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Reverse flotation of iron ore by a new ternary collector-frother reagent: Applications through flotation experiments Miner. Eng. (IF 4.9) Pub Date : 2025-01-30 Michelle Lacerda Sales Marques, Lucas Andrade Silva, Letícia Maia Prates, Alexandre Moni Pereira, Julio Cesar Guedes Correia, Inna V. Filippova, Lev O. Filippov
The reverse flotation of iron ore with etheramine collectors and starch as depressant is widely implemented industrially but has severe shortcomings in dealing with complex lithologies and reclamation of slimes and tailings. Previously, we explored the adsorption of a new ternary collector reagent based on a mixture of etheramine, amidoamine and a frother. FTIR band intensities point to favorable adsorption
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Ferronickel recovery from 2-stage thermally treated ultramafic nickel sulfide concentrate Miner. Eng. (IF 4.9) Pub Date : 2025-01-28 Wei Lv, Brian Makuza, Samuel Marcuson, Manqiu Xu, Frederick D. Ford, Mansoor Barati
Nickel (Ni) is a critical metal facing a sharp increase in demand as it is a key ingredient in clean energy technologies such as lithium-ion batteries (LIBs) for electric vehicles (EVs). The gradual depletion in the active high-grade Ni sulfide deposits has garnered more attention toward Ni extraction from low-grade ultramafic Ni sulfides. Although the low-grade ultramafic sulfide deposits have the
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Evaluating cryogenic grinding variables to maximize valuable metal liberation from spent lithium-ion batteries Miner. Eng. (IF 4.9) Pub Date : 2025-01-27 F. Mulet-Mery, Jorge Uribe, J. Valenzuela-Elgueta, Cristian Serrano
This study explores the liberation of valuable metals from spent Lithium Ion Batteries (LIBs) following cryogenic grinding with varying grinding times, frequencies, and particle sizes. We characterize the physicochemical changes in lithium metal oxide particles focusing on the mineral phases, semi-quantification, and liberation of Co, Ni, and Mn. A total of 18 cathodic material samples underwent cryogenic
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A review of phyllosilicate minerals in flotation: Mechanisms of deleterious effect and mitigation method Miner. Eng. (IF 4.9) Pub Date : 2025-01-27 Guohua Gu, Jianyu Chen, Mengchi Guo, Yanhong Wang
High content of phyllosilicate minerals has a deleterious effect on the mineral flotation process. In clay science, with increasing the solid concentration, phyllosilicate mineral particles associate into different network structures, according to the relative potentials and positions of basal faces and edge faces, which plays a dominant role in the flow behaviour of pulp. In this paper, the effect
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Enhanced vibration dewatering to facilitate efficient disposal process for waste fine flotation tailings Miner. Eng. (IF 4.9) Pub Date : 2025-01-24 Miao Pan, Tong Xu, Jiawang Lu, Chenlong Duan, Wei Shi, Long Huang, Yidong Shen, Jiale Yuan, Jinpeng Qiao, Haishen Jiang
Waste fine flotation tailings (WFFTs) constitute a type of ore slurry consisting of fine tailing particles and beneficiation wastewater produced in the mineral flotation process. It can lead to resource wastage and ecological pollution due to irrational disposal process. This study aimed at recovering the useful building materials and water resources via reprocessing WFFTs by classification, magnetic
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Review of beneficiation techniques and new thinking for comprehensive utilization of high-phosphorus iron ores Miner. Eng. (IF 4.9) Pub Date : 2025-01-21 Guangheng Ji, Xu Gao, IL Sohn, Shigeru Ueda, Wanlin Wang
As the world faces the rapid depletion of high-grade iron ore reserves, the abundant high-phosphorus iron ore deposits present significant potential for future exploitation. These ores, rich in the valuable elements of iron and phosphorus, necessitate the development of practical processes for upgrading iron and recovering phosphorus. Consequently, to promote the foundation and application research
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Corrigendum to “Influence of calcination conditions on deep eutectic solvents (DES) leaching efficiency of light rare earth elements in bastnasite ore” [Miner. Eng. 220 (2025) 109087] Miner. Eng. (IF 4.9) Pub Date : 2025-01-13 S. Samet Kaplan, Cisem Celik Kurtulan, Sebahattin Gurmen, Gokhan Orhan, M. Seref Sonmez
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Preparation of cryolite from overhaul slag by low-temperature sulfuric acid roasting and water leaching Miner. Eng. (IF 4.9) Pub Date : 2025-01-10 Liangmin Dong, Fen Jiao, Wei Liu, Hongbin Ling
Resource disposal of overhaul slag is an urgent problem in aluminum industry. This paper innovatively proposed the synthesis of cryolite by low temperature H2SO4 roasting and water leaching process. Low temperature H2SO4 roasting can effectively volatilize fluoride such as Na3AlF6, CaF2 and NaF into the flue gas in the form of HF for recovery, and aluminum compounds (Al2O3, Na3AlF6) are converted into
