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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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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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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
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Effects of Au doping on the adsorption of xanthate on pyrite surface in presence of H2O: A DFT study Miner. Eng. (IF 4.8) Pub Date : 2024-03-19 Ziyong Chang, Baili He, Yuanjia Luo, Zhengchang Shen, Laichang Zou, Qiankun Wang, Zhongmei Sun
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Reverse calcite flotation applied for the beneficiation of the Queguay Formation limestone Miner. Eng. (IF 4.8) Pub Date : 2024-03-19 Ian de Amores, Santiago Seiler, Elisa Tomey, Gustavo Sánchez
Limestone is a significant resource for the Uruguayan mining industry. The Queguay Formation hosts a sedimentary limestone deposit containing quartz inclusions as its primary impurity, which limits its use in applications other than cement. In this work, a representative sample from Queguay Formation was characterized and subjected to flotation tests. The application of reverse froth flotation is proposed
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A bulk sorting trial of copper ore using a magnetic resonance analyser Miner. Eng. (IF 4.8) Pub Date : 2024-03-16 Peter J. Coghill, Evans Simpemba
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Modelling, analysis and validation of a dynamic dense medium separation circuit model for detecting medium losses Miner. Eng. (IF 4.8) Pub Date : 2024-03-16 C.S. Lowry, J.D. le Roux, I.K. Craig
Dense medium separation circuits use a dense medium to separate low density waste material from high density valuable minerals. Since the dense medium is an expensive consumable, it is recovered after separation of the valuable minerals from waste. A dynamic nonlinear model of a dense medium separation circuit of an iron ore plant in South Africa is developed to track the flow of medium in the circuit
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Hydrophobic-hydrophilic bubble-particle kinetics in a downcomer Miner. Eng. (IF 4.8) Pub Date : 2024-03-16 S. Parkes, B. Wright, P. Wang, E. Stiller, M. Firouzi, K.P. Galvin
Declining ore grades have been addressed through exponentially higher cell residence times. With cell sizes approaching 1000 m, improved kinetics is crucial. Downcomers, which increase shear rates for improved recovery of fine hydrophobic particles, may also cause a strong deposition flux of ultrafine hydrophilic particles close to the bubble surface, via lubrication forces. Model feeds of varying
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Ion flotation kinetic predictions using empirical and phenomenological models Miner. Eng. (IF 4.8) Pub Date : 2024-03-13 Fatemeh Sadat Hoseinian, Mehdi Safari, David Deglon
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Dynamics of particle attachment in a model stirred cell: A new technique to characterize and quantify particle floatability Miner. Eng. (IF 4.8) Pub Date : 2024-03-10 Milad Eftekhari, Karin Schwarzenberger, Patrick Schlereth, Kerstin Eckert
Floatability evaluation is critical to predicting flotation results and designing a flotation flowsheet. Laboratory-scale flotation cells are commonly used to study particle floatability, but differences in cell design and governing hydrodynamics make extrapolation to industrial scale operations difficult. In this work, a new experimental approach based on particle attachment dynamics is proposed to
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Gravity separation of fine itabirite iron ore using the Reflux Classifier – Part II – Establishing the underpinning partition surface Miner. Eng. (IF 4.8) Pub Date : 2024-03-10 Armando F.d.V. Rodrigues, Homero Delboni Junior, James Zhou, Kevin P. Galvin
This work assessed the potential of a single stage Reflux Classifier to upgrade itabirite iron ore to high grade at satisfactory recovery. Part I reported on the detailed findings of the experimental program and the physical transport of the particles through the system. A key purpose of the present paper was to deduce the underlying partition surface from relatively basic feed information on the Fe
