An integrated hydraulic mining, selective

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Mots clés : Coal utilization;Hydraulic mining;Selective agglomeration;Metallurgical coal;Transportation;Beneficiation
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Texte
Publication: CIM Bulletin
Auteur(s): F. HAMPSHIRE
Mots clés: Equipment, Maintenance, Diesel generators, Power plants, Equipment selection, Fuel, Energy.
Numéro: 891
Volume: 79
Année: 1986
Texte
Publication: CIM Bulletin
Auteur(s): DON McCOLMAN
Mots clés: Equipment, Maintenance, Tires, Haulage truck, Repairs.
Numéro: 891
Volume: 79
Année: 1986
Texte
Publication: CIM Bulletin
Auteur(s): TODD S. HARRIS
Mots clés: Industrial minerals, Extender minerals, Filler minerals, Calcium carbonate, Kaolin, Talc, Barytes, Silica, Mica, Markets, Supply.
Numéro: 891
Volume: 79
Année: 1986
Texte
Publication: CIM Bulletin
Auteur(s): JOHN H. SCHLOEN
Mots clés: Copper hydrometallurgy, Electrolytic copper refining, Production, Consumption, Anode copper, Cathode copper, Continuous smelting processes, Impurity control.
Numéro: 891
Volume: 79
Année: 1986
Texte
Publication: CIM Bulletin
Auteur(s): R.F. ENGLER
Mots clés: Coal geology, Exploration, Development, Stratigraphy, Coal measures, Structural geology, Coalspur beds.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: In all likelihood, Canada's mining industry would be adversely affected by corporate tax reform proposals actively being considered by the Department of Finance in Ottawa. When the next set of proposals for tax reform is released later this year as promised by Finance, the mining industry had better be prepared to take a hard look.
Publication: CIM Bulletin
Auteur(s): ROBERT B. PARSONS
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Canada's mining industry has reason to celebrate the federal government's budget which was tabled on February 26, 1986. The budget contains an important proposal to improve the flow-through share rules by effectively eliminating the investor's liability to third parties. This proposed rule change and other important budget proposals are the subject of this month's edition of Tax Notes.
Publication: CIM Bulletin
Auteur(s): ROBERT B. PARSONS
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Nanisivik Mines Ltd. operates a 10-MW diesel-electric generating plant at its zinc-lead operation on Baffin Island in the Canadian Arctic. This paper provides a description of the plant and the integrated waste heat recovery system. Data is presented detailing the actual costs of operating a plant over a period of seven years. Problems in operation are described as well as the success of the plant in meeting its objectives over the years.
Publication: CIM Bulletin
Auteur(s): C.JENKINS
Mots clés: Equipment, Maintenance, Diesel generators, Power plant, Energy, Heat recovery system, Exhaust gas system, Storage, Nanisivik Mines Ltd.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: This paper discusses general application for A C variable frequency drives in the mining industry. A review of induction motors characteristics, adjustable frequency controller fundamentals, and three commonly used controllers is presented. General application guidelines for the three different types of controllers; variable voltage input, current source input and pulse width modulated are then reviewed in detail, and an example of the economic benefit of this technology is discussed.
Publication: CIM Bulletin
Auteur(s): KURT D. MITCHELL
Mots clés: Instrumentation, Variable speed drives, Mining industry, Frequency controllers, Torque applications, Motor applications, Energy savings, Economics.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: This paper describes the Cape Breton Development Corporation's experience with the Lovat M-300 tunnel-boring machine at the Donkin-Morien Mine. Between January 3 and December 21, 1984, the 7.6 m (25 ft) diameter TBM advanced 3350 m (10 990 ft). The authors will describe experiences with the machine and highlight the implications of tunnelling machines to underground coal mine development in Canada.
Publication: CIM Bulletin
Auteur(s): J. COADY MARSH, DAN CURRIE
Mots clés: Coal operating methods, Tunnel-boring machines, Mine development, Tunnelling, Ventilation, Drilling, Blasting.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Uncertainty is an important feature of many investments, but it is especially important for mineral properties. Mine properties often entail large investments and fixed commitments. Managers in the mining industry often view price uncertainty as undesirable, due to the possibility that the price of the mined commodity -will fall to a level that prevents the firm from recovering its investment and fixed costs. This paper identifies pitfalls in conventional valuation methods and outlines a new...
Publication: CIM Bulletin
Auteur(s): SCOTT K. PALM, NEIL D. PEARSON, JAMES A. READ JR.