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A workflow to create geometallurgical clusters without looking directly at geometallurgical variables Miner. Eng. (IF 4.9) Pub Date : 2025-01-08 F.G.F. Niquini, I.A. Andrade, J.F.C.L. Costa, V.M. Silva, R.S. Marcelino
Cluster analysis is frequently used to help in individualizing stationary domains. Its application in creating geometallurgical clusters can follow two approaches. The first utilizes geometallurgical test variables in cluster analysis to define domains based on the geometallurgical database. This approach, common in mining, often lacks sufficient data for accurate 3D modelling. The second approach
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SAG mill ball diameter semi-theory based on pebble fracture strength and DEM validation Miner. Eng. (IF 4.9) Pub Date : 2025-01-06 Yunxiao Li, Qingfei Xiao, Guobin Wang, Boyuan Sun, Chao Zheng, Saizhen Jin, Qingkai Wang
The semi-autogenous grinding (SAG) mill, widely used in large mineral processing plants, is known for its high throughput and production efficiency. However, an accumulation of pebbles can lead to a reduction in throughput and an increase in power consumption during the grinding process. This study investigates the strength of pebbles in conjunction with Davis’ theory of ball movement, considering
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Study of alkaline hydrometallurgical process for stibnite flotation tailings reprocessing: Semi-pilot antimony leaching Miner. Eng. (IF 4.9) Pub Date : 2025-01-04 Seydou Dembele, Ata Akcil, Sandeep Panda
Nowadays, tailings management and scarcity of raw materials are both topics that are much discussed in the mining sector. Recycling is therefore a sustainable method of extracting metals from secondary resources for tailings management and the supply of critical metals such as antimony. Alkaline leaching was carried out using mixture of sodium sulfide (Na2S) and sodium hydroxide (NaOH). Optimisation
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Resource utilization of phosphate tailings by calcination and leaching with dilute H3PO4 solution Miner. Eng. (IF 4.9) Pub Date : 2025-01-02 Shengyang Ding, Lu Yin, Tao Zhang, Li Lv, Wenxiang Tang, Shengwei Tang
Phosphate tailing is a solid waste from the process of phosphate resource utilization. It is rich in phosphorus, calcium, and magnesium. Exploring a profitable comprehensive utilization route of phosphate tailings is crucial for the disposal of phosphate tailings. A utilization route of P, Ca and Mg in phosphate tailings was proposed in this work. Phosphate tailings were first calcinated and leached
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Amidoxime collectors: Lead-free flotation performance and adsorption mechanism in the separation of wolframite, quartz and calcite Miner. Eng. (IF 4.9) Pub Date : 2024-12-31 Guangsheng Zeng, Wei Weng, Shuiping Zhong, Xiaopeng Chi, Jiaozhong Cai, Wen Tan, Junnan Chen
The novel amidoxime-based collectors, 4-pyridylamidoxime (PA), 3-ethyl-4-pyridylamidoxime (EPA), and 3-methyl-5-tert-butyl-4-pyridylamidoxime (MBPA), were introduced in the lead-free flotation separation of wolframite from quartz and calcite. Compared with PA, EPA, and the traditional collector benzohydroxamic acid (BHA), MBPA exhibited a better separation and recovery capacity to wolframite ore. 4
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Challenges associated with the recovery of Co– and As-bearing minerals from aged mine tailings Miner. Eng. (IF 4.9) Pub Date : 2024-12-31 Samuel Teillaud, Lucie Coudert, Yassine Ait-Khouia, Mostafa Benzaazoua, Marie Guittonny, Baptiste Laubie, Marie-Odile Simonnot
The global demand for cobalt (Co), essential for “clean” energy technologies, has raised interest in identifying secondary sources, including mine tailings. This study evaluates the potential of historic silver (Ag) mine tailings in Ontario, Canada, as a secondary Co source and for arsenic (As) mitigation, offering economic and environmental benefits. Physico–chemical and mineralogical characterization
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Correlation between the kinematic properties of carrier particle bubbles and their particle entrainment phenomena Miner. Eng. (IF 4.9) Pub Date : 2024-12-28 Xiaofeng Li, Xuan Wu, Junbiao Wang, Hui Dong, Zhengyang Wang
During froth flotation, minerals enter the concentrate either through true flotation or mechanical entrainment. These two processes occur simultaneously and they determine the efficiency and selectivity of the process. This study proposes use of a bubble surface load value to quantitatively characterize the level of particle adhesion on bubbles. A visual experimental platform was constructed using
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Microencapsulation of Acidithiobacillus thiooxidans in a biopolymeric matrix of gum arabic and whey protein using complex coacervation and freeze drying Miner. Eng. (IF 4.9) Pub Date : 2024-12-25 Angel Manuel Cabrales-González, Diola Marina Núñez-Ramírez, María Adriana Martínez-Prado, Luis Medina-Torres, Walfred Rosas-Flores, Octavio Manero
