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Selection of a hydrometallurgical process for rare earths extraction from a Brazilian monazite Hydrometallurgy (IF 3.338) Pub Date : 2021-01-18 Raphael Cruz Alves; Marisa Nascimento; Jéssica Frontino Paulino; Júlio Carlos Afonso
This work describes the processing of a monazite concentrate containing iron mineral phases in order to recover the rare earth elements (lanthanum was taken as representative for REEs) with minimum iron interference. Three classical routes were tested: acid leaching, alkaline conversion and acid baking. Control of iron bearing mineral phases was performed during REEs leaching. The most important variables
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Reduction roasting and bioleaching of a limonite ore Hydrometallurgy (IF 3.338) Pub Date : 2021-01-13 Victor de Alvarenga Oliveira; Michael Leonardo Marques Rodrigues; Versiane Albis Leão
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Selective extraction of rare earths and lithium from rare earth fluoride molten-salt electrolytic slag by nitration Hydrometallurgy (IF 3.338) Pub Date : 2021-01-12 Huazhou Hu; Jinliang Wang
The extraction of rare earth elements (REEs) from rare earth fluoride molten-salt electrolytic slag has recently attracted attention because of the potential environmental hazards of this material and its rich content of valuable REEs. In this study, we used a selective nitration method to completely transform powdered samples into a nitrate mixture. We conducted a suitable selective roast-water leaching
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Kinetics of arsenic and sulfur release from amorphous arsenic trisulfide Hydrometallurgy (IF 3.338) Pub Date : 2021-01-12 Mohamad Mirazimi; Jinping Fan; Wenying Liu
Arsenic trisulfide (As2S3) is known as one of the possible precipitates in arsenic removal from metallurgical waste streams. The advantage of precipitation in the form of arsenic trisulfide is its high arsenic content (up to 61% theoretically). However, arsenic trisulfide is unstable, especially under alkaline and oxidizing conditions, which is a significant barrier to arsenic fixation in the form
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A review of hydrometallurgy techniques for the removal of impurities from metallurgical-grade silicon Hydrometallurgy (IF 3.338) Pub Date : 2021-01-12 Fengshuo Xi; Shaoyuan Li; Wenhui Ma; Zhengjie Chen; Kuixian Wei; Jijun Wu
Hydrometallurgy is considered a promising method to produce solar-grade silicon (SOG-Si) from metallurgical-grade silicon (MG-Si) due to its advantages of low cost, simple operation, and easy control. Researchers have investigated different hydrometallurgy techniques for impurity removal from MG-Si. This study systematically reviews hydrometallurgy techniques for the removal of impurities from MG-Si
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Preparation of high purity indium by chemical purification: Focus on removal of Cd, Pb, Sn and removal mechanism Hydrometallurgy (IF 3.338) Pub Date : 2020-12-23 Shuo Xu; Gang Wang; Jinlong Fan; Ziming Wang; Jie Zhang; Jinwei Chen; Lin Zheng; Jingong Pan; Ruilin Wang
In this study, a wet refining process for indium purification was developed aiming at the problem that the electrolysis refining method is difficult to remove cadmium, lead (Pb), and tin in indium, so as to reduce the energy-consuming and time-consuming process of smelting at the same time. The original electrolyte made by crude indium (99%) is co-precipitated to remove lead and pre-electrified to
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Transformation behavior of the morphology, structure and toxicity of amorphous As2S3 during hydrothermal process Hydrometallurgy (IF 3.338) Pub Date : 2020-12-30 Xiaobo Min; Qiujing Xu; Yong Ke; Hui Xu; Liwei Yao; Jingwen Wang; Huichuan Ren; Tongbing Li; Zhang Lin
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Surface processes at a polymetallic (Mn-Fe-Pb) sulfide subject to cyanide leaching under sonication conditions and with an alkaline pretreatment: Understanding differences in silver extraction with X-ray photoelectron spectroscopy (XPS) Hydrometallurgy (IF 3.338) Pub Date : 2020-12-29 Gonzalo Larrabure; Sheyla Chero-Osorio; Dhamelyz Silva-Quiñones; Carsten Benndorf; Mackenzie Williams; Fei Gao; Carlos Gamarra; Alejandro Alarcón; Carlos Segura; Andrew Teplyakov; Juan Carlos F. Rodriguez-Reyes