Mots clés: Management, Mineral economics, Option pricing, Mine investments, Mine valuation, Risks, Costs.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: A comparison of diesel engine power ratings with in-service capability, and the selection of unit size and total number of units are discussed in the paper. Engine specific fuel consumption and its evaluation in relation to manufacturers' tolerances and equipment load factors is reviewed along with the suitable plant layout. The potential for heat recovery is discussed in connection with simple and operable recovery systems for exhaust and cooling circuits. Maintenance standards as related to...
Publication: CIM Bulletin
Auteur(s): D.G. CHAMPION
Mots clés: Equipment, Maintenance, Diesel engines, Power ratings, Fuel consumption, Power plants, Heat recovery.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The paper formulates an evaluation procedure for examining the effects of location on the economics of developing mineral deposits. This methodology is applied to assess locational aspects of Nova Scotia's competitive position for mine development relative to other Canadian regions and provinces. The appraisal concerns two representative mine development opportunities, a medium-size open-pit tungsten deposit, and a small underground gold deposit. The influence of regional economic conditions...
Publication: CIM Bulletin
Auteur(s): BRIAN W. MACKENZIE, DALLAS W. DAVIS, MICHEL L BILODEAU
Mots clés: Mine development, Economics, Mining investments, Mineral exploration, Mineral deposits, Gold, Tungsten, Taxation, Nova Scotia.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Dust collectors are used to reduce airborne dust levels generated during crushing at a mining operation and their adequate maintenance is required to ensure effective control of health and safety hazards associated with dusty conditions. Although the pitot traverse technique is commonly employed to balance these dust collectors, the use of an alternative—the equilibrium concentration tracer gas method—is proposed in this paper. This method, which uses sulphur hexafluoride as a...
Publication: CIM Bulletin
Auteur(s): DALE L. McKINNON, JEAN-PIERRE FARANT
Mots clés: Dust collectors, Health and safety, Pitot tube, Tracer gas, Sulphur hexafluoride, Crushing.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: In June 1983, the Computer Applications and Process Control Committee (CAPC) of the Canadian Institute of Mining and Metallurgy (CIM) circulated a questionnaire to coal mining, exploration and consulting companies in Canada to determine the industry's level of interest in holding a workshop-style meeting to introduce company personnel to "state-of-the-art" computer systems designed to carry out specific technical and management functions. It was necessary to conduct the survey to...
Publication: CIM Bulletin
Auteur(s): B.M. DAS, D.B. CROSS
Mots clés: Computers, Computer management, Computer training, Coal industry, Surveys, Computer applications.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Three hydrometallurgical processes (Noranda chloride leach, B.C. Research biological leach and Sherritt-Cominco activated oxygen leach) and the Noranda pyrometallurgical process have served as the basis for design projects in the final year of the chemical engineering program at the University of Toronto. Each member of a team of five or six students devotes about 200 hours to the project and the final report is expected to include an economic analysis.
None of the processes has been...
Publication: CIM Bulletin
Auteur(s): J.G. EACOTT, J.W. SMITH, D.H. NAPIER
Mots clés: Metallurgical education, Hydrometallurgical processes, Design projects, Noranda chloride leach process, B.C. Research biological leach process, Sherritt-Cominco activated oxygen leach process.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The future of the uranium industry in Canada during the next twenty years will be very dependent on political and social issues on a world scale. Technology, as such, will tend to be of lesser importance. Nonetheless, some technical changes can be anticipated.
This paper deals with milling of uranium ore, leaving further processing and nuclear power production to specialists in these fields. An attempt has been made to look at uranium production technology in Canada in relation to that in...
Publication: CIM Bulletin
Auteur(s): M.E. GRIMES
Mots clés: Process technology, Uranium, Hydrometallurgy, Milling, Uranium recovery, Leaching, Comminution, Solvent extraction, Solids-liquid separation, Ion exchange, Tailings management.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Barytes is one of the major components of drilling fluids used in oil and gas well drilling. This mineral's close association with the petroleum industry bestows it with a commodity status not enjoyed by many other industrial minerals. Approximately 85% of world barytes production is used as a weighting agent in oil and gas well drilling while the remaining 15% is consumed mainly in the manufacture of barium chemicals, glass and as a pigment, filler or extender.
Barytes mining began in Nova...
Publication: CIM Bulletin
Auteur(s): JOHN H. FOWLER
Mots clés: Industrial minerals, Barytes, Drilling fluids, Weighting agents, Well drilling, Offshore drilling, Petroleum industry, Production, Exploration, Markets.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Refratechnik, a leading German refractory company, acquired a majority shareholding in Baymag in 1979. This acquisition included the mining rights for a magnesite deposit of exceptionally high purity in the Canadian Rocky Mountains.
The deposit, situated in the Kootenay region of southeastern British Columbia, is of Cambrian age and has ore reserves of 50 million m.t. of magnesite. The Baymag magnesite deposit is one of the purest in the world. The deposit was opened up and mining commenced...
