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Solvent extraction of titanium(IV) from orthophosphoric acid media using Aliquat-336/kerosene and stripping with nitric acid Hydrometallurgy (IF 4.8) Pub Date : 2024-09-14 Ahmed A. Galhoum, Basma T. Mohamed, Shaimaa S. Abdulmoteleb, Said I. Mohamady, Nagwa I. Falila
Titanium extraction from acidic solutions was investigated using Aliquat-336, considering factors like acid type and concentration for leaching, diluent type for solvent extraction, equilibration time, extractant concentration, phase ratio, and temperature. Kerosene exhibited superior performance as an aliphatic diluent for Aliquat-336 compared to other utilized diluents. The extraction efficiency
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Selective extraction of silver from jarosite residues produced in the zinc hydrometallurgical process using thiourea under acidic conditions: Kinetic analysis and leaching optimization Hydrometallurgy (IF 4.8) Pub Date : 2024-09-06 Mary C. Nolasco, Israel Rodríguez, Javier E. Vilasó, Mizraim U. Flores, Thangarasu Pandiyan, Emmanuel J. Gutiérrez, Javier Aguilar, Martín Reyes, Iván A. Reyes
In this work, an industrial hazardous jarosite residue produced in the zinc hydrometallurgical process containing silver was used to evaluate the feasibility of using thiourea (Tu) for silver leaching under acidic conditions in the presence of oxalate (CO ion denoted as Ox). The shrinking core kinetic model (SCKM) was applied to evaluate the effect of variables on the reaction rate. The chemical reaction
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Study on ultrasonic assisted intensive leaching of germanium from germanium concentrate using HCl/NaOCl Hydrometallurgy (IF 4.8) Pub Date : 2024-09-03 Mingyuan Rao, Hongying Xia, Yingjie Xu, Guiyu Jiang, Qi Zhang, Yongtao Yuan, Libo Zhang
Ultrasonic radiation is widely used in the enhancement of leaching process with outstanding advantages in leaching efficiency. In this study, a germanium concentrate was leached with NaClO and the influence of factors such as ultrasound power and oxidant addition on the leaching efficiency of germanium from the concentrate were investigated. The leaching efficiency of germanium reached 96.8% at the
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Comparison of non-reactive solute transport models for the evaluation of fluid flow in packed beds with implications for heap leaching practice Hydrometallurgy (IF 4.8) Pub Date : 2024-08-24 Michael D. Odidi, Marijke A. Fagan-Endres, Susan T.L. Harrison
This study investigated the effects of mean particle size fraction, bottom particle size, particle porosity and wettability on solution scale preferential flow behaviour via step input tracer tests in drip irrigated, narrowly and mixed-sized beds under steady state fluid flux. Nine solute transport models were used to quantify this behaviour reflected in the residence time distribution (RTD) profiles
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Anion exchange recovery of rhenium from industrial liquors followed by direct synthesis of a rhenium halide salt Hydrometallurgy (IF 4.8) Pub Date : 2024-08-23 Evgeny Kirillov, Zhanna Bochkareva, Vladimir Semenishchev, Sergey Kirillov, Grigory Bunkov, Vladimir Rychkov
In the present study, the sorption of perrhenate ions from sulfuric acid liquors was studied using three types of polymer ion exchange resins. An anion exchange resin type 1 (a copolymer of 2-methyl-5-vinylpyridine with divinylbenzene (VP-DVB)) as well as two polyfunctional resins containing anion and cation exchange functional groups, namely, type 2 (a carboxylated VP-DVB with pyridine-2-carboxylic
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Hydrochloric acid leaching of rare earth elements from a novel source of deep-sea sediments and advantage of reduction with H2O2 Hydrometallurgy (IF 4.8) Pub Date : 2024-08-22 Kuifang Zhang, Zhiqiang Liu, Hui Liu, Wei Zhu, Bohan Wei, Xiaocong Zhong, Ruixiang Wang, Yuping Zeng
In this study, the mineralogy of a novel resource of deep-sea sediments containing rare earth elements (REEs) was investigated, along with the leaching of REEs using hydrochloric acid. The results revealed that, apart from 62.0% of the Ce found in the Mn oxides, the other REEs in the deep-sea sediments mostly existed in hydroxyapatite mineral which can be easily decomposed via a hydrochloric acid leaching
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Environmentally friendly non-saponification solvent extraction and separation process for RE(III) (RE = Eu, Gd and Tb) in acetic acid solution using HEHEHP/n-heptane Hydrometallurgy (IF 4.8) Pub Date : 2024-08-19 Xiaoyang Qu, Xuxia Zhang, Jian Li, Shangwan Fu, Kejia Liu, Yangyang Xie, Liuyimei Yang, Hui Zhang, Tao Qi
