Minerals engineering : an international journal devoted to innovation and developments in mineral processing and extractive metallurgy, Vol. 23 N° 2. Minerals engineering - Janvier 2010
| Titre : | Minerals engineering : an international journal devoted to innovation and developments in mineral processing and extractive metallurgy, Vol. 23 N° 2. Minerals engineering - Janvier 2010 |
| Type de document : | Bulletin |
| Paru le : | 09/03/2010 |
Dépouillements
Article : texte imprimé
T. Norgate, Auteur ;
S. Jahanshahi, Auteur
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Metallic ore grades are falling globally as the higher grade reserves are exploited first and are progressively depleted.
At the same time, the demand for primary metals extracted from these ores is expected to increase, despite increased level[...]
Article : texte imprimé
S. A. Macpherson, Auteur ;
S. M. Iveson, Auteur ;
K. P. Galvin, Auteur
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The Reflux Classifier is a device consisting of parallel inclined channels above a fluidized bed.
Water-based versions of the system have been successfully employed in industry for gravity separation of −2 + 0.25 mm coal and mineral matter.
In[...]
Article : texte imprimé
M. Massinaei, Auteur ;
R. Doostmohammadi, Auteur
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Previous studies in mechanical and column flotation cells have shown that bubble surface area flux (Sb) is an appropriate indicator of gas dispersion in a flotation cell which has a relatively strong correlation with flotation rate constant.
In[...]
Article : texte imprimé
L. O. Filippov, Auteur ;
I. V. Filippova, Auteur ;
V. V. Severov, Auteur
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The paper describes effective reagent combinations for removal of silicates by reverse cationic flotation from magnetic concentrate in magnetite ores processing.
This work is based on a hypothesis that a further development in reverse cationic [...]
Article : texte imprimé
Run-qing Liu, Auteur ;
Wei Sun, Auteur ;
Yue-hua Hu, Auteur
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Three thiophenol collectors were tested for the flotation of marmatite without activation by copper sulfate.
Flotation tests showed that marmatite flotation increased according to the following order: 2-fluoro thiophenol < 2-hydroxy thiophenol[...]
Article : texte imprimé
Stéphanie Somot, Auteur ;
James A. Finch, Auteur
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Self-heating of sulphides poses safety, environmental and economic concerns to the mining and metallurgical industries, especially when sulphide ores or concentrates have to be stored or transported.
The first target of this investigation is th[...]
Article : texte imprimé
G. Bournival, Auteur ;
S. Ata, Auteur
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In this paper, geometrical packing models were derived to determine the coverage of particles on an air bubble.
Nearly spherical glass beads of two size fractions and galena particles were used in the study.
The coverage of air bubbles by glas[...]
Article : texte imprimé
Felipe Núñez, Auteur ;
Luis Tapia, Auteur ;
Aldo Cipriano, Auteur
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Column flotation is widely used in the concentration of low grade ores.
Often column flotation concentrate is the final product of a very complex circuit, and therefore control of the metallurgical performance has direct impact in the plant per[...]
Article : texte imprimé
Juan Yianatos, Auteur ;
Felipe Contreras, Auteur ;
Francisco Díaz, Auteur
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In this work, the measurement of the axial gas holdup profile and gas residence time distribution (RTD), in a 130 m3 self-aerated flotation cell, is presented.
For this purpose, a radioactive tracer gas was activated in the Nuclear Reactor of t[...]
Article : texte imprimé
M. H. Moys, Auteur ;
J. Yianatos, Auteur ;
J. Larenas, Auteur
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Methods for estimation or measurement of particle loading on bubbles in the flotation process are reviewed.
The paper focuses on direct measurement methods developed under the direction of Moys at the University of the Witwatersrand and by Seam[...]
Article : texte imprimé
C. J. Suazo, Auteur ;
W. Kracht, Auteur ;
O. M. Alruiz, Auteur
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The flotation rate constant was modelled as a function of air dispersion properties and the complete feed particle size distribution by using the collision–attachment–detachment approach and introducing a parameter (Ф) which represents the inher[...]
Article : texte imprimé
D. Feng, Auteur ;
J. S. J. van Deventer, Auteur
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The addition of low levels of ethylenediaminetetraacetic acid (EDTA) in the ammoniacal thiosulphate gold leach system lowered the catalytic cupric/cuprous redox equilibrium potential, hence the mixed solution potential and reduced the consumptio[...]
Article : texte imprimé
S. Morrell, Auteur
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In a previous paper (Morrell, 2009. Predicting the overall specific energy requirement of crushing, high pressure grinding roll and tumbling mill circuits.
Minerals Engineering 22 (6), 544–549), an approach was described to predict the specific[...]
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