Characterization of liquid seepage hysteresis and capillary diffusion behavior in unsaturated ore heap

WANG Lei-ming; LI Xi-wen; YIN Sheng-hua; ZHOU Gen-mao; LI Hui; LIU Pei-zheng; DENG Bo-na

doi:10.13374/j.issn2095-9389.2021.11.02.006

Volume 45 Issue 3

Mar. 2023

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Article Navigation > Chinese Journal of Engineering > 2023 > 45(3): 359-368

WANG Lei-ming, LI Xi-wen, YIN Sheng-hua, ZHOU Gen-mao, LI Hui, LIU Pei-zheng, DENG Bo-na. Characterization of liquid seepage hysteresis and capillary diffusion behavior in unsaturated ore heap[J]. Chinese Journal of Engineering, 2023, 45(3): 359-368. doi: 10.13374/j.issn2095-9389.2021.11.02.006

Citation:

WANG Lei-ming, LI Xi-wen, YIN Sheng-hua, ZHOU Gen-mao, LI Hui, LIU Pei-zheng, DENG Bo-na. Characterization of liquid seepage hysteresis and capillary diffusion behavior in unsaturated ore heap[J]. Chinese Journal of Engineering, 2023, 45(3): 359-368. doi: 10.13374/j.issn2095-9389.2021.11.02.006

Citation:

WANG Lei-ming, LI Xi-wen, YIN Sheng-hua, ZHOU Gen-mao, LI Hui, LIU Pei-zheng, DENG Bo-na. Characterization of liquid seepage hysteresis and capillary diffusion behavior in unsaturated ore heap[J]. Chinese Journal of Engineering, 2023, 45(3): 359-368. doi: 10.13374/j.issn2095-9389.2021.11.02.006

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Characterization of liquid seepage hysteresis and capillary diffusion behavior in unsaturated ore heap

doi: 10.13374/j.issn2095-9389.2021.11.02.006

WANG Lei-ming^{1, 2, 3, 4
,},
LI Xi-wen^{2
,
,},
YIN Sheng-hua^{1, 2},
ZHOU Gen-mao⁵,
LI Hui²,
LIU Pei-zheng³,
DENG Bo-na⁴

1.
Key Laboratory of Ministry of Education for High-Efficient Mining and Safety of Metal, Beijing 100083, China
2.
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
3.
State Key Laboratory of Safety and Health for Metal Mines, Maanshan 243000, China
4.
Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
5.
Beijing Research Institute of Chemical Engineering Metallurgy, Beijing 101149, China

More Information

Corresponding author: E-mail: heavenli1@163.com
Received Date: 2021-11-02
Available Online: 2021-12-18
Publish Date: 2023-03-01

Abstract

Abstract

To deeply understand the capillary diffusion and seepage hysteresis behavior of the leaching solution in unsaturated ore heaps, this study builds a capillary seepage model suitable for an unsaturated ore heap by employing the COMSOL multiphysics finite element numerical platform to perform the capillary seepage visual simulation. A time-domain reflector is used to detect in-situ liquid holdup changes in the unsaturated heap in real-time, and multifactor response regulations of the capillary seepage process are explored based on a design expert. The potential connection mechanism among the liquid holdup, capillary suction, porosity, and irrigation rate of unsaturated ore heaps is also discussed. Research results show that the heap porosity has an obvious impact on the heap liquid holdup than the irrigation intensity. The increased convergence of the liquid holdup improves with the spraying time, and the ore heap with small porosity takes a longer time to reach a steady status of the liquid holdup. When the effect of the liquid irrigation is not considered, the heap liquid holdup is positively correlated with the porosity ratio and hydraulic conductivity. Especially in the initial stage of the irrigation period (0–20 s), the effects of the irrigation rate, hydraulic conductivity, and porosity ratio on the ore heap liquid holdup are more significant. An unsaturated ore pile solution capillary seepage model considering the gas?liquid two-phase migration is preliminarily constructed. The capillary suction is observed to be more sensitive in the ore heap with lesser porosity. The larger the irrigation rate and the smaller the porosity, the greater is the capillary suction at the bottom of the ore heap, and it is easier for the ore heap to reach a steady state of the liquid holdup.
- unsaturated ore heap,
- fluid flow behavior,
- seepage hysteresis,
- capillary suction,
- liquid holdup,
- COMSOL multiphysics

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References(37)

