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Effect of seawater and dissolved cations on scorodite synthesis via iron coprecipitation Miner. Eng. (IF 4.8) Pub Date : 2024-05-12 Wei Sung Ng, Miao Chen
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A methodology for phase characterization in pellet feed using digital microscopy and deep learning Miner. Eng. (IF 4.8) Pub Date : 2024-05-10 Thalita Dias Pinheiro Caldas, Karen Soares Augusto, Julio Cesar Alvarez Iglesias, Bernardo Amaral Pascarelli Ferreira, Richard Bryan Magalhães Santos, Sidnei Paciornik, Alei Leite Alcantara Domingues
This work proposes a new method for characterizing pellet feed, employing Deep Learning (DL) and Convolutional Neural Networks (CNNs). The main minerals in the composition of the studied pellet feed are hematite, magnetite, goethite, and quartz. Over time, several characterization methodologies have been developed that use Digital Microscopy and Image Analysis tools. The greatest difficulties in this
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Bubble shape in the prediction of terminal velocities in flotation Miner. Eng. (IF 4.8) Pub Date : 2024-05-10 Cesar O. Gomez, Miguel Maldonado
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Amplification in the Uncertainty of the Yield and Recovery for a Steady-State Mineral Separator calculated using the Two-Product Formula Miner. Eng. (IF 4.8) Pub Date : 2024-05-09 S.M. Iveson, K.P. Galvin
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New approach to reduce carbon emissions by hydrogen reduction of boron-bearing iron concentrate in a fluidized bed: Reduction kinetics and microstructure analysis Miner. Eng. (IF 4.8) Pub Date : 2024-05-08 Peiyu Li, Jianwen Yu, Yanjun Li, Peng Gao, Yuexin Han
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A comprehensive review on recent progress in beneficiation of Nb-bearing minerals /Nb ores Miner. Eng. (IF 4.8) Pub Date : 2024-05-03 Tian Congzhong, Zou Wenjie, Liu Fengyang, Lu Yuxin, Zhang Zhijun, Li Zhengyao
Mainly produced by Brazil and Canada, the global production of niobium (Nb) surpassed 79,000 tons in 2022. Among the 150 kinds of Nb-bearing minerals, pyrochlore, columbite and tantalite are the predominant primary sources. There are several challenges in Nb ores’ beneficiation, such as low abundance in earth crust (20 ppm), fine dissemination in primary ores, and the poor performance of amines collectors
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Evaluation of disodium carboxymethyl trithiocarbonate as a depressant reagent for chalcocite: An electrochemical approach Miner. Eng. (IF 4.8) Pub Date : 2024-05-03 Arait Montoya, Ivan Reyes, Roel Cruz, Isabel Lázaro, Néstor Castillo-Magallanes, Rogelio Flores, Israel Rodríguez
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Flotation performance and adsorption mechanism of α-hydroxyoctyl phosphinic acid to pyrochlore Miner. Eng. (IF 4.8) Pub Date : 2024-05-02 Hongling Wang, Hong Zhong, Fangxu Li, Qingbo Meng, Di Wu, Shuangke Li
The flotation performance and adsorption mechanism of α-hydroxyoctyl phosphinic acid (HPA) on pyrochlore were investigated through micro-flotation experiments, zeta-potential tests, contact angle measurements and XPS analysis. The flotation results demonstrated that, in comparison to N-hexadecylpropane-1,3-diamine (NHDA), HPA exhibited a comparable collecting ability for pyrochlore but displayed superior
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Enhanced chalcopyrite leaching by mechanical activation: New insights from microstructure Miner. Eng. (IF 4.8) Pub Date : 2024-05-02 Congren Yang, Yuxin Li, Zuyuan Tian, Wenqing Qin, Xueduan Liu, Xu Wang
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Behavior of froth in absence and presence of particles Miner. Eng. (IF 4.8) Pub Date : 2024-05-01 Stoyan I. Karakashev, Dilyana S. Ivanova-Stancheva, Nikolay A. Grozev, Kristina M. Mircheva
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Degradation of residual xanthates in mineral processing wastewater-A review Miner. Eng. (IF 4.8) Pub Date : 2024-04-29 Xingjie Wang, Miaoxin Chen, Liyuan Ma, Piia Juholin, Devin J. Sapsford
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Flotation separation of magnesite from dolomite with gellan gum as depressant and its depression mechanism Miner. Eng. (IF 4.8) Pub Date : 2024-04-29 Long Wang, Zongxu Li, Hao Zhang, Lingyun Huang, Yangge Zhu, Fuping Li
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Investigation of leaching of nickel sulfide flotation tailings to recover valuable metals Miner. Eng. (IF 4.8) Pub Date : 2024-04-29 Emmanuel Atta Mends, Angela Manka Tita, Shokrullah Hussaini, John Samuel Thella, Lei Pan, Pengbo Chu
