Mineralogical and process controls on the oxidative acid-leaching of radioactive phases in Elliot Lake, Ontario, uranium ores: II – Brannerite and allied titaniferous assemblages

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Mots clés : Brannerite;Coffinite;Elliot Lake;Leaching;Metallurgy;Mineralogical controls;Oxidative leaching;Process controls;Titaniarich phases
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Publication: CIM Bulletin
Auteur(s): Samantha J. Espley, J. Denis P. O’Donnell, Denis Thibodeau, Pamela Paradis-Sokoloski
Mots clés: Corrosion resistance, Mineguard spray-on liners, MIROC, Shotcrete, Support products.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: Cablebolts are an important support component in modern underground mines. If an optimized cablebolt system is to be achieved, it is insufficient to focus on cablebolt layout design or on cablebolt installation in isolation. Cablebolt support, like all engineered systems, requires a holistic approach, encompassing integrated elements of design, implementation and verification. The “Cablebolting Cycle” described in this paper incorporates these components along with related tools and procedure...
Publication: CIM Bulletin
Auteur(s): D. Jean Hutchinson, Mark Diederichs
Mots clés: Cablebolting, Rock mechanics, Underground mining.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: Development of underground openings in a deep mining environment requires a support system that is able to absorb energy as a result of dynamic loading due to rockbursting and blasting and static loading due to convergence as the development face advances. The support system must be resistant to corrosion and be effective over the life of the excavation, upward of ten years, yet simple and cost effective to install. Over the past two years, research has been conducted at INCO’s Creighton Mine...
Publication: CIM Bulletin
Auteur(s): Chris C. Langille, Dwayne D. Tannant, John Galbraith
Mots clés: Deep mining, One-pass support systems, Rock mechanics, Support systems, Underground mining.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: Ammonia present in a variety of mine/mill waste waters was almost completely oxidized to nitrogen by chloride mediated electro-oxidation. A closed circuit operation of preconcentration of ammonia on a suitable adsorbent (e.g. zeolite or a resin) followed by brine stripping of ammonia and electrolysis of the strip liquor seems to have sound technical, economic and environmental merits. The removal of ammonia, cyanide, cyanate or thiocyanate from a mine/mill waste water (e.g. gold mill), either...
Publication: CIM Bulletin
Auteur(s): Kazi E. Haque, D.J. MacKinnon
Mots clés: Ammonia, Chloride electrooxidation, Cyanide, Cyanate, Electro-oxidation, Mediated oxidation, Mineral processing, Thiocyanate, Waste water.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: Kidd Creek Mines places approximately 10 000 tonnes of consolidated rockfill (CRF) daily. Consolidated rockfill comprises sized aggregate mixed with different ratios and amounts of binders. Consolidated rockfill is em ployed to simplify subsequent pillar recovery and provide improved passive/active ground support. The consolidated rockfill is designed to sustain not only the gravitational loading of the overlaying fill material, but also to some extent the dynamic loading applied during...
Publication: CIM Bulletin
Auteur(s): Parviz N. Farsangi, Allen G. Hayward, Ferri P. Hassani
Mots clés: Rock mechanics, Kidd Creek Mines.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: To be competitive on the international market, the Canadian mining industry must reduce its costs, increase its productivity and maintain a high standard of safety. There is a great need today for improved methods that would allow the detection of geological structures in advance of mining to reduce dilution and the monitoring of underground structures to increase safety. This will facilitate planning for optimum exploitation of the mine and to increase production at lower costs. This paper...
Publication: CIM Bulletin
Auteur(s): M. Momayez, F.P. Hassani, A. Hara, A. Sadri
Mots clés: Ground Probing Radar (GPR), Mine planning, Rock mechanics.
Numéro: 1001
Volume: 89
Année: 1996
Texte
Sommaire: Cable bolt supports are being recognized as an effective ground control system in underground
coal mines in North America, and their use has increased considerably during the past few years. The U.S. Bureau of Mines personnel are conducting both laboratory and field tests to evaluate the performance of these supports under a variety of conditions and to establish realistic design guidelines. This paper describes efforts to evaluate the capability of cable bolts to resist the high shear forces...
Publication: CIM Bulletin
Auteur(s): John M. Goris, Lewis A. Martin
Mots clés: Cable bolt supports, Ground control systems, Longwall operations, Rock mechanics.
Numéro: 1001
Volume: 89
Année: 1996
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