Acidithiobacillus thiooxidans is a microorganism of great interest in biohydrometallurgical processes, as it is potentially capable of treating complex, low-grade sulfur minerals. However, there are concerns in the metallurgical industry regarding microbial manipulation due to problems related to cellular integrity, metabolic activities, genetic stability, and long-term maintenance of microbial cultures
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Surface electron transfer promoted by Peroxymonosulfate oxidant enhances bioleaching of arsenic-containing gold ore Miner. Eng. (IF 4.9) Pub Date : 2024-12-24 Jiayu Xin, Jiahong Li, Xi Zhao, Changliu He, Lei Zheng, Aijun Zhang, Ranting Tao, Xu Zhang
Improving the efficiency of leaching arsenic from arsenic-containing gold ores is still a problem that needs to be solved urgently by traditional biological oxidation method. In this work, the effect of oxidant on mineral leaching and the change of arsenic ion valence during biological oxidation were investigated in detail. The results showed that when 5 g/L Peroxymonosulfate(PMS) was added on the
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Efficient resource utilization of gypsum in the flotation separation of apatite from calcite Miner. Eng. (IF 4.9) Pub Date : 2024-12-21 Shengzong Lan, Liuyang Dong, Peilun Shen, Haoran Su, Zhengchang Shen, Dianwen Liu
A large amount of the industrial byproduct gypsum can harm the environment, so developing an innovative approach for the utilization of gypsum is highly important. In this study, gypsum was employed to increase the flotation separation efficiency of apatite from calcite. The micro-flotation test revealed that sodium oleate could not separate the two minerals without a depressant. At pH 9, following
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The mechanism of selective dispersion between micro-fine titanaugite and ilmenite particles caused by acid surface pretreatment in pulp Miner. Eng. (IF 4.9) Pub Date : 2024-12-21 Yusheng Du, Qingyou Meng, Chong Han, Zhitao Yuan, Lixia Li, Jiwei Lu, Ting Liu
In this work, acid surface pretreatment improved the selective dispersion between micro-fine titanaugite (−19 μm) and ilmenite particles in pulp. Microflotation experiments showed that as the mass percentage of micro-fine titanaugite in mixed ore increased, the separation index in ilmenite flotation decreased due to micro-fine titanaugite adsorbed on ilmenite surfaces, while acid surface pretreatment
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Enhancement mechanisms of tetrapotassium pyrophosphate on flotation separation of pyrite from fine serpentine Miner. Eng. (IF 4.9) Pub Date : 2024-12-21 Dezhi Liu, Yangyang Huai, Rui Liao, Binbin Li, Lingming Zeng
During the serpentine-contained sulfide ores flotation process, the presence of serpentine slimes will intensively deteriorate the flotation performance of sulfide ores due to hetero-coagulation. To handle this issue, tetrapotassium pyrophosphate (TKPP) was used as a novel depressant in this work. Micro-flotation results revealed that the addition of 5 g/L fine serpentine particle (−10 µm) caused a
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Avenues of resources efficiency enhancement in iron and steel production Miner. Eng. (IF 4.9) Pub Date : 2024-12-20 T.C. Alex, Rashmi Singla, D.P. Sahoo, K.D. Mehta, Sanjay Kumar
Ironmaking- steelmaking is a material and energy intensive process with a resource efficiency of only ∼ 33 %. Resource efficiency enhancement requires recovering the wasted/unutilized material by-products and the energy associated with them in various forms. This review attempts to identify the material leakages and energy losses at each step of steelmaking (from iron ore mining) and explores approaches
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Electrochemical and interfacial studies on the oxidation of pyrite at high altitude area Miner. Eng. (IF 4.9) Pub Date : 2024-12-19 Yan Miao, Guangke Ye, Binbin Li, Hong Zheng, Guofan Zhang
Pyrite is the most abundant metallic sulphide ore in nature and has semiconducting properties that induce electrochemical reactions. Scholars have conducted many related electrochemical studies, but studies on the unconventional environment with low dissolved oxygen (DO) in high altitude area are relatively few. In this study, we have designed and built a high altitude simulation test platform, investigated
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Effect of grinding media, time, and particle size on coal particle shape: Interpretation of aspect ratio-modified roundness for products of ball and rod mills Miner. Eng. (IF 4.9) Pub Date : 2024-12-18 Guihua Zheng, Zhe Yang, Kangkang Sun, Hongguang Lv, Liqiang Ma
