Minerals engineering : an international journal devoted to innovation and developments in mineral processing and extractive metallurgy, Vol. 23 N° 6. Minerals engineering - Mai 2010
| Titre : | Minerals engineering : an international journal devoted to innovation and developments in mineral processing and extractive metallurgy, Vol. 23 N° 6. Minerals engineering - Mai 2010 |
| Type de document : | Bulletin |
| Paru le : | 11/12/2011 |
Dépouillements
Article : texte imprimé
Wei Luo, Auteur ;
Qiming Feng, Auteur ;
Leming Ou, Auteur
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Mineralogical analyses of the saprolitic laterite material have been characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, thermal analysis, scanning electron microscope (SEM) and ene[...]
Article : texte imprimé
N. Ngwenya, Auteur ;
E. M. N. Chirwa, Auteur
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This study investigates the removal of the fission products Sr2+, Cs+ and Co2+ in single and binary metal solutions by a sulphate reducing bacteria (SRB) biomass. The effect of initial concentration and pH on the sorption kinetics of each metal [...]
Article : texte imprimé
Kyoungkeun Yoo, Auteur ;
Soo-kyung Kim, Auteur ;
Jae-chun Lee, Auteur
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The effect of chloride on chalcopyrite leaching has been investigated by performing batch leaching tests with three kinds of leaching solutions and using Hiroyoshi’s model, which suggests that a zone of rapid leaching exists between the critical[...]
Article : texte imprimé
A.B. Nesbitt, Auteur
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Two case studies are presented in which a continuous loss of capacity in two samples of acid resin, are observed over 900 cycles of loading and regeneration. By completing the batch kinetic testing of the resin at different turbulences and calcu[...]
Article : texte imprimé
Cindy-Jade Africa, Auteur ;
Susan T.L. Harrison, Auteur ;
Megan Becker, Auteur
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In this paper, the development of a novel means of investigating the attachment and subsequent biofilm formation of mineral bioleaching micro-organisms to mineral surfaces in situ is described. The protocol was developed to investigate the inter[...]
Article : texte imprimé
Ligiane R. Gouvea, Auteur ;
Carlos A. Morais, Auteur
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This paper describes a study of the separation of zinc and copper from the leach liquor generated in the treatment of the zinc residue (29.6 g/L Zn and 37.4 g/L Cu) by liquid–liquid extraction. In it, the influence of the extractant type and con[...]
Article : texte imprimé
Janúbia C. B. S. Amaral, Auteur ;
Carlos A. Morais, Auteur
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This paper describes the process of extraction of thorium and uranium from the sulfuric liquor generated in the chemical monazite treatment through a solvent extraction technique. The influence of the extractant type and concentration, contact t[...]
Article : texte imprimé
Jochen Petersen, Auteur
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A detailed experimental study is described which was conducted to determine the rate of oxygen gas–liquid mass transfer within the packed bed of heap bioleach reactors at different temperatures (22–68 °C), using the Na2SO3 method. The raw data w[...]
Article : texte imprimé
D. Herrero, Auteur ;
P.L. Arias, Auteur ;
B. Güemez, Auteur
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This study deals with the development of an innovative hydrometallurgical process for zinc recovery from Waelz Oxide, a concentrate of zinc and lead oxides obtained pyrometallurgically from the treatment of EAF dusts.
Its main objective is the [...]
Article : texte imprimé
Robert P. Van Hille, Auteur ;
Andries W. van Zyl, Auteur ;
Nicholas R.L. Spurr, Auteur
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This paper describes an investigation into the effect of iron concentration in the leach solution on the bioleaching of a low grade copper ore, where chalcopyrite was the dominant copper sulphide. The concentration of dissolved iron is primarily[...]
Article : texte imprimé
Simphiwe Chabalala, Auteur ;
Evans M. N. Chirwa, Auteur
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Biological uranium removal was investigated using bacteria sourced from an uranium mine in Limpopo, South Africa. Background uranium concentration in the soil from the mine was determined to be 168 mg/kg using the ICP-OES calibrated against the [...]
Article : texte imprimé
B. Florian, Auteur ;
N. Noël, Auteur ;
W. Sand, Auteur
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Bioleaching is the dissolution of metal sulfides, such as pyrite and chalcopyrite, by bacterial oxidation processes. It has been found that attachment of leaching bacteria to the mineral surface enhances the metal sulfide dissolution. The intera[...]
Article : texte imprimé
Renata D. Abreu, Auteur ;
Carlos A. Morais, Auteur
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The present work describes the development of an efficient and relatively simple process to obtain high grade CeO2 from sulphuric acid leach liquor. The liquor was obtained through acid digestion of monazite. The steps investigated in the proces[...]
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