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Sedimentary and metamorphic processes priming black shale for magmatic assimilation of sulfur: an example from the Virginia Formation, Minnesota, United States Miner. Deposita (IF 4.8) Pub Date : 2024-04-25 Ville J. Virtanen, Jussi S. Heinonen, Lena Märki, Matthieu E. Galvez, Ferenc Molnár
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Sulfide saturation in reduced magmas during generation of the Gangdese juvenile lower crust: Implications for porphyry Cu–Au mineralization in the Gangdese belt, Tibet Miner. Deposita (IF 4.8) Pub Date : 2024-04-24 Jin-Lei Sun, Zhong-Jie Bai, Hong Zhong, Xu Liu, Jing-Jing Zhu, Lan Chen, Wei-Guang Zhu
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Stability of a thin film of water formed between a bubble and a quartz surface with acoustic sound Miner. Eng. (IF 4.8) Pub Date : 2024-04-20 Bingyu Yang, Hangil Park, Liguang Wang
Froth flotation, a versatile particle separation technology, is widely used for beneficiation of minerals. Central to the flotation process is the bubble-particle interaction. Recent research progress showed that flotation efficiency could be improved by acoustic sound, which was attributed to increased froth stability, but it was not clear as to whether the acoustic sound would also enhance the bubble-particle
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Optimization of Upper group 2 flotation using Acidithiobacillus ferrooxidans as a modifier Miner. Eng. (IF 4.8) Pub Date : 2024-04-20 Nokubonga G. Zulu, Bongephiwe M. Thethwayo, Mapilane Madiba
Coupling of biotechnology and mineral processing arise from the depletion of high-grade ores. () is a chemolithotroph, γ-proteobacterium, gram negative bacteria that has been used in biomining over the years due to its ability of bio mobilising valuable minerals and metals. In this study, the ability of ability to modify and pre-concentrate base metal sulphides from Upper Group 2 (UG2) was investigated
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Characterisation of the multiphase fluid dynamics of the CoarseAIR™ fluidised bed flotation cell using the Large Modular Array (LaMA) for positron emission particle tracking (PEPT) Miner. Eng. (IF 4.8) Pub Date : 2024-04-19 Diego Mesa, Dawid M. Hampel, Stephen J. Neethling, Tzany Kokalova Wheldon, Pablo R. Brito-Parada
Fluidised bed flotation cells (FBFCs) present a compelling solution for coarse particle flotation, enabling an increase in the target particle size in comminution circuits, with the corresponding energy savings. Despite their potential and strong industrial interest, the three-phase fluid dynamics of large-scale FBFCs remain unexplored due to measurement complexities and size restrictions. This paper
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Strain energy dependent numerical simulation of rock fracture initiation and propagation using soundless cracking demolition agents (SCDA): Effects of SCDA-filled rock joints Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-18 V.R.S. De Silva, H. Konietzky, Ranjith P.G., U.I. Manatunga
Soundless Cracking Demolition Agents (SCDA) are gaining traction as an innovative technique for controlled rock fracturing in applications such as underground energy, mineral extraction, and excavation. This paper presents a novel numerical approach to simulate SCDA-charged rock fracture initiation using the strain energy density of SCDA. This approach eliminates the need for prior knowledge of the
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A micromechanics-based model for rocks exhibiting microcrack-induced damage in plastic solid matrix Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-18 Y. Shi, W.Q. Shen, J.F. Shao
This work is devoted to modeling plastic deformation and microcrack-induced damage in quasi-brittle rocks under compression-dominating stresses. At the microscopic scale, a set of randomly distributed microcracks are embedded in an isotropic elastic–plastic solid matrix. The plastic deformation, microcrack propagation and frictional sliding are inherently coupled. By combining a rigorous homogenization
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Water weakening and the compressive brittle strength of carbonates: Influence of fracture toughness and static friction Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-17 Corentin Noël, Barnaby Fryer, Patrick Baud, Marie Violay