Particle shape plays a crucial role in mineral processing and is largely influenced by grinding. However, traditional descriptions of particle shape using circularity are often inadequate to reveal the grinding mechanism. This study applied a new aspect ratio (AR)-modified roundness to quantify particle shape. The shape of anthracite particle as a function of different grinding conditions was analyzed
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Leaching and recovery of rare earth elements, copper, nickel, silver and gold from used smartphone circuit boards Miner. Eng. (IF 4.9) Pub Date : 2024-12-18 Salmata Diallo, Lan-Huong Tran, Dominic Larivière, Jean-François Blais
Printed circuit board (PCB) assemblies constitute a concentrated source of valuable metals. This study evaluates the performance of a complete hydrometallurgical process for extracting and recovering rare earth elements (REE), Cu, Ni, Ag and Au from leachates produced from PCB found in smartphones via four selective leaching steps. In a REE leachate ([Dy] = 43 mg/L, [Gd] = 5 mg/L, [Nd] = 266 mg/L,
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Low-temperature biomass pyrolytic reduction and recovery of iron oxides from red mud Miner. Eng. (IF 4.9) Pub Date : 2024-12-18 Taotao Sun, Mian M. Ahson Aslam, Guangquan Chen, Changsheng Peng
In this study, the pyrolytic reduction of iron oxides contained in red mud using biomass-derived reductive gases was explored. Wheat straw and rice husk were evaluated together with activated carbon and graphite for their effectiveness in converting iron oxides to magnetite. Thermodynamic analyses using thermogravimetric-mass spectrometry (TG-MS) demonstrated that CO, H2, CH4, and biochar could effectively
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Effects of combined alkalinity and ultrasonication on element release and structural alteration in EAF slag Miner. Eng. (IF 4.9) Pub Date : 2024-12-18 Recep Kurtulus, Mahtab Akbarzadeh Khoei, Marco Cantaluppi, Juho Yliniemi
This study investigated electric arc furnace (EAF) slag dissolution in varying NaOH solutions (10 M, 0.1 M, and 0.01 M) and assessed the impact of ultrasonication on enhancing element release. After conducting dissolution tests based on 1/100 g/mL as the solid-to-liquid ratio, ICP-OES analysis was used in determining the dissolved elemental concentrations, while XRD, FTIR, BET, and XPS measurements
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Clean and short flowsheet of recovering ultrafine ilmenite by high gradient magnetic separation coupling with magnetic fluid Miner. Eng. (IF 4.9) Pub Date : 2024-12-17 Xiayu Zheng, Xingzhe Li, Li Du, Sheng Zhou, Yuhua Wang, Dongfang Lu
Ultrafine ilmenite minerals (−0.019 mm) in vanadic titanomagnetite ore deposit in Panxi area of China were generally separated by hydraulic classification and discharged into tailings as these fine minerals will severely deteriorate subsequent flotation process, resulting in a great waste of titanium resources. Methods combining high gradient magnetic separation (HGMS) followed by flotation were usually
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Mineral liberation by 3D X-ray microtomography and SEM-based image analysis in low-grade iron ores with different mineralogy and texture Miner. Eng. (IF 4.9) Pub Date : 2024-12-17 Daniel Uliana, Carina Ulsen
X-ray microtomography image analysis has demonstrated a great potential in in three-dimensional and non-destructive mineral samples characterization. Therefore, there is a drive from the international scientific community to develop new methodologies for three-dimensional image analysis, with the commitment to seek increasingly accurate results and better predictability in mineral processing. The main
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A multi-task model for mill load parameter prediction using physical information and domain adaptation: Validation with laboratory ball mill Miner. Eng. (IF 4.9) Pub Date : 2024-12-13 Yiwen Liu, Gaowei Yan, Shuyi Xiao, Fang Wang, Rong Li, Yusong Pang
Accurate prediction of mill load parameters is crucial to improving grinding efficiency and saving energy. Traditional prediction models have challenges such as poor interpretability, low prediction efficiency and differences in data distribution. This study innovatively proposed a multi-task prediction model that integrates physical information and domain adaptation. By constructing a physical-data-driven
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Enhancing multi-sphere clump informed by particles geometry via correcting dynamic properties and mechanical interactions in DEM Miner. Eng. (IF 4.9) Pub Date : 2024-12-12 Xuanquan Chen, Shunchao Qi, Yuntao Wang, Yonghao Liu, Jiawen Zhou, Xingguo Yang
Multi-sphere clumps are favored to approximate irregular particles in discrete element model (DEM) due to algorithmic simplicity and efficiency, which, however, leads to approximation errors in dynamical properties and contact forces for motion integration. The latter becomes substantial when cost-effective DEMs are pursued with an acceptable minimum number of subspheres per clump (SPC). This study