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Extraction of uranium from sulfuric acid media using amino-diamide extractants Hydrometallurgy (IF 3.338) Pub Date : 2020-12-23 Moheddine Wehbie; Guilhem Arrachart; Tamir Sukhbaatar; Xavier F. Le Goff; Iyad Karamé; Stéphane Pellet-Rostaing
Two extractants, N,N′-((octylazanediyl)bis(ethane-2,1-diyl))dioctanamide (LI) and N,N′-((octylazanediyl)bis(ethane-2,1-diyl))di-2-methylheptanamide (LII), have been synthesised in two steps starting from diethylenetriamine and involving a peptide coupling step. The efficiency and selectivity of the extractants in dodecane/octanol (95/5 v/v) toward the extraction of uranium from sulfate media have been
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A novel hydrometallurgical treatment for the recovery of copper, zinc, lead and silver from bulk concentrates Hydrometallurgy (IF 3.338) Pub Date : 2020-12-23 Juan Lorenzo-Tallafigo; Aurora Romero-García; Nieves Iglesias-González; Alfonso Mazuelos; Rafael Romero; Francisco Carranza
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Fe(II)-induced transformation of Jarosite residues generated from zinc hydrometallurgy: Influence on metals behaviors during acid washing Hydrometallurgy (IF 3.338) Pub Date : 2020-11-19 Jiahui Wu; Liyuan Chai; Zhang Lin; Yangjin Wei; Meiqing Shi; Jun Peng; Ning Peng; Xu Yan
As hazardous materials, jarosite residues pose severe challenge to the environment due to the presence of coexistent metals. Although acid washing conducted in the industrial process could recover acid extractable metals, a significant amount of strongly surface-bound, entrapped, and lattice-incorporated metals in jarosite residues could not be extracted easily. Fe(II) has received increasing attention
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A phenomenological study of the silver sulfide passivation and oxidative degradation of thiosulfate in the thiosulfate-ammonia‑copper-citrate leaching system Hydrometallurgy (IF 3.338) Pub Date : 2020-12-22 D.M. Puente-Siller; J.C. Fuentes-Aceituno; F. Nava-Alonso; A. Uribe-Salas; R. Pérez-Garibay; V.J. Martínez-Gómez
The oxidative decomposition of thiosulfate is one the main problems found in the thiosulfate leaching of precious metals. This work presents a detailed analysis of the effect of different dissolved components on the silver sulfide dissolution kinetics and efficiency faced by the thiosulfate-citrate‑copper-ammonia system. The analysis comprises the quantification of thiosulfate concentration; furthermore
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Pb-based aggregate, Ge-galena coexistence, and Ge-anglesite coprecipitate—Limitations and an improvement of germanium recovery from secondary zinc oxide via H2SO4 leaching Hydrometallurgy (IF 3.338) Pub Date : 2020-12-18 Tao Jiang; Tao Zhang; Zhihong Liu
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Synergistic solvent extraction of lanthanide ions with mixtures of D2EHPA and MIDPA in phosphonium-based ionic liquids Hydrometallurgy (IF 3.338) Pub Date : 2020-12-10 Masahiko Matsumiya; Daiki Nomizu; Yusuke Tsuchida; Yuji Sasaki
In this study, the synergistic solvent extraction of lanthanide(III) with mixtures of di-(2-ethylhexyl)phosphoric acid (D2EHPA, H2A2) and monoisodecyl phosphoric acid (MIDPA, H2B2) in phosphonium-based ionic liquid was investigated from amide acid medium. The method of slope analysis was used for the determination of the extraction reaction. In the case of D2EHPA or MIDPA single extractant system,
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Promotion of manganese extraction and flue gas desulfurization with manganese ore by iron in the anodic solution of electrolytic manganese Hydrometallurgy (IF 3.338) Pub Date : 2020-12-16 Lu Yao; Guangzhi Xin; Pengyan Pu; Lin Yang; Xia Jiang; Zhicheng Jiang; Wenju Jiang
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Removal and reuse of arsenic from arsenic-bearing purified residue by alkaline pressure oxidative leaching and reduction of As (V) Hydrometallurgy (IF 3.338) Pub Date : 2020-12-09 Wei Liu; Chang Huang; Junwei Han; Wenqing Qin