Water is ubiquitous within the pore space of rocks and has been shown to affect their physical and mechanical behaviour. Indeed, water can act on the rock strength via mechanical (i.e., reducing the effective stresses) or chemical effects (e.g., mineral dissolution, mineral alteration, subcritical crack growth, etc.). As rock macroscopic strength is controlled by both fracture toughness and friction
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The migration and volatilization of toxic elements during briquette pyrolysis procedure Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 Juan Chen, Jianjun Wu, Yixin Zhang, Yang Guo, Long Yan, Jian Li, Zhenkun Guo, Bi Chen, Hua Wang
Briquetting technique can be an excellent energy saving utilization of pulverized coal, and the thermal chemical treatment of briquette has attracted the extensive attention of researchers due to its efficiency and applicability. To reveal the migration and volatilization characteristic of toxic trace elements (As, Se and Cd) during pyrolysis procedure of briquette, this paper studied the effects of
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Comparison of circuits over time in Canadian practice Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 James A. Finch, Yue Hua Tan
Evaluation of circuits in Canadian practice based on surveys in 1957 and 2020 was used to identify the common types and whether there was any change over time. Three-stage circuits were considered along with a measure of circuit separation efficiency. The rougher-scavenger-cleaner and rougher-cleaner-cleaner still dominate, together comprising over 60% usage. Correlation against circuit separation
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Exopolysaccharide (EPS) synthesised from Azotobacter vinelandii and its characterisation and application in bioflotation Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 Zejun Wang, Qing Shi, Bo Miao, Binbin Li, Sen Li
In this study, we investigated microbial flotation as a green separation technology in mineral processing. We explored their potential use as environmentally friendly depressants for chlorite by extracting and purifying exopolysaccharides (EPS) from () and comparing them with commercial alginate. Results showed that EPS derived from under different fermentation substrates, particularly carbon sources
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A phase-field model for blasting-induced failure and breakage analysis in rock masses Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-16 Sijia Liu, Miaomiao Kou, Zaiquan Wang, Yongjun Zhang, Fei Liu
In this work, we propose a new phase-field formulation with dynamic JH2 constitutive model in the updated Lagrangian finite element framework for capturing the blasting-induced failure and breakage phenomena in rock masses. We innovatively formulate phase-field evolution by taking mechanical strengths and failure/breakage characteristics of rock materials at intact and residual states under dynamic
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Permeation–strain characteristics and damage constitutive model of coal samples under the coupling effect of seepage and creep Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-15 Qiangling Yao, Yong Li, Xuehua Li, Liqiang Yu, Chuangkai Zheng
Developing and utilizing mining water resources in ecologically fragile mining areas in western China require underground reservoir technologies. However, the creep and permeability of coal pillar dams under the coupling of overburden pressure and stock water seepage are not well understood. This hinders the control of their long-term stability. This study aimed to reveal these features by examining
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Effect of pH and current density on the physical properties of cobalt obtained by electrowinning from sulfate solutions Miner. Eng. (IF 4.8) Pub Date : 2024-04-15 Fabiano Augusto Costa Mafra Passos, Jonas da Cruz Trajano de Souza, Iranildes Daniel dos Santos, Reiner Neumann, Pedro Paulo Medeiros Ribeiro, Achilles Junqueira Bourdot Dutra
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Shapley analysis of the effect of operational variables on recovery and grades of a Knelson concentrator Miner. Eng. (IF 4.8) Pub Date : 2024-04-15 Jessica Frigger, Chris Aldrich, Xiu Liu, Boris Albijanic
Gold ore deposits are decreasing in grade and are becoming more complex in nature. The Knelson gravity concentrator is an attractive option for processing these ores, though it is normally used for free-milling, because they are already widely accepted in the industry and are relatively easy to operate. However, more work needs to be done to optimise the operating conditions for these ore types. In