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QSAR study on molecular design and flotation prediction of collectors for copper sulfide Miner. Eng. (IF 4.9) Pub Date : 2024-12-12 Wei Xiong, Wenfei Wang, Hong Zhong, Xin Ma, Shuai Wang
The development of flotation collectors is usually time-consuming and costly. Quantitative structure–activity relationship (QSAR) is one of the most powerful methods for designing and modifying molecules. Introducing QSAR into the development of collectors can significantly compensate for the above shortcomings. The molecular structure, conceptual density functional theory (CDFT) and electrostatic
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First full-scale cHGMS separator for separation of ilmenite Miner. Eng. (IF 4.9) Pub Date : 2024-12-12 Bohua Zhang, Xiangjun Ren, Qiwei Lai, Fan Yi, Luzheng Chen
Our previous research on centrifugal high gradient magnetic separation (cHGMS) has fully confirmed its effectiveness to improve the separation selectivity of HGMS process, but they were confined in pilot-scale investigations. In this work, the first full-scale CenMag-300 cHGMS separator was used to clean a primary ilmenite concentrate, which was produced from a pulsating HGMS (PHGMS) roughing process
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Flotation separation of homogenized fluorite and calcite using sodium silicate and AlCl3 as a combined depressant Miner. Eng. (IF 4.9) Pub Date : 2024-12-12 Xu Yang, Yubiao Li, Jinfeng Chen, Peng Chen, Shaoxian Song
Effective flotation separation of fluorite and calcite is a critical challenge due to their comparable physicochemical characteristics and surface iso-transformation. The effects of sodium silicate (SS) and Al3+ on the flotation separation of homogenized fluorite and calcite were investigated based on flotation experiments and various measurements such as Zeta potential, scanning electron microscopy
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Investigation into sliding behavior of bubbles on a hydrophilic surface containing discretely distributed hydrophobic patches Miner. Eng. (IF 4.9) Pub Date : 2024-12-09 Zhongren Wu, Ai Wang, Siyuan Yang, Yijun Cao, Chao Li
Flotation of coarse particles with poor mineral liberation, aiming at gangue rejection at early stage, has attracted great attentions. Bubble detaching probability ultimately determines the coarse particle separation efficiency. To date, the bubble detaching behavior from the surface of coarse particles with poor liberation remains unclear. In this study, three sizes of bubbles (650 μm, 900 μm and
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Direct flotation recovery of malachite using a novel N-substituted hydroxamic acid: Adsorption mechanism and DFT calculation Miner. Eng. (IF 4.9) Pub Date : 2024-12-09 Kangjing Wu, Yuxi Lu, Shuai Wang, Xin Ma, Hong Zhong
The weak collection ability of conventional benzohydroxamic acid (BHA) impedes its widespread application in the direct flotation of copper oxide minerals. Conversely, octyl hydroxamic acid (OHA) with enhanced hydrophobicity demonstrated superior collecting ability while exhibiting weak selectivity in malachite flotation. In order to achieve a balance between collecting ability and selectivity, we
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A comprehensive multiscale review of shaft furnace and reformer in direct reduction of iron oxide Miner. Eng. (IF 4.9) Pub Date : 2024-12-07 Masih Hosseinzadeh, Norollah Kasiri, Mehran Rezaei
The direct reduction of iron (DRI) process plays a pivotal role in the ironmaking and steelmaking industry and has emerged as a promising solution for reducing CO2 emissions. This intricate process spans metallurgy and chemical engineering, encompassing multiple scales (macroscale, mesoscale, microscale, nanoscale) and various reaction systems, including catalytic gas–solid (reformer) and non-catalytic
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The synthesis of a novel flotation collector for bastnaesite, 5,5′-methylenedisalicylic acid, based on salicylhydroxamic acid molecular structure Miner. Eng. (IF 4.9) Pub Date : 2024-12-06 Peng Liu, Jianhua Kang, Weidi Zhang, Wei Sun, Mengjie Tian
In oxide mineral flotation, salicylhydroxamic acid (SHA) is a frequently employed collector renowned for its commendable selectivity. Nevertheless, SHA manifests an insufficient collecting efficacy in bastnaesite flotation. In response, the paper synthesized a novel collector, 5,5′-methylenedisalicylic acid (MDSA), by tethering two SHA molecules with a methylene group. In the flotation separation of
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Ex-situ mineral carbonation process challenges and technology enablers: A review from Australia’s perspective Miner. Eng. (IF 4.9) Pub Date : 2024-12-06 Dia Milani, Robbie McDonald, Phillip Fawell, Haftom Weldekidan, Graeme Puxty, Paul Feron
While reacting CO2 with sub-surface mafic/ultramafic phases potentially captures greenhouse gas emissions, low porosity and very slow kinetics makes this problematic. Mineral processing tailings and mining wastes offer distinct particles with exposed surfaces that enhance reactivity, and Australia’s mining sector has numerous prospective tailings streams. Passive carbonation of such tailings is known