The key to achieving sustainable metal extraction development is to avoid the generation of high-salt wastewater from the source. Here, a new system for the extraction and separation of lanthanide elements Eu(III), Gd(III) and Tb(III) from the acetic acid solution using HEHEHP (2-ethylhexyl hydrogen-2-ethylhexylphosphonate) was studied. The corresponding parameters including contact time, HEHEHP concentration
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Gold recovery from chloride leach solution of TCCA using D301 anion exchange resin and elution with thiourea Hydrometallurgy (IF 4.8) Pub Date : 2024-08-18 Huiqun Niu, Hongying Yang, Linlin Tong
Trichloroisocyanuric acid (TCCA), which is used for gold leaching, is an alternative to cyanidation due to its lower toxicity and higher efficiency. This study investigated the gold recovery procedures from highly effective chloride leaching solution using the D301 resin. This approach prevented the inhibition of gold adsorption when using activated carbon. Herein, the optimal conditions for gold adsorption
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Efficient and selective recovery of Mo and V from spent hydrodesulfurization catalysts via oxidation roasting followed by Na2CO3 and NaOH leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-08-13 Kaiyuan Fang, Guiqing Zhang, Qinggang Li, Wenjuan Guan, Mingyu Wang, Shengxi Wu, Xinbing Xia, Chonglong Shi
Spent hydrodesulfurization (HDS) catalysts containing large amounts of valuable metals, such as Mo and V, are hazardous solid wastes but also valuable secondary resources. However, the current recovery process suffers from the difficulty of balancing the leaching efficiency of Mo and V and their selectivity over Al. This work focused on the effect of phase transformation during roasting operation on
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Efficient ammoximation and regeneration of degraded hydroxyoxime CP150 over TS-1 molecular sieve/H2O2 system and reuse for solvent extraction of Cu(II) Hydrometallurgy (IF 4.8) Pub Date : 2024-08-08 Qionghua Xie, Qijie Chen, Ying Yu, Qi Sun, Liangshi Wang
The regeneration of failed hydroxyoxime extractants in the copper hydrometallurgy industry is crucial. However, the existing regeneration system has limitations in terms of operability, yield, and environmental friendliness, which restricts its industrial application. This paper presents a clean one-pot ammoximation regeneration system for the in-situ preparation of hydroxylamine for the oximation
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Improving the transfer of dissolved oxygen in a biological Fe2+ oxidation process using a venturi jet as an intensive aeration system Hydrometallurgy (IF 4.8) Pub Date : 2024-07-31 Joan Morell, Xavier Guimerà, Antonio David Dorado
The low bio-production of Fe as a leaching agent is one of the main limitations to implementing industrial bio-processes at feasibility conditions. The main limitation of the bio-oxidation process of Fe is the low oxygen transfer to the aqueous phase because of the low oxygen solubility. This study assesses the effectiveness of the venturi jet as an innovative and intensive aeration device for overcoming
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Removal of calcium from phosphoric acid produced by the nitric acid process using solvent extraction with TCHDGA and stripping with water Hydrometallurgy (IF 4.8) Pub Date : 2024-07-30 Chengjin Xu, Miaomiao Zhang, Jianhui Su, Xiujing Peng, Xiangfeng Kong, Yanping Luo, Jiahui Sun, Yu Cui, Xuchuan Jiang, Guoxin Sun
The phosphoric acid produced by the nitric acid method cannot be used as an industrial-grade product as a result of the high calcium nitrate content. It can only be used for fertilizer production due to difficulty of complete removal of calcium nitrate. Herein, an efficient approach for the removal of calcium nitrate from the phosphoric acid produced by the nitric acid process was studied. The proposed
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Recovery of indium by solvent extraction with crown ether in the presence of KCl and stripping with HCl: A mechanistic study Hydrometallurgy (IF 4.8) Pub Date : 2024-07-29 Gaojie Chen, Yanhang Xiong, Liang Xu, Chao Yao, Xiaofeng Zhang, Cheng Yang, Yongpan Tian, Zhuo Zhao
