New heat transfer fluid improves performance in anode paste plant

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Mots clés : Heat transfer systems;Aluminum smelters;Thermal stability
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Publication: CIM Bulletin
Auteur(s): J.H Archibald
Numéro: 966
Volume: 86
Année: 1993
Texte
Sommaire: The proposed classification of ore reserves based on geostatistical and economic parameters is designed to be used as a communication tool to identify for investors, bankers, and financial analysts the degree of risk associated with a specific class of ore reserves. The class designation identifies the degree of accuracy of the estimates for tonnage and grade of annual production volumes of ore. It thus enables decision makers to quantify the risks and uncertainties inherent to the ore...
Publication: CIM Bulletin
Auteur(s): H.H. Wober, P.J. Morgan
Mots clés: Ore reserves, Economic expectation, Geostatistical methods, Feasibility studies, Definition of ore, Risk, Production volumes.
Numéro: 966
Volume: 86
Année: 1993
Texte
Sommaire: Traditional prospecting and boulder tracing are the two most important field techniques used in exploration for magnesite deposits hosted by sedimentary rocks. Consequently, success depends largely on the prospector's ability to identify magnesite. A density agent called sodium polytungstate (3Na3WO4-9WOfHf)) was successfully used to determine the presence of magnesite in sedimentary carbonate rocks of southeastern British Columbia. A rapid field method was developed and tested. This method...
Publication: CIM Bulletin
Auteur(s): George J. Simandl, Kirk D. Hancock, Suzanne Paradis, Jana Simandl
Mots clés: Exploration, Industrial minerals, Magnesite-bearing rocks, Sodium polytungstate, Prospecting techniques.
Numéro: 966
Volume: 86
Année: 1993
Texte
Sommaire: The availability of environmental data is a major concern in the development of an exploration project through the permitting and feasibility stages. The collection of these data should ideally start very early in a major exploration program. Although a large proportion of the environmental data can also be used for exploration purposes, (e.g. stream-sediment, soil, and rock analyses), environmental sampling will rarely have been initiated at an early date. For the Windy Craggy project, a...
Publication: CIM Bulletin
Auteur(s): Philip G. Claridge, Bruce W. Downing
Mots clés: Environmental geology, Geochemistry, Windy Craggy, Sulphide deposits, Exploration.
Numéro: 966
Volume: 86
Année: 1993
Texte
Sommaire: Certain environmental problems can substantially alter the physical properties of the subsurface. In such cases, geophysical methods can be used to map the distribution of subsurface contamination or buried wastes prior to drilling or sampling. For example, inorganic contamination by acids, bases, salts, or metallic ions can be detected by instruments that measure ground conductivity; metallic objects such as buried drums, pipelines, etc. can be located by magnetic survey, and radioactive...
Publication: CIM Bulletin
Auteur(s): A. King, M. Pesowski
Mots clés: Environment, Exploration, Geophysical methods.
Numéro: 966
Volume: 86
Année: 1993
Texte
Sommaire: Reservation of ground-water quality is a major environmental concern. The disposal of hazardous material from urban waste dumps, milling wastes in tailings ponds, and industrial wastes in injection wells may contaminate potential sources of potable ground-water. The containment or migration of contaminants in the subsurface depends on bedrock characteristics and type of overlying sediments. Fractured bedrock and permeable sediments that may provide pathways for the transport of potentially...
Publication: CIM Bulletin
Auteur(s): C.J. Mwenifumbo
Mots clés: Environmental geology, Geophysics, Borehole geophysics.
Numéro: 966
Volume: 86
Année: 1993
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