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Trace element impurities in anode copper from Olympic Dam, South Australia Miner. Eng. (IF 4.8) Pub Date : 2024-03-09 Nigel J. Cook, Kathy Ehrig, Cristiana L. Ciobanu, Sarah E. Gilbert, Hassan Gezzaz
Anode copper is the intermediate product between copper smelting and electrorefining. Anodes are typically 98.5 to 99.8 % pure and require electrorefining to high-purity copper cathode that can be sold to customers. Impurity elements, including Ag, Au, As, Sb, Bi, Se, Te, Sn, Pb, Co, and Ni (alongside minor Fe, Al, and Si), are either dissolved within anode copper, or contained within micron-scale
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Pyrolysis liquid of pine wood: A novel efficient depressant of pyrite in galena flotation Miner. Eng. (IF 4.8) Pub Date : 2024-03-08 Zuchao Pan, Can Cai, Guoyan Liang, Fen Jiao, Congren Yang, Qian Wei, Wenqing Qin
The pyrolysis liquid of pine (PL) had a significant depression effect on pyrite, but its effect on galena was minimal. Within the pH range of 8.0–10.0, the recovery of pyrite was below 10 % upon the addition of 200 mg/L PL, whereas that of galena remained above 90 %. XPS analysis showed that the main functional groups adsorbed on the pyrite surface were C–OH and CO. TOF-SIMS analysis showed that substances
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Effect of nutrient concentration, dissolved salts, and mineralogy at high temperature column bioleaching of a pyrrhotite-pyrite secondary ore Miner. Eng. (IF 4.8) Pub Date : 2024-03-08 Carmen Falagán, David W. Dew, Karen A. Hudson-Edwards
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Recovery of oxalic acid from hydrochloric acid and cobalt containing hydrometallurgical side-stream by solvent extraction Miner. Eng. (IF 4.8) Pub Date : 2024-03-08 Reza Aref, Niklas Jantunen, Sami Virolainen
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Assessing the depression of high-concentration pyrite in copper flotation by high pH Miner. Eng. (IF 4.8) Pub Date : 2024-03-06 Richard Li Jie Lee, Yongjun Peng
Treating high-pyrite-containing ores has been problematic in copper flotation plants where selective separation of copper minerals from pyrite is challenging to achieve. Raising pulp pH is common for pyrite depression when pyrite feed grade is low. Whether raising pulp pH can equally depress pyrite in copper flotation when pyrite feed grade is high remains unanswered. Hence, this research examined
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Process mineralogy of unconventional mineral deposits examples of applications and challenges Miner. Eng. (IF 4.8) Pub Date : 2024-03-05 Kurt Aasly
Process mineralogy is an important field within the mining industry. It is widely known that the application of process mineralogy can be used to solve problems and challenges, and as a tool for optimization, in the mineral processing plant. The field also contributes to an increased value of ore concentrates produced. However, how can the knowledge from, and experience with process mineralogy be applied
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CFD simulation and water model experiments with overflow-type supergravity reactor set up for continuously removing inclusions from aluminum melt Miner. Eng. (IF 4.8) Pub Date : 2024-03-05 Zhe Wang, Qilong Wei, Meng Hu, Zhancheng Guo
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Multi-source unsupervised domain adaptive mill load forecasting method based on deep learning and fusion features Miner. Eng. (IF 4.8) Pub Date : 2024-03-04 Yiwen Liu, Gaowei Yan, Rong Li, Shuyi Xiao, Mifeng Ren, Lan Cheng
In the grinding industry, accurate prediction of the mill load is the key to enhancing plant profitability and reducing mill failures. After the condition changes, the model is usually mismatched, and the true label cannot be obtained in time. To solve this problem, we propose a multi-source unsupervised domain adaptation model based on deep learning and fusion features (MUDA_DF), which is suitable
