Energy as a production input in the industrial minerals industry— past and future requirements

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Mots clés : Industrial minerals;Energy;Production;Productivity;Fuel
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Publication: CIM Bulletin
Auteur(s): P.E. WEIDMARK
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: This paper describes the revisions to the heating and ventilating system at the Frood-Stobie mill, which resulted in substantial savings in energy costs.
Publication: CIM Bulletin
Auteur(s): M. TAYLOR, C.R. KERR
Mots clés: Energy management, Conservation, Inco Metals Company, Frood-Stobie mill, Heating systems, Ventilation systems, Natural gas.
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: A review of instrumentation for the monitoring of radiation variables in the underground environment is presented. Several continuous monitoring systems, grab-sampling systems, personal dosimeters and time-integrating environmental monitors are discussed. The discussion is mostly restricted to instrumentation developed, used, tested or under contract by CANMET. The merits, disadvantages and main uses of the above instrumentation are indicated.The technical evaluations conducted by CANMET and...
Publication: CIM Bulletin
Auteur(s): J. BIGU
Mots clés: Radiation, Monitoring, Underground mining, Environmental control, Dosimeters, Radon gas, Air quality.
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: Boliden Metal Corporation has developed a technique to treat complex copper concentrates containing large amounts of lead, zinc, arsenic, antimony and bismuth which cannot be treated in conventional smelters due to the impurities.Tests were carried out to treat such complex copper concentrates in the TBRC. They were performed in a pilot-plant TBRC with charges of 5 tons. These tests resulted in a new method to treat complex copper raw materials and produce a blister copper low in impurities....
Publication: CIM Bulletin
Auteur(s): STIG PETERSSON, SUNE ERIKSSON, CHRISTER FRIDFELDT
Mots clés: Process metallurgy, Copper concentrates, TBRC, Boliden, Smelting, Ronnskar Works, Converters, Rotary converters, Furnaces.
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: The Fox Mine has been producing copper/zinc ore since 1970 at a rate of approximately one million tons per year, and until 1978 all production was derived from longhole open stapes. In June 1978, a trial slope using bighole mining methods was started to eliminate the development of two sublevels between 400 level and surface. The trial proved to be successful, and bighole mining is now an accepted mining method for both slopes and pillars at Fox Mine.When production blasting was started in...
Publication: CIM Bulletin
Auteur(s): E.N. DuRUSSEL
Mots clés: Underground mining, Sulphur dioxide, Blasting, Fox Mine, Bighole mining, Sloping, Development.
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: Today's market for columbium has only developed in the last two decades, and in this sense it is "newer" than molybdenum, vanadium and most other steel alloying elements. In this short period, it has assumed a very important role in steel alloying and in superalloys. From a few hundred thousand pounds of columbium in 1960, consumption has grown to nearly 30 million pounds per year, with a market value approaching two hundred million dollars.To assess the outlook for columbium, we...
Publication: CIM Bulletin
Auteur(s): EDGAR A. MANKER
Mots clés: Columbium, Mineral economics, Alloys, Ferroalloys, Markets, Pipeline steels, Automobiles, Construction.
Numéro: 832
Volume: 74
Année: 1981
Texte
Sommaire: A recent pilot-plant program carried out at Rio Algom's Quirke uranium mine at Elliot Lake, Ontario is described. The goal of the research was the production of tailings basin effluents which were low in total radium-226. The process tested involved precipitation of radium with barium chloride and sedimentation in plastic-lined settling ponds. Adjustment of the tailings basin overflow from its normal value of pH9.5 by addition of sulphuric acid to about pH 7.5 was found to give approximately...
Publication: CIM Bulletin
Auteur(s): D. MOFFETT, E. BARNES, J.N. HILTON
Mots clés: Radium, Precipitation, Sedimentation, Settling ponds, Uranium milling, Tailings, Environmental control, Barium chloride.
Numéro: 832
Volume: 74
Année: 1981
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