CIM Journal, Vol. 7, No. 3

CIM Journal, Vol. 7, No. 3, 2016
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Sommaire: The toxicity of arsenic is well known and documented; however, the presence of arsenic in copper electrorefining anodes and electrolytes is critically necessary to produce high-quality cathode. Arsenic as well as antimony and bismuth concentrations vary relative to their concentration in the anode copper received from the smelter. The behaviour and benefits of arsenic in copper electrorefining and the detrimental effects of antimony and bismuth on cathode quality and tankhouse performance are...
Publication: CIM Journal
Auteur(s): M. S. Moats, N. Aslin and A. Pranowo, G. R. F. Alvear F.
Mots clés: Antimony, Arsenic, Bismuth, Copper electrorefining, Lead
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: In projects involving resource development and plant optimization, the use of in-mine geophysics can deliver considerable benefit. The value proposition lies in using very high resolution downhole measurements to model process-plant outcomes. The calibration procedure used to convert in-situ physical properties into process engineering parameters is illustrated using two iron ore projects. Data correction was related either to orebody structure or mineral formation. The deliverable from this...
Publication: CIM Journal
Auteur(s): R. Howard
Mots clés: Downhole (DH) data inversion, Geometallurgy, Gravity separation, In-mine geophysics, Iron ore, Magnetic separation, Stockpile strategy
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: J. S. Redpath Limited, an underground contractor with a worldwide presence, has implemented innovative techniques in various projects in Canada to shorten the development cycle. Conventional methods currently used for installing primary ground support are compared with the Australian technique of bolting and meshing with jumbos equipped with twin telescopic booms, in-cycle shotcreting, and the use of two jumbos and two scissor bolters set up side by side in wide headings. Recommendations and...
Publication: CIM Journal
Auteur(s): P. Healy, P. Hickey, and G. Hubert
Mots clés: Australian method of bolting and meshing, Contract development, In-cycle shotcrete, Jumbo bolter, Ramp and lateral development, Rapid development, Rapid drifting, Scissor bolter
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: Advances in technology provide educators with valuable tools to enhance their teaching and efficiently deliver content to larger audiences. University educators are often encouraged to become more “research intensive” and to increase student enrollment. Faced with these pressures, there is a tendency to use technology to improve teaching efficiencies rather than to enhance existing teaching approaches. Practical learning in applied engineering courses would suffer greatly if hands-on...
Publication: CIM Journal
Auteur(s): D. Beneteau and D. Milne; Y. Potvin
Mots clés: Education, Rock mechanics, Teaching, TechnologyEducation, Rock mechanics, Teaching, Technology
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: Hydraulic fracture (HF) growth through naturally fractured rocks challenges the development of accurate predictive HF models. The authors present laboratory experiments differentiating behaviours associated with orthogonal and oblique intersections between HFs and natural fractures (NFs). HFs were created in sandstone and crystalline (gabbro) rock specimens, impinging orthogonally or obliquely on an unbonded machined frictional interface. Ultrasound monitoring was used to observe the rate of...
Publication: CIM Journal
Auteur(s): A. P. Bunger, J. Kear, R. G. Jeffrey, R. Prioul, D. Chuprakov
Mots clés: Fractured reservoirs, Hydraulic fracturing, Laboratory experimentation, Ultrasound monitoring
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: Vanadium has been produced from a variety of sources. This metal is known to make aqueous solutions of complex speciation as a function of vanadium concentration and pH. Considering the method of leaching, the impurities in the pregnant leach solution, and the planned vanadium product, different extractants and flowsheets can be applied for solution purification. This paper reviews the purification of vanadium leaching solution using organophosphorus, solvating, and amine extractants. This...
Publication: CIM Journal
Auteur(s): M. R. Tavakoli, D. B. Dreisinger
Mots clés: Organic extractants, Solvent extraction, Vanadium purification, Vanadium resources
Numéro: 3
Volume: 7
Année: 2016
Texte
Sommaire: A heptapeptide library displayed on M13 bacteriophages (phages) was screened to identify peptide sequences able to selectively bind to gold, chalcopyrite, sphalerite, pyrite, and silica ores, and to evaluate phage potential as bioflotation reagents. Many peptide sequences were isolated through biopanning and differed from known sequences. Adsorption isotherms were determined and a receptor/ligand interaction model was identified and used to compare affinity of peptide sequences toward ores....
Publication: CIM Journal
Auteur(s): K. Tremblay-Bouliane, D. Tremblay, S. Moineau, B. Gaillet, and A. Garnier; C. Olsen
Mots clés: Adsorption isotherm, Biosourced, Collector, Depressant, Froth flotation, Hydrophobicity, Induction time, Peptides, Phage display, Screening
Numéro: 3
Volume: 7
Année: 2016
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