Publication: CIM Bulletin
Auteur(s): HAGEN B. SCHULTES
Mots clés: Industrial minerals, Magnesium oxide, Magnesite, Caustic calcined magnesia, Baymag, Ore processing, Development, Transportation.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Magnesium-bearing salts occur in the Zechstein Basin in the northeastern part of the Netherlands at a depth of 1500 m to 2500 m. Exploration results justified the exploitation of these salts by means of solution mining for the production of refractory grade magnesium-oxide.
This paper discusses design criteria, operation parameters, and methods used for magnesium chloride solution mining by Noordelijke Zoutwinning B. V, (NOZO), an operating company of Billiton International Metals B. V. A...
Publication: CIM Bulletin
Auteur(s): D. BUYZE, H. LORENZEN
Mots clés: Industrial minerals, Salts, Solution mining, Magnesium, Drilling, Brine production, Mud system, Coring, Well patterns, Rock mechanics.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The measurement and evaluation of the noise emanating from an ST4A scoop-tram in an underground slope under a simulated work cycle, and under three conditions of after-treatment systems is covered.
These include scooptram without muffler or filter (bare engine), an in-line small filter, compared to a larger filter, and the larger filter with an in-line muffler in series with fume diluter, which were tested under three engine operating conditions—IDLE, wide open throttle (W. O. T.), and...
Publication: CIM Bulletin
Auteur(s): M.U. SAVICH, J.K. WEGLO
Mots clés: Noise control, Attenuation, Diesel engines, Scooptrams, Load-haul-dump machines, Underground mines, Fume diluters, Mufflers, Filters.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Considerable gold and silver values are lost to flotation tailing from both the Southern Tail orebody and the Main Zone orebody. The underlying mineralogical assemblage of the two ore types is quite different. This paper describes the research strategy employed to determine an economical method to scavenge gold and silver from flotation tailing.
Much of the unrecovered gold in the Southern Tail ore is associated with arsenopyrite while silver losses are probably as unliberated tetrahedrite...
Publication: CIM Bulletin
Auteur(s): P.B. MARCHANT
Mots clés: Milling, Mineral processing, Precious metals, Scavenging, Gold, Silver, Flotation tailings, Cyanidation, Bioleaching, Pressure leaching.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: In October of 1980, Fording's 15 000-ton capacity clean coal silo was put into operation. The silo was unique in that it was designed to allow the mass flow of material, coupled with a sophisticated computer-controlled dynamic loadout/weighing system.
On May 1, 1982, an explosion, attributed to a methane buildup, devastated the top of the silo. As a contingent plan to minimize the effect of the production loss, the conveyance to the silo top was reconstructed and the silo was back in...
Publication: CIM Bulletin
Auteur(s): D.A. STOKES
Mots clés: Coal preparation, Coal silo, Explosion, Methane, Dust emission, Methane control, Ventilation, Fording Coal Limited.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The geological composition of strata immediately adjacent to coal seams has a significant effect on the safe and efficient extraction of coal from underground mines of the Sydney coalfield. Geological features such as paleo-sandstone river channels, seam splits, floor rolls, paleo-soils and stone-filled rupture features can rapidly alter the competency of immediate roof and floor strata, significantly reduce the height of the coal seam, cause rapid variations in seam gradient and influence...
Publication: CIM Bulletin
Auteur(s): STEVE FORGERON, BRENDAN MacKENZIE, KEVIN MacPHERSON
Mots clés: Coal mining, Coal extraction, Mine geology, Paleo-sandstone river channels, Seam splits, Floor rolls, Paleo-soils, Ruptures, Sydney coalfield.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The whole work carried out both in situ and in laboratory by a research group of the West German collieries is presented. This work has led to a design method of steel arch supports for gate roadways that gives full satisfaction in this particular coalfield. The method accounts for mining depth, the mining system (advancing or retreating), thickness of the coal seam and other parameters.
Full statistics are then given on gate roadway supports of the ECCS (European Community for Coal and...
Publication: CIM Bulletin
Auteur(s): PIERRE CHOQUET
Mots clés: Steel, Steel arch, Supports, Coal mining, Design, Experimental results, Field measurements, Strata control.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: The McDame chrysolite asbestos deposit located near Cassiar in northern British Columbia is found at depth and on trend to the southeast of the currently mined open-pit Cassiar asbestos deposit. The ultramaflc rock hosting the McDame is serpentinized peridotite of the Upper Paleozoic Sylvester Group contained in an ophiolitic sequence preserved within a lower thrust sheet of the Sylvester Allochthon. The Sylvester stratigraphic package is a series of thrust slices composed of argillite, tuff...
Publication: CIM Bulletin
