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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
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Recovery of high-grade cobalt oxide from zinc plant residue (ZPR) generated at zinc processing plants Hydrometallurgy (IF 4.8) Pub Date : 2024-04-12 Sunil Kumar, Shavi Agrawal, Kiran Kumar Rokkam, Sudhakar Yadav, Raj Kumar Dishwar
In the present study, a method for cobalt recovery from Zinc Plant Residue (ZPR) has been developed. First, the residue was leached in a dilute sulfuric acid solution. >90% cobalt and 95% zinc were leached in two hours at room temperature. Then, leach liquor was purified before cobalt precipitation. First, copper and cadmium were removed using zinc dust. >99% copper and 80% cadmium were removed in
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Effect of hydroxylammonium chloride as a reductant for hydrochloric acid leaching of valuable metals from discarded lithium-ion batteries Hydrometallurgy (IF 4.8) Pub Date : 2024-04-11 Maria del Mar Cerrillo-Gonzalez, Maria Villen-Guzman, Brahim Arhoun, Cesar Gomez-Lahoz, Carlos Vereda-Alonso
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Gold recovery from cyanidation residue by chloride leaching and carbon adsorption – Preliminary results from CICL process Hydrometallurgy (IF 4.8) Pub Date : 2024-04-08 Anssi Karppinen, Sipi Seisko, Laura Nevatalo, Benjamin P. Wilson, Kirsi Yliniemi, Mari Lundström
There is a vast amount of globally underutilized low-grade mine tailings and leach residues, including those from primary processing of gold. In this research, the target is to recover the remaining gold (10.9 g/t) from weathered refractory iron-rich residue that had previously been subject to autoclave oxidation, subsequent cyanidation in a conventional carbon-in-leach (CIL) circuit as well as storage
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Solvent extraction of Pt, Ru, and Ir using Cyanex 923 in chloride media to develop a recycling route for spent polymer electrolyte membrane (PEM) electrolyzers Hydrometallurgy (IF 4.8) Pub Date : 2024-04-08 Ulziikhuu Otgonbayar, Lesia Sandig-Predzymirska, Alexandra Thiere, Alexandros Charitos
The development of an efficient recycling route for spent polymer electrolyte membrane (PEM) electrolyzers is essential for the recovery of platinum-group metals (PGMs). Among the other refining processes, solvent extraction is a highly selective technique that can provide high-purity products. Moreover, the extraction behavior of Pt, Ru, and Ir from the PEM electrocatalysts is not studied extensively
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Characterization of the solid leach residues from the iodine-assisted chalcopyrite leaching in ferric sulfate media Hydrometallurgy (IF 4.8) Pub Date : 2024-04-07 Ronny Winarko, David B. Dreisinger, Akira Miura, Yuken Fukano, Wenying Liu
Chalcopyrite dissolution in ferric sulfate media at ambient conditions is slow. The addition of iodide has been found to significantly improve chalcopyrite leaching in the potential range where triiodide (I) or diiodine (I) is the predominant species. In the iodine-assisted chalcopyrite leaching process, elemental sulfur was proposed to be the form of sulfur product while iron precipitation was also
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Editorial: Special Issue for the 24th International Biohydrometallurgy Symposium (IBS 2022) Hydrometallurgy (IF 4.8) Pub Date : 2024-04-02 Anna H. Kaksonen, Ka Yu Cheng, Jochen Petersen
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Evolution of pore structure and reactive transport parameters during acid leaching of sandstone uranium ore Hydrometallurgy (IF 4.8) Pub Date : 2024-04-01 Shuai Wang, Meng Lian, Dexin Ding, Guicheng He, Haiying Fu
The changes in the micro-scale pore structure during the acid leaching of sandstone uranium ore significantly affect its reactive transport parameters, which, in turn, directly influence the leaching efficiency of uranium. Consequently, understanding and managing the dynamic evolution of the pore structure of sandstone at micro-scale during acid leaching is beneficial for enhancing the leaching efficiency
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Continuous recovery of lithium and boron from Jezechake Salt Lake brine using fixed-bed adsorbers Hydrometallurgy (IF 4.8) Pub Date : 2024-04-01 Mengxiang Lu, Yao Miao, Ying Yang, Ping Li