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The In-Ga-Sb association of the post-Variscan Zn-Pb-Ag vein deposit at Lautenthal, Upper Harz Mountains, Germany: sphalerite mineral chemistry Miner. Deposita (IF 4.8) Pub Date : 2024-04-13 Torsten Graupner, Sören Henning, Simon Goldmann, Sebastian Fuchs, Klaus Stedingk, Wilfried Liessmann, Sven Birkenfeld
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Identifying true collectorless flotation of chalcopyrite in calcium chloride solutions Miner. Eng. (IF 4.8) Pub Date : 2024-04-14 Minsu Hwang, Yufan Mu, Liang Cao, Yongjun Peng
Given the increasing use of seawater containing primary ions (e.g. Na and Cl) and secondary ions (e.g. Ca and Mg) in flotation plants to counteract the global freshwater scarcity, more and more studies have been performed to determine the impacts of seawater on mineral flotation behaviors. From a new and practical niche, this study aimed to determine the natural floatability of chalcopyrite in the
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Efficient removal of the residual ammonium from weathered crust elution-deposited rare earth tailings by a ternary compound eluent Miner. Eng. (IF 4.8) Pub Date : 2024-04-13 Xiaoju Li, Junxia Yu, Xiaodi Li, Rong Wang, Fang Zhou, Zhenyue Zhang, Chunqiao Xiao, Ruan Chi
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Ultrapotassic plutons as a source of uranium of vein-type U-deposits (Moldanubian Zone, Bohemian Massif): insights from SIMS uraninite U–Pb dating and trace element geochemistry Miner. Deposita (IF 4.8) Pub Date : 2024-04-11 Martin Kubeš, Jaromír Leichmann, Vojtěch Wertich, Renata Čopjaková, Markéta Holá, Radek Škoda, Bohdan Kříbek, Julien Mercadier, Michel Cuney, Etienne Deloule, Andreï Lecomte, Ewa Krzemińska
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Novel strategy for improved sylvite flotation through controlled crystallization Miner. Eng. (IF 4.8) Pub Date : 2024-04-12 Yuan Yuan, Weiquan Zhan, Yang Tian, Alejandro López Valdivieso, Hao Yi, Shaoxian Song, Luis A. Cisternas, Feifei Jia
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Pressure monitoring and deformation analysis of a brine-filled salt cavern - A case study of Jianghan, China Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-11 Peng Li, Yinping Li, Xilin Shi, Xinxing Wei, Kun Yang, Hongling Ma, Chunhe Yang, Wei Hu, Hao Xu
Deformation stability plays a crucial role in the construction and operation of hydrocarbon storage salt caverns. Monitoring and analyzing wellhead pressure data under closed well conditions provide valuable insights into the evaluation of cavern stability. In this study, an analysis of five factors influencing internal brine pressure was conducted, which revealed that salt creep and brine thermal
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A machine learning-assisted nondestructive testing method based on time-domain wave signals Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-11 Zhuoran Tian, Jianchun Li, Xing Li, Zhijie Wang, Xiaozhou Zhou, Yang Sang, Chunjiang Zou
The nondestructive testing (NDT) of defects in structure members or geological bodies is essential in engineering survey and construction. Given the complexity of natural rock or rock masses, the NDT of defects within them is extremely challenging in geotechnical engineering. Previous studies predominantly utilized singular or limited features of waveforms, which neglected much information in the signals
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Optimization of flip-flow screen plate based on DEM-FEM coupling model and screening performance of fine minerals Miner. Eng. (IF 4.8) Pub Date : 2024-04-11 Xu Hou, Weinan Wang, Jiahao Pan, Pengfei Mao, Songxue Zhang, Chenlong Duan
Flip-flow screen has unique advantages in dry deep screening of sticky and wet fine minerals. However, during the flip-flow screening process, the continuous collision of mineral materials causes the actual motion state of the screen plate to differ significantly from the ideal state. Clarifying the actual motion changes and stress characteristics of the flip-flow screen plate under the combined action
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Sodic-calcic alteration and transpressional shear along the Atacama fault system during IOCG mineralization, Copiapó, Chile Miner. Deposita (IF 4.8) Pub Date : 2024-04-09 N. M. Seymour, J. S. Singleton, R. Gomila, G. Arancibia, J. Ridley, M. L. Gevedon, D. F. Stockli, S. M. Seman
