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Peng Gao, Yong-hong Qin, Yue-xin Han, Yan-jun Li, and Si-ying Liu, Strengthening leaching effect of Carlin-type gold via high-voltage pulsed discharge pretreatment, Int. J. Miner. Metall. Mater., 28(2021), No. 6, pp. 965-973. https://doi.org/10.1007/s12613-020-2012-5
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A high-voltage pulsed discharge (HVPD) pretreatment was used to strengthen the leaching effect of Carlin-type gold ore containing arsenic. Optimal results of the pretreatment experiments were obtained at the following operating conditions: a spherical gap spacing of 20 mm, pulse number of 100, and voltage of 30 kV. The leaching rate of gold was increased by 15.65% via the HVPD pretreatment. The mass fraction of –0.5+0.35 mm and –0.35+0.1 mm was increased by 10.97% and 6.83% compared to the untreated samples, respectively, and the Au grade of –0.1 mm was increased by 22.84%. However, the superiority of the HVPD pretreatment would be weakened by prolonged grinding time. Scanning electron microscopy results indicated that the pretreated products presented as a melting state and then condensation, accompanying by some pore formation. More micro-cracks were generated at the interface of the ore and the original crack were expended via pulsed discharge pretreatment, with the contact area between the leaching reagent and ore increased, the leaching reaction rate enhanced and the leaching effect strengthened.
| [1] |
X.B. Qiu, J.K. Wen, S.T. Huang, H.Y. Yang, B. Wu and M.L. Liu, Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product, Chin. J. Eng., 39(2017), No. 5, p. 676.
|
| [2] |
X.B. Qiu, J.K. Wen, S.T. Huang, H.Y. Yang, M.L. Liu, and B. Wu, New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment, Int. J. Miner. Metall. Mater., 24(2017), No. 10, p. 1104. doi: 10.1007/s12613-017-1501-7
|
| [3] |
A.D. Bas, F. Safizadeh, E. Ghali, and Y. Choi, Leaching and electrochemical dissolution of gold in the presence of iron oxide minerals associated with roasted gold ore, Hydrometallurgy, 166(2016), p. 143. doi: 10.1016/j.hydromet.2016.10.001
|
| [4] |
H.Y. Yang, Q. Liu, X.L. Song and J.K. Dong, Research status of carbonaceous matter in carbonaceous gold ores and bio-oxidation pretreatment, Trans. Nonferrous Met. Soc. China, 23(2013), No. 11, p. 3405. doi: 10.1016/S1003-6326(13)62881-2
|
| [5] |
Z.L. Dong, T. Jiang, B. Xu, Y.B.Yang, and Q. Li, An eco-friendly and efficient process of low potential thiosulfate leaching-resin adsorption recovery for extracting gold from a roasted gold concentrate, J. Cleaner Prod., 229(2019), p. 387. doi: 10.1016/j.jclepro.2019.05.033
|
| [6] |
A.D. Bas, E. Koc, E.Y. Yazici, and H. Deveci, Treatment of copper-rich gold ore by cyanide leaching, ammonia pretreatment and ammoniacal cyanide leaching, Trans. Nonferrous Met. Soc. China, 25(2015), No. 2, p. 597. doi: 10.1016/S1003-6326(15)63642-1
|
| [7] |
J.J.K. Mbayo, H. Simonsen, and S. Ndlovu, Improving the gold leaching process of refractory ores using the Jetleach reactor, Miner. Eng., 134(2019), p. 300. doi: 10.1016/j.mineng.2019.02.003
|
| [8] |
A.H. Kaksonen, B.M. Mudunuru, and R. Hackl, The role of microorganisms in gold processing and recovery—A review, Hydrometallurgy, 142(2014), p. 70. doi: 10.1016/j.hydromet.2013.11.008
|
| [9] |
X.B. Qiu, Bio-pretreatment of High-sulfur Carlin-type Gold Concentrate and the Cause Analysis of Gold Leaching Limitation [Dissertation], Northeastern University, Shenyang, 2017.
|
| [10] |
E. Bidari and V. Aghazadeh, Alkaline leaching pretreatment and cyanidation of arsenical gold ore from the Carlin-type Zarshuran deposit, Can. Metall. Q., 57(2018), No. 3, p. 283.
|
| [11] |
T. Chernet, High voltage selective fragmentation for detailed mineralogical and analytical information, case study: Oiva’s gold–quartz–dyke in the Lapland granulite belt, Laanila, Northern Finland, [in] Proceedings of the 10th International Congress for Applied Mineralogy (ICAM), Trondheim, 2011, p. 119.
|
| [12] |
A.C. Qiu, Application of Pulse Power Technology, Shaanxi Technology Press, Xi’an, 2016, p. 1.