The global transition towards renewable energy, driven by low-carbon theories and technologies, has resulted in an increasing surge in the demand for critical and unique elements, of which nickel (Ni) and copper (Cu) are encompassed. In this investigation, using acid leaching, the recovery of such elements from polymetallic tailings to supplement conventional extraction processes was studied. The effective
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An automated mineralogy derived criterion for clustering ore samples for mineral liberation studies Miner. Eng. (IF 4.8) Pub Date : 2024-04-27 Rodrigo Fina Ferreira, Rosa Malena Fernandes Lima
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Continuously compressing crushing towards a dry processing method, a testing for graphite ore Miner. Eng. (IF 4.8) Pub Date : 2024-04-27 Niina Paasovaara, Samuel Hartikainen, Sirpa Peräniemi, Hannu Kuopanportti, Shenghong Yang
In this study the comminution methods of graphite bearing ore were compared by using five different crushing methods, namely a jaw crusher, a roll crusher, uniaxial compression tests, and a new type of continuously compressing crushers. These new continuously compressing crushers were available in laboratory and pilot scales. The particles in the + 1700 µm size class produced by continuously compressing
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Review of the effects of coal properties and activation parameters on activated carbon production and quality Miner. Eng. (IF 4.8) Pub Date : 2024-04-27 William Spencer, Gamini Senanayake, Mohammednoor Altarawneh, Don Ibana, Aleksandar N. Nikoloski
Activated carbon (AC) products are valuable for adsorption applications due to their high internal pore volume, surface area, surface functionality and strong adsorbent properties, which allow the capture of various ions and impurities in many applications, including precious metals recovery, water treatment, and gas purification. This review found that most of the world's AC is derived from bituminous
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Effects of 1,2-diaminopropane on the formation of chelated copper on chrysocolla surfaces and its response to flotation Miner. Eng. (IF 4.8) Pub Date : 2024-04-27 Rong Peng, Haoxiang Wang, Zhicong Wei, Jianjun Fang, Xiaolin Zhang, Peilun Shen, Dianwen Liu
In this study, the effect of 1,2-diaminopropane (1,2-DAP) on the formation of chelated copper on chrysocolla surfaces and its response to flotation was investigated. The results showed that 1,2-DAP effectively activates chrysocolla. Micro-flotation test revealed that using 50–70 mg/L of 1,2-DAP as an activator and 1.8 × 10 mol/L of sodium isoamyl xanthate (SIAX) as a collector increased chrysocolla
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Control of heap leach piles using deep reinforcement learning Miner. Eng. (IF 4.8) Pub Date : 2024-04-26 Claudio Canales, Simón Díaz-Quezada, Francisco Leiva, Humberto Estay, Javier Ruiz-del-Solar
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Co-processing of e-waste with natural resources and their products to diversify critical metal supply chains Miner. Eng. (IF 4.8) Pub Date : 2024-04-25 I.M.S.K. Ilankoon, R.A.D.P. Dilshan, Nimila Dushyantha
E-waste generation has been exponential due to technological advancements, urbanisation and modern lifestyles, reduced replacement intervals of consumer electronics, lack of design-for-environment components in electrical and electronic equipment, lack of repairs and high costs of repairs. 62 million tonnes of e-waste was generated in 2022, equivalent to 7.8 kg of e-waste per person per year. E-waste
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Experimental and numerical investigation of turbulent multiphase jets Miner. Eng. (IF 4.8) Pub Date : 2024-04-24 Till Zürner, Vikrant Kamble, Roland Rzehak, Kerstin Eckert
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Stability of a thin film of water formed between a bubble and a quartz surface with acoustic sound Miner. Eng. (IF 4.8) Pub Date : 2024-04-20 Bingyu Yang, Hangil Park, Liguang Wang
Froth flotation, a versatile particle separation technology, is widely used for beneficiation of minerals. Central to the flotation process is the bubble-particle interaction. Recent research progress showed that flotation efficiency could be improved by acoustic sound, which was attributed to increased froth stability, but it was not clear as to whether the acoustic sound would also enhance the bubble-particle
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Optimization of Upper group 2 flotation using Acidithiobacillus ferrooxidans as a modifier Miner. Eng. (IF 4.8) Pub Date : 2024-04-20 Nokubonga G. Zulu, Bongephiwe M. Thethwayo, Mapilane Madiba