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Study of in-situ precipitation of arsenic bearing crystalline particles during the process of copper electrorefining Hydrometallurgy (IF 3.338) Pub Date : 2020-12-14 Weizhi Zeng; Hui Hu; Ruiyang Xiao; Jianguang Yang; Shan Liu; Lin Wu; Changqi Xiong; Wenxiang Guo; Yang Yan
A series of ex-situ precipitation experiments were firstly performed to investigate the effects of Eh/pH and impurity molar ratio on the transition of arsenic bearing precipitates from amorphous phase to crystalline phase. Based on the analyses of the ex-situ experiments, another series of in-situ precipitation experiments were designed and conducted to explore the effects of current density, circulation
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Aqueous arsenic and sulfur speciation analysis and solid phase characterization in the dissolution of arsenic trisulfide Hydrometallurgy (IF 3.338) Pub Date : 2020-12-13 Mohamad Mirazimi; Wenying Liu
Arsenic removal from metallurgical waste streams in the form of arsenic trisulfide (As2S3) is promising due to its high arsenic content. However, the major barrier to widely implementing the sulfidization process is the stability of arsenic trisulfide. Our previous study has shown that the release rate of arsenic and sulfur increased with pH, the dissolved oxygen concentration, and temperature. The
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Recovery of copper and the deportment of other base metals from alkaline glycine leachates derived from waste printed circuit boards (WPCBs) Hydrometallurgy (IF 3.338) Pub Date : 2020-12-11 Huan Li; Elsayed Oraby; Jacques Eksteen
E-waste has become a global risk to the environment and humans due to the improper disposal. Recently, a novel approach has been reported to effectively extract copper (Cu) from waste printed circuit boards (WPCBs) using environmentally friendly glycine solutions, with the co-extraction of other base metals. This process step is ideally positioned after the bulk of the aluminium, copper and iron is
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Leaching of lepidolite and recovery of lithium hydroxide from purified alkaline pressure leach liquor by pHosphate precipitation and lime addition Hydrometallurgy (IF 3.338) Pub Date : 2020-12-10 James Mulwanda; Gamini Senanayake; Hans Oskierski; Mohammednoor Altarawneh; Bogdan Z. Dlugogorski
This study investigated the pressure leaching of lithium and other valuable metals from lepidolite using NaOH and Ca(OH)2. The findings showed that NaOH concentration, temperature, and stirring rate are the most significant process parameters. The addition of Ca(OH)2 facilitates the leaching of lithium and minimizes the concentration of silicate and fluoride in the leach liquor by forming solid phases
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Overview of process control of novel calcification‑carbonation process for bauxite residue treatment Hydrometallurgy (IF 3.338) Pub Date : 2020-12-02 Yanxiu Wang; Ting-an Zhang; Guozhi Lv; Yan Liu; Weiguang Zhang; Qiuyue Zhao
The calcification‑carbonation method is a novel technology recovering Na2O and Al2O3 from bauxite residue through mineral transformation, which realizes the harmless treatment of bauxite residue simultaneously. It is mainly realized by two key transformation steps such as calcification transformation and carbonation transformation of the slag phase, and multiple wet process series steps. In this paper
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Separation and recovery of cesium sulfate from the leach solution obtained in the sulfuric acid baking process of lepidolite concentrate Hydrometallurgy (IF 3.338) Pub Date : 2020-12-01 Xiufeng Zhang; Zhifeng Qin; Tahani Aldahri; Sohrab Rohani; Shan Ren; Weizao Liu
Lepidolite is an important mineral resource of lithium, rubidium and cesium. Lithium, rubidium and cesium were extracted simultaneously from a lepidolite concentrate by sulfuric acid baking and water leaching. A crystallization-roasting-dissolution-solvent extraction process was developed to recover cesium from the leach solution in this study. During crystallization, leach solution was cooled from