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Prediction of rockfall hazard in open pit mines using a regression based machine learning model Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-10 I.P. Senanayake, P. Hartmann, A. Giacomini, J. Huang, K. Thoeni
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Genesis of Pb–Zn-Ag-Sb mineralization in the Tethys Himalaya, China: Early magmatic-hydrothermal Pb–Zn(-Ag) mineralization overprinted by Sb-rich fluids Miner. Deposita (IF 4.8) Pub Date : 2024-04-08 Xiang Sun, Ru-Yue Li, Hao-Yu Sun, Paul H. Olin, M. Santosh, Bin Fu, Jun Deng
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Combined acoustical-electrical modeling for tight sandstones verified by laboratory measurements Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-09 Mengqiang Pang, Jing Ba, José M. Carcione, Erik H. Saenger
Tight sandstone reservoirs basically have low porosity and permeability, a complex pore structure and a heterogeneous distribution of immiscible fluids. With the development of theoretical models, it is common to characterize rock properties, i.e., pore structure, microfractures, fluid type and saturation, etc., based on acoustic and electrical properties. We have taken four tight sandstone samples
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Development and experimental verification of a new model for predicting laser-induced rock cutting slit depth Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-09 Zonglin Li, Zhenliang Zhou, Zhongsheng Tan, Zhen Guo, Lilong Zhang
High-energy laser beams have a powerful ability to induce rock fragmentation, but there is still a lack of suitable calculation methods to quantitatively predict the laser-induced rock cutting slit depth. This work aims to provide a new predictive model for the quantitative determination of the laser rock cutting slit depth. In this paper, based on the energy consumption model of laser-induced rock
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Instance segmentation of quartz in iron ore optical microscopy images by deep learning Miner. Eng. (IF 4.8) Pub Date : 2024-04-08 Bernardo Amaral Pascarelli Ferreira, Karen Soares Augusto, Julio César Álvarez Iglesias, Thalita Dias Pinheiro Caldas, Richard Bryan Magalhães Santos, Sidnei Paciornik
Iron ore characterization is essential for the mineral industry since it provides relevant information, such as ores' chemical composition and the textural and morphological aspects of particles, required for designating a proper mineral processing route. Reflected Light Optical Microscopy (RLOM) is typically used in this field, as it allows the identification of most mineral phases by their different
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Effect of agglomeration on nickel extraction and sulfur release from ultramafic nickel sulfide concentrates Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Fanmao Wang, Sam Marcuson, Reda Elsawi, Lucy Liu, Jahir Mion Ramos, Mike Walker, Mansoor Barati
The authors have proposed an upgrading process for ultramafic nickel concentrates which is comprised of agglomeration of iron powders and concentrates followed by a two-stage thermal treatment at temperatures lower than the typical smelting conditions. This allowed the nickel to migrate from the sulfide phase to metallic ferro-nickel particles, making solid-to-solid contact important. Agglomeration
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Corrigendum to “A systematic study on gelatinization efficiency of starch by NaOH for enhanced hematite depression” [Min. Eng. 209 (2024) 108621] Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Elaine Cristina Andrade, Saeed Chehreh Chelgani, Laurindo de Salles Leal Filho
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Reductive thermal plasma conversion of a spodumene concentrate and impact on lithium extraction Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Colin Dessemond, Gervais Soucy, Nicolas Laroche
The conversion of α-spodumene was performed using two different CO/CH thermal reductive plasma reactors. Using one configuration, particle size was proven to have a major role in lithium extraction. Lithium extraction efficiency decreases if the particles are too large. The third phase γ-spodumene is less reactive than β-spodumene and has a negative effect on lithium extraction. The other configuration
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Magmatic evolution of the Kolumbo submarine volcano and its implication to seafloor massive sulfide formation Miner. Deposita (IF 4.8) Pub Date : 2024-04-05 Simon Hector, Clifford G. C. Patten, Aratz Beranoaguirre, Pierre Lanari, Stephanos Kilias, Paraskevi Nomikou, Alexandre Peillod, Elisabeth Eiche, Jochen Kolb