Coupling of biotechnology and mineral processing arise from the depletion of high-grade ores. () is a chemolithotroph, γ-proteobacterium, gram negative bacteria that has been used in biomining over the years due to its ability of bio mobilising valuable minerals and metals. In this study, the ability of ability to modify and pre-concentrate base metal sulphides from Upper Group 2 (UG2) was investigated
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Characterisation of the multiphase fluid dynamics of the CoarseAIR™ fluidised bed flotation cell using the Large Modular Array (LaMA) for positron emission particle tracking (PEPT) Miner. Eng. (IF 4.8) Pub Date : 2024-04-19 Diego Mesa, Dawid M. Hampel, Stephen J. Neethling, Tzany Kokalova Wheldon, Pablo R. Brito-Parada
Fluidised bed flotation cells (FBFCs) present a compelling solution for coarse particle flotation, enabling an increase in the target particle size in comminution circuits, with the corresponding energy savings. Despite their potential and strong industrial interest, the three-phase fluid dynamics of large-scale FBFCs remain unexplored due to measurement complexities and size restrictions. This paper
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The migration and volatilization of toxic elements during briquette pyrolysis procedure Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 Juan Chen, Jianjun Wu, Yixin Zhang, Yang Guo, Long Yan, Jian Li, Zhenkun Guo, Bi Chen, Hua Wang
Briquetting technique can be an excellent energy saving utilization of pulverized coal, and the thermal chemical treatment of briquette has attracted the extensive attention of researchers due to its efficiency and applicability. To reveal the migration and volatilization characteristic of toxic trace elements (As, Se and Cd) during pyrolysis procedure of briquette, this paper studied the effects of
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Comparison of circuits over time in Canadian practice Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 James A. Finch, Yue Hua Tan
Evaluation of circuits in Canadian practice based on surveys in 1957 and 2020 was used to identify the common types and whether there was any change over time. Three-stage circuits were considered along with a measure of circuit separation efficiency. The rougher-scavenger-cleaner and rougher-cleaner-cleaner still dominate, together comprising over 60% usage. Correlation against circuit separation
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Exopolysaccharide (EPS) synthesised from Azotobacter vinelandii and its characterisation and application in bioflotation Miner. Eng. (IF 4.8) Pub Date : 2024-04-17 Zejun Wang, Qing Shi, Bo Miao, Binbin Li, Sen Li
In this study, we investigated microbial flotation as a green separation technology in mineral processing. We explored their potential use as environmentally friendly depressants for chlorite by extracting and purifying exopolysaccharides (EPS) from () and comparing them with commercial alginate. Results showed that EPS derived from under different fermentation substrates, particularly carbon sources
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Effect of pH and current density on the physical properties of cobalt obtained by electrowinning from sulfate solutions Miner. Eng. (IF 4.8) Pub Date : 2024-04-15 Fabiano Augusto Costa Mafra Passos, Jonas da Cruz Trajano de Souza, Iranildes Daniel dos Santos, Reiner Neumann, Pedro Paulo Medeiros Ribeiro, Achilles Junqueira Bourdot Dutra
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Shapley analysis of the effect of operational variables on recovery and grades of a Knelson concentrator Miner. Eng. (IF 4.8) Pub Date : 2024-04-15 Jessica Frigger, Chris Aldrich, Xiu Liu, Boris Albijanic
Gold ore deposits are decreasing in grade and are becoming more complex in nature. The Knelson gravity concentrator is an attractive option for processing these ores, though it is normally used for free-milling, because they are already widely accepted in the industry and are relatively easy to operate. However, more work needs to be done to optimise the operating conditions for these ore types. In
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Identifying true collectorless flotation of chalcopyrite in calcium chloride solutions Miner. Eng. (IF 4.8) Pub Date : 2024-04-14 Minsu Hwang, Yufan Mu, Liang Cao, Yongjun Peng
Given the increasing use of seawater containing primary ions (e.g. Na and Cl) and secondary ions (e.g. Ca and Mg) in flotation plants to counteract the global freshwater scarcity, more and more studies have been performed to determine the impacts of seawater on mineral flotation behaviors. From a new and practical niche, this study aimed to determine the natural floatability of chalcopyrite in the