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Dynamics of gas dispersion in a rising bubble plume in presence of surfactant Miner. Eng. (IF 4.9) Pub Date : 2024-12-05 Abdullaziz Glabe Zakari, Mohammad Mainul Hoque, Peter Ireland, Geoffrey Evans, Subhasish Mitra
Understanding dispersion behaviour of bubbles emitting from a sparger is a critical element of mineral flotation process. This aspect was investigated in the present study involving a bubble plume in a semi-batch rectangular column in the presence of an anionic surfactant. First, high-speed imaging was used to visualise the bubble plume behaviour at different air flow rates (0.1 – 0.5 L/min). An image
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Extraction of precious metals from waste printed circuit boards using alkaline ferricyanide solutions: An exploratory study Miner. Eng. (IF 4.9) Pub Date : 2024-12-05 Huan Li, Elsayed Oraby, Jacques Eksteen, Wenhao Xie, Jing Gu, Haoran Yuan
Precious metals leaching using conventional processes presents challenges due to the use of toxic, expensive, and complex leaching systems, such as cyanidation, thio-systems, and halide systems comprising both lixiviant and oxidant. The present study employed a simple leaching system of alkaline ferricyanide solution with dual functions of leaching and oxidization, to extract precious metals from waste
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New insights into the surface chemical properties of serpentine and flotation of pyrite using xanthomonas campestris as a novel selective serpentine depressant: Experimental and DFT investigation Miner. Eng. (IF 4.9) Pub Date : 2024-12-05 Levie Mweene, Govinda Prasad Khanal, Emmanuel Etim
The flotation separation of pyrite (Py) from serpentine (Spt) was studied using xanthamonas campestris (XC) as a novel Spt depressant. The adsorption of XC onto Spt and Py was observed to decrease with increase in pH attesting to increased repulsion between the negatively charged carboxylate portion of XC and the increased negativity of the mineral surface. However, the polysaccharide adsorption onto
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Mechanism of synergistic effect of aluminum ions and water glass on talc flotation depression Miner. Eng. (IF 4.9) Pub Date : 2024-12-05 Tao Long, Qubing Li, Wei Yang, Sha Deng, Xiangyu Peng, Jianping Jin
Talc, a prevalent gangue mineral in sulfide ores, poses a significant challenge in the flotation process due to its good floatability. The application of water glass as a standalone reagent has been found to be less effective in suppressing talc. In this study, we delve into the synergistic inhibitory mechanism of Al3+ in conjunction with water glass on talc through a series of micro-flotation tests
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A new mixture of anionic collectors for improvement of apatite floatability Miner. Eng. (IF 4.9) Pub Date : 2024-12-03 Saeed Abdollahi, Sajjad Afraei, Akbar Mehdilo, Reza Kouchakzadeh, Mehdi Irannajad
Flotation is the most essential method for the concentration of phosphate reserves and, hence, the production of apatite concentrate. With the reduction of high-grade reserves and the necessity of exploiting low-grade phosphate ores, many efforts have been made to use different chemical reagents alone and their combinations as collectors for apatite flotation and achieving high-quality concentrates
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Advancements in the extraction of niobium and tantalum: Innovative strategies in hydrometallurgical processes Miner. Eng. (IF 4.9) Pub Date : 2024-11-29 Darwin Michell Cheje Machaca, Thamyres Cardoso de Carvalho, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa
This article presents a comprehensive analysis of the challenges and advancements in the extraction of niobium (Nb) and tantalum (Ta), focusing on global production and the growing demand for strategic and critical metals. The extraction of these metals from their primary and secondary resources is carried out through well-known metallurgical techniques, based on the use of hydrofluoric acid in the
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Sustainable reprocessing of Pb–Zn mine tailings through froth flotation for resource recovery and environmental remediation in abandoned mining regions Miner. Eng. (IF 4.9) Pub Date : 2024-11-29 Abdessamad Khalil, Yassine Ait-khouia, Hamza Beniddar, Mustapha El Ghorfi, Rachid Hakkou, Yassine Taha, Mostafa Benzaazoua
The abandoned Touissit-Bou Beker mining district has accumulated tens of millions of tons of tailings, stored without environmental safeguards. Due to the limited ore processing method, the tailings exhibit a significant zinc (2 wt%) and lead (0.3 wt%) content, mainly buried in carbonate minerals. These tailings pose environmental concerns but also offer economic opportunities. This study investigated