Jezechake Salt Lake brine in China is rich in lithium ions coexisting with relatively high concentrations of carbonate and borate anions. Both carbonate and borate anions have a pH-buffering ability to accept the exchanged H ions of lithium ion sieves, enhancing the adsorption process of Li ions. When Jezechake Salt Lake brine passes through a titanium-type ion-sieve-packed column, good lithium breakthrough
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Lead removal from tin chloride solution by barium sulfate and coprecipitation of (BaxPby)(SO4)2 for the processing of Pb[sbnd]Sn smelter slag Hydrometallurgy (IF 4.8) Pub Date : 2024-03-20 Lining Yu, Huazhen Cao, Huibin Zhang, Junfeng Kong, Weilun Qian, Anyang Tang, Wenyu Feng, Guoqu Zheng
Owing to the characteristics of mineral paragenesis (equilibrium sequence of mineral phases), the hydrochloric acid leach liquors of Sn ores and Sn-containing waste materials typically contain large amounts of Pb. In this study, barium sulfate coprecipitation was employed to efficiently remove Pb from a tin chloride solution. The lead removal efficiency, reaction mechanism, and limitations were investigated
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The influence of sodium fluoride on the dissolution kinetics of metallic titanium in citric acid solution using the rotating disc method Hydrometallurgy (IF 4.8) Pub Date : 2024-03-20 Mahmoud Motasim, Salih Aydoğan, Tevfik Agacayak, Yasin Ramazan Eker, Amin El-gak, Ahmed A.S. Seifelnassr
This study reports the effect of sodium fluoride on the dissolution kinetics of pure metallic titanium in a citric acid solution. The effects of sodium fluoride concentration, citric acid concentration, temperature, stirring speed, and disc surface area were examined. The dissolution rate of titanium increases strongly with increasing citric acid and sodium fluoride concentrations. Fluoride ions react
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The impact of apatite on sulfuric acid baking of a monazite concentrate and the benefit of goethite addition on rare earth leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-03-16 John Demol, Elizabeth Ho, Karin Soldenhoff, Gamini Senanayake
Sulfuric acid baking of monazite ((Ce,La,Th)PO) bearing ores is one of the major processes used in commercial production of rare earth elements. In hydrothermal vein type rare earth deposits, apatite is often found together with monazite. Rare earth enriched fluorapatite ores may also contain significant amounts of rare earths hosted in monazite. An understanding of the effect of apatite on the sulfuric
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Effect of pretreatment methods on the selective leaching of rare earth elements from NdFeB permanent magnets using deep eutectic solvents Hydrometallurgy (IF 4.8) Pub Date : 2024-03-15 Seojin Heo, Rina Kim, Ho-Sung Yoon, Chul-Joo Kim, Kyeong Woo Chung, Sujeong Lee
In this study, deep eutectic solvents (DESs) were employed as environmentally friendly alternatives of inorganic acid to selectively leach REEs from waste NdFeB magnets. Three DESs were tested, effective for light REE leaching, and preliminary experiments were conducted to study the selective leaching of REEs, using synthetic materials, NdO, Fe, FeO, and FeO. The findings suggest that neodymium and
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Extraction of gallium from carbon concentrate - Aluminum industry waste Hydrometallurgy (IF 4.8) Pub Date : 2024-03-06 Vladimir Losev, Olga Buyko, Alexander Shimanskii, Yakov Kazantsev, Sergey Metelitsa, Elena Borodina, Mingming Li
A complex approach to the extraction of gallium from a carbon concentrate (CC), a waste product of the aluminum industry, was considered. Ashing of CC made it possible to remove the main component - carbon and obtain ash, which is an oxide mineral-like compound, from which gallium was leached with solutions of inorganic acids and their mixtures. The maximum degree of leaching (98%) of gallium was achieved
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Effect of zinc(II) and caustic content on the decomposition of sodium aluminate solutions and relevance to the Bayer process Hydrometallurgy (IF 4.8) Pub Date : 2024-03-06 Lei Xu, Wen-mi Chen, Yan-jun Zhang, Shang Fan, Jian-qing Pi, Ming-li Wang