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True triaxial energy evolution characteristics and failure mechanism of deep rock subjected to mining-induced stress Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-05 Heng Gao, Heping Xie, Zetian Zhang, Jun Lu, Dongming Zhang, Ru Zhang, Mingyang Wu
In deep rock engineering, complex stress conditions are encountered, which leads to difficulties in engineering disaster prevention and control. To investigate the failure behaviors and mechanisms of deep rock mining, a series of tests was designed for mining-induced failure at different simulated depths using a multifunctional true triaxial geophysical (TTG) apparatus. The results showed that both
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Electrochemical cobalt oxidation in chloride media Miner. Eng. (IF 4.8) Pub Date : 2024-04-05 Iryna Makarava, Jere Vänskä, Agnieszka Kramek, Jacek Ryl, Benjamin P. Wilson, Kirsi Yliniemi, Mari Lundström
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Intelligent prediction method for underbreak extent in underground tunnelling Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-04 Ming Tao, Zhixian Hong, Huatao Zhao, Mingsheng Zhao, Dong Wang
Underground tunnel excavation using the drill-and-blast method often results in underbreak occurrences due to improper blasting parameters and complex geological environment. This underbreak phenomenon has a profound impact on tunnel safety, stability and construction costs. Traditional approaches for predicting underbreak extent () through field measurements and theoretical models exhibit limitations
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A unified model for frost wedging in an open fissure under unidirectional freezing Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-04 Peichao Zheng, Xianjun Tan, Hailiang Jia, Kai Shen, Zhouzhou Su, Yun Zhou, Reziwanguli Shataer, Yi Xie, Dong Wang, Siming Tian, Wei Wang, Weizhong Chen
The propagation of joints and fissures, included by the frost heaving pressure arising from the water-ice phase transition is considered as frost wedging. This process is widely observed and plays a crucial role in weathering of jointed hard rocks in cold regions. Despite some fundamental results achieved in former experimental studies, a unified theoretical model is still absent, hindering a thorough
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Estimating effective volumes in industrial forced-air flotation cells Miner. Eng. (IF 4.8) Pub Date : 2024-04-03 Luis Vinnett, Juan Yianatos, Francisco Díaz, Ahmad Hassanzadeh
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Tracing the Eh–pH evolution of Cu–Pb–As–Zn supergene mineralization using detailed petrography in the Cap Garonne mineral deposit (Provence, France) Miner. Deposita (IF 4.8) Pub Date : 2024-04-01 Poot Julien, Buelens Pierre, Dekoninck Augustin, Rochez Gaëtan, Yans Johan
The supergene zone of the Cap Garonne mineral deposit (Provence, France) hosts one of the most remarkable mineralogy in the world with no less than 150 minerals, 16 of which are type locality. Such mineral diversity offers a detailed view of mineral and geochemical changes during weathering processes. The stratabound epigenetic primary mineralization occurs within a few meters-thick fluvial conglomerates
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Mechanical and fracturing characteristics of defected rock-like materials under biaxial compression Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-04-02 P.X. Ji, G. Viegas, Q.B. Zhang
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Multiphysics phase-field modeling for thermal cracking and permeability evolution in oil shale matrix during in-situ conversion process Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-30 ChengSi Lyu, Hao Yu, Juan Jin, WenLong Xu, HanWei Huang, JiaNing Zhang, Quan Wang, JianDong Liu, WeiDong Jiang, He Liu, HengAn Wu
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Integrating transient pressure and flow data for determination of hydraulic permeability and specific storage of a shale sample: Experimental tests and sensitivity analysis Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-30 Insun Song, Eunjin Seo
This paper describes a comprehensive investigation to accurately determine the hydraulic permeability and the specific storage of a shale sample. One-dimensional pressure transient tests were conducted on a cylindrical sample under various levels of pore and confining pressures. For the boundary conditions, the upstream pressure was kept constant using a syringe pump, and the downstream storage was