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Kinetics and mechanism of arsenopyrite leaching in nitric acid solutions in the presence of pyrite and Fe(III) ions Hydrometallurgy (IF 3.338) Pub Date : 2020-11-27 Denis Rogozhnikov; Kirill Karimov; Andrei Shoppert; Oleg Dizer; Stanislav Naboichenko
The main sulphide minerals that serve as gold carriers in low-grade raw materials are pyrite and arsenopyrite. Traditional methods of processing such refractory raw materials rely on high-pressure or pyrometallurgical oxidisation, which destroys the crystal lattice of sulphides and releases gold particles. An alternative method of oxidation is leaching with nitric acid. The study examined the kinetics
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Attachment of Leptospirillum sp. to chemically modified pyrite surfaces. Fast and simple electrochemical monitoring of bacterial-mineral interactions Hydrometallurgy (IF 3.338) Pub Date : 2020-11-25 Albert Saavedra; J. Viridiana García-Meza; Eduardo Cortón; Ignacio González
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Removal of scorodite arsenic from gold ore in the form of AS2S3 and AS4S4 Hydrometallurgy (IF 3.338) Pub Date : 2020-11-24 Boboev Ikromdzhon (Ikromjon) Rakhmonovich (Rahmonovich); Tabarov Farrukh Saadievich
This paper discusses the removal of arsenic scorodite from the gold ore. Kinetic studies on the possibility of removal of arsenic in a compact shape of arsenic sulfide were carried out, which occupies a small volume. The reagent reaction order and activation energy are calculated. The limiting stage of the process occurred in the intradiffusion region, i.e. the rate of the process limits the diffusion
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Gold leaching from oxide ores in alkaline glycine solutions in the presence of permanganate Hydrometallurgy (IF 3.338) Pub Date : 2020-11-19 E.A. Oraby; J.J. Eksteen; G.M. O'Connor
In this study, the effect of using strong oxidants with alkaline glycine solutions on the leach rate and recovery of gold was studied in the absence of cyanide. Prior research indicated that when using only alkaline glycine and air at ambient temperature in the absence of catalysts, leaching times would be too long for conventional agitated tank leaching of ores. The ores used in this study were from
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A process for beneficiation of low-grade manganese ore and synchronous preparation of calcium sulfate whiskers during hydrochloric acid regeneration Hydrometallurgy (IF 3.338) Pub Date : 2020-11-21 Mengen Lei; Baozhong Ma; Dongya Lv; Chengyan Wang; Edouard Asselin; Yongqiang Chen
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Simultaneous recovery of copper and manganese from exotic copper ore in acid chloride media using cane molasses as the reducing agent Hydrometallurgy (IF 3.338) Pub Date : 2020-11-20 L. Velásquez-Yévenes; Ricardo Lasnibat
Chile is host to one of the most considerable Cu resources in the world. The primary source of Cu is from porphyry deposits. However, associated “exotic-Cu” deposits are also significant in the Atacama Desert of northern Chile. The critical processing issue for these ores is that they are refractory to dissolution under acidic and oxidative conditions, and consequently their dissolution kinetics are
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Process analysis and study of factors affecting the lithium carbonate crystallization from sulfate media during lithium extraction Hydrometallurgy (IF 3.338) Pub Date : 2020-11-20 Hongting Liu; Gisele Azimi
Lithium carbonate is the primary product of the lithium extraction process and is an important compound for the battery making industry. A major step in the conventional sulfuric acid extraction of lithium from mineral ore is the precipitation of lithium carbonate from lithium sulfate media by sodium carbonate addition. Because of the high solubility of lithium carbonate in water and challenges with
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Facile one-step synthesis of a Co3O4- and CNT-doped 3D-Ti/PbO2 electrode with a high surface for zinc electrowinning Hydrometallurgy (IF 3.338) Pub Date : 2020-11-19 Xuanbing Wang; Ruidong Xu; Suyang Feng; Chen Chen; Buming Chen
