DHE Minerals
Hydrometallurgy Research Services
Selected Publications (click the paper title to read more)

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Base Metals & Gold
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Esmaeil Jorjani, Halimeh Askari Sabzkoohi, 2022, Gold leaching from ores using biogenic lixiviants – A review, Current Research in Biotechnology (Elsevier), 4, 10-20.
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Esmaeil Jorjani, 2021, Likely scenarios in the microbial leaching of gold from refractory and non-refractory ores, Minerals Engineering (Elsevier), 170 (2021) 107048.
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Esmaeil Jorjani, 2021, Likely scenarios in the microbial leaching of gold from refractory and non-refractory ores, BIOMINING '21 online Symposium, 7-9 June 2021.
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E. Jorjani, A. Ghahreman, 2017, Challenges with elemental sulfur removal during the leaching of copper and zinc sulfides, and in the residues; a review, Hydrometallurgy (Elsevier Publication), Volume 171, August 2017, Pages 333–343.
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E. Abkhoshk, E. Jorjani, M. Al-Harahsheh, F. Rashchi, M. Naazeri, 2014, Review of the Hydrometallurgical Processing of Non-Sulfide Zinc Ores, Hydrometallurgy (Elsevier), 149 (2014) 153–167.
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B. Nazari, E. Jorjani, H. Hani, Z. Manafi, A. Riahi, 2014, Formation of jarosite and its effect on important ions for Acidithiobacillus ferrooxidans bacteria, Transactions of Nonferrous Metals Society of China (Elsevier), 24(2014) 1152−1160.
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​E. Jorjani, H.R. Barkhordari, M. Tayebi Khorami, A. Fazeli, 2011, Effects of aluminosilicate minerals on copper–molybdenum flotation from Sarcheshmeh porphyry ores, Minerals Engineering (Elsevier), 24, 754–759.
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Y. Vazifeh, E. Jorjani, A. Bagherian, 2010, Optimization of reagent dosages for copper flotation using statistical technique, Transactions of Nonferrous Metals Society of China (Elsevier), Volume 20, Issue 12, P. 2371-2378.
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M. Zarbayani, E. Jorjani, M. Mirmohammadi, M. T. Shadloo, M. Noaparast, 2010, Mineralogical and sink-float studies of Jajarm low-grade bauxite, International Journal of Minerals, Metallurgy and Materials (Springer), Volume 17, Number 3, 251.
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H. R. Barkhordari, E. Jorjani, A. Eslami, M. Noaparast, 2009, Occurrence mechanism of silicate and aluminosilicate minerals in Sarcheshmeh copper flotation concentrate, International Journal of Minerals, Metallurgy and Materials (Elsevier), Volume 16, Number 5, 494.
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S. Chehreh Chelgani, E. Jorjani, 2009, Artificial neural network prediction of Al2O3 leaching recovery in the Bayer process - Jajarm alumina plant (Iran), Hydrometallurgy (Elsevier), 2009, Volume 97, Issues 1-2, 105-110.
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B. Nazari, H. Hani, E. Jorjani, A. Ghahremaninezhad, Z. Manafi, F. Hasani, A. Riahi, 2016, The effect of iron removal from raffinate on the copper bioleaching process, 4th International Symposium on Iron Control in Hydrometallurgy, IMPC 2016, September 11-15, Québec City. Accepted for oral presentation.
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E. Ahmadi, P. Shariati, M. Aranejad, A. Azimi, E. Jorjani, 2009, Isolation and characterization of a new Acidithiobacillus caldus strain from a polymetalic copper mine and evaluation of its sulphur oxidation and bioleaching potential, FEMS 2009, Third Congress of European Microbiologists, Gothenburg, Sweden, June 28 - July 2, 2009.
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E. Jorjani, M. Amirhosseini, M. Dehmeshke, 2005, Comparison Between Alumina Production Process from Nepheline Ore in Razgah (Iran) and Khibin & Kia-Shaltyre Deposit (Russia), 20th World Mining Congress & Expo 2005, Tehran, Iran.
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B. Gibson, D.G. Wonyen, S. Chehreh Chelgani, 2017, A review of pretreatment of diasporic bauxite ores by flotation separation, Minerals Engineering, Volume 114, December 2017, Pages 64-73
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Rare Earth Elements & Niobium
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Amirshahi, S.; Jorjani, E. Preliminary Flowsheet Development for Mixed Rare Earth Elements Production from Apatite Leaching Aqueous Solution Using Biosorption and Precipitation. Minerals 2023, 13, 909. https://doi.org/10.3390/ min13070909
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Esmaeil Jorjani, Malek Shahbazi, 2016, The production of rare earth elements group via tributyl phosphate extraction and precipitation stripping using oxalic acid, Arabian Journal of Chemistry (Elsevier), Volume 9, November 2016, 1532–S1539.
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E. Jorjani, A. H. Bagherieh, S. Chehreh Chelgani, 2011, Rare earth elements leaching from Chadormalu apatite concentrate: laboratory studies and regression predictions, Korean Journal of Chemical Engineering (Springer), 28(2), P. 557-562.
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E. Jorjani, A.H. Bagherieh, B. Rezai, 2007, Determination of rare earth elements in products of Chadormalu iron ore concentrator plant (Iran) from beneficiation point of view, Iranian Journal of Chemistry and Chemical Engineering- International English edition, Jahad Daneshgahi , Vol. 26, No.4, 11-17.
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S. Chehreh Chelgani, B. Hart, 2017, Explaining surface interactions for common associated gangues of rare earth minerals in response to the oxalic acid, International Journal of Mining Science and Technology (Elsevier), accepted.
