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Mobilization of rare earth elements during allanite-fluid interaction: Insights into formation of regolith-hosted rare earth element deposits in South China Miner. Deposita (IF 4.4) Pub Date : 2024-06-26 Jingzhao Dou, Christina Yan Wang, Wei Tan, Zisong Zhao
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Micron-to-nanoscale investigation of Cu-Fe-Ni sulfide inclusions within laurite (Ru, Os)S2 from chromitites Miner. Deposita (IF 4.4) Pub Date : 2024-06-26 José María González-Jiménez, Igor González-Pérez, Gaëlle Plissart, Amira R. Ferreira, Erwin Schettino, Lola Yesares, Manuel E. Schilling, Alexandre Corgne, Fernando Gervilla
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Structural context of the Flatreef in the Northern Limb of the Bushveld Complex Miner. Deposita (IF 4.4) Pub Date : 2024-06-26 J. A. N. Brits, D. F. Grobler, A. Crossingham, T. G. Blenkinsop, W. D. Maier
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Lithium sorption by ion exchange Miner. Eng. (IF 4.9) Pub Date : 2024-06-25 Lídia Cunha, Joana Monteiro, Aurora Futuro, António Fiúza
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Roles of heat and stress transfer in triggering fault instability in conjugate faulted reservoirs Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-24 Yueqiang Ma, Kaiwen Xia, Qinghua Lei, Chongyuan Zhang, Derek Elsworth, Quan Gan, Liang Yuan
The presence of multiple conjugate but non-intersecting faults in geothermal reservoirs presents issues related to fault interaction in the presence of complex coupled thermo-hydro-mechanical (THM) processes in influencing the triggering of seismicity. We examine alternate strategies in stimulating such a conjugate-faulted geothermal reservoir analogous to that hosting the 5.5 Pohang earthquake (2017)
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Estimation of rock core indices for development of underground infrastructure using non-invasive geophysical methods Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-24 Muhammad Hasan, Yanjun Shang, Shengwen Qi, Qingsen Meng
Rock mass characterization offers the basis of the stability criterion for the planning and advancement of civil engineering projects. Rock core index (RCI) is one of the key geotechnical parameters adopted in rock mechanics and rock engineering. RCI provides risk assessment regarding the success criteria of engineering design. Consequently, an accurate estimate of such parameters is a challenging
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Thermal-mechanical modelling on cumulative freeze-thaw deformation of porous rock in elastoplastic state based on Drucker-Prager criterion considering dilatancy Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-24 Zhitao Lv, Mingchao Wu, Zhaohu Wang, Xiangtai Zeng
The comprehensive understanding of freeze-thaw (F-T) deterioration and deformation properties of rock is a critical basis for frost damage prevention on cold regional rock engineering. In freezing process, plastic strain generates in rock when the stress induced by pore ice pressure (PIP) becomes higher than yield strength, and unrecoverable deformation accumulates in rock under multiple F-T cycles
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LithoSegNet: Regional attention-based deep fusion of multi-scale and cross-stage features for real-time lithology segmentation Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-24 ZhenHao Xu, Heng Shi, Peng Lin, Shan Li
Lithology identification plays an important role in engineering construction, disaster prediction, reservoir evaluation, and other fields. However, with the development of mechanization and automation, traditional lithology recognition methods are gradually unable to meet existing demands in terms of recognition speed and efficiency. In order to achieve real-time, fast, and accurate identification
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The effects of the separator structures and magnetic roller arrangements on eddy current separation Miner. Eng. (IF 4.9) Pub Date : 2024-06-23 Zhicheng Shan, Yi Yuan, Zongqiang Zhou, Lei Feng, Bin Cao, Guojian Li, Qiang Wang
The eddy current separator is the key equipment used for the separation and enrichment of non-ferrous metals from the solid waste. The customization and universality requirements for eddy current separators have been improved with the increasingly strict environmental protection requirements in various industries and the pursuit of higher economic benefits by enterprises. The low separation efficiency