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Study on the solvent extraction of thioarsenite in alkaline solutions with transformed quaternary ammonium salt Hydrometallurgy (IF 3.338) Pub Date : 2020-11-19 Lei Tian; LinQing Huang; Jiacong Xu; Xiaoqiang Yu; Zhifeng Xu
Under the advocacy of the sustainable development concept, the extraction process and reaction mechanism for arsenic in alkaline solution were studied with the aim of optimizing the alkaline leaching process of high‑arsenic copper smelting ash and promoting the recovery and harmlessness of arsenic. At 25 °C, the extractant methyltrioctylammonium underwent 6–8 conversions of Na2CO3 solution with a concentration
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Extraction of platinum(IV) by hydrophobic deep eutectic solvents based on trioctylphosphine oxide Hydrometallurgy (IF 3.338) Pub Date : 2020-11-19 Ronghao Liu; Yuqi Geng; Zhijian Tian; Ning Wang; Min Wang; Guanju Zhang; Yanzhao Yang
In this paper, trioctylphosphine oxide (TOPO) was combined with some environmental-friendly molecules to form hydrophobic deep eutectic solvents (HDESs) for platinum (Pt) extraction from secondary resources. Due to the formation of HDESs, the loss of TOPO content in the aqueous solution obviously decreased. Then, the extraction behaviors under different vibrating time, acidity and salinity (NaCl/NaBr)
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Intensification of carbonate scandium leaching from red mud (bauxite residue) Hydrometallurgy (IF 3.338) Pub Date : 2020-11-18 Vladimir Rychkov; Maxim Botalov; Evgeny Kirillov; Sergey Kirillov; Vladimir Semenishchev; Grigory Bunkov; Denis Smyshlyaev
Bauxite residue (red mud) is a promising anthropogenic source of scandium because only at the aluminum plants of Ural region (Russia) nearly 150 tons of this trace metal appears in the waste dumps annually. This work describes a method of red mud carbonization by carbon dioxide that results on the one hand to scandium leaching and on the other hand decrease of toxicity of the red mud due to conversion
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Solvent extraction of lanthanides(III) from chloride and nitrate media with di(2-ethylhexyl) phosphoric acid and ionic liquids in three-component biphasic solvent systems Hydrometallurgy (IF 3.338) Pub Date : 2020-11-18 V.V. Belova; M.M. Petyaeva; J.V. Tsareva; A.E. Kostanyan
In this paper, as an alternative to the traditional extraction systems, multicomponent biphasic solvent systems used in liquid-liquid chromatography are suggested for application in hydrometallurgy. Three-component biphasic solvent system (1:1:1) consisting of water, hexane, and isopropyl alcohol was tested for the extraction of lanthanides(III) from chloride and nitrate media by adding different extractants
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Process development for the separation of niobium and tantalum from fluoride medium using trioctyl amine and application of Taguchi's method to optimize solvent extraction parameters Hydrometallurgy (IF 3.338) Pub Date : 2020-11-17 Snehasis Dutta; S. Mukhopadhyay; Samyuktha Gaddam; K.T. Shenoy; K.V. Mirji
Niobium and tantalum have a wide range of application in various industries such as steel and electronic industry. The conventional tributyl phosphate based solvent extraction process for producing pure niobium and tantalum generates solid waste which is a mixture of fluoride with other anions like sulphate, chloride and acetate. This waste has no industrial application and requires effective disposal
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Enhanced photocatalytic reaction and mechanism for treating cyanide-containing wastewater by silicon-based nano-titania Hydrometallurgy (IF 3.338) Pub Date : 2020-10-27 Yang Zhang; Yali Zhang; Yaoguo Huang; Xia Chen; Hongyou Cui; Ming Wang
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Increasing the heap leach efficiency of Uşak Kışladağ gold ore using nut shell as permeability aid Hydrometallurgy (IF 3.338) Pub Date : 2020-11-05 Serdar Yilmaz; Ayhan Ali Sirkeci; Mehmet Bilen; Sait Kizgut
