Hydrometallurgy Journal Impact Factor & Information

Publisher: Elsevier

Journal description

Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.

Current impact factor: 2.22

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 2.224
2012 Impact Factor 2.169
2011 Impact Factor 2.027
2010 Impact Factor 1.917
2009 Impact Factor 2.078
2008 Impact Factor 1.747
2007 Impact Factor 1.324
2006 Impact Factor 1.227
2005 Impact Factor 1.163
2004 Impact Factor 1.088
2003 Impact Factor 1.14
2002 Impact Factor 1.087
2001 Impact Factor 0.654
2000 Impact Factor 0.846
1999 Impact Factor 0.693
1998 Impact Factor 0.662
1997 Impact Factor 0.575
1996 Impact Factor 0.483
1995 Impact Factor 0.555
1994 Impact Factor 0.59
1993 Impact Factor 1.255
1992 Impact Factor 0.811

Impact factor over time

Impact factor

Additional details

5-year impact 2.34
Cited half-life 8.00
Immediacy index 0.22
Eigenfactor 0.01
Article influence 0.54
Website Hydrometallurgy website
Other titles Hydrometallurgy (Online)
ISSN 0304-386X
OCLC 38901127
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details


  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-print allowed on any website or open access repository
    • Voluntary deposit by author of authors post-print allowed on authors' personal website, arXiv.org or institutions open scholarly website including Institutional Repository, without embargo, where there is not a policy or mandate
    • Deposit due to Funding Body, Institutional and Governmental policy or mandate only allowed where separate agreement between repository and the publisher exists.
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
    • Set statement to accompany deposit
    • Published source must be acknowledged
    • Must link to journal home page or articles' DOI
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • S.Yu. Skripchenko · A.L. Smirnov · A.M. Pastukhov · M.V. Chernyshov
    [Show abstract] [Hide abstract]
    ABSTRACT: The process of uranium stripping from tri-n-butyl phosphate by hydrofluoric acid solutions with the addition of hydrazine was investigated in the temperature range of 20 to 60 °C. Uranium was selectively precipitated in the form of a hydrazine uranyl fluoride complex when stripped from TBP by HF solutions with the addition of hydrazine. The uranium precipitation increased with increasing N2H4/U molar ratio in the range of 1 to 3 and with increasing holding time. Uranium tetrafluoride was obtained by the thermal decomposition of the hydrazine uranyl fluoride complex in a hydrogen stream. The uranium content in UF4 is 76%. The obtained uranium tetrafluoride is a high-purity product and meets all requirements imposed on UF4 at conversion plants. Thus, the stripping method provides a reduction of uranium processing operations to uranium tetrafluoride.
    Hydrometallurgy 10/2015; 157:179-183. DOI:10.1016/j.hydromet.2015.08.015
  • [Show abstract] [Hide abstract]
    ABSTRACT: The complex processing of MoS3/WS3 precipitates was investigated in this work. The experimental work demonstrated that the method was highly efficient for extracting tungsten and molybdenum from MoS3/WS3 precipitates at low operating costs. Selective dissolution of molybdenic acid in hydrochloric acid was used to separate the molybdenum and tungsten. Molybdenum liquid extraction by tri-n-butyl phosphate was used to reduce the consumption of hydrochloric acid. Tungsten was obtained in the form of tungstic acid with less than 0.5% molybdenum content, which is suitable for the steel industry. High-grade MoO3, which was obtained from roasting the ammonium paramolybdate, can be used for the production of pure metal.
    Hydrometallurgy 10/2015; 157:78-81. DOI:10.1016/j.hydromet.2015.08.001
  • [Show abstract] [Hide abstract]
    ABSTRACT: Sodium hydroxide leaching of non-activated and mechanically activated zircon (ZrSiO4) from Indian beach sands has been investigated. Mechanical activation is carried out up to 480 min using a planetary mill. The activated samples were characterised in terms of morphology, particle size distribution and degree of amorphisation. Milling resulted in a significant reduction in median size from 195 to 0.99 μm and degree of amorphisation reached a value of ~ 90% after about 100 min of milling. Leaching was carried out with 2.5-7.5 M NaOH in the temperature range of 35–85 °C and a solid to liquid ratio of 1:20 (w/v). Mechanical activation resulted in a 2–4 fold increase in the solubility of ZrO2 and SiO2 components of zircon after 480 min milling. Dissolution occurs non-congruently and the nature of dissolution was found to depend on the progress of leaching, temperature and mechanical activation time. The rate of dissolution of ZrO2 component exceeds SiO2 component under all the conditions of leaching. The kinetics of dissolution of both the components can be described in terms of a 'shrinking core model with film diffusion', and, depending upon mechanical activation time with the apparent activation energies of 17–41 kJ/mol for ZrO2 component and 8–23 kJ/mol for SiO2 component. The apparent activation energy for ZrO2 component shows an anomalous increase with an increase in mechanical activation time. The anomaly is explained in terms of opposing dual role of mechanical activation, namely enhanced dissolution due to increased reactivity with a simultaneous greater formation of the inhibiting Si-rich surface film/layer due to non-congruent nature of the dissolution. available from http://www.sciencedirect.com/science/article/pii/S0304386X15300591