References

[1]	尹升華, 王雷鳴, 吳愛祥, 等. 我國銅礦微生物浸出技術的研究進展. 工程科學學報, 2019, 41(2):143 Yin S H, Wang L M, Wu A X, et al. Progress of research in copper bioleaching technology in China. Chin J Eng, 2019, 41(2): 143
[2]	Petersen J. Heap leaching as a key technology for recovery of values from low-grade ores - A brief overview. Hydrometallurgy, 2016, 165: 206 doi: 10.1016/j.hydromet.2015.09.001
[3]	尹升華, 王雷鳴. 特殊采礦技術. 北京: 冶金工業出版社, 2021 Yin S H, Wang L M. Special Mining Technology. Beijing: Metallurgical Industry Press, 2021
[4]	Yin S H, Wang L M, Wu A X, et al. Research progress in enhanced bioleaching of copper sulfides under the intervention of microbial communities. Int J Miner Metall Mater, 2019, 26(11): 1337 doi: 10.1007/s12613-019-1826-5
[5]	Chen H, Chen K, Yang M H, et al. A fractal capillary model for multiphase flow in porous media with hysteresis effect. Int J Multiph Flow, 2020, 125: 103208 doi: 10.1016/j.ijmultiphaseflow.2020.103208
[6]	McBride D, Ilankoon I M S K, Neethling S J, et al. Preferential flow behaviour in unsaturated packed beds and heaps: Incorporating into a CFD model. Hydrometallurgy, 2017, 171: 402 doi: 10.1016/j.hydromet.2017.06.008
[7]	馬俊偉. 堆浸工藝中礦巖散體介質的滲透特性試驗研究[學位論文]. 長沙: 中南大學, 2005 Ma J W. Experimental Study of Permeability Characteristics of Ore Bulk Media in Heap Leaching Process [Dissertation]. Changsha: Central South University, 2005
[8]	Shi Z, Zhang Y, Liu M C, et al. Dynamic contact angle hysteresis in liquid bridges. Colloids Surf A Physicochem Eng Aspects, 2018, 555: 365 doi: 10.1016/j.colsurfa.2018.07.004
[9]	Ilankoon I M S K, Neethling S J. Hysteresis in unsaturated flow in packed beds and heaps. Miner Eng, 2012, 35: 1 doi: 10.1016/j.mineng.2012.05.007
[10]	Ilankoon I M S K, Neethling S J, Huang Z B, et al. Improved inter-particle flow models for predicting heap leaching hydrodynamics. Miner Eng, 2017, 111: 108 doi: 10.1016/j.mineng.2017.06.004
[11]	王雷鳴. 制粒礦堆持液行為及其浸出過程強化機制研究[學位論文]. 北京: 北京科技大學, 2021 Wang L M. Study of Liquid Holdup Behavior and Leaching Process Enhancement Mechanism in Agglomerated Heaps [Dissertation]. Beijing: University of Science and Technology Beijing, 2021
[12]	李鑫. 基于CT的黃土微細觀空隙結構及優先流特性研究[學位論文]. 西安: 長安大學, 2020 Li X. Research on Micro and Meso Void Structure and Preferential Flow Characteristics of Loess Based on CT [Dissertation]. Xi'an: Changan University, 2020
[13]	涂文斌, 王勻, 湯勇. 氣液分離強化傳熱多孔結構毛細上升特征. 化工學報, 2016, 67(7):2761 Tu W B, Wang Y, Tang Y. Capillary performance of metal porous media for heat transfer enhancement. CIESC J, 2016, 67(7): 2761
[14]	Lima L R P A. Liquid axial dispersion and holdup in column leaching. Miner Eng, 2006, 19(1): 37 doi: 10.1016/j.mineng.2005.05.020
[15]	繆秀秀, 吳愛祥, 楊保華. 堆浸水力學研究前沿: 結構表征與模型仿真. 中國有色金屬學報, 2018, 28(11):2327 Miao X X, Wu A X, Yang B H. Recent advances in heap leaching research: Characterisation and modelling. Chin J Nonferrous Met, 2018, 28(11): 2327
[16]	Wang L M, Yin S H, Wu A X. Visualization of flow behavior in ore-segregated packed beds with fine interlayers. Int J Miner Metall Mater, 2020, 27(7): 900 doi: 10.1007/s12613-020-2059-3
[17]	Fagan M A, Ngoma I E, Chiume R A, et al. MRI and gravimetric studies of hydrology in drip irrigated heaps and its effect on the propagation of bioleaching micro-organisms. Hydrometallurgy, 2014, 150: 210 doi: 10.1016/j.hydromet.2014.04.022
[18]	薛振林, 甘德清, 張友志, 等. 界面微滲透作用下浸堆內部滲流場無損探測. 中國有色金屬學報, 2020, 30(7):1730 doi: 10.11817/j.ysxb.1004.0609.2020-36440 Xue Z L, Gan D Q, Zhang Y Z, et al. Non-destructive detection of solution flow behavior during heap leaching considering interface micro-infiltration. Chin J Nonferrous Met, 2020, 30(7): 1730 doi: 10.11817/j.ysxb.1004.0609.2020-36440
[19]	Bouffard S C, Dixon D G. Modeling pyrite bioleaching in isothermal test columns with the HeapSim model. Hydrometallurgy, 2009, 95(3-4): 215 doi: 10.1016/j.hydromet.2008.06.001