The impact of zinc (Zn) on the seed decomposition process of sodium aluminate solution at different caustic concentrations was investigated. The results showed that as the concentration of Zn(II) in sodium aluminate solution increased from 0 to 1000 mg/L, the decomposition efficiency of the solution and average grain size of the resulting aluminum tri-hydroxide (ATH) changed little at a caustic concentration
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Separation of trace amount of nickel from cobalt sulphate solutions using a synergistic solvent extraction system consisting of dinonylnaphthalene sulfonic acid (DNNSA) and decyl 4-picolinate (4PC) Hydrometallurgy (IF 4.8) Pub Date : 2024-03-03 Shiyu Xiao, Li Zeng, Xinsheng Wu, Wenjuan Guan, Yixiong Chen, Shengxi Wu, Qinggang Li, Zuoying Cao, Mingyu Wang, Guiqing Zhang
The current methods for separation of nickel from cobalt sulphate solutions have drawbacks of long flowsheets, release of large volumes of wastewater and incomplete separation of two metals. A synergistic solvent extraction (SSX) system consisting of dinonylnaphthalene sulfonic acid (DNNSA) and decyl 4-picolinate (4PC) is proposed in this work to extract nickel from cobalt sulphate solutions selectively
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Effect of alkali metal nitrates on palladium dissolution in nitric acid solutions Hydrometallurgy (IF 4.8) Pub Date : 2024-02-26 Ming Tian, Zhanpeng Yan, Minghui Liu, Tianyan Xue, Ying Yu, Hui Zhang, Tao Qi
Hydrometallurgical unit operations are typically used to recover palladium (Pd) from its ores and secondary resources with high selectivity owing to their low energy consumption, cost effectiveness, and volume flexibility. Herein, diluted HNO solutions with added nitrate salts were used to dissolve Pd powders. Moreover, solutions of nitrates with same valency cations (such as HNO, LiNO, NaNO, KNO,
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Bioleaching for metals removal from mine tailings flotation fractions Hydrometallurgy (IF 4.8) Pub Date : 2024-02-20 Tamara A. Schueler, Axel Schippers, Daniel Goldmann
This study investigated two bioleaching strategies for removing heavy metals from three mine tailings fractions generated by flotation processes. On the one hand, bioleaching with microbial consortia of acidophilic mesophiles and moderate thermophiles efficiently extracted Co, Cu, Zn, and As, while the leaching of Pb was facilitated through the use of organic acids produced by a heterotrophic bacterium
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Leaching of catalyst platinum from cured silicone elastomers: A preliminary study for comparing reagents Hydrometallurgy (IF 4.8) Pub Date : 2024-02-15 Tobias Feix, Aseel Ali Fadhil, Dennis Troegel
Addition curing systems involve two-part silicones which require the mixture of a silicone polymer with a catalyst to initiate the cure. Platinum is the most commonly used metal catalyst for addition curing of silicones by hydrosilylation which involves the crosslinking by the addition reaction of silicon hydride species to unsaturated bonds, mainly CC, but also CO or CN double bonds. After crosslinking
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Rotating disc method to study the dissolution kinetics of copper metal in citric acid and hydrogen peroxide Hydrometallurgy (IF 4.8) Pub Date : 2024-02-07 Mahmoud Motasim, Salih Aydoğan, Babiker Ali, Tevfik Agacayak
This study reports the kinetics of copper metal dissolution in citric acid-hydrogen peroxide solution using the rotating disc method. The effect of the concentration of citric acid as well as hydrogen peroxide, stirring speed, disc surface area, and temperature was investigated. The concentration of hydrogen peroxide (0.25–1.5 mol/L) has a strong effect on the dissolution rate (mg/min) of copper with
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Investigation of the use of foams for silver leaching using the thiosulfate‑copper(II)-ammonia system in the context of e-waste recycling Hydrometallurgy (IF 4.8) Pub Date : 2024-02-06 Cyriaque Bruez, Anne Rousseau, Grégory Lefèvre, Cécile Monteux
Due to its physical properties, metallic silver is present in numerous electronic wastes. Its recycling requires selective extraction, which involves leaching of silver as the first step. This work focusses on leaching silver with Cu(II)/NH/SO which has been widely used for gold leaching. As recently shown for the leaching of copper, using foams whose aqueous phase consists of leaching chemicals is