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Dynamic mechanical behaviours of frozen rock under sub-zero temperatures and dynamic loads Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-22 Kai Liu, Tingting Wang
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New insights on consolidation behavior of Fe2O3 in the Fe3O4-CaO-MgO-SiO2 system for fluxed pellet production: Phase transformations and morphology evolution Miner. Eng. (IF 4.9) Pub Date : 2024-06-22 Shurong Shi, Lihua Gao, Junhong Zhang, Zhijun He
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Optimizing profile line interval for enhanced accuracy in rock joint morphology and shear strength assessments Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-06-21 Leibo Song, Quan Jiang, Shigui Du, Jiamin Song, Gang Wang, Yanting Gu, Xingkai Wang, Jinzhong Wu
2D profile lines play a critical role in cost-effectively evaluating rock joint properties and shear strength. However, the interval (Δ) between these lines significantly impacts roughness and shear strength assessments. A detailed study of 45 joint samples using four statistical measures across 500 different Δ values identified a clear line interval effect with two stages: stable and fluctuation-discrete
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Effect of low dissolved oxygen on chalcopyrite-molybdenite separation flotation at high altitude areas Miner. Eng. (IF 4.9) Pub Date : 2024-06-21 Yan Miao, Hong Zheng, Guangke Ye, Teng Zhou, Guofan Zhang
Given the scarcity of conventional low-altitude high-quality copper–molybdenum resources, people gradually explore mining opportunities in elevated regions. Molybdenite in high-altitude ores is initially recovered with chalcopyrite, which is then separated and floated to produce refined molybdenite. There are few studies on the influence of the sulfide ore flotation process under high-altitude and
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Synergistic performance of magnetic ion-imprinted nanocomposite for selective separation of gadolinium Miner. Eng. (IF 4.9) Pub Date : 2024-06-21 Youssef El Ouardi, Nafea Achalhi, Svetlana Butylina, Shiyu Geng, Egor Fadeev, Sami Virolainen
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Experimental study on dynamic deformation and breaking mechanism of high-temperature hard rock cutting by abrasive water jet Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-20 Jianming Shangguan, Zhaolong Ge, Zhe Zhou, Xu Zhang, Lei Liu, Zhongtan Li
The development of deep geothermal resources encounters challenges related to high temperatures and hard reservoir rocks. Abrasive water jets (AWJ) offer a potential solution to enhance the efficiency of breaking high-temperature hard rocks in deep ground. This mainly originated from their combined characteristics of jet cooling impact and high-speed abrasive grinding. In order to investigate the dynamic
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The effects of water content on mineralogical and drainage quality dynamics in weathering mine waste rock Miner. Eng. (IF 4.9) Pub Date : 2024-06-20 Nima Saberi, Bas Vriens
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Mineral phase reconstruction of Bayan Obo tailings by smelting reduction and crystallization control of molten slag containing niobium, rare earth and titanium Miner. Eng. (IF 4.9) Pub Date : 2024-06-20 Bo Zhang, Jiafan Liu, Xingli Jia, Tong Xing, Chengjun Liu, Maofa Jiang
Niobium (Nb), rare earth elements (REEs), and titanium (Ti) in Bayan Obo tailings are dispersed across various fine mineral phases. To efficiently recover these valuable elements from Bayan Obo tailings, a novel processing method of complex multimetallic-associated ores, utilizing smelting reduction and crystallization control, is proposed and investigated in this study. First, by observing the crystallization
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Online separation of critical rare earth elements from end-of-life permanent magnets using micro polymer inclusion beads (µPIBs) Miner. Eng. (IF 4.9) Pub Date : 2024-06-20 Charles F. Croft, M. Inês G.S. Almeida, Spas D. Kolev
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Investigation of Seasonal Variations in Glencore’s Kidd Creek Cu-Zn ore flotation Miner. Eng. (IF 4.9) Pub Date : 2024-06-20 Patrick Rankin, Antonio Di Feo, Sadan Kelebek, Baian Almusned, Brian Hart
Water management in mining and mineral processing operations is becoming increasingly important in the 21st century due to water scarcity concerns and as part of a greater push for sustainability. The aim of this study is to investigate the impacts of seasonal water quality in the Glencore’s Kidd Creek copper-zinc concentrator in Timmins, Ontario, Canada.