[20]	Liu W Y, Hashemzadeh M. Solution flow behavior in response to key operating parameters in heap leaching. Hydrometallurgy, 2017, 169: 183 doi: 10.1016/j.hydromet.2017.01.007
[21]	Wu A X, Yin S H, Yang B H, et al. Study on preferential flow in dump leaching of low-grade ores. Hydrometallurgy, 2007, 87(3-4): 124 doi: 10.1016/j.hydromet.2007.03.001
[22]	尹升華, 王雷鳴, 陳勛, 等. 不同堆體結構下礦巖散體內溶液滲流規律. 中南大學學報(自然科學版), 2018, 49(4):949 Yin S H, Wang L M, Chen X, et al. Seepage law of solution inside ore granular under condition of different heap constructions. J Central South Univ (Sci Technol), 2018, 49(4): 949
[23]	Ma T R, Zhang K N, Shen W J, et al. Discontinuous and continuous Galerkin methods for compressible single-phase and two-phase flow in fractured porous media. Adv Water Resour, 2021, 156: 104039 doi: 10.1016/j.advwatres.2021.104039
[24]	Zulian P, Sch?dle P, Karagyaur L, et al. Comparison and application of non-conforming mesh models for flow in fractured porous media using dual Lagrange multipliers. J Comput Phys, 2022, 449: 110773 doi: 10.1016/j.jcp.2021.110773
[25]	陳勛, 尹升華, 嚴榮富, 等. 滲流作用下風化殼淋積型稀土礦細觀孔隙結構演化特征. 工程科學學報, 2021, 43(10):1283 Chen X, Yin S H, Yan R F, et al. Evolution characteristics of mesoscopic pore structure of weathered crust elutiondeposited rare earth ore under solution seepage. Chin J Eng, 2021, 43(10): 1283
[26]	Li T, Wu A X, Feng Y T, et al. Coupled DEM-LBM simulation of saturated flow velocity characteristics in column leaching. Miner Eng, 2018, 128: 36 doi: 10.1016/j.mineng.2018.08.027
[27]	尹升華, 宋慶, 陳威, 等. 硫化銅礦粒孔隙模型重構與溶液滲流模擬. 工程科學學報, 2021, 43(4):495 Yin S H, Song Q, Chen W, et al. Pore model reconstruction of copper sulfide ore agglomerate and simulation of solution seepage. Chin J Eng, 2021, 43(4): 495
[28]	He H L, Aogu K L, Li M, et al. A review of time domain reflectometry (TDR) applications in porous media. Adv Agron, 2021, 168: 83
[29]	Wessolek G, Stoffregen H, T?umer K. Persistency of flow patterns in a water repellent sandy soil - Conclusions of TDR readings and a time-delayed double tracer experiment. J Hydrol, 2009, 375(3-4): 524 doi: 10.1016/j.jhydrol.2009.07.003
[30]	吳愛祥, 李希雯, 尹升華, 等. 礦堆非飽和滲流中的界面作用. 北京科技大學學報, 2013, 35(7):844 Wu A X, Li X W, Yin S H, et al. Interface effects of unsaturated seepage in dump leaching. J Univ Sci Technol Beijing, 2013, 35(7): 844
[31]	McBride D, Gebhardt J E, Croft T N, et al. Modeling the hydrodynamics of heap leaching in sub-zero temperatures. Miner Eng, 2016, 90: 77 doi: 10.1016/j.mineng.2015.11.005
[32]	尹升華, 陳勛. 堆浸體系含水率的影響因素. 中國有色金屬學報, 2015, 25(7):1961 doi: 10.19476/j.ysxb.1004.0609.2015.07.028 Yin S H, Chen X. Influence factors of moisture content in heap leaching. Chin J Nonferrous Met, 2015, 25(7): 1961 doi: 10.19476/j.ysxb.1004.0609.2015.07.028
[33]	Wang L M, Yin S H, Deng B N. Understanding the effect of stepwise irrigation on liquid holdup and hysteresis behavior of unsaturated ore heap. Minerals, 2021, 11(11): 1180 doi: 10.3390/min11111180
[34]	Wang L M, Yin S H, Wu A X, et al. Effect of stratified stacks on extraction and surface morphology of copper sulfides. Hydrometallurgy, 2020, 191: 105226 doi: 10.1016/j.hydromet.2019.105226
[35]	張玉, 于婷婷, 張通, 等. 復雜應力路徑下裂隙泥巖滲透演化規律試驗研究. 工程科學學報, 2021, 43(7):903 Zhang Y, Yu T T, Zhang T, et al. Experimental study of the permeability evolution of fractured mudstone under complex stress paths. Chin J Eng, 2021, 43(7): 903
[36]	崔傳智, 韋自健, 劉力軍, 等. 低礦化度水驅中的微粒運移機理及其開發效果. 工程科學學報, 2019, 41(6):719 Cui C Z, Wei Z J, Liu L J, et al. Mechanism of fines migration in low-salinity waterflooding and its development effect. Chin J Eng, 2019, 41(6): 719
[37]	韓建文. 應力—化學耦合作用下礦堆散體粒級演化及滲透性研究[學位論文]. 贛州: 江西理工大學, 2018 Han J W. Study on Particle Size Evolution and Permeability of Ore Heap Bulk under Stress Chemical Coupling [Dissertation]. Ganzhou: Jiangxi University of Science and Technology, 2018