Caro's acid—an oxidant for acid leaching of uranium ores

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Mots clés : Uranium extraction;Leaching;Oxidants;Pyrolusite;Hydrogen peroxide;Alligator Rivers ores
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Texte
Publication: CIM Bulletin
Auteur(s): D.V. KREFTING, D.R. BENNETT
Mots clés: Mining, Far North, Transport systems, Off-highway trucks, Highway trucks, Railways, Overland conveyors, Loading, Crushing
Numéro: 862
Volume: 77
Année: 1984
Texte
Sommaire: Operating heavy equipment in Labrador, where the winters are 8 months long and the temperature frequently drops below -40°F (-40°C) for days and sometimes weeks presents unique problems in both the operation and maintenance functions.
Winterization programs must be well designed and implemented at the proper time. These programs must include the proper selection of fuel oil, engine oil, hydraulic oils, greases, cooling system fluids, etc. More often than not, modifications have to be...
Publication: CIM Bulletin
Auteur(s): P. ALPORT, R.E.G. CAINES
Mots clés: Mining, Far north, Equipment, Open-pit mining, Drilling, Blasting, Dewatering, Shovels, Hauling, Transporting, Iron Ore Company of Canada
Numéro: 862
Volume: 77
Année: 1984
Texte
Sommaire: The Polaris mining operation (Fig. 1) is located on Little Corn-wa/lis Island in the Canadian Arctic, an area with a very limited shipping season and a hostile climate. The operation consists of the underground works, barge-mounted concentrator facilities, concentrate storage and shipping facilities, a personnel accommodation complex and an airstrip.
The electrical energy for the operation is provided by four 2.3 MW diesel-generators installed on the barge. The power is distributed through a...
Publication: CIM Bulletin
Auteur(s): A. NIELSEN
Mots clés: Mining, High Arctic, Polaris mining project, Energy systems, Diesel generators, Air systems, Engine cooling systems, Exhausts, Heat utilization
Numéro: 862
Volume: 77
Année: 1984
Texte
Sommaire: The results obtained from the study of soil geochemistry in 14 test areas as well as along six regional traverses clearly indicate that there are important variations in the trace-element content of the A1 soil horizon developed on glacio-lacusthne sediments. The observed dispersions are in all probability attributable to the same sources which are responsible for the anomalies in the groundwaters and the basal till.
Of the fourteen test areas chosen, thirteen are clearly anomalous in the...
Publication: CIM Bulletin
Auteur(s): J.-P. LALONDE, M. BEAUMIER
Mots clés: Exploration, Exploration geochemistry, Pedogeochemistry. Soil, Humus, Glacio-lacustrine sediments, Till, Groundwaters.
Numéro: 862
Volume: 77
Année: 1984
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