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Quantifying the degree of selectivity in a Flocculation-Flotation process of LiCoO2 and graphite using scanning electron microscopy and image processing analysis Miner. Eng. (IF 4.8) Pub Date : 2024-03-02 Tommi Rinne, Mohazzam Saeed, Rodrigo Serna-Guerrero
This research article studies selective flocculation as a means for improving flotation of lithium-ion battery active materials using mixtures of pure LiCoO (LCO) and graphite. Scanning electron microscopy (SEM) combined with image analysis via density-based spatial clustering of applications with noise (DBSCAN) is presented as a novel method to quantitatively determine the degree of selectivity in
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Improved azurite sulfurization with ethylenediamine modification and its effects on flotation behaviors: Insight from copper vacancy Miner. Eng. (IF 4.8) Pub Date : 2024-03-02 Jinpeng Cai, Xiaohua Yu, Chao Su, Bin Pei, Peilun Shen, Dianwen Liu
Enhanced sulfurization has always been the focus of flotation research on copper oxide minerals. In this study, ethylenediamine (EDA) was used to improve the sulfurization of azurite. ICP-OES, AFM, XPS, Zeta potential, EPR and DFT calculation were applied to reveal the underlying promoting mechanism, and flotation tests were conducted to evaluate the effect of EDA on sulfurization flotation of azurite
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Efficient and stable leaching of gold in a novel ethydiaminedhephen acetic-thiosulfate system Miner. Eng. (IF 4.8) Pub Date : 2024-03-01 Guowei Zhang, Lei Hou, Peng Chen, Qi Zhang, Yu Chen, Nasriddinov Zamoniddin Zainiddinovich, Chunhui Wu, López Valdivieso Alejandro, Feifei Jia
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Residual Dewatering Aids in Process Water on Flotation Performance of a Selected Cu-Ni-PGM Ore from a Siliceous Reef Miner. Eng. (IF 4.8) Pub Date : 2024-03-01 Malibongwe S. Manono, Saahil F. Khan, Lisa L. October, Kirsten C. Corin
The increasing scarcity of water has led to mine operations recycling water from tailing dams, thickener overflow, dewatering and filter products. However, water quality is found to influence the process of ore flotation, with adverse effects on flotation selectivity. The adsorption of the collector onto valuable minerals may also be affected by the unintended change on water chemistry. This study
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Importance of considering classification and liberation when optimising comminution and flotation Miner. Eng. (IF 4.8) Pub Date : 2024-02-29 K.C. Runge, J.J. Frausto, M.M. Lisso, V. Jokovic, M. Yahyaei
With the world demand for minerals accelerating, there is an increasing need to optimise grinding and flotation processes to maximise flotation recovery and minimise energy use. This paper aims to demonstrate that it is important to consider liberation in these optimisation studies. Classification is a key process linking grinding and flotation. This paper presents a series of case studies that compare
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Impurities removal from acidic solution of nickel cobalt complex hydroxide using pulsed disc and doughnut column Miner. Eng. (IF 4.8) Pub Date : 2024-02-28 Chi Wang, Boren Tan, Chenye Wang, Yong Wang, Peng Xing, Huiquan Li, Xiahui Gui, Jianguo Yang, Xue Guan
In this work, a 30 mm diameter pulsed disc and doughnut solvent extraction column was used for impurities removal from nickel cobalt complex hydroxide acid solution by solvent extraction. The effects of dispersed phase velocity, continuous phase velocity and pulse intensity on drop diameter, dispersed phase holdup and mass transfer were investigated. The results show that the drop size decreases gradually
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Investigation of gold-amino acid interactions using Fourier Transform Infrared spectroscopy and correlation with gold dissolution; Studies at different pH values Miner. Eng. (IF 4.8) Pub Date : 2024-02-27 Anthony Tapfuma, Guven Akdogan, Robert C. Luckay, Margreth Tadie
Recent developments in the field of gold leaching using amino acids have generated an interest in understanding the bonding/interactions involved in gold amino acid complexation. So far, only Density Function Theory (DFT) models have predicted the bonding of gold with amino acids, and there has been limited experimental work to verify the postulated quantum models. This study therefore aims to address
