan M (2009) Leaching and kinetic modelling of low-grade calcareous sphalerite in acidic ferric chloride solution. Hydrometallurgy 96(4):275–282
Acknowledgements
This work was supported by the National Natural Science Foundation of China (51704331), Young Elite Scientists Sponsorship Program by CAST (2017QNRC001), and Innovation-Driven Project of Central South University (2018CX019).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Meng, X., Zhao, H., Zhang, Y., Zhang, Y., Lv, X., Wang, S. (2020). Effect of Sulfuric Acid Concentration on Marmatite Dissolution in the Presence of Cupric Ions. In: Azimi, G., Forsberg, K., Ouchi, T., Kim, H., Alam, S., Baba, A. (eds) Rare Metal Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36758-9_31
Download citation
DOI: https://doi.org/10.1007/978-3-030-36758-9_31
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-36757-2
Online ISBN: 978-3-030-36758-9
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)