Hydration of In is the main factor limiting its extraction efficiency from an aqueous solution during a liquid-liquid extraction process. In this study, KCl was introduced into the aqueous solution to facilitate the formation of InCl of low charge density, which is expected to possess much weaker hydration compared with In, promoting the solvent extraction of indium. The crown ethers (CEs) with varied
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Selective anion exchange adsorption of molybdenum(VI) at low concentrations from an acid leached vanadium shale solution containing aluminium and phosphorus Hydrometallurgy (IF 4.8) Pub Date : 2024-07-28 Miao Wang, Xinlong Yang, Jiankang Wen, Wenjuan Li, Hongying Yang, Wengang Liu
With a decline in high-grade molybdenum reserves, the development of other types of molybdenum resources have received increasing attention. Vanadium shale is a multi-metal shale and fine-grained sedimentary rock comprising small grains and various minerals. After leaching and extracting vanadium, the solution often contains a low concentration of molybdenum. However, because of the low molybdenum
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The use of organophosphorus extractants as a component of hydrophobic deep eutectic solvents (HDES) for the processing of spent lithium‑iron phosphate batteries Hydrometallurgy (IF 4.8) Pub Date : 2024-07-22 Arina V. Kozhevnikova, Dmitriy V. Lobovich, Nikita A. Milevskii, Inna V. Zinov'eva, Yulia A. Zakhodyaeva, Andrey A. Voshkin
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Application of nanofiltration for the recovery of nickel glycinates from alkaline glycine-based solutions using polyamide membranes: A technical note Hydrometallurgy (IF 4.8) Pub Date : 2024-07-22 Huan Li, Elsayed A. Oraby, Jacobus J. Eksteen
Glycine has been intensively investigated as a “green” lixiviant for precious and base metals. Alkaline glycine solutions to extract Ni from sulfide resources has shown promising results. However, a considerable amount of Ni will be lost in the wash solutions when leaching residues are washed during solid-liquid separation of the leachates from their respective leach residues. In this context, this
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3D imaging of leach columns from Rochester mine for pore network characteristics and permeability simulated by the Lattice Boltzmann Method Hydrometallurgy (IF 4.8) Pub Date : 2024-07-20 Amanda N. Erskine, Jiaqi Jin, Chen-Luh Lin, Jan D. Miller, Shijie Wang
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Application of clean oxidation technology using H2O2 for simultaneous removal of sulfur and organic substances in the Bayer process Hydrometallurgy (IF 4.8) Pub Date : 2024-07-19 Mengnan Li, Zhanwei Liu, Hengwei Yan, Wenhui Ma, Shuxin Liu
The harmful effects of sulfur and organic substances pose constraints on the green and sustainable development of the Bayer process for alumina production. This research aims to develop a method that utilizes HO to remove sulfur and organic substances during the digestion stage of bauxite, based on the mineralogical investigation of sulfur and organic substance. The extent of removal of S and total
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A zero-liquid discharge process to recover all critical metals from spent NCM111 cathode material of end-of-life lithium-ion batteries: statistically optimized leaching with formic acid and in-situ crystallization Hydrometallurgy (IF 4.8) Pub Date : 2024-07-15 Alexandru Sonoc, Rajashekhar Marthi, Jacob Jeswiet
A green chemistry process has been developed to recycle cathode material from end-of-life lithium ion batteries. NCM111 (LiNiCoMnO) was completely leached with 13 M formic acid to produce two groups of salts with different solubilities: sparingly soluble cobalt, manganese, and nickel (CMN) formates and highly soluble lithium formate. During leaching, CMN formate salts exceeded their solubility limit
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The role of oxidants in the intensive cyanidation of gold. II. Sulfide mineral oxidation Hydrometallurgy (IF 4.8) Pub Date : 2024-07-14 M. Nicol, W.P. Staunton, T. McGrath
In the intensive cyanidation of gravity gold concentrates, sodium m-nitrobenzene sulfonate (NBS) is often used to supplement dissolved oxygen as the oxidant in the process. A previous paper presented the results of a largely electrochemical study of the behaviour of NBS during cyanidation of gold. The results confirmed that NBS acts as an oxidant in the cyanidation of gold and that the mixed potential
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The role of oxidants in the intensive cyanidation of gold. 1. Gold dissolution Hydrometallurgy (IF 4.8) Pub Date : 2024-07-14 M. Nicol, W.P. Staunton, T. McGrath