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Preliminary investigation into lithium extraction by phosphoric acid leaching of spodumene Miner. Eng. (IF 4.8) Pub Date : 2024-02-25 Justin Paris, Shiva Mohammadi-Jam, Ronghao Li, Jingyi Liang, Hak Jun Oh, Ozan Kökkılıç, Sidney Omelon, Kristian E. Waters
Lithium demand has risen significantly with the dominance of lithium-ion batteries in renewable energy technology. Spodumene is a primary lithium-bearing mineral of lithium extraction interest, due to its comparatively high grade and simple composition. However, lithium extraction processes from spodumene remain complex. In this study, phosphoric acid was investigated as a lithium leaching agent. Preliminary
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Hydrocyclone separation enhancement of fine particles based on interface control Miner. Eng. (IF 4.8) Pub Date : 2024-02-24 Rui Wang, Ziang Zhang, Xiaokang Yan, Haijun Zhang, Lijun Wang
Hydrocyclones are devices that can efficiently separate and classify mixtures of multiphase systems based on density and grain size differences under centrifugal sedimentation. The cut size, denoted as , indicates the separation performance of the device, with lower values indicating higher separation limits. To reduce the cut size, researchers have tried different methods, such as modifying the hydrocyclone
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Evaluation of the Crago flotation process to recover the iron contained in the fine tailings of Mont-Wright mine Miner. Eng. (IF 4.8) Pub Date : 2024-02-23 J. Mesquita, Y. Foucaud, H. Turrer, M. Badawi
Mont-Wright mine is an important asset of ArcelorMittal located in the province of Quebec, Canada. This asset annually produces 25 million tons of iron ore concentrate with an assay of 66 % Fe, achieved through a beneficiation circuit comprised entirely of spiral concentrators. Nevertheless, 45 million tons of tailings are discarded to the tailings dam and, due to the intrinsic inefficiency of the
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Effect of an electro-assisted biochemical cycle reactor on bio-oxidation of gold ore Miner. Eng. (IF 4.8) Pub Date : 2024-02-23 Tongyi Yang, Miaomiao Dai, Guoteng Tang, Zechong Guo, Yixuan Yang, Huazhe Jiao
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Environmental impacts of lithium hydroxide monohydrate production from spodumene concentrate – A simulation-based life cycle assessment Miner. Eng. (IF 4.8) Pub Date : 2024-02-22 Heikki Lappalainen, Marja Rinne, Heini Elomaa, Jari Aromaa, Mari Lundström
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Investigating the reprocessing potential of abandoned zinc-lead tailings ponds: A comprehensive study using physicochemical, mineralogical, and 3D geometallurgical assessments Miner. Eng. (IF 4.8) Pub Date : 2024-02-22 Ayoub El Aallaoui, Mustapha El Ghorfi, Abdellatif Elghali, Yassine Taha, Hamza Zine, Mostafa Benzaazoua, Rachid Hakkou
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Application of a new self-consistent-charge density-functional tight-binding(SCC-DFTB) parameter set for simulating the adsorption of flotation reagents on the surface of typical lead minerals Miner. Eng. (IF 4.8) Pub Date : 2024-02-21 Yibing Zhang, Jianhua Chen, Yuqiong Li, Cuihua Zhao, Ye Chen
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Continuous bioreactor leaching of nickel sulfide concentrates with moderately thermophilic bacteria and archaea Miner. Eng. (IF 4.8) Pub Date : 2024-02-19 Paul R. Norris, Robert Fitzpatrick, Ana L. Santos
A commercial process for bioreactor leaching of a nickel concentrate by-product of talc mining has been described previously. It was developed and operated (2016–2018) at about 45–46 °C. Further features of bioleaching that concentrate have now been investigated in laboratory-scale reactors with continuous feeds of up to 10% (w/v) solids and an emphasis on temperatures at and a few degrees above that
