A relationship between the bubble–particle attachment time and the mineralogy of a copper–sulphide ore

2011 ◽  
Vol 24 (12) ◽  
pp. 1335-1339 ◽  
Author(s):  
Boris Albijanic ◽  
Eiman Amini ◽  
Elaine Wightman ◽  
Orhan Ozdemir ◽  
Anh V. Nguyen ◽  
...  
Keyword(s):  
Copper Sulphide ◽  
Sulphide Ore ◽  
Particle Attachment

Two-dimensional dynamic model of a copper sulphide ore bed

2003 ◽  
Vol 71 (1-2) ◽  
pp. 67-74 ◽  
Author(s):  
M Sidborn ◽  
J Casas ◽  
J Martı́nez ◽  
L Moreno
Keyword(s):  
Dynamic Model ◽  
Copper Sulphide ◽  
Two Dimensional ◽  
Sulphide Ore

Monitoring of Microbial Community Inhabiting a Low-Grade Copper Sulphide Ore by Quantitative Real-Time PCR Analysis of 16S rRNA Genes

2007 ◽  
Vol 20-21 ◽  
pp. 539-542 ◽  
Author(s):  
Francisco Remonsellez ◽  
F. Galleguillos ◽  
Sonestie Janse van Rensburg ◽  
G.F. Rautenbach ◽  
Pedro A. Galleguillos ◽  
...  
Keyword(s):  
16S Rrna ◽  
Real Time ◽  
Real Time Pcr ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Low Grade ◽  
Copper Sulphide ◽  
Quantitative Real Time Pcr ◽  
Sulphide Ore ◽  
Heap Bioleaching

Microbial heap bioleaching is being used as an industrial process to recover copper from low grade ores. It is known that a consortium of different microorganisms participates in this process. Therefore identification and quantification of communities inhabiting heap bioleaching operations is a key step for understanding the dynamics and role of these microorganisms in the process. A quantitative real-time PCR approach was used to investigate the microbial dynamics in this process. To study the microbial population inhabiting a low-grade copper sulphide ore bioleaching industrial heap process at Escondida Mine in Chile, 16S rRNA genetic libraries were constructed using bacterial and archaeal universal primers. Phylogenetic analyses of sequences retrieved from genetic libraries showed that the community is mainly composed by microoganisms related to Acidithiobacillus ferrooxidans (2 strains), Acidithiobacillus thiooxidans, Leptospirillum ferrooxidans, Leptospirillum ferriphilum and the archaea Ferroplasma. Specific primers for real-time PCR determination were designed and tested to amplify each of the sequences obtained by cloning. Standard curves for real time PCR were performed using plasmid DNA from selected clones. This methodology is actually being used to monitor relevant microorganisms inhabiting this low-grade copper sulphide ore bioleaching industrial heap.

Dynamic simulator of a rougher flotation circuit for a copper sulphide ore

2002 ◽  
Vol 15 (4) ◽  
pp. 253-262 ◽  
Author(s):  
A. Casali ◽  
G. Gonzalez ◽  
H. Agusto ◽  
G. Vallebuona
Keyword(s):  
Copper Sulphide ◽  
Sulphide Ore ◽  
Dynamic Simulator

scholarly journals Kinetics of barite reduction from refractory barite-sulphide ore

10.30544/237 ◽  
2016 ◽  
Vol 22 (4) ◽  
pp. 261-268 ◽  
Author(s):  
Miroslav D Sokić ◽  
Vladislav Matković ◽  
Jovica Stojanović ◽  
Branislav Marković ◽  
Vaso Manojlović
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Kinetic Model ◽  
Copper Sulphide ◽  
Influence Of Temperature ◽  
Sulphide Ore ◽  
Lead Zinc ◽  
Complex Structural ◽  
Kinetics Of ◽  
Maximum Removal

Refractory sulphide–barite ore was reduced with carbon in order to release lead, zinc, and copper sulphide from barite-pyrite base. Mineralogical investigations showed that due to the complex structural-textural relationships of lead, copper and zinc minerals with gangue minerals, it is not possible to enrich the ore using the conventional methods of mineral processing. The influence of temperature and time was studied to optimize the conditions, and to determine the kinetics of the barite reduction. The maximum removal of barite from ore was 96.7% at 900oC after 180 min. Chemically controlled kinetic model showed the best compliance with the experimental data. An activation energy of 142 kJ/mol was found.

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