|
| [13] |
M. Han, X.B. Zou, and G.X. Zhang, Technical Basis of Pulse Power, Tsinghua University Press, Beijing, 2010, p. 30.
|
| [14] |
U. Andres, Development and prospects of mineral liberation by electrical pulses, Int. J. Miner. Process., 97(2010), No. 1-4, p. 31. doi: 10.1016/j.minpro.2010.07.004
|
| [15] |
U. Andres, I. Timoshkin, J. Jirestig, and H. Stallknecht, Liberation of valuable inclusions in ores and slags by electrical pulses, Powder Technol., 114(2001), No. 1-3, p. 40. doi: 10.1016/S0032-5910(00)00260-6
|
| [16] |
P.F. Zhao, J.W. Guo, G.H. Yan, G.Q. Zhu, X.N. Zhu, Z.X. Zhang, and B. Zhang, A novel and efficient method for resources recycling in waste photovoltaic panels: High voltage pulse crushing, J. Cleaner Prod., 257(2020), art. No. 120442. doi: 10.1016/j.jclepro.2020.120442
|
| [17] |
U. Andres and R. Bialecki, Liberation of mineral constituents by high-voltage pulses, Powder Technol., 48(1986), No. 3, p. 269.
|
| [18] |
U. Andres, J. Jirestig, and I. Timoshkin, Liberation of mineral by high-voltage electrical pulses, Powder Technol., 104(1999), No. 1, p. 37.
|
| [19] |
V.A. Chanturiya, I.Z. Bunin and A.T. Kovalev, The role of gas outflow from nanosecond breakdown channels in the electric-pulse discharge disintegration of sulfide minerals, Bull. Russ. Acad. Sci. Phys., 74(2010), No. 5, p. 663. doi: 10.3103/S1062873810050229
|
| [20] |
W. Huang and F.N. Shi, Improving high voltage pulse selective breakage for ore pre-concentration using a multiple-particle treatment method, Miner. Eng., 128(2018), p. 195. doi: 10.1016/j.mineng.2018.08.046
|
| [21] |
K. Bru, S. Touzé, P. Auger, S. Dobrusky, J. Tierrie, and D.B. Parvaz, Investigation of lab and pilot scale electric-pulse fragmentation systems for the recycling of ultra-high performance fibre-reinforced concrete, Miner. Eng., 128(2018), p. 187. doi: 10.1016/j.mineng.2018.08.040
|
| [22] |
E.D. Martelloa, S. Bernardis, R.B. Larsen, G. Tranell, M.D. Sabatino, and L. Arnberg, Electrical fragmentation as a novel route for the refinement of quartz raw materials for trace mineral impurities, Powder Technol., 224(2012), p. 209. doi: 10.1016/j.powtec.2012.02.055
|
| [23] |
G.H. Yan, B. Zhang, B. Lv, G.Q. Zhu, X.N. Zhu, and Y.M. Zhao, Enrichment of chalcopyrite using high-voltage pulse discharge, Powder Technol., 340(2018), p. 420. doi: 10.1016/j.powtec.2018.09.028
|
| [24] |
F.Z. Yan, B.Q. Lin, J. Xu, Y.H. Wang, X.L. Zhang, and S.J. Peng, Structural evolution characteristics of middle-high rank coal samples subjected to high-voltage electrical pulse, Energy Fuels, 32(2018), No. 3, p. 3263. doi: 10.1021/acs.energyfuels.7b03991
|
| [25] |
W. Huang, F.N. Shi, and V. Jokovic, A method to determine the minimum quantity of ore sample required for laboratory scale study of ore pre-concentration by high voltage pulses, Miner. Eng., 127(2018), p. 247. doi: 10.1016/j.mineng.2018.08.003
|
| [26] |
F.N. Shi, W.R. Zuo, and E. Manlapig, Characterisation of pre-weakening effect on ores by high voltage electrical pulses based on single-particle tests, Miner. Eng., 50-51(2013), p. 69. doi: 10.1016/j.mineng.2013.06.017
|
| [27] |
C.L. Duan, Z.J. Diao, Y.M. Zhao, and W. Huang, Liberation of valuable materials in waste printed circuit boards by high-voltage electrical pulses, Miner. Eng., 70(2015), p. 170. doi: 10.1016/j.mineng.2014.09.018
|
| [28] |
P. Gao, S. Yuan, Y.X. Han, Y.J. Li, and H.Y. Chen, Experimental study on the effect of pretreatment with high-voltage electrical pulses on mineral liberation and separation of magnetite ore, Minerals, 7(2017), No. 9, p. 153. doi: 10.3390/min7090153
|
| [29] |
X.T. Zhou, Petrology Analysis Effect for Enhancing Coal Permeability with Repetitive Electric Pulses Wave [Dissertation], China University of Mining and Technology, Xuzhou, 2016.
|
| [30] |
C.J. Zhu, X.M. Lu, B.Q. Lin, F.Z. Yan, C. Guo, Y.D. Hong, and X.L. Zhang, Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses, Adsorpt. Sci. Technol., 36(2018), No. 1-2, p. 170. doi: 10.1177/0263617416686977
|
| [31] |
Y.H. Qin, Y.X. Han, P. Gao, Y.J. Li, and S. Yuan, Pre-weakening behavior of magnetite quartzite based on high-voltage pulse discharge, Miner. Eng., 160(2021), art. No. 106662. doi: 10.1016/j.mineng.2020.106662
|
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