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Zeolite synthesis from coal fly ash and its application to heavy metals remediation from water contaminated with Pb, Cu, Zn and Ni ions Miner. Eng. (IF 4.8) Pub Date : 2024-02-18 Sofi Buzukashvili, Roberto Sommerville, Weiqing Hu, Oliver Brooks, Ozan Kökkılıç, Philippe Ouzilleau, Neil A. Rowson, Kristian E. Waters
The unique properties of zeolites, such as their microporous structure and ion exchange capacity, make them a promising material for water treatment applications. This work explores the synthesis of zeolites from coal fly ash (CFA) using the microwave fusion and hydrothermal synthesis method and investigates their effectiveness in removing heavy metal ions, specifically Cu, Zn, Ni, and Pb, from an
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An eco-friendly and low-cost approach for separation and recycling of Mo and Cu from molybdenite purification wastewater Miner. Eng. (IF 4.8) Pub Date : 2024-02-17 Hadi Khalife, Milad Rezaei
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Flotation recovery of monazite from kaolinite using sodium oleate collector: Understanding mineral–collector interaction Miner. Eng. (IF 4.8) Pub Date : 2024-02-16 G.B. Abaka-Wood, S. Xu, L.D. Ayedzi, J. Addai-Mensah, W. Skinner
Schematic representation of adsorption interaction between monazite and collector oleate.
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Where chemistry and mineralogy meet during PGE and BMS flotation Miner. Eng. (IF 4.8) Pub Date : 2024-02-16 N.J. Shackleton, V. Malysiak, E.H.W. Theron, P.F. Dicks
Flotation is a complex physical chemical process in which flotation reagents play a vital role in valuable minerals recovery and concentrate grades. This study examines the performance of new generation AECI Mining Chemicals (previously named Senmin) collectors. They were developed to enhance the valuable minerals recovery and flotation selectivity by tailoring the collectors to target specific valuable
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Investigation into the impact of High-Altitude conditions on the characteristics and flotation performance of pyrite grinding products Miner. Eng. (IF 4.8) Pub Date : 2024-02-16 Guangke Ye, Yan Miao, Dezhi Liu, Guofan Zhang
In high-altitude regions, the grinding process of pyrite is influenced by variations in dissolved oxygen (DO) levels at different altitudes, subsequently impacting the characteristics of the ground products and their flotation performance. In this study, a comprehensive investigation was conducted using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS), X-ray
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Optimization of intensified leaching and selective recovery of Y and Eu from waste cathode ray tube phosphor Miner. Eng. (IF 4.8) Pub Date : 2024-02-16 Jenni Lie, Hardy Shuwanto, Hairus Abdullah, Felycia Edi Soetaredjo, Suryadi Ismadji, Christian Julius Wijaya, Chintya Gunarto
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Recovery of “pure” CuS nanoparticles using biogenic H2S from a bioleach liquor Miner. Eng. (IF 4.8) Pub Date : 2024-02-15 Gonzalo Recio-Sánchez, Pedro Hernández, Christian Canales, Aileen Segura, Alex Schwarz, Marjory López, Ivan Nancucheo
Here we describe the bioleaching of a sulfide ore using a consortium with moderately thermophilic acidophiles in stirred reactors between 37 and 45 °C. The most effective extraction for copper was achieved at 42 °C, with ∼51 % within 30 days at pH 1.8. Microbial diversity showed that the consortium was dominated by the genera , , , . Pregnant leach solution (PLS) obtained at 42 °C was filtered and
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A systematic study on gelatinization efficiency of starch by NaOH for enhanced hematite depression Miner. Eng. (IF 4.8) Pub Date : 2024-02-15 Elaine Cristina Andrade, Saeed Chehreh Chelgani, Laurindo de Salles Leal Filho
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Application of design of experiments (DoE) in evaluating crushing-screening performance for aggregates production Miner. Eng. (IF 4.8) Pub Date : 2024-02-14 Kanishk Bhadani, Gauti Asbjörnsson, Kristoffer Hofling, Erik Hulthén, Magnus Evertsson