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Magnetite geochemistry as a proxy for metallogenic processes: A study on sulfide-mineralized mafic–ultramafic intrusions peripheral to the Kunene Complex in Angola and Namibia Miner. Deposita (IF 4.4) Pub Date : 2024-06-19 Lorenzo Milani, Lize Oosthuizen, Trishya M. Owen-Smith, Grant M. Bybee, Ben Hayes, Jérémie Lehmann, Hielke A. Jelsma
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New insights of selective rupture of synthetic sample under high voltage pulse discharge: A numerical simulation of electric field distribution Miner. Eng. (IF 4.9) Pub Date : 2024-06-19 Yonghong Qin, Ziyu Yang, Yuexin Han, Peng Gao, Yanjun Li, Ningyu Zhang, Jianming Gao
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Fractal relationship between energy and particle size during multistage fragmentation of magnetite ore Miner. Eng. (IF 4.9) Pub Date : 2024-06-19 Ze Gan, Feng Gao, Deqing Gan, Yunpeng Zhang
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Rock cutting using disc tool assisted by the vertical pre-slotting on free-face Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-16 Xiaodi Zhang, Hongxiang Jiang, Kuidong Gao, Congcong Gu, Hongsheng Li
Pre-slotting rock is an effective method for improving the rock cutting performance of mechanical cutting tools. A method of rock cutting using a disc tool assisted by vertical pre-slotting on free-face has been proposed, and in this paper, the effect of the number and configuration of pre-slots on the improvement of rock cutting performance is evaluated. The progress of crack propagation is analyzed
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Milling efficiency and wear behavior of silicon grinding media in autogenous stirred media milling Miner. Eng. (IF 4.9) Pub Date : 2024-06-15 Marcel Filipe Möller, Christoph Peppersack, Arno Kwade
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Magmatic to aqueous phase transition in Li-pegmatite: microtextural and geochemical study of muscovite–lepidolite from Boam mine area, Uljin, South Korea Miner. Deposita (IF 4.4) Pub Date : 2024-06-14 Woohyun Choi, Changyun Park, Chul-Ho Heo, Seok-Jun Yang, Il-Hwan Oh, Kyung Su Park, Sung Hwa Choi
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Petrogenesis of Ni-sulfide mineralisation in the ca. 3.0 Ga Maniitsoq intrusive belt, western Greenland Miner. Deposita (IF 4.4) Pub Date : 2024-06-13 Wolfgang D. Maier, D. D. Muir, S-. J. Barnes, K. Szilas
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Mode-I fracture toughness and damage mechanism of dry and saturated sandstone subject to cryogenic condition Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-13 Yuliang Zhang, Guowei Ma, Xudong Li
The storage of liquefied natural gas (LNG) in underground coal mine tunnels offers numerous advantages, with the fracturing characteristics of surrounding rock under cryogenic conditions (−162 °C at the lowest) closely tied to the safety of the storage. However, a substantial knowledge gap persists within the entire temperature range, presenting a significant challenge in our understanding. The innovation
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A new strategy for clean utilization of zinc oxide dust: Preparation of spinel zinc ferrite by solid phase reaction and its catalytic degradation of organic wastewater Miner. Eng. (IF 4.9) Pub Date : 2024-06-13 Yukun Huang, Xiaolei Chen, Yangyang Fan, Chongqing Wang, Yijun Cao, Weijun Peng, Biao Fu, Jiang Liu, Mingzhen Hu
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Control of conventional continuous thickeners via proximal policy optimization Miner. Eng. (IF 4.9) Pub Date : 2024-06-13 Jonathan R. Silva, Thiago A.M. Euzébio, Márcio F. Braga
With the rise of historical data availability and increased computational power, reinforcement learning (RL) has become more prominent. It has shown the ability to outperform human knowledge in certain areas. RL is particularly valuable in control applications due to its generalization, self-adjustment, and independence from a mathematical model. Despite its potential, there are limited studies and
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Comparison of chemical and biological leaching methods with the effect of chloride on the recovery of nickel, cobalt and copper from a pentlandite-pyrrhotite concentrate Miner. Eng. (IF 4.9) Pub Date : 2024-06-12 Tiina Heikola, Marja Salo, Jarno Mäkinen, Quentin Dehaine, Martina Bertelli, Päivi Kinnunen