    Hydrometallurgy 08/2015; 157:159-170. DOI:10.1016/j.hydromet.2015.08.004
  • Hydrometallurgy 08/2015; DOI:10.1016/j.hydromet.2015.08.012
  • Hydrometallurgy 08/2015; DOI:10.1016/j.hydromet.2015.08.017
  • [Show abstract] [Hide abstract]
    ABSTRACT: In recent years, many researchers have studied processes for extracting gold and silver from ores using alternatives that are less harmful and aggressive to the environment than cyanides. Thiosulfate solutions represent one such alternative. Metallic silver can be dissolved in O2–thiosulfate in different experimental conditions. Silver dissolution was obtained without the formation of passivation layers on the surface of the silver plate used. The kinetic study conducted indicated that the process is affected by a stirring speed of between 8.3 and 15 s− 1 (the reaction rate increased threefold), and the reaction orders were 1 (oxygen partial pressure 0.2–1 atm), 0.41 (thiosulfate concentration 25–200 mol m− 3), 0 (thiosulfate concentration 200–600 mol m− 3), 0.35 (hydronium concentration 1 · 10− 8–1 · 10− 7 mol m− 3) and 0 (hydronium concentration 1 · 10− 6–1 · 10− 2 mol m− 3). The apparent activation energy of the process was 4.5 kJ mol− 1. Kinetics is controlled by a mass transfer of oxygen in the solid–liquid interface. In the presence of copper ions and oxygen, the reaction rate increased by 30% with respect to the process without copper. However, the thiosulfate partially decomposed and a layer of silver sulfide formed on the surface of the silver. The process was applied to a metallic silver powder, which showed a similar behavior to the silver plate.
    Hydrometallurgy 07/2015; 156. DOI:10.1016/j.hydromet.2015.05.009
  • [Show abstract] [Hide abstract]
    ABSTRACT: A novel environment-friendly method based on stepwise roasting has been proposed to extract vanadium and chromium separately from vanadium slag with high chromium content (V–Cr slag), which consists of two stages of sodium roasting–water leaching. Fractional sodium roasting–water leaching is firstly conducted to extract vanadium from the V–Cr slag and 87.9% of vanadium is extracted in optimal conditions. Leaching residue of the fractional roasting stage is then roasted secondarily to extract chromium and 96.4% of chromium is extracted from the leaching residue in optimal conditions. Overall extractions of vanadium and chromium are 98.9% and 96.6%, respectively. Evolution mechanisms of V-bearing and Cr-bearing phases were elucidated by XRD, TG–DSC and SEM-EDS. It is elucidated that V(III) existing as V-spinels in the V–Cr slag is oxidized to water-soluble NaVO3 while Cr(III) remains in the form of Cr-spinels or R2O3 phase (R: Cr, Fe) during the fractional roasting; in secondary roasting, Cr(III) existing as Cr-spinels and R2O3 phase in the leaching residue of fractional roasting stage is oxidized to water-soluble Na2CrO4. Vanadium and chromium have thus been extracted separately and thoroughly at the extraction procedure by controlling the roasting extent of V–Cr slag via the proposed stepwise roasting method. The established method provides new insights for comprehensive utilization of complex minerals containing multiple valuable elements.
    Hydrometallurgy 07/2015; 156. DOI:10.1016/j.hydromet.2015.06.003
  • [Show abstract] [Hide abstract]
    ABSTRACT: The concentrated metal scraps, obtained by the mechanical process for waste printed circuit board (WPCB) recycling, were pressed as the anode, which was directly electrolyzed to produce copper powders. The effects of CuSO4·5H2O, NaCl and H2SO4 concentration, current density and electrolysis time on current efficiency and copper powder size were investigated in detail. The results indicated that current efficiency increased rapidly as the increase of CuSO4·5H2O, H2SO4 concentration and current density. The obtained copper powders became finer with the increase of current density and NaCl concentration; and copper powders became coarser with the increase of CuSO4·5H2O concentration. Under the optimum conditions (50 g/L CuSO4·5H2O, 40 g/L NaCl, 118 g/L H2SO4, 80 mA/cm2 for 3 h), current efficiency was the highest (98.12%) and the particle size was the finest (9.35 μm). The experimental studies also revealed that the purity of copper obtained at the highest current efficiency was higher to 98.06%. Produced copper powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD analysis indicated that copper was the main phase; SEM analysis showed that dendritic structure was the main characteristic of the obtained copper powders; TEM results indicated that at the end of the dendritic structure, the copper surface was coated with a layer of dense Cu2O. It is believed that the process is effective for copper recovery from concentrated WPCB metal scraps.
    Hydrometallurgy 07/2015; 156. DOI:10.1016/j.hydromet.2015.06.006
  • [Show abstract] [Hide abstract]