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Exploring the influence of surface roughness on the interface phenomenon between an air bubble and a glass bead: An experimental and theoretical investigation Miner. Eng. (IF 4.9) Pub Date : 2024-11-29 Mianyan Yang, Zhijun Zhang
The effect of surface roughness on the detachment between the bubbles and the glass beads (soda-lime) was comprehensively investigated. Glass beads with dimensions of −1.20 + 1.12 mm were acid etched to achieve varying degrees of surface roughness, followed by silanation reactions conducted for different immersion times. The characterization of surface roughness was conducted using a ContourGT-K 3D
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Application of inclined channels in the hydrodynamic classification of minerals by particle size – Extension to coarser separations Miner. Eng. (IF 4.9) Pub Date : 2024-11-29 J.B. Starrett, K.P. Galvin
A REFLUX™ Classifier was used to classify a silica feed (0–710 µm) based on particle size. Split Fluidisation was used to generate remarkably sharp separations involving solids throughputs of up to 92 t/m2/h. This work builds on the previous study by Starrett and Galvin (2023) but with a focus on coarser separations at higher throughputs. As the separation size increased, there was increasing misplacement
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Model investigation of a dry vibrated fluidized sinkhole system for separating coarse particles based on density Miner. Eng. (IF 4.9) Pub Date : 2024-11-29 Dusan Ilic, Aleksej Lavrinec, Kevin P. Galvin
A simulation model of a dry, vibrated, fluidized medium (VFM) with sinkhole arrangement was developed and used to investigate the separation of relatively dense, coarse particles. The objective of the new model was to emulate a most unusual experimental result involving the sinkhole arrangement, separation densities much higher than the bulk density of the fluidized medium. The VFM was simulated using
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Flotation separation of molybdenite from talc using carrageenan as depressant Miner. Eng. (IF 4.9) Pub Date : 2024-11-28 Chao Li, Chao Wang, Fei Wu, Guangli Zhu, Yijun Cao, Shaohang Cao
Due to the strong natural floatability of molybdenite and talc, conventional flotation depressants are difficult to separate these two minerals. As a common depressant, starch has a strong inhibitory effect on both minerals (Castro et al., 2016), while sodium carboxymethyl cellulose has a weak inhibitory effect on both minerals (Chen et al., 2024). Therefore, selecting a proper depressant is the key
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New insights into the significant drop of molybdenite flotation Recovery: The Overlooked oxidation of MoS2 basal facet Miner. Eng. (IF 4.9) Pub Date : 2024-11-26 Dashi Lei, Yuen Yan, Songbo Ma, Xiaoliang Zhang, Xiangyu Peng, Yubin Wang, Yangge Zhu
The oxidation of molybdenite in water-oxygen system adversely affects the flotation recovery. However, previous studies primarily focused on the oxidation of MoS2 edge surfaces, neglecting the oxidation of basal facets, which constitute a larger proportion of the overall surface area. In this work, we systematically investigated the oxidation behavior of the molybdenite base surface and explored the
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Mixed surfactants with solubilization behaviors: Separation of feldspar and quartz by self-assembly flotation Miner. Eng. (IF 4.9) Pub Date : 2024-11-26 Xuyang Fan, Tingting Xiao, Chenyu Zhou, Haoran Wang, Zhiquan Pan, Hanjun Wu, Hong Zhou
This study designed a mixed surfactant with solubilization behavior for selective flotation separation of feldspar and quartz. By optimizing the compounding ratio and dosage of reagents, the optimal mixed surfactants, dodecylamine (DDA), sodium dodecyl sulfate (SDS), and dodecane with the concentrations of 1.75, 0.58, and 3.5 mmol/L, used in flotation separation of feldspar and quartz has the maximum
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Producing green rutile from secondary ilmenite via hydrogen reduction Miner. Eng. (IF 4.9) Pub Date : 2024-11-26 William Spencer, Don Ibana, Pritam Singh, Aleksandar N. Nikoloski
The use of coal for ilmenite reduction to produce synthetic rutile is widespread in industry. However, the carbon dioxide emissions associated with coal combustion pose significant environmental concerns. Alternative reductants such as hydrogen have the potential to promote environmentally friendly production of green rutile. This study aimed to assess the technical feasibility of reducing an Australian
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Data-driven strategies to optimise Ma’aden Barrick Copper Company (MBCC) flotation circuit − The power of visualisation and machine learning in data mining- Miner. Eng. (IF 4.9) Pub Date : 2024-11-25 T. Ncube, P. Olawoore, P. Maphosa, S. Mogashoa, F. AlJohani, M. Swanepoel