In this study, a finely ground nickel sulphide concentrate, consisting mainly of pyrrhotite, pentlandite and chalcopyrite, was leached in shake flask and batch reactor experiments. The objective was to determine the optimal method to recover nickel and cobalt, both hosted in pentlandite, and copper hosted in pentlandite and chalcopyrite respectively. The selected leaching methods tested were sulphuric
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Application of copper for sufficient metal extraction from zinc leaching residue: Process optimization and copper reuse Miner. Eng. (IF 4.9) Pub Date : 2024-06-12 Limin Zhang, Yunyan Wang, Yun Li, Zhumei Sun, Yong Ke, Cong Peng, Mingfei Zhu, Yongjian Luo, Xiaobo Min
The advanced treatment of zinc leaching residue (ZLR) is of significance for carbon reduction and sustainable development of zinc smelting industry. Herein, a fast and sufficient hydrometallurgical extraction of metals from zinc leaching residue under mild conditions was proposed via application of metal copper. The results showed that 85.07 % Cu, 97.20 % Cd, 95.05 % As, 96.65 % Mn, 95.86 % In, and
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The effect of etheramine type on the hydrophobicity of quartz particles from iron ore Miner. Eng. (IF 4.9) Pub Date : 2024-06-08 Wendel Johnson Rodrigues, Pierre Azevedo Fernandes, Antonio Eduardo Clark Peres
The cationic reverse flotation route is one of the main processes to remove silicates from iron ore, and etheramines are the most common surfactants used to modify the hydrophobicity of silicate surfaces to make them floatable. The performance of etheramines in silica flotation is a function of a number of structural parameters including the raw material sources that contribute the carbon chain, which
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Selective biosorption and recovery of scandium using the alga Fucus vesiculosus Miner. Eng. (IF 4.9) Pub Date : 2024-06-08 Laura Castro, Nelly Abrahamyan, Arevik Vardanyan, Felisa González, Narine Vardanyan, Jesús A. Muñoz
The goal of this work was to study the viability of the application of biosorption using the brown alga in the recovery of scandium from red mud. The highest affinity of the biosorbent for scandium and aluminium was at pH 3. Sorption isotherms fitted to the Langmuir model for scandium and aluminium with adsorption capacities as high as 1.04 mmol·g for both metals but with higher affinity for scandium
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Removal of uranium (VI) from acidic aqueous solutions by ion flotation using colloidal gas aphrons (CGAs) Miner. Eng. (IF 4.9) Pub Date : 2024-06-08 Zuli Mo, Qingliang Wang, Zhimin Guo, Zhiwu Lei, Fang Hu, Eming Hu, Pengfei Hu
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Biomolecular mechanism in the uptake of Pt(IV) by Saccharomyces cerevisiae EBY100 cells expressing platinum binding peptides Miner. Eng. (IF 4.9) Pub Date : 2024-06-08 Boitumelo F. Mashangoane, Evans M. Nkhalambayausi Chirwa, Brian Gidudu
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Using zircon and apatite chemistry to fingerprint porphyry Cu – Mo ± Au mineralization in the Delamerian Orogen, South Australia Miner. Deposita (IF 4.4) Pub Date : 2024-06-07 Wei Hong, Adrian Fabris, Sarah Gilbert, Benjamin P. Wade, Alan S. Collins, Tom Wise, Anthony J. Reid
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Thermal fracturing of anthracite under low-energy microwave irradiation: An experimental study Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-07 Yirui Gao, Yixin Zhao, Sen Gao, Zhuang Sun, Xiaoliang Wang, Hao Wang
Microwave-assisted coalbed methane (CBM) development is a very promising technology for engineering applications. The mechanism of the macro and micro thermal fracture of coal must be further discussed because of the thermal inhomogeneity of microwave caused by the heterogeneity and structural complexity of coal. In this study, the temperature, weight and P-wave velocity of anthracite were tested under
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Cross-linked β-cyclodextrin polymers for adsorption of flotation frothers for mineral processing water reclamation Miner. Eng. (IF 4.9) Pub Date : 2024-06-07 Todd Gillam, Ashlyn Austin, William Skinner, David A. Beattie, Marta Krasowska, Anton Blencowe