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Non-break modeling and numerical simulation for non-intact rock failure process Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-28 Gen Li, Kai Wang, Chun'an Tang, Jiahao Ye
Simulation of the failure process of non-intact rock containing initial cracks, voids, and other discontinuities is a research hotspot in rock mechanics and geotechnical engineering. The damage smear method has attracted wide attention due to its ability to realistically depict the complete failure processes of rock from the microscopic to the macroscopic scale. However, when portraying pre-existed
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Water-soluble rare earth elements (REEs) recovered from uranium tailings Miner. Eng. (IF 4.8) Pub Date : 2024-03-28 Alan Levett, Antony van der Ent, Thomas Ray Jones, Kimiya Bolouri, Kieran Kelly, James Vaughan, Mansour Edraki, Peter Erskine, Gordon Southam
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Experimental investigation and numerical modeling of effect of specimen size on microwave-induced fracturing of diorite Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Zhongjun Ma, Yanlong Zheng, Fuxin Rui, Gaofeng Zhao, Jianchun Li, Ping Che
The effect of specimen size on microwave-induced fracturing of rocks has not been well understood. In this study, the experimental tests using open-ended microwave and numerical simulations coupling COMSOL Multiphysics and four-dimensional lattice spring model (4D-LSM) were carried out to investigate the evolution process of microwave-induced cracks, and to elucidate the mechanisms responsible for
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Characterizing low-grade refractory gold ores using automated mineralogy coupled with LA ICP-MS Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Steve Jason Chingwaru, Margreth Tadie, Bjorn Von der Heyden
Researchers have made notable progress in quantifying refractory components causing gold losses in traditional extraction methods. The potential for improving gold recoveries lies in targeted re-treatment of the 'invisible' gold fraction hosted within various ore minerals, even at low concentrations. This study presents a methodology for analysing the refractory components that cause gold losses in
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Electrochemical characterizations and galvanic effect of chalcopyrite leaching and passivation-A review Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Xin-Jie Liu, Yalong Liao, Haifei Ma, Qingfeng Liu
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Flowsheet development for and commissioning of the Kamoa-Kakula project Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 N.O. Lotter, E. Whiteman, M.C. Hoffman, V. Nkuna, S.R. Amos, A. Groenewald
The Kamoa-Kakula copper resource, located west of Kolwezi in the Democratic Republic of the Congo, was discovered and explored by Ivanhoe from 2008/9 on. As a greenfield project with prospects of high grade ore and a long life-of-mine, the need for best practice flowsheet development was recognised, so as to ensure sustainability of metallurgical performance at the at the maximum economic level from
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Exploration of a novel depressant pullulan gum for the flotation separation of specularite from aegirite Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Cheng Yang, Guoqi Song, Pengpeng Zhang, Chao Wang, Xiangpeng Gao, Mingyang Li
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Source of metals in the De’erni ultramafic-hosted volcanic massive sulfide deposit, Eastern Kunlun, China Miner. Deposita (IF 4.8) Pub Date : 2024-03-26 Dongmei Tang, Kezhang Qin, Yajing Mao, Noreen J. Evans, Shengchao Xue, Mingjian Cao
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Theoretical analysis of the interaction between blasting stress wave and linear interface crack under high in-situ stress in deep rock mass Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-26 Xiao Guo, Chenxi Ding, Peijun Wei, Renshu Yang
This study theoretically investigates the scattering characteristics of blasting stress waves, treaded as elastic waves, at a linear interface crack in a deep rock mass with an even compressive in-situ stress field. First, the basic equations of the deep rock mass theoretically treaded as a homogeneous isotropic medium with an initial stress field are derived based on the linear elastic, finite deformation