The objective of this study is to increase the gold recovery from the gold ore heaps of Uşak Kışladağ Gold Company adding nut shell as percolation enhancer. In the first step of this study, bottle roll experiments were carried out on the ore sample crushed below 18 mm, 10 mm, 2.36 mm and 74 μm. Gold recovery values obtained for bottle roll tests were 53%, 55%, 65% and 85% respectively for the particle
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Development of a co-precipitation process for the preparation of magnesium hydroxide containing lithium carbonate from Li-enriched brines Hydrometallurgy (IF 3.338) Pub Date : 2020-10-28 Celso Quintero; J. Matthias Dahlkamp; Felipe Fierro; Troy Thennis; Yinzhi Zhang; Álvaro Videla; René Rojas
Ongoing research to develop a new generation of materials to achieve a more reliable and higher energy density lithium-ion batteries has attracted working groups attention worldwide in academia and industry. Products like lithium carbonate or lithium hydroxide are fundamental as the main feedstock for future materials. Recently, metal-atom substituted cathode materials with various metals has proved
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A novel method to extract V3+ from iron vanadate spinel minerals by one leaching step Hydrometallurgy (IF 3.338) Pub Date : 2020-10-29 Xuexin Chen; Baijun Yan
To alleviate the energy consumption and the effluent of traditional oxidizing roasting and leaching process of vanadium extraction, a novel method to extract the vanadium from iron vanadate spinel mineral (Fe3-xVxO4) by one leaching step was developed. In this method, the Fe powder was found as a synergist of oxalic acid to leach the vanadium as [V(C2O4)3]3− complex under hydrothermal condition. With
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Efficiency and sustainable leaching process of manganese from pyrolusite-pyrite mixture in sulfuric acid systems enhanced by microwave heating Hydrometallurgy (IF 3.338) Pub Date : 2020-11-05 Shunda Lin; Lei Gao; Yong Yang; Jin Chen; Shenghui Guo; Mamdouh Omran; Guo Chen
Recently, with the decrease in the quality of manganese resources, the efficient use of low-quality manganese ore resources has attracted widespread attention. At present, pyrite is often used as reducing agent to recover Mn(IV) in industrialization. However, the passivation of pyrite in the leaching reaction process will lead to a decreased reaction efficiency. Hence, in this study, microwave heating
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Separation of thorium and uranium from xenotime leach solutions by solvent extraction using primary and tertiary amines Hydrometallurgy (IF 3.338) Pub Date : 2020-10-22 Nguyen Trong Hung; Le Ba Thuan; Tran Chi Thanh; Masayuki Watanabe; Do Van Khoai; Nguyen Thanh Thuy; Hoang Nhuan; Pham Quang Minh; Tran Hoang Mai; Nguyen Van Tung; Doan Thi Thu Tra; Manis Kumar Jha; Jin-Young Lee; Rajesh Kumar Jyothi
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In-situ reduction of Au(S2O3)23− for efficient recovery of gold with magnetically separable shell-core structured MoS2@Fe3O4 composite Hydrometallurgy (IF 3.338) Pub Date : 2020-10-27 Kaige Sun; Shangjian Mao; Weiquan Zhan; Chang Liu; Feifei Jia; Shaoxian Song
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Recovery of gold from waste solutions using a new RFB resin Hydrometallurgy (IF 3.338) Pub Date : 2020-10-29 Yong Xiang; Shuaiwei Ding; Xiangmeng Chen; Chunmei Cao; Jingping Sun; Li Xu; Guoji Liu
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Study on preparation and recovery of cobalt hydroxide and cobalt carbonate Hydrometallurgy (IF 3.338) Pub Date : 2020-11-02 Shengnan Lin; Liping Niu; Xijuan Pan; Zhipeng Liang; Tingan Zhang
In this paper, the potential-pH diagrams of Co-Cl-H2O/Co-C-Cl-H2O systems under the temperature of 25°C were drawn through the basic potential-pH principle with a number of thermodynamic data, and the predominant area of Co(OH)2/CoCO3 in the Co-Cl-H2O/Co-C-Cl-H2O systems which existed stably in the agueous solution were obtained. According to the potential-pH diagram of Co-Cl-H2O/Co-C-Cl-H2O systems
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A review on extractive metallurgy of tantalum and niobium Hydrometallurgy (IF 3.338) Pub Date : 2020-10-09 A. Shikika; M. Sethurajan; F. Muvundja; M.C. Mugumaoderha; St. Gaydardzhiev