The inclusion complexation capabilities of cyclodextrins permit them to mediate the adsorption of hydrophobic molecules. Though often associated with pharmaceutical formulations these properties afford a capacity for the extraction of appropriate hydrophobic guest molecules within industrial processes, such as water reclamation from frother contamination within mineral flotation circuits. Industrially
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An eco-friendly depressant derived from grape seed extract (GSE) as depressant for flotation separation of pyrite from chalcopyrite under low-alkalinity conditions Miner. Eng. (IF 4.9) Pub Date : 2024-06-04 Shiqin Dong, Haiyang He, Zhilian Qiu, Liguo Peng, Shuang Qin, Jianjun Fang, Dianwen Liu, Peilun Shen
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New insights on the formation of the polymetamorphic Felbertal tungsten deposit (Austria, Eastern Alps) revealed by CL, EPMA, and LA-ICP-MS investigation Miner. Deposita (IF 4.4) Pub Date : 2024-06-02 Cordula P. Haupt, Joachim Krause, Bernhard Schulz, Jens Götze, Johannes Chischi, Jasper Berndt, Stephan Klemme, Steffen Schmidt, Karsten Aupers, Nils Reinhardt
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Intelligent detection of dynamic cracking along an interface of brittle material using high-speed photography assisted by data augmentation and machine learning Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-03 Jiahao Tie, Wei Wu
Dynamic cracking along an interface of brittle material is a fundamental knowledge of rock faulting but remain largely enigmatic. Laboratory investigation of the extremely fast process requires the use of advanced high-speed photography, which limits wide participation in this research. This study applies image data augmentation and Convolutional Neural Network (CNN) to assist high-speed photography
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A new stage control device for open TBM tunnel lining support in water-rich weakly cemented soft rock Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-06-03 Xin Kang, Xiongyao Xie, Jia Zou, Shengxiang Lei, Biao Zhou, Qijun Dong
Based on the convergence confinement method, yielding support has become an important means to control large deformations of soft rock. However, it is not sufficient to adopt a single yield for different failure processes of the surrounding rock. This study investigated the zonal deformation and failure mechanism of surrounding rock during open tunnel boring machine (TBM) excavation of inclined shafts
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Migration behavior of iron and phosphorus during gas-based reduction for high-phosphorus iron ore Miner. Eng. (IF 4.9) Pub Date : 2024-06-02 Guangheng Ji, Cihong Xiao, Xu Gao, You Zhou, IL Sohn, Shigeru Ueda, Wanlin Wang
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Development of a deep neural network and a PSO algorithm to predict ore hardness using X-ray diffraction and atomic emission spectroscopy Miner. Eng. (IF 4.9) Pub Date : 2024-06-01 T. De Almeida, A.S. Nicolau, R. Schirru, M. Bueno
Mining serves as the initial link in the supply chain for metals in manufacturing, and comminution − the process of reducing ore size through crushing and milling during mineral processing − is notably energy-intensive, accounting for up to 4 % of global power consumption, and its efficient management hinges on the variability within the mineral body, relying heavily on a comprehensive understanding
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Early-age reactivity and strength development in high volume mine tailings-based alkali activated binders and their application potential Miner. Eng. (IF 4.9) Pub Date : 2024-06-01 Rijul Kanth Ramasamy Jeyaprakash, Sahil Surehali, Aswathy Simon, Taihao Han, Aditya Kumar, Narayanan Neithalath
Mine tailings (MT) present environmental and health risks, necessitating suitable waste management strategies to safely dispose them. One of the most effective methods to immobilize detrimental ingredients present in tailings, yet at the same time synthesize value-added materials in large volumes, is through the development of cementitious binders containing tailings. In this work, copper mine tailings
