Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 (2012)
Volume 2 (2011)
Volume 1 (2010)
The mechanism of zinc complexation by alkaline ligands: A Molecular Modelling Study

Sima Mohammadnejad; Davood Alavi; Seyed Mohammad Javad Koleini

Articles in Press, Accepted Manuscript, Available Online from 05 May 2022


  In this work, the mechanism of zinc hydroxide and ammine complexation in caustic and ammonia leaching is investigated by molecular modelling using the density functional theory method. The speciation of zinc complexes is defined based on the thermodynamic data and Pourbiax diagrams. The mechanism of ...  Read More

Kinetics of Sphalerite Leaching by Sodium Nitrate in Sulfuric Acid

M. Hasani; Seyed M. J. Koleini; A. Khodadadi

Volume 7, Issue 1 , January 2016, , Pages 1-12


  In the present work, the extraction of zinc from a sphalerite concentrate using sodium nitrate as an oxidant in a sulfuric acid solution was investigated. The effective parameters such as the temperature, sulfuric acid and sodium nitrite concentrations, stirring speed, particle size, and solid/liquid ...  Read More

An applied comparison between conventional pre-dispersed solvent extraction (PDSE) contactors and new dissolved nitrogen PDSE (DNPDSE) ones

M. R. Tavakoli Mohammadi; Seyed M. J. Koleini; M. Abdollahy

Volume 6, Issue 2 , July 2015, , Pages 159-168


  Efforts to increase the mass transfer coefficient, enhance the contact area, and decrease the power input of contractors have given risen to the development of the pre-dispersed solvent extraction (PDSE) contactor and the devise of the new dissolved nitrogen PDSE (DNPDSE) contactors. The studies conducted ...  Read More

Collectorless flotation of Chalcocite by controlling redox potential

sima razmjouee; mahmood abdollahy; seyed mohammad javad koleini

Volume 3, Issue 2 , July 2012, , Pages 99-102


  Using microflotation method, this study explored the collectorless flotation of Chalcocite and its dependence on the redox potential of pulp . Electrochemical studies were performed by cyclic voltammetry  in specific potential ranges and at different pH values. The results show that significant ...  Read More