In the intensive cyanidation of gravity gold concentrates, sodium m-nitrobenzene sulfonate (NBS) is often used to supplement dissolved oxygen as the oxidant in the process. This paper presents the results of a largely electrochemical study of the behaviour of NBS during cyanidation. The results have confirmed that NBS acts as an oxidant in the cyanidation of gold and that the mixed potential model
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Recovery of Pt, Pd, and Rh from spent automotive catalysts through combined chloride leaching and ion exchange: A review Hydrometallurgy (IF 4.8) Pub Date : 2024-07-10 Mostafa Hosseinzadeh, Jochen Petersen
Three platinum group metals (PGMs), platinum (Pt), palladium (Pd), and rhodium (Rh), are key components in automotive catalytic convertors, playing a pivotal role in controlling harmful emissions. The recycling and recovery of Pt, Pd, and Rh from spent automotive catalysts (SACs) have gained increasing attention as essential measures to mitigate resource depletion, supply risks, and environmental impacts
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Design of a continuous ion exchange process in battery metals recycling: From single column experiments towards a simulated moving bed configuration Hydrometallurgy (IF 4.8) Pub Date : 2024-07-08 Tobias Wesselborg, Siiri Asumalahti, Sami Virolainen, Tuomo Sainio
In hydrometallurgical recovery of LIB metals, ion exchange (IX) has hitherto played only a minor role. Separation experiments were conducted in single laboratory-scale IX columns with the aim of laying the foundation for a continuously operated multicolumn IX process similar to a simulated moving bed (SMB) configuration. In this study, the initial process developed earlier was improved by reducing
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Identification of processes in Cu-ore heap leaching using Cu isotopes and leachate chemistry at Tschudi mine, northern Namibia Hydrometallurgy (IF 4.8) Pub Date : 2024-07-04 Ondra Sracek, Vojtěch Ettler, Martin Mihaljevič, Bohdan Kříbek, Ben Mapani, Vít Penížek, Tereza Zádorová, Aleš Vaněk
Copper isotopic fractionation (in δCu) and leachate characterization were studied in the context of heap leaching at the Tschudi copper mine in northern Namibia. The leached solution is of Mg-SO type with high Al and Fe concentrations. The source of Mg and Al in the leachate can be from the alteration of micas such as Mg-bearing muscovite confirmed by X-ray diffraction and scanning electron microscopy;
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Gold recovery from roasted refractory gold concentrate through cyclic extraction using MnO2-assisted thiocyanate leaching and cementation with zinc powder Hydrometallurgy (IF 4.8) Pub Date : 2024-07-03 Weiyao Li, Bo Liu, Jiajia Wu, Wei Liu, Fen Jiao, Wenqing Qin
Cyanidation has long served as the industrial standard in the gold industry, necessitating heightened attention to cyanide management owing to its inherent toxicity. This study developed a novel MnO-assisted thiocyanate leaching system as an alternative to cyanide. The sample was generated from a refractory gold concentrate processed by roasting, containing 54.4 g/t gold with iron oxide and quartz
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Variations in pore structures and permeabilities of ion adsorption rare earth ores during simulated in-situ leaching: Effect of newly formed clay particles and their swelling Hydrometallurgy (IF 4.8) Pub Date : 2024-07-03 Lian Zhang, BaoPing Wen, Lingkang Chen, Haixia Chen, Kaixing Wu
In-situ leaching is essential for mining rare earth elements (REEs) from ion-adsorption rare earth (RE) ores. The efficiency of RE mining is dependent on the permeabilities of ion-adsorption RE ores, and the permeabilities are controlled by their pore structures. However, the current understanding of the pore structures and permeabilities of the RE ores during leaching is limited, particularly their
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Study on pre-oxidation of silver concentrate and leaching behaviour of Zn, Cu and In during oxygen-pressure leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-06-28 Liu Qiang, Li Cun-xiong, Gu Zhi-hui, Li Chang-wen, Wang Qi-liang
Given the limitations of current processing methods and the potential of high recovery of silver as a flotation concentrate, this study proposes a pre-oxidation followed by oxygen pressure sulphuric acid leaching route for zinc, copper and indium and thoroughly examines the alteration in micro-morphology of the silver concentrate of 1.22% Pb, 3010 g/t Ag and 649 g/t In. Under the optimal conditions