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Polyphased gold enrichment as a key process for high-grade gold formation: Insights from the 10 Moz Jundee-Bogada camp (Yilgarn Craton, Western Australia) Miner. Deposita (IF 4.4) Pub Date : 2024-05-31 Sumail, Nicolas Thébaud, Quentin Masurel, Laura Petrella, Peter le Roux, Chris Stott
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Stability analysis of longwall top-coal caving face in extra-thick coal seams based on an innovative numerical hydraulic support model Int. J. Min. Sci. Technol. (IF 11.7) Pub Date : 2024-05-31 Jun Guo, Wenbo Huang, Guorui Feng, Jinwen Bai, Lirong Li, Zi Wang, Luyang Yu, Xiaoze Wen, Jie Zhang, Wenming Feng
The relationship between support and surrounding rock is of great significance to the control of surrounding rock in mining process. In view of the fact that most of the existing numerical simulation methods construct virtual elements and stress servo control to approximately replace the hydraulic support problem, this paper establishes a new numerical model of hydraulic support with the same working
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A phase transition model for acid dissolution along a rough-walled carbonate fracture Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-05-31 Yun Chen, Haiyang Mao, Guowei Ma
Carbonate reservoirs commonly feature rough-walled fractures with complex geometries and hydraulic properties, posing significant challenges in accurately evaluating the dissolution patterns and conductivities along these fractures during acid stimulation processes in oil, gas, and geothermal production. This study conducts an experimental investigation of acid treatment in carbonate fractures with
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The impact of chloride ions on chalcopyrite leaching: A multiscale and multimodal assessment Miner. Eng. (IF 4.9) Pub Date : 2024-05-31 Luis Salinas-Farran, William Brownscombe, Francesco Iacoviello, Paul R. Shearing, Pablo Brito-Parada, Stephen J. Neethling
Understanding the variability of leaching kinetics is extremely challenging due to the nature of leaching processes. Common experimental setups, such as column leaching experiments, only allow for quantification of apparent leach kinetics at the macroscale (e.g. at the particle or column level), failing to capture grain-scale variability. In this paper, we study variability in leaching kinetics at
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Effects of ultrasound on the electrochemical cementation of copper onto iron Miner. Eng. (IF 4.9) Pub Date : 2024-05-31 Mohamed Aâtach, Miguel Antunes Simão, Stoyan Gaydardzhiev
A laboratory-scale investigation was conducted to study the cementation of copper from a CuSO – based acidic solution onto iron balls as sacrificial media under the application of low-frequency ultrasound and under silent conditions. The influence of several parameters such as pH of solution, stirring speed, temperature, ultrasonic frequency was evaluated. The results show that the use of ultrasound
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A study on influential rock properties for predicting the longitudinal wave velocity in a rock bolt: Numerical and machine learning approaches Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-05-30 Jung-Doung Yu, Hyung-Koo Yoon
The longitudinal wave velocity () in a rock bolt is a useful parameter for evaluating the conditions of the rock bolt and the surrounding rock mass. This study investigated the influence of rock properties on the prediction of in a rock bolt using numerical and machine learning approaches. Through numerical simulations, we obtained a dataset of the variations in according to rock properties, compressional
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Step-wise co-removal and solidification of U and Mo contaminants in mine drainage with ferric salt and tailings Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Guihong Han, Aohua Li, Yizhuang Wang, Hu Sun, Yanfang Huang, Bingbing Liu
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Microencapsulation-based surface modification for improving flotation separation of Cu-Zn mixed sulfide minerals Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Ilhwan Park, Dai Uchida, Sanghee Jeon, Kosei Aikawa, Naoki Hiroyoshi, Mayumi Ito