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Selective leaching of vanadium from vanadium-chromium slag using sodium bicarbonate solution and subsequent in-situ preparation of flower-like VS2 Hydrometallurgy (IF 3.338) Pub Date : 2020-10-09 Jing Wen; Tao Jiang; Shapkat Arken
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Eco-friendly and economical extraction of gold from a refractory gold ore in iodide solution using persulfate as the oxidant Hydrometallurgy (IF 3.338) Pub Date : 2020-10-16 Qiang Wang; Ting Liu; Yunlong Chen; Shuliang Chen; Xuecong Qin; Yanhe Nie; Futing Zi
Iodine–iodide leaching is an effective and environmentally friendly gold extraction method that is expected to replace cyanidation. However, as the price of iodine is relatively high, for the industrial application of iodine–iodide leaching, decreasing the required amount of iodine is important to reduce production costs. In this study, persulfate was used to replace iodine as the oxidant for the extraction
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Impact of the plutonium content on dissolution kinetics of (U1-xPux)O2±δ powders Hydrometallurgy (IF 3.338) Pub Date : 2020-10-21 Yannis Ziouane; Bénédicte Arab-Chapelet; Gilles Leturcq
Several (U1-xPux)O2±δ powders with different morphologies and different plutonium contents were synthetized using a sol-gel route. All the powders were fully characterized to quantify their structural parameters. After understanding and verification of the morphological effects on mixed oxide dissolution, this study consists of quantification of effect of plutonium content on dissolution kinetics using
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A review of the recovery of precious metals using ionic liquid extractants in hydrometallurgical processes Hydrometallurgy (IF 3.338) Pub Date : 2020-09-29 Thidarat Wongsawa; Natthapol Traiwongsa; Ura Pancharoen; Kasidit Nootong
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Optimization of thermal pre-treatment for simultaneous and efficient release of both Co and Mo from used CoMo catalyst by bioleaching and their mechanisms Hydrometallurgy (IF 3.338) Pub Date : 2020-10-21 Can Qian; Jia Wang; Kai Yan; Huichao Chu; Bingyang Tian; Baoping Xin
There are a number of attempts to release and recover the valuable metals from spent refinery catalysts by bioleaching, and the heat pretreatment is widely used to remove the oil-like compounds for better bioleaching performance. However, the irrational selection of high calcinations temperature of 600–800 °C not only resulted in high energy consumption but also might be cause lower bioleaching efficiencies
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Effect of lead ions on gold dissolution in the Cu2+ - en - S2O32− system Hydrometallurgy (IF 3.338) Pub Date : 2020-10-22 Xuecong Qin; Futing Zi; Xianzhi Hu; Qiang Wang; Yunlong Chen; Shuliang Chen; Chaowu Wang; Yi He; Yan Zhang
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Silver leaching from miargyrite (AgSbS2) sulfosalt in the system S2O32--Ca(OH)2: Kinetic analysis and experimental design approach Hydrometallurgy (IF 3.338) Pub Date : 2020-08-25 A.M. Teja-Ruiz; I.A. Reyes-Domínguez; O.A. Acevedo-Sandoval; E.G. Palacios-Beas; M.U. Flores-Guerrero; M. Pérez-Labra; J.C. Juárez-Tapia
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A clean process for chloridion removal from manganese sulfate electrolyte using bismuthyl sulfate Hydrometallurgy (IF 3.338) Pub Date : 2020-10-21 Baiqi Sun; Xuheng Liu; Weifeng Liu; Duchao Zhang; Lin Chen; Tianzu Yang
In this study, a novel, efficient, and eco-friendly method is proposed to precipitate Cl− as BiOCl from MnSO4 electrolyte using (BiO)2SO4 as the chloride removal agent. The effects of different factors on the transformation and activation of Cl− removal agent, chloride precipitation, recovery and recycling, and purification processes were investigated. Increasing the L/S ratio could promote transformation
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A modified process for leaching of ilmenite and production of TiO2 nanoparticles Hydrometallurgy (IF 3.338) Pub Date : 2020-10-22 Vahid Kordzadeh-Kermani; Mahin Schaffie; Hassan Hashemipour Rafsanjani; Mohammad Ranjbar