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Boron extraction by aliphatic mono- and di-hydroxy alcohols from a representative continental brine Hydrometallurgy (IF 4.8) Pub Date : 2024-02-06 Abdoul Fattah Kiemde, Jérôme Marin, Victoria Flexer, Alexandre Chagnes
The extraction properties of mono-hydroxy alcohols (2-butyl-1-octanol, 2-ethyl-1-hexanol, 1-octanol) and di-hydroxy alcohols (2-ethyl-1,3-hexanediol, 2-butyl-2-ethyl-1,3-propanediol, 2-methyl-2,4-pentanediol) towards boron, potassium, lithium, sodium, calcium and magnesium ions were investigated as a function of pH and phase volume ratio (O/A) by considering an aqueous phase with a composition mimicking
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Extraction of lithium and phosphorus from amblygonite using calcium sulfate roasting and water leaching Hydrometallurgy (IF 4.8) Pub Date : 2024-02-03 Qingfeng Zhou, Xiangdong Ma, Xunhui Xiong
This work proposes the roasting of amblygonite with calcium sulfate followed by water leaching to extract lithium and phosphorus. Various roasting parameters including roasting temperature, the mass ratio CaSO/ore, roasting time as well as leaching parameters, such as the liquid/solid ratio, temperature and time, have been carefully investigated. The lithium extraction efficiency can be as high as
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Extraction of magnesium from mine tailings for carbon dioxide mineralization: A preliminary study of the effect of ammonium sulfate to tailings ratio on products and yield Hydrometallurgy (IF 4.8) Pub Date : 2024-02-02 Marjut Mälkki, Sampo Mäkikouri
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Alkaline in-situ leaching of uranium in low-permeability sandstone: An experimental study using online low field nuclear magnetic resonance (LF-NMR) spectroscopy on multiphase response Hydrometallurgy (IF 4.8) Pub Date : 2024-01-26 Tong Zhang, Haitao Zhang, Xin Yang, Junlin Mao, Xuebin Su, Yang Liu, Guoliang Zhou, Zhizheng Xie
Uranium leaching was influenced by multiphase flow and geological structure during in-situ recovery of uranium (ISRU). In this study, the characteristics of multiphase flow and pore structure responding to the alkaline ISRU was investigated, using a real-time triaxial coupling nuclear magnetic resonance experiment system. The component of leaching solute, flow regime and pore structure evolution was
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Sulfur dioxide as a thiourea stabilizer in the Carbon-in-Leach (CIL) process using a hydrodynamic cavitation-reactor for gold recovery from dump tailings Hydrometallurgy (IF 4.8) Pub Date : 2024-01-19 I.R. Boboev, F.S. Tabarov, S. Vorotilo
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Hydrometallurgical processing of mining-impacted soils: A preliminary study to recover copper salts by leaching with seawater and crystallization Hydrometallurgy (IF 4.8) Pub Date : 2024-01-17 Sonia Cortés, Pablo Maluenda-León, Liey-si Wong-Pinto, Javier I. Ordóñez
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Kinetics and mechanism of selective leaching of bismuth from molybdenite and bismuthinite mixed ore Hydrometallurgy (IF 4.8) Pub Date : 2024-01-16 Yingpeng Xu, Xuheng Liu, Zhongwei Zhao, Xingyu Chen, Jiangtao Li, Lihua He, Fenglong Sun
In the conventional beneficiation process for handling mixed ore containing molybdenite and bismuthinite, the co-extraction issues involving molybdenum and bismuth, exemplified by mutual content of molybdenite and bismuthinite, may lead to the shutdown of the production line. Under acidic conditions, Bi3+ and Cl− can form stable coordination complex anions, whereas Mo4+, Mo6+, and Cl− do not exhibit
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Lithium recovery from geothermal brines: An investigation into radioactive nuclide uptake on lithium‑manganese-oxide (LMO) granules Hydrometallurgy (IF 4.8) Pub Date : 2024-01-14 Lena Kölbel, Klemens Slunitschek, Elif Kaymakci, Thomas Kölbel, Rebekka Reich, Jochen Schneider
Due to the growing demand for lithium, the exploitation of non-conventional lithium sources such as Li-bearing geothermal brines is currently on the rise. These brines contain up to 200 mg L−1 of lithium along with a diverse range of other dissolved elements, including naturally occurring radionuclides. In this study, data from a radiochemical monitoring process performed during the pilot plant testing