Selective flotation of copper sulfides like chalcopyrite (CuFeS) from Cu-Zn mixed sulfide ores with high Cu/Zn ratios has proven difficult due to undesired activation of sphalerite (ZnS). Although the addition of excess zinc sulfate (ZnSO)—a sphalerite depressant—can achieve the selective flotation of chalcopyrite, the presence of pyrite (FeS) promotes the activation of sphalerite due to enhanced dissolution
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Effect of plate teeth spacing on particle capture in high intensity magnetic separation adopting grooved plates with elliptic teeth Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Xiayu Zheng, jinrui Cheng, Sheng Zhou, Weiwei Cheng, Zixi Sun, Dongfang Lu, Yuhua Wang
For further improving recovery of ultrafine paramagnetic minerals, optimization of horizontal high intensity magnetic separator (HIMS) is of great significance. Grooved plates are key component of the HIMS system. Previous study showed that grooved plate with elliptic teeth had better magnetic characteristics and particle capture performance than conventional plate with right-angle teeth, but those
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CatBoost-SHAP for modeling industrial operational flotation variables – A “conscious lab” approach Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Saeed Chehreh Chelgani, Arman Homafar, Hamid Nasiri, Mojtaba Rezaei laksar
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Iodide-assisted leaching of chalcopyrite concentrate in acidic chloride solution: Effect of different parameters on the copper extraction rate Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Cristóbal Martínez-Bussenius, Álvaro Videla
Chalcopyrite leaching has slow kinetics in sulfate media compared to other copper minerals. Studies have shown that these slow kinetics are caused by a passivation layer generated during the mineral’s dissolution and/or by its semiconductor properties. In the continuous search for regents to improve kinetics, the use of iodide in sulfate media has led to a significant improvement in the leaching rate
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Modelling of particulate and fluid flow in laboratory scale SMDs using coupled DEM-SPH simulations Miner. Eng. (IF 4.9) Pub Date : 2024-05-30 Divine Ssebunnya, Aubrey Mainza, Stephen Neethling
The stirred media detritor (SMD) is a common mill type used to achieve ultrafine grinds within the minerals industry. It is vertically orientated with a pin impeller. This study focusses on assessing the differences in fluid and particulate flow characteristics in three different laboratory scale SMD models. The computational model uses a two-way coupled discrete element method (DEM) and smooth particle
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A micromechanical analysis of marble pulverization under quasi-static progressive cyclic loading Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-05-29 Bin Fu, Yingchun Li, Chun'an Tang, Yinlin Ji, Arno Zang
Highly fragmented rocks (i.e., pulverized rocks) in the fault damage zone presumably develop during co-seismic deformation processes. These pulverized rocks close to the fault core are generally thought to originate from high strain rates, whereas the genesis of pulverized rocks that can be found several hundred meters away from the fault core – where quasi-static conditions prevail – remains unclear
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Influence of coupling and properties of encapsulating mortars on the anchoring capacity of rock bolts Int. J. Rock Mech. Min. Sci. (IF 7.0) Pub Date : 2024-05-29 Emiliano M. Giraldo Paredez, Arístides Sotomayor, Teófilo Allende, Mariano Pacheco
Rock bolts are the most widely used support elements in rock excavations. Some bolts anchor themselves and others require encapsulants to attach to the wall of the holes. The coupling of the rock bolts in the walls of the drill holes and the properties of the mortars with which the rigid bars are installed are aspects that have been little studied; basically, due to the difficulty of obtaining specimens
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Exploring the highly efficient depressant role of fenugreek gum on talc in chalcopyrite flotation Miner. Eng. (IF 4.9) Pub Date : 2024-05-29 Yuhang Che, Wei Chen, Sheng Liu, Guangsheng Zeng, Guangyi Liu