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S. Chehreh Chelgani, B. Hart, 2014, TOF-SIMS studies of surface chemistry of minerals subjected to flotation separation - A review, Minerals Engineering (Elsevier), 57, 1–11.
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S. Chehreh Chelgani, B. Hart, L. Xia, 2013, A TOF-SIMS surface chemical analytical study of rare earth element minerals from micro flotation tests products, Minerals Engineering, 45: 32–40.
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S. Chehreh Chelgani, B. Hart, B. Beisigner, J. Marois, M. Ourriban, 2014, Pyrochlore surface oxidation in relation to matrix Fe composition: a study by X-ray photoelectron spectroscopy, Minerals Engineering (Elsevier), 55, 165–171.
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S. Chehreh Chelgani, B. Hart, J. Marois, M. Ourriban, 2012, Study of pyrochlore surface chemistry effects on collector adsorption by TOF-SIMS, Minerals Engineering, 39: 71–76.
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S. Chehreh Chelgani, B. Hart, J. Marois, M. Ourriban, 2012, Study of pyrochlore matrix composition effects on froth flotation by SEM-EDX, Minerals Engineering, 30: 62–66.
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S. Chehreh Chelgani, James C. Hower, 2018, Estimating Rare earth elements and Yttrium content of eastern Kentucky coal samples based on their associated ash elements, Journal of Rare Earths.
Coal & Graphite
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S. Chehreh Chelgani, James C. Hower, 2018, Relationships between noble metals as potential coal combustion products and conventional coal properties, Fuel 226 (2018) 345–349.
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E. Jorjani, H. Ghasemi Chapi, M. Tayebi Khorami, 2011, Ultra clean coal production by microwave irradiation pretreatment and sequential leaching with HF followed by HNO3, Fuel Processing Technology (Elsevier), 92, 1898–1904.
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S. Chehreh Chelgani, M. Rudolph, R. Kratzscha, D. Sandmann, and J. Gutzmera, 2016, A Review of Graphite Beneficiation Techniques, Mineral Processing and Extractive Metallurgy Review (Taylor & Francis), VOL. 37, NO. 1, 58–68.
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Golshani T., Jorjani E., Chelgani S. Chehreh, Shafaei S. Z., Nafechi Y. Heidari, 2013, Modeling and process optimization for microbial desulphurization of coal by using a two-level full factorial design, International Journal of Mining Science and Technology (Elsevier), 23, 261–265.
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Sh. Mesroghli , J. Yperman, G. Reggers , E. Jorjani , R. Carleer , 2016, Impacts of sonication and post-desulfurization on organic sulfur species by reductive pyrolysis, Fuel (Elsevier) 183, 278–291.
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Sh. Karimi, E. Jorjani, S. Chehreh Chelgani, Sh. Mesroghli, 2014, Multi-variable regression and adaptive neuro-fuzzy inference system predictions of ash fusion temperatures using ash chemical composition of U.S. coals, Journal of Fuels, Available online at http://www.hindawi.com/journals/jfu/aip/.
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E. Jorjani, B. Rezai, M. Vossoughi, M. Osanloo, 2004, Desulfurization of Tabas coal with Microwave irradiation/Peroxyacetic acid washing at 25, 55 and 85 oC, Fuel, (Elsevier) 83, 943-949.
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E. Jorjani, S. Esmaeili, M. Tayebi Khorami, 2013, The effect of particle size on coal maceral group’s separation using flotation, Fuel (Elsevier) 114, 10–15.
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E. Jorjani, B. Rezai, M. Vossoughi, M. Osanloo, 2004, Biodesulfurization of Tabas coal by microorganisms, Journal of Mining Science (Springer), Russian and English versions, Vol. 40, No. 3.
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Hamid Reza Habetinejad, Esmaeil Jorjani, Abbas Sam , 2012, Evaluation of M-Curve validity on feed blending at the Zarand coal washery plant, International Journal of Mining Science and Technology (Elsevier), 22, 19–22.
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M. Tayebi Khorami, S. Chehreh Chelgani, James C. Hower, E. Jorjani, 2011, Studies of relationships between Free Swelling Index (FSI) and coal quality by regression and Adaptive Neuro Fuzzy Inference System, International Journal of Coal Geology (Elsevier), Volume 85, Issue 1, P. 65-71.
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E. Jorjani, B. Rezai, M. Vossoughi, M. Osanloo, M. Abdollahi, 2004, Oxidation pretreatment for enhancing desulfurization of coal with sodium butoxide, Minerals Engineering, (Elsevier), 17, 545-552.
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SH. Mesroghli, E. Jorjani, S. Chehreh Chelgani, 2009, Estimation of gross calorific value based on coal analysis using regression and artificial neural networks, International Journal of Coal Geology (Elsevier), Volume 79, Issues 1-2, 49-54.
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E. Jorjani, James C. Hower, S. Chehreh Chelgani, Mohsen A. Shirazi, Sh. Mesroghli. 2008, Studies of relationship between petrography and elemental analysis with grindability for Kentucky coals, Fuel (Elsevier), 87, 707-713.
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E. Jorjani, J. Yperman, R. Carleer, B. Rezai, 2006, Reductive pyrolysis study of sulfur compounds in different Tabas coal samples, Fuel (Elsevier) 85,114-120.
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S. Chehreh Chelgani, S.S. Matin, S. Makaremi, 2016, Modeling of free swelling index based on variable importance measurements of parent coal properties by random forest method, Measurement, 94, 416-422.
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S. Chehreh Chelgani, S.S. Matin, J.C. Hower, 2016, Explaining relationships between coke quality index and coal properties by Random Forest method, Fuel, 182, 754–760.