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Efficient removal of the residual ammonium from weathered crust elution-deposited rare earth tailings by a ternary compound eluent Miner. Eng. (IF 4.8) Pub Date : 2024-04-13 Xiaoju Li, Junxia Yu, Xiaodi Li, Rong Wang, Fang Zhou, Zhenyue Zhang, Chunqiao Xiao, Ruan Chi
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Novel strategy for improved sylvite flotation through controlled crystallization Miner. Eng. (IF 4.8) Pub Date : 2024-04-12 Yuan Yuan, Weiquan Zhan, Yang Tian, Alejandro López Valdivieso, Hao Yi, Shaoxian Song, Luis A. Cisternas, Feifei Jia
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Optimization of flip-flow screen plate based on DEM-FEM coupling model and screening performance of fine minerals Miner. Eng. (IF 4.8) Pub Date : 2024-04-11 Xu Hou, Weinan Wang, Jiahao Pan, Pengfei Mao, Songxue Zhang, Chenlong Duan
Flip-flow screen has unique advantages in dry deep screening of sticky and wet fine minerals. However, during the flip-flow screening process, the continuous collision of mineral materials causes the actual motion state of the screen plate to differ significantly from the ideal state. Clarifying the actual motion changes and stress characteristics of the flip-flow screen plate under the combined action
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Instance segmentation of quartz in iron ore optical microscopy images by deep learning Miner. Eng. (IF 4.8) Pub Date : 2024-04-08 Bernardo Amaral Pascarelli Ferreira, Karen Soares Augusto, Julio César Álvarez Iglesias, Thalita Dias Pinheiro Caldas, Richard Bryan Magalhães Santos, Sidnei Paciornik
Iron ore characterization is essential for the mineral industry since it provides relevant information, such as ores' chemical composition and the textural and morphological aspects of particles, required for designating a proper mineral processing route. Reflected Light Optical Microscopy (RLOM) is typically used in this field, as it allows the identification of most mineral phases by their different
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Effect of agglomeration on nickel extraction and sulfur release from ultramafic nickel sulfide concentrates Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Fanmao Wang, Sam Marcuson, Reda Elsawi, Lucy Liu, Jahir Mion Ramos, Mike Walker, Mansoor Barati
The authors have proposed an upgrading process for ultramafic nickel concentrates which is comprised of agglomeration of iron powders and concentrates followed by a two-stage thermal treatment at temperatures lower than the typical smelting conditions. This allowed the nickel to migrate from the sulfide phase to metallic ferro-nickel particles, making solid-to-solid contact important. Agglomeration
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Corrigendum to “A systematic study on gelatinization efficiency of starch by NaOH for enhanced hematite depression” [Min. Eng. 209 (2024) 108621] Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Elaine Cristina Andrade, Saeed Chehreh Chelgani, Laurindo de Salles Leal Filho
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Reductive thermal plasma conversion of a spodumene concentrate and impact on lithium extraction Miner. Eng. (IF 4.8) Pub Date : 2024-04-06 Colin Dessemond, Gervais Soucy, Nicolas Laroche
The conversion of α-spodumene was performed using two different CO/CH thermal reductive plasma reactors. Using one configuration, particle size was proven to have a major role in lithium extraction. Lithium extraction efficiency decreases if the particles are too large. The third phase γ-spodumene is less reactive than β-spodumene and has a negative effect on lithium extraction. The other configuration
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Electrochemical cobalt oxidation in chloride media Miner. Eng. (IF 4.8) Pub Date : 2024-04-05 Iryna Makarava, Jere Vänskä, Agnieszka Kramek, Jacek Ryl, Benjamin P. Wilson, Kirsi Yliniemi, Mari Lundström
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Estimating effective volumes in industrial forced-air flotation cells Miner. Eng. (IF 4.8) Pub Date : 2024-04-03 Luis Vinnett, Juan Yianatos, Francisco Díaz, Ahmad Hassanzadeh
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Water-soluble rare earth elements (REEs) recovered from uranium tailings Miner. Eng. (IF 4.8) Pub Date : 2024-03-28 Alan Levett, Antony van der Ent, Thomas Ray Jones, Kimiya Bolouri, Kieran Kelly, James Vaughan, Mansour Edraki, Peter Erskine, Gordon Southam
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Experimental investigation and numerical modeling of effect of specimen size on microwave-induced fracturing of diorite Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Zhongjun Ma, Yanlong Zheng, Fuxin Rui, Gaofeng Zhao, Jianchun Li, Ping Che