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Effects of alkali pretreatment on the flotation of spodumene and feldspar Miner. Eng. (IF 4.8) Pub Date : 2024-03-26 Zhimin Ma, Longhua Xu, Wenjun Guo, Donghui Wang, Kai Xue
The surface chemistry and morphology of minerals produced by alkali pretreatment affects their flotation behaviors. This study systematically investigated the impact on the mineral surface dissolution using NaOH as a modifier, which could modify the surface properties of minerals and improve the floatability difference between spodumene and feldspar. Various characterizations including flotation experiments
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Prediction of multi-stage froth flotation efficiency of complex lead–zinc sulfide ore using an integrated ensemble neural network–random forest model Miner. Eng. (IF 4.8) Pub Date : 2024-03-26 Kwanghui Jo, Jinyoung Je, Donwoo Lee, Heechan Cho, Kwanho Kim, Kwangsuk You
Despite the long history of flotation in the mineral processing industry, its prediction and understanding remains a great challenge owing to its many variables acting in a complex manner. In this study, we introduced machine learning (ML) models to predict the grade and yield of a multi-stage flotation process of a complex lead–zinc sulfide ore. Over 100 batch flotation tests were conducted in a stepwise
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Insights into metal wear and particle breakage using Bond's abrasiveness test Miner. Eng. (IF 4.8) Pub Date : 2024-03-24 Alan A.A. Tino, Gabriel K.P. Barrios, Luís Marcelo Tavares
Nearly 80 years ago Fred Bond proposed his abrasiveness test, also known as Allis Chalmers abrasion test, together with empirical equations that have been used to predict the wear of mill and crusher liners, besides grinding media. Although those equations have been widely criticized over the years, in particular owing to the limited accuracy of the correlations originally proposed to predict wear
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Computational modelling of microwave-induced fractures in igneous rocks using phase field method Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-23 Zicheng Wang, Chunshun Zhang
This study introduced a simplified thermodynamic model based on the regularized phase field method for simulating the thermally induced fractures of rocks pretreated by microwave. A thermo-mechanical model comprises three main parts developed to evaluate the fractures: the heat generation of the rock specimen is determined via the heat balance equation; the calculation of thermally induced stress is
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Experimental investigation on the influence of NaCl concentration on triaxial mechanical behaviors of a low-clay shale Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-23 Sheng-Qi Yang, Wang-Xing Hong, Jian-Guo Wang, P.G. Ranjith, Xiao-Lin Wang
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Effect of particles on foam drainage Miner. Eng. (IF 4.8) Pub Date : 2024-03-23 Miao Jin, Qiang Wang, Long Liang, Jiakun Tan
Despite many applications, the three phase foam is so complicated and far from being fully understood. Drainage is critical to foam decay, so the effect of particles on foam drainage has been investigated in this research to better understand the complex three phase foam. The power law relationship, drainage regime, foam permeability and the residual solid particles were investigated with different
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Geology and geochronology of the Banchang distal Cu-Mo skarn deposit, Central China Miner. Deposita (IF 4.8) Pub Date : 2024-03-22 Zhaoyi Li, Guiqing Xie, Shengli Li, Yuan Wei
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Brittle rock mass failure in deep tunnels: The role of infilled structural plane with varying dip angles Int. J. Rock Mech. Min. Sci. (IF 7.2) Pub Date : 2024-03-22 Yuzong Li, Liang Yuan, Qinghe Zhang
Filled rock discontinuities are commonly encountered in underground engineering excavations, and their mechanical behavior has a significant impact on the stability of surrounding rocks. However, their performance under three-dimensional stress conditions has rarely been explored in the past. In this study, we summarized the typical failure characteristics of filled structural planes in deep-buried
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Novel approach to locate micro-scale mineral regions of interest in real ores Miner. Eng. (IF 4.8) Pub Date : 2024-03-22 Xu Jiang, Zhiyong Gao, Shihong Xu