The configuration and the interaction between the crushers and screens enable aggregate producers to produce products that are in accordance with the applicable product certification. However, the performance of the system is seldom optimized for the given conditions and market demand. This paper aims to describe the experimental work and the results of quantifying the crusher and screen performance
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Freeze-thaw weathering assisted beneficiation of graphite from natural ore resources in cold regions Miner. Eng. (IF 4.8) Pub Date : 2024-02-14 Kangkang Sun, Weifei Yin, Huazhong Dong, Xuan Jiao, Dahai You, Bin Wang, Jionghui Wang, Yangshuai Qiu
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DEM simulation and optimization of crushing chamber shape of gyratory crusher based on Ab-t10 model Miner. Eng. (IF 4.8) Pub Date : 2024-02-12 Jianbo Guo, Guoqiang Wang, Gang Sun, Shuai Wang, Wei Guan, Zeren Chen
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Bed density prediction of gas–solid separation fluidized bed based on genetic algorithm-back propagation neural network Miner. Eng. (IF 4.8) Pub Date : 2024-02-10 Junwei Guo, Guangjian Ren, Tianyang Gao, Shaoyu Yao, Zongsheng Sun, Fan Yang, Bo Zhang
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Adsorption and accumulation of N2 at the solid–liquid interface: The impact of hydration films Miner. Eng. (IF 4.8) Pub Date : 2024-02-10 Bao Li, Dan Su, Daochang Che, Lei Zhang, Shengyu Liu, Boris Albijanic
The adsorption and accumulation of gases at the solid–liquid interface facilitate the formation of nanobubbles, offering significant benefits to the separation of fine mineral particles in flotation processes. In this study, a synergy of experimental and molecular simulation (MD) simulations was employed to elucidate the effects of mineral surface hydration film characteristics on the behavior of gas
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Life cycle assessment of recycling lithium-ion battery related mineral processing by-products: A review Miner. Eng. (IF 4.8) Pub Date : 2024-02-09 He Zhou, Wen Li, Thomas Poulet, Hakan Basarir, Ali Karrech
The increasing demand for lithium-ion batteries (LIBs) has accelerated the extraction and processing of numerous critical minerals embedding lithium, cobalt, manganese, nickel, and graphite. Extracting these elements from the earth’s crust is inevitably associated with the generation of by-products, leading to various environmental impacts that need to be carefully considered. It is essential to integrate
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Beneficiation of silver and silver-bearing lead–zinc ores: A review Miner. Eng. (IF 4.8) Pub Date : 2024-02-08 Hongliang Zhang, Heng Yu, Wei Sun, Shangyong Lin, Chenyang Zhang
Silver (Ag), atomic number 47, is a rare metal resource with dull-white color. In nature, most of the silver resources are associated with Lead-Zinc ores, except for a small portion in the form of simple substance or silver minerals. Therefore, the acquisition of metallic silver is relatively difficult. Flotation is the principal beneficiation method to concentrate silver minerals. In previous flotation
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A methodology for gangue management in the flotation of a PGM-bearing ore through laboratory tests, mineralogical analysis and circuit modelling Miner. Eng. (IF 4.8) Pub Date : 2024-02-08 Belinda McFadzean, Megan Becker, Stefan Geldenhuys, Jenni Sweet
With the ever-increasing demand for sustainability in the mineral processing industry, many operations are focusing on minimising their energy usage and maximising their smelter capacity. One approach to achieving this, is by ensuring concentrates fed to smelters do not contain excess unwanted gangue minerals inadvertently recovered during flotation. In the case of the South African platinum group
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Base metals (Fe, Al, Ti) and rare earth elements (Ce, La, Pr) leaching from red mud through an efficient chemical-biological hybrid approach Miner. Eng. (IF 4.8) Pub Date : 2024-02-08 Zahra Ilkhani, Farzane Vakilchap, Niloofar Sadeghi, Seyyed Mohammad Mousavi
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The influence of the chemical composition of phosphorites from southern Israel on foaming during acidification Miner. Eng. (IF 4.8) Pub Date : 2024-02-06 Amit Levy, Faina Gelman, Aya Schneider-Mor, Alexey Kamyshny