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Production of α-Ti(HPO4)2·H2O, TiP2O7 and (TiO)2P2O7 from ilmenite by KOH roasting, H3PO4 leaching and calcination Hydrometallurgy (IF 4.8) Pub Date : 2024-06-19 Ushan S. Kulathunga, Kusal D. Mendis, Ashen I. Mapa, Champa D. Jayaweera, Masaru Shimomura, Lalinda Palliyaguru, Pradeep M. Jayaweera
Alpha titanium bis(hydrogenphosphate) monohydrate, α-Ti(HPO)·HO, (α-TiP) is a precursor material utilized to obtain a broad range of important compounds having a great deal of applications ranging from ion-exchange chromatography, chemical catalysis to energy storage materials. The novel synthetic procedure developed in this study shows a higher conversion of titanium in ilmenite to α-TiP with a good
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Cesium extraction from an alkali-free solution using a 4-tert-butyl-2-(α-methylbenzyl) phenol–di-(2-ethylhexyl) phosphoric acid synergistic system: A conceptual process flowsheet for separating cesium salt from salt-lake brine Hydrometallurgy (IF 4.8) Pub Date : 2024-06-19 Xinyu Cheng, Dong Shi, Yuze Zhang, Xiaowu Peng, Shaolei Xie, Lijuan Li, Yong Niu, Yuxuan Wang, Fugen Song
Cesium is an important strategic resource, and solvent extraction is the most frequently used technology for its extraction from various minerals and brines. However, this common method faces operational and cost problems owing to large alkali consumption. A synergistic extraction system consisting of 4--butyl-2-(α-methylbenzyl) phenol (t-BAMBP) and di-(2-ethylhexyl) phosphoric acid (D2EHPA) was designed
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A hydrometallurgical process flowsheet for recovering MoO3 from Molybdenite Hydrometallurgy (IF 4.8) Pub Date : 2024-06-19 Hossein Shalchian, Ionela Birloaga, Motahareh Bagheri Moghaddam, Hadi Nasiri, Francesco Vegliò
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Influence of ionic liquid (R4PSCN) for selective separation and recovery of copper from spent Cu[sbnd]Cr catalyst leach liquor Hydrometallurgy (IF 4.8) Pub Date : 2024-06-13 Saroj Sekhar Behera, Pankaj Kumar Parhi
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Efficient extraction of lithium from alkaline solution using the synergistic extractants ethylhexyl salicylate and trialkylphosphine oxide in kerosene and stripping with acid Hydrometallurgy (IF 4.8) Pub Date : 2024-05-31 Zhonghua Niu, Licheng Zhang, Ruirui Liu, Yongquan Zhou, Lianmin Ji, Lijuan Li
Efficient separation of lithium from alkaline solution with high Na/Li ratio is of great importance for the development of batteries for new energy industry. This work proposes the use of a novel extraction system composed of ethylhexyl salicylate (ES) and trialkylphosphine oxide (TRPO). The equilibrium experiment revealed that the order of metal ions extracted by ES/TRPO extraction system is Mg > Ca > Li > Na > K
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Base metals recovery from waste printed circuit board leachate using biogenic hydrogen sulfide gas Hydrometallurgy (IF 4.8) Pub Date : 2024-05-29 Jonovan Van Yken, Naomi J. Boxall, Ka Yu Cheng, Aleksandar N. Nikoloski, Navid R. Moheimani, Anna H. Kaksonen
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High efficiency separation of bastnaesite (REFCO3) and monazite (REPO4) in mixed rare earth concentrate by heating under N2 and leaching with HCl/AlCl3 Hydrometallurgy (IF 4.8) Pub Date : 2024-05-28 Jiahao He, Peng Gao, Shuai Yuan, Shaokai Cheng, Jilai Ning, Zhenya Zhou, Yongsheng Sun, Wenbo Li
Bayan Obo mixed rare earth (RE) concentrate is one of the most significant rare earth mineral resources worldwide. However, the concentrated sulfuric acid roasting method, which is commonly used to treat ores, generates pollutants such as waste gas, wastewater, and leach residue, resulting in the squandering of the associated resources. This paper introduces a green process involving selective mineral
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Investigating the mechanism of Au(III) transport using a polymer inclusion membrane with dibutyl carbitol as a carrier Hydrometallurgy (IF 4.8) Pub Date : 2024-05-26 Meisam Ghiasi, Mahmoud Abdollahy, Mahdi Abdollahi, Mehdi Mohseni
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Hollow drop bubbles: A preliminary study of simplified prototype for improving copper(II) extraction with ACORGA® M5640 using coated bubble swarm Hydrometallurgy (IF 4.8) Pub Date : 2024-05-24 Diego Poblete, Claudio Leiva, María Sinche-Gonzalez, Claudio Acuña