The effect of specimen size on microwave-induced fracturing of rocks has not been well understood. In this study, the experimental tests using open-ended microwave and numerical simulations coupling COMSOL Multiphysics and four-dimensional lattice spring model (4D-LSM) were carried out to investigate the evolution process of microwave-induced cracks, and to elucidate the mechanisms responsible for
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Characterizing low-grade refractory gold ores using automated mineralogy coupled with LA ICP-MS Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Steve Jason Chingwaru, Margreth Tadie, Bjorn Von der Heyden
Researchers have made notable progress in quantifying refractory components causing gold losses in traditional extraction methods. The potential for improving gold recoveries lies in targeted re-treatment of the 'invisible' gold fraction hosted within various ore minerals, even at low concentrations. This study presents a methodology for analysing the refractory components that cause gold losses in
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Electrochemical characterizations and galvanic effect of chalcopyrite leaching and passivation-A review Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Xin-Jie Liu, Yalong Liao, Haifei Ma, Qingfeng Liu
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Flowsheet development for and commissioning of the Kamoa-Kakula project Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 N.O. Lotter, E. Whiteman, M.C. Hoffman, V. Nkuna, S.R. Amos, A. Groenewald
The Kamoa-Kakula copper resource, located west of Kolwezi in the Democratic Republic of the Congo, was discovered and explored by Ivanhoe from 2008/9 on. As a greenfield project with prospects of high grade ore and a long life-of-mine, the need for best practice flowsheet development was recognised, so as to ensure sustainability of metallurgical performance at the at the maximum economic level from
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Exploration of a novel depressant pullulan gum for the flotation separation of specularite from aegirite Miner. Eng. (IF 4.8) Pub Date : 2024-03-27 Cheng Yang, Guoqi Song, Pengpeng Zhang, Chao Wang, Xiangpeng Gao, Mingyang Li
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Effects of alkali pretreatment on the flotation of spodumene and feldspar Miner. Eng. (IF 4.8) Pub Date : 2024-03-26 Zhimin Ma, Longhua Xu, Wenjun Guo, Donghui Wang, Kai Xue
The surface chemistry and morphology of minerals produced by alkali pretreatment affects their flotation behaviors. This study systematically investigated the impact on the mineral surface dissolution using NaOH as a modifier, which could modify the surface properties of minerals and improve the floatability difference between spodumene and feldspar. Various characterizations including flotation experiments
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Prediction of multi-stage froth flotation efficiency of complex lead–zinc sulfide ore using an integrated ensemble neural network–random forest model Miner. Eng. (IF 4.8) Pub Date : 2024-03-26 Kwanghui Jo, Jinyoung Je, Donwoo Lee, Heechan Cho, Kwanho Kim, Kwangsuk You
Despite the long history of flotation in the mineral processing industry, its prediction and understanding remains a great challenge owing to its many variables acting in a complex manner. In this study, we introduced machine learning (ML) models to predict the grade and yield of a multi-stage flotation process of a complex lead–zinc sulfide ore. Over 100 batch flotation tests were conducted in a stepwise
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Insights into metal wear and particle breakage using Bond's abrasiveness test Miner. Eng. (IF 4.8) Pub Date : 2024-03-24 Alan A.A. Tino, Gabriel K.P. Barrios, Luís Marcelo Tavares
Nearly 80 years ago Fred Bond proposed his abrasiveness test, also known as Allis Chalmers abrasion test, together with empirical equations that have been used to predict the wear of mill and crusher liners, besides grinding media. Although those equations have been widely criticized over the years, in particular owing to the limited accuracy of the correlations originally proposed to predict wear
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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
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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
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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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