In this work, we present a case study demonstrating the application of Optimaviz, an advanced data analytics platform, in addressing the challenges of flotation optimization in the mining industry. The study utilizes historical data from the Jabal Sayid underground copper mine, operated by Ma’aden Barrick Copper Company (MBCC), a joint venture between Ma’aden and Barrick Corporations. Our findings
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The unexpected stability of froth structures formed with battery materials allow their characterization with x-ray computed tomography Miner. Eng. (IF 4.9) Pub Date : 2024-11-25 Tommi Rinne, Jukka Kuva, Rodrigo Serna-Guerrero
As a result of ongoing research on direct recycling of battery active materials, it was observed that the chemical environment in flotation operations can be manipulated to produce highly stable froths. Such unexpected behavior opened the possibility to characterize this type of metastable structures using imaging techniques such as x-ray computed tomography. In this article, a first successful three-dimensional
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Effect of monovalent, divalent and trivalent ions on the grinding efficiency of bentonite-containing ores Miner. Eng. (IF 4.9) Pub Date : 2024-11-25 JingJing Xu, Boris Albijanic, Nadia Kashif, Jacques Eksteen, Bogale Tadesse, Richard Alorro
Grinding efficiencies of bentonite-containing ores have been rarely investigated in the literature even though bentonite is found in various ores such as refractory and free-milling gold ores. In this work, the influence of the cation valency of grinding additives on the grinding behaviour of bentonite-containing ores has been studied. The results indicate that the presence of bentonite in the ore
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Influence of coagulants and flocculants dosing sequence on the dewaterability of oil sands mature fine tailings by pressure filtration Miner. Eng. (IF 4.9) Pub Date : 2024-11-19 Daowei Wang, Filipe S. Araujo, Dong Wang, Hanyu Zhang, Kaipeng Wang, Mingli Cao, Anthony Yeung, Qi Liu
Rapid and cost-effective dewatering of wet tailings is crucial for clean and sustainable production in mineral processing. In the process of dewatering oil sands mature fine tailings (MFT) through coagulation-flocculation followed by pressure filtration, we observed that the dosing sequence of coagulants and flocculants had a significant influence on dewatering efficiency. Employing two anionic commercial
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Oily-bubble and its typical applications in enhancing the separation and mass transfer processes: A review and perspectives Miner. Eng. (IF 4.9) Pub Date : 2024-11-19 Tianze Chen, Shengpeng Su, Shuo Chen, Yizhuang Wang, Yanfang Huang, Bingbing Liu, Hu Sun, Shuzhen Yang, Guihong Han
Oily-bubbles have significant advantages including a greater contact area, stronger selectivity and higher mass transfer rate compared to bubbles, which exhibit excellent industrial prospects in mineral processing, extraction metallurgy, wastewater treatment and other fields. In recent decades, extensive research has been conducted on the enhancement of separation and mass transfer processes by oily-bubbles
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Evolution law of plasma-induced fractures in porous media materials: A case study on coal samples Miner. Eng. (IF 4.9) Pub Date : 2024-11-19 Zhang Xiangliang, Lin Baiquan, Zhu Chuanjie, Yang Wei, Guo Chang, Zhong Lubin
Plasma based on electrical discharge has attracted extensive attention in various fields for cracking hard coal, yet the behavior characteristics of plasma channels and the evolution law of fractures in coal have not been investigated in depth. In this study, the evolution law of plasma-induced fractures in coal was revealed by means of physical experiments and numerical simulations. Moreover, the
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Autonomous residual monitoring of metallurgical digital twins Miner. Eng. (IF 4.9) Pub Date : 2024-11-18 Riku-Pekka Nikula, Antti Remes, Jani Kaartinen, Johanna Kortelainen, Tuomas Loponen, Jari Ruuska, Mika Ruusunen
The importance of digital twin maintenance has recently surfaced through findings from industrial applications. Changes in actual physical systems affect the resemblance between digital and physical twins, which can be seen in the continuously changing variation in model residuals. In this study, a method that autonomously updates itself is proposed for monitoring multivariate residuals. It is independent
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Enhancing durability and strength of concrete through an innovative abrasion and cement slurry treatment of recycled concrete aggregates Miner. Eng. (IF 4.9) Pub Date : 2024-11-17 Harish Panghal, Awadhesh Kumar
The increasing demand for sustainable construction materials has driven significant interest in utilizing recycled concrete aggregates (RCA). However, the mechanical performance and durability of RCA are often compromised due to the presence of residual mortar. This study explores an innovative surface treatment approach combining abrasion and cement slurry coating to improve the properties of RCA