There are two well-defined processes for the types of copper ores. One for the processing of copper sulfides and another for the processing of the copper oxides. There are similarities between the two, particularly in the preparation stage of the run of mine (ROM) such as the crushing. However, significant differences exist in how to concentrate the elements of interest. Flotation is the most used
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Nickel(II) extraction from chloride solutions using N-2-ethylhexylpyridine-3-formamide: A new reagent toward clean hydrometallurgy and a proposed flowsheet for chloride leach liquors of nickel laterites Hydrometallurgy (IF 4.8) Pub Date : 2024-05-21 Wensen Liu, Yahui Liu, Hui Su, Jian Zhang, Pengfei Shi, Jie Liang, Zhaowu Zhu
Base metal hydrometallurgy in a chloride medium has considerable advantages, as metals can be recovered by solvent extraction through a neutral complex mechanism without extra reagent addition, leading to ready lixiviant recycling and significantly reduced wastewater discharge. However, the recovery of Ni(II) using this hydrometallurgical method is challenging because of the unavailability of appropriate
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Optimization of LiF dissolution with Al2(SO4)3 and its application to lithium extraction by fluorination of α-spodumene Hydrometallurgy (IF 4.8) Pub Date : 2024-05-18 Gustavo D. Rosales, Alexander C. Resentera, Gretel J. Fino, Eliana G. Pinna, Mario H. Rodriguez
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Complete gold extraction and recovery from double refractory gold ores by thiourea after bio-oxidation Hydrometallurgy (IF 4.8) Pub Date : 2024-05-17 Keiko Sasaki, Ikumi Suyama, Ryusei Takimoto, Kojo Twum Konadu, Hirofumi Ichinose, Jacques Eksteen
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Separation and recovery of sulfur from direct leach residue of zinc oxygen pressure leaching by dissolution in n-decane and recrystallization Hydrometallurgy (IF 4.8) Pub Date : 2024-05-13 Lijie Chen, Shenghui Wen, Ao Gong, Xiaoqiang Yu, Jiacong Xu, Qin Yi, Lei Tian, Ruixiang Wang, Zhifeng Xu
The effective recovery and utilization of elemental sulfur in the direct leach residue (DLR) from zinc oxygen pressure leaching poses a significant challenge. This study analyzes the distribution characteristics of sulfur in DLR and determines its solubility in -decane at various temperatures. Results indicate a gradual increase in sulfur solubility with temperature, reaching a maximum of 6.84 g/100 mL
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Study on the leaching of lithium from lithium-poor clay-type ore using tartaric acid by calcination and water leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-05-12 Yanling Tian, Xianquan Ao, Min Yang, Yuchun Yang, Junyu Wei, Fengyuan Wang
This study focuses on the ore characteristics and occurrence status of lithium in lithium-poor clay-type ores by employing activation pretreatment by calcination followed by leaching with tartaric acid. This study investigates the influence of factors such as calcination temperature, calcination time, and leaching temperature on the leaching yield of Li. The findings show the optimal leaching conditions
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A comparison of batch and semi-batch reactors for leaching battery cathodes (LiCoO2) under controlled addition of HCl and H2O2 Hydrometallurgy (IF 4.8) Pub Date : 2024-05-10 Maria del Mar Cerrillo-Gonzalez, Maria Villen-Guzman, Alvaro Rivas-Bascon, Jose Miguel Rodriguez-Maroto, Juan Manuel Paz-Garcia
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Recovery of valuable metals from manganese purification sludge (SPS) containing Mn-Ni-Co sulfide and preparation of battery-grade Ni-Co-Mn sulfate solution Hydrometallurgy (IF 4.8) Pub Date : 2024-05-04 Leiting Yue, Mingyu Wang, Jia Li, Wenjuan Guan, Qinggang Li, Zuoying Cao, Shengxi Wu, Guiqing Zhang
The manganese production industry produces a large amount of sulfide purification sludge (SPS) every year, representing a hazardous solid waste but also a valuable secondary resource for Ni, Co, and Mn. In this paper, the recovery of Ni, Co, and Mn from the SPS was achieved by (i) leaching with a solution of hydrogen peroxide, (ii) selectively extracting nickel, cobalt and manganese, (iii) solvent
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Multiscale modeling of reactive flow in heterogeneous porous microstructures Hydrometallurgy (IF 4.8) Pub Date : 2024-04-30 Akhilesh Paspureddi, Rafael Salazar-Tio, Ganapathi Raman Balasubramanian, Abhijit Chatterjee, Bernd Crouse
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Phase diagrams of CoSO4-H2O and CoSO4-H2SO4-H2O systems for CoSO4·nH2O (n = 6,7) recovery by cooling and eutectic freeze crystallization Hydrometallurgy (IF 4.8) Pub Date : 2024-04-29 Yiqian Ma, Mohammadreza Akbarkermani, Michael Svärd, Xiong Xiao, Suchithra Ashoka Sahadevan, James Gardner, Richard T. Olsson, Kerstin Forsberg
This paper reports the solid-liquid phase equilibria of the CoSO-HO and CoSO-HSO-HO systems at low temperatures. Binary and ternary phase diagrams, including the stable solid phases CoSO·6HO and CoSO·7HO were established using experimental data and thermodynamic modeling applying the mixed-solvent electrolyte (MSE) model. The results showed that the addition of HSO shifts the eutectic temperature and
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Extraction and separation of strategic precious Ag from low-grade Mn-Ag ores in China: A short review of co-leaching and selective leaching processes Hydrometallurgy (IF 4.8) Pub Date : 2024-04-29 Bingbing Liu, Chunyu Han, Yizhuang Wang, Shengpeng Su, Yanfang Huang, Hu Sun, Guihong Han
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Biosorption of gold(III) from leachates of waste printed circuit boards by baker's yeast Hydrometallurgy (IF 4.8) Pub Date : 2024-04-28 Shunpei Suzuki, Haruka Iijima, Yoshio Kobayashi, Yojiro Yamamoto, Hiroshi Shiigi, Norizoh Saitoh, Yasuhiro Konishi
A microbial method using commercially available baker's yeast was developed for efficiently and selectively collecting aqueous Au(III) ions in aqua regia leachates from waste printed circuit boards (PCBs) through biosorption under air at temperatures ranging from 10 °C to 34 °C. Even when the total concentration of base metals was much higher than the initial Au concentration in the PCB leachate with
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Waste reduction and high value utilization of jarosite-alunite residue (JAR) produced from the recovery of spent lithium-ion battery Hydrometallurgy (IF 4.8) Pub Date : 2024-04-25 Wenke Liu, Ping Li, Qingwei Qin, Wei Zhao, Hailin Zhang, Yunwu Han, Feijie Wu, Qiang Zhang, Shili Zheng, Guangqiang Li
The residue known as jarosite-alunite (JAR) is produced when the leach solution of spent lithium-ion battery is neutralized. This residue typically consists of Fe, Al, NaSO, Ni, Co, and Mn. It is classified as both a hazardous solid waste and a secondary resource. A unique hydrometallurgical technique was implemented to recover NaSO and use Al extracted from JAR in high value applications. This extraction
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Development of a conceptual direct solvent extraction (DSX) route and a flowsheet to produce purified concentrated cobalt and nickel solutions representing sulfuric acid leach liquor of laterite Hydrometallurgy (IF 4.8) Pub Date : 2024-04-23 Alexandre Silva Guimarães, Georgio Patrício de Souza Resende, Iranildes Daniel dos Santos, Marcelo Borges Mansur
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Behavior of calcium lignosulfonate under oxygen pressure acid leaching condition Hydrometallurgy (IF 4.8) Pub Date : 2024-04-21 Sijie Yang, Yuhu Li, Yudong Yang, Ran Liu, Yi Zhao
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Simultaneous extraction of molybdenum and silicon from sulphate leach solution of spent catalyst using trialkylamine (N235) and recovery of pure ammonium molybdate Hydrometallurgy (IF 4.8) Pub Date : 2024-04-21 Wenhui Shi, Jian Li, Yaobin Lai, Hui Zhang, Huadong Zhang, Xuxia Zhang, Kejia Liu, Tao Qi
Spent catalyst of molybdenum with silicon dioxide, commonly used as the carrier, is an important secondary resource for recovery of molybdenum. This work proposes a process to recycle molybdenum and remove silicon simultaneously by solvent extraction. The sulfuric acid leachate of the spent catalyst was contacted with the trialkylamine N235 (RN, R = C–C), to extract molybdenum and silicon. Several
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Selective leaching behavior of Nd from spent NdFeB magnets treated with combination of selective oxidation and roasting processes Hydrometallurgy (IF 4.8) Pub Date : 2024-04-21 Bosung Seo, Hyung-Ki Park, Taewook Na, Seojin Heo, Rina Kim, Ho-Sung Yoon, Kyeong Woo Chung, Kwangsuk Park
Selective leaching behavior of the spent NdFeB magnets was investigated to find out how controlled phase system through the roasting conditions gave an impact on the performance of the selective leaching. The pre-formed NdO by the selective oxidation made it possible to prevent the formation of NdFeO at high roasting temperature. This resulted in the ideal NdO and FeO phase system, which was obtained
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Mechanism of the denitrification of secondary aluminum dross (SAD) during water leaching with delayed addition of a low dosage of sodium hydroxide Hydrometallurgy (IF 4.8) Pub Date : 2024-04-21 Chuan Wang, Yongchun Guo, YongYi He, Sen Li, Jun Liu, Hu Liu
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Review of leaching, separation and recovery of vanadium from roasted products of vanadium slag Hydrometallurgy (IF 4.8) Pub Date : 2024-04-18 Changqing Li, Tao Jiang, Jing Wen, Tangxia Yu, Feifei Li
Vanadium is a strategic metal with extensive applications in steel production and emerging energy technologies. In vanadium metallurgy, the pivotal steps encompass the roasting of vanadium slag, leaching, and precipitation of vanadium. The roasting process, which involves elements such as sodium, calcium, manganese, and magnesium, facilitates the phase transformation and extraction of vanadium. Considering
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Reductive leaching of bauxite residue and subsequent scandium extraction by sulphuric acid leaching – Preliminary evaluation Hydrometallurgy (IF 4.8) Pub Date : 2024-04-16 A. Shoppert, D. Valeev, M.M. Diallo, J. Napol'skikh, I. Loginova
Bauxite residue (BR) is a by-product of bauxite refining using Bayer process for alumina production, which contains numerous valuable components: iron (Fe), aluminum (Al), and rare earth elements such as scandium (Sc). The main issue of previous research for the Sc extraction from BR was the low extraction efficiency or high Fe co-extraction. This article shows that Fe co-extraction can be significantly
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Effect of mechanical activation and HNO3 pre-treatment of Pulmoddai ilmenite for the extraction of Ti and TiO2 using H2SO4, HCl, and KOH-assisted leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-04-16 G.N.T. Jayalath, U.G.T. Nishadini, H.M.B.N. Wickramasooriya, H.C.S. Subasinghe, Amila Sandaruwan Ratnayake
Mild leaching with HNO acid can be suggested as a potential pre-treatment technique for removing most impurities found in ilmenite which has not been properly investigated yet. This study examines the mild HNO leaching behavior of ball-milled ilmenite as a novel pre-treatment method to produce high-purity synthetic rutile. Ilmenite was mechanically activated for 1 h at 500 rpm which was then reacted
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Dibutylamide hydrophobic deep eutectic solvent used for selective extraction of Au(III) from hydrochloric acid medium Hydrometallurgy (IF 4.8) Pub Date : 2024-04-16 Ronghao Liu, Jun Li, Xiaoxia Liu, Xiaolu Yin, Yanzhao Yang
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A novel bidentate diamide ligand DODQ for the separation of uranium and rare earth ions in nitric acid medium Hydrometallurgy (IF 4.8) Pub Date : 2024-04-16 Miaomiao Zhang, Zhen Yang, Jianhui Su, Heng Zhao, Chengjin Xu, Jiahui Sun, Xiaolei Liu, Xiujing Peng, Guoxin Sun, Yu Cui
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Effect of metals on recovery of gold from ammoniacal thiosulphate leach solutions by precipitation using trimercapto-s-triazine (TMT) Hydrometallurgy (IF 4.8) Pub Date : 2024-04-15 F. Ahlatci, E. Yilmaz, E.Y. Yazici, O. Celep, H. Deveci
There are significant technical challenges/shortcomings in recovering gold from thiosulphate leach solutions. This study presents a new approach for the recovery of gold from ammoniacal thiosulphate leach solutions using an environmentally friendly organo-sulphide reagent, trimercapto--triazine (TMT; CNS). Precipitation of gold by TMT was investigated using synthetic gold and multi-metal solutions
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Effects of pyrite, quartz and sodium sulfite on roasting of a refractory sulfide concentrate and gold, silver, copper leaching during cyanidation Hydrometallurgy (IF 4.8) Pub Date : 2024-04-13 Wei Yang, Qian Wang, Yaping Wang, Tao Long, Sha Deng
The oxidation roasting pretreatment process, which is a mature and dominant industrial practice for treating complex polymetallic gold deposits, has a low recovery of associated silver and exhibits an unclear reaction sequence. This study takes a silver-containing gold ore as the research object and investigates the effect of (i) sodium sulfite as an additive, (ii) main gold-bearing mineral pyrite