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Multivariate image processing in minerals engineering with vision transformers Miner. Eng. (IF 4.8) Pub Date : 2024-02-03 Xiu Liu, Chris Aldrich
Vision transformers (ViTs) are a new class of deep learning algorithms that have recently emerged as a competitive alternative to convolutional neural networks. In this investigation, their application to two operations previously studied in the mineral processing industry is considered. These are image recognition of fines in coal particles on conveyor belts and characterisation of the particle size
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Selective flotation of calcite and dolomite from apatite using bio-based alternatives to conventional collectors: Castor and mustard oils Miner. Eng. (IF 4.8) Pub Date : 2024-01-31 Manar Derhy, Yassine Taha, Asmae El-Bahi, Yassine Ait-Khouia, Mostafa Benzaazoua, Rachid Hakkou
Calcium minerals are the main constituents of most sedimentary phosphate ores. These include apatite, calcite, and dolomite. Owing to the similar surface properties of these minerals, their selective flotation is notably intricate. Fatty acids are the mostly employed collectors in calcium minerals flotation. The performance of fatty acids and their selectivity towards minerals depends on their hydrocarbon
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The role of enhanced desliming and gravity separation as a precursor to flotation in the upgrading of cassiterite from tailings Miner. Eng. (IF 4.8) Pub Date : 2024-01-28 M.E. Amosah, M. Yvon, J. Zhou, K.P. Galvin
Due to the depletion of high-grade mineral deposits, there is increasing demand for the reprocessing of minerals from tailings dams. However, tailings reprocessing can present several challenges due to the presence of slimes: reduced selectivity and kinetics resulting in low recovery, excessive entrainment, and high reagent consumption. This research focussed on a previously intractable problem, the
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To flange or not to flange? Miner. Eng. (IF 4.8) Pub Date : 2024-01-28 Ralph van Rijswick, Serhat Onol, Renato Oliveira, Bjorn Dierx
Patent filing of and original research into the effect of flanges on HPGR rollers dates back to the early 90s. Only in recent years has this concept been re-introduced and it has received a lot of attention. Some more recent reports show increased throughput and reduced energy consumption, but the impact of a flange on the product particle size distribution (PSD) seems to be only present at the coarse
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Technological and economic considerations for the application of combined microwave assisted comminution and multi-sensor ore sorting Miner. Eng. (IF 4.8) Pub Date : 2024-01-26 X. Tian, J. Forster, E.R. Bobicki
Increasing pressure to develop more energy efficient and sustainable technologies has led to a recent surge in interest in innovative processes such as microwave-assisted comminution and ore sorting. In a comminution circuit, there are several levers that can be taken advantage of, such as the ore competency, feed grade, and particle size. By varying these process parameters, the operations can achieve
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REE recovery and hydrochar production from a hyperaccumulator by microwave-assisted hydrothermal carbonization Miner. Eng. (IF 4.8) Pub Date : 2024-01-26 Shiyu Li, Wencai Zhang
Phytomining is a promising approach that uses hyperaccumulators to extract rare earth elements (REEs) from various substrates. Nonetheless, the processing and reutilization of REE hyperaccumulators after hyperaccumulation remains a challenge. In this study, the effects of acid type (HCl, H2SO4, and HNO3) and acid concentration (0.01 mol/L-0.2 mol/L) on REE extraction from grass leaves (GL) during microwave-assisted
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Reactive synthesis of ferrous sulfide using elemental iron/pyrite ore: Kinetics study and application Miner. Eng. (IF 4.8) Pub Date : 2024-01-25 Weilun Qian, Huibin Zhang, Jiankang Tan, Wenyu Feng, Huazhen Cao, Guoqu Zheng