Titanium dioxide is an important material with a wide range of applications. Different methods and processes have been introduced and applied to produce pure TiO2 from available titanium ores and mineral sources. This paper describes the production of nano-sized titanium dioxide (TiO2) from ilmenite concentrate provided by the main Iranian Ilmenite processing complex. Ilmenite (FeTiO3) concentrate
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Effect of water salinity on the bioleaching of copper, nickel and cobalt from the sulphidic tailing of Golgohar Iron Mine, Iran Hydrometallurgy (IF 3.338) Pub Date : 2020-10-23 Seyed Mohammad Sadeghieh; Ali Ahmadi; Mohammad Raouf Hosseini
This study investigates the influence of salinity on the bioleaching efficiency of a copper‑nickel‑cobalt bearing sulphidic tailing obtained from Golgohar iron ore desulphurization plant (Sirjan, Iran). The effects of several critical parameters including, suspension pH, nutrient medium, microorganism type, and pulp density were investigated on the extraction of copper, cobalt and nickel from the sulphidic
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The synthesis of tire grade ZnO from top submerged lance (TSL) furnace flue dust generated in Cu recycling industries Hydrometallurgy (IF 3.338) Pub Date : 2020-10-22 Janaka Jayamini Wijenayake; Ho-Sang Sohn
TSL flue dust is a waste residue, rich in Zn, generating from the pyrometallurgical process of Cu recycling and constitutes a potential raw material for ZnO production. In order to valorize this waste by introducing a novel process, its selective impurity removal by integrating different commercially viable hydrometallurgical technologies was investigated on both laboratory and pilot scale. Special
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Zinc recovery from dilute ammoniacal media using an integrated solvent extraction and electrolysis process Hydrometallurgy (IF 3.338) Pub Date : 2020-10-24 Jia Tang; Shijun Liu; Chaozhen Zheng; Huiping Hu; Xiaobo Ji; Jiugang Hu
Zinc(II) was recovered from dilute ammoniacal media through an integrated process combining solvent extraction and electrolysis with ammonia stripping. Zinc ions were firstly enriched into organic phase at pH 7.56 through synergistic extraction between β-diketone and TBP or Cyanex 923. The concentration of extracted zinc(II) increased at pH < 7.56, but clearly decreased at pH 7.56–9.98. The extracted
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Investigating the dissolution of iron sulfide and arsenide minerals in deep eutectic solvents Hydrometallurgy (IF 3.338) Pub Date : 2020-10-24 Jennifer M. Hartley; Ahmed Z.M. Al-Bassam; Robert C. Harris; Gero Frisch; Gawen R.T. Jenkin; Andrew P. Abbott
The speciation of iron and arsenic species in DES media after electrodissolution of five different iron sulfide and arsenide minerals was determined via UV–Vis and EXAFS spectroscopy. Iron formed FeIII O-donor complexes, whilst arsenic formed cationic AsV-O-donor complexes. The ethylene glycol component of the DES was observed to play a role in the coordination of these species. The dissolution behaviour
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Novel process for the extraction of lithium carbonate from spent lithium-containing aluminum electrolytes by leaching with aluminum nitrate and nitric acid Hydrometallurgy (IF 3.338) Pub Date : 2020-10-21 Shaohua Wu; Wenju Tao; Yanchen Zheng; Youjian Yang; Jiangyu Yu; Jingbo Cui; Yu Lu; Zhongning Shi; Zhaowen Wang
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Recovery of chromium from vanadium precipitated solution by precipitation with lead salt and leaching with sodium carbonate Hydrometallurgy (IF 3.338) Pub Date : 2020-10-16 Minge Yang; Xuewen Wang; Yuqi Meng; Mingyu Wang
The recovery of chromium from vanadium precipitated solution obtained by adding Ca(OH)2 into the chromium-containing vanadate solution and ball milling was investigated by precipitation with lead salt and leaching with sodium carbonate. It has been found that chromium can be effectively enriched by adding PbCO3. The precipitate is the mixture of PbCO3 and PbCrO4∙PbO. The concentration of Cr residue
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