    ABSTRACT: An efficient alkali fusion-leaching-separation process is developed to recover metals in crushed metal enrichment (CME) originated from waste printed circuit boards (PCBs). Impacts of fusion parameters on metals conversions were systematically investigated. In the fusion-leaching process, amphoteric metals such as tin, lead, zinc and aluminum in the CME were leached out, while leaving copper and precious metals in the residue. Subsequently, metals in solution were further extracted via precipitation processes, and metals in the residue were recovered using an acid leaching-electrowinning process. Cathode copper, nano-Cu2O, CaSnO3/CaSn(OH)6 crystal and mixture of PbS-ZnS were obtained as the final products of this process. By optimizing the experimental conditions, recoveries of 98.66% for Cu, 91.08% for Sn, 91.25% for Zn, 78.78% for Pb were achieved, respectively. And all precious metals were enriched in the final residue with grades of Au 613 g/t, and Ag 2157 g/t.
    Hydrometallurgy 07/2015; 156. DOI:10.1016/j.hydromet.2015.06.011
  • [Show abstract] [Hide abstract]
    ABSTRACT: The present study investigated the removal of calcium from sulfate solutions containing magnesium and nickel using aqueous two phase systems (ATPS) at room temperature. In an attempt to evaluate the application range of this separation method, batch scale tests (bottom/top phase weight = 1) were carried out using synthetic test solutions at two concentration levels (low and high). The test solution of high concentration used as the bottom phase consisted of a solution containing [Ca] = 0.44 g·L− 1, [Mg] = 1.42 g·L− 1 and [Ni] = 80.0 g·L− 1, whose concentration level is similar to those typically found in high pressure acid leach liquors. The test solution of low concentration used as the bottom phase consisted of a solution of sodium tartrate in which a given volume of the solution of high concentration was added, resulting in a dilution of approximately 80 fold. The performance of some cationic extractants (Cyanex 272, 1N2N and PAN) at changing concentrations and the effect of the pH of the aqueous system (1, 6 and 11) were investigated in the dilute condition. This study found that, when ATPS operated in at least 3 contact stages, it proved to be a highly efficient and selective method to separate calcium from magnesium and nickel, using no extractant and at low pH values (around 1–2) for both dilute and concentrated solutions. The extraction of nickel depends on the pH and the type/concentration of extractant, while the extraction of magnesium was not affected by the studied operating variables.
    Hydrometallurgy 06/2015; DOI:10.1016/j.hydromet.2015.06.010
  • [Show abstract] [Hide abstract]
    ABSTRACT: A three factor 2-level designed set of experiments was performed to determine the effects of inlet flow rate, temperature, and current density on impurity particle behavior in electrolyte and the associated distribution on the cathode in copper electrorefining. Laser-Induced Breakdown Spectroscopy (LIBS) was used to measure the concentration of impurities on the cathode. The results of the experiments were statistically analyzed using Minitab. The inlet flow rate was identified as the most significant factor. All three factors and their two-factor interactions have a significant effect on impurity concentration on the cathode. The impurity concentrations in corner positions of cathodes had higher impurity levels than those in the center position of cathodes. The current density exerts more effect on both impurity concentrations at corner positions than at the center position. A possible explanation for the phenomena observed is proposed.
    Hydrometallurgy 06/2015; DOI:10.1016/j.hydromet.2015.06.005
  • [Show abstract] [Hide abstract]
    ABSTRACT: The feasibility and optimization of strategies of microbial re-inoculation were investigated to enhance chalcopyrite bioleaching. The application of microbial re-inoculation consisted of the re-addition of cultures of Acidithiobacillus caldus, Ferroplasma thermophilum or Leptospirillum ferriphilum (with different inoculum concentrations) into the two defined different bioleaching systems that separately represented the early and middle stages of chalcopyrite bioleaching. Changes in the bioleaching performance and microbial community structure after re-inoculation were compared to that in the control bioleaching experiment which without re-inoculation. Results of re-addition of pre-grown microbial cultures into the early stage indicated that the re-inoculated strain survived and/or grew in the leaching environments and meanwhile synergistically promoted the growth of other microorganisms, then accelerated the total iron/sulfur oxidation compared to the unamended control. Finally, all these factors resulted in a significant enhancement of copper extraction. Moreover, a higher re-inoculation concentration exerted a more significant improvement in copper leaching from chalcopyrite. In all experiments, re-inoculation with L. ferriphilum into the early stage showed the best enhancement in copper leaching, which significantly shortened the incubation time and improved the maximum copper extraction. Re-inoculation with iron or sulphur oxidisers into the middle stage exerted poor outcomes which could not or slightly improve the final leaching level of copper. These results demonstrate that re-inoculation can be a useful step to improve the bioleaching kinetics and level of chalcopyrite; however its efficacy is influenced by the functional strain selection and procedures of culture re-inoculation (including re-addition time and inoculum concentration).
    Hydrometallurgy 06/2015; 156. DOI:10.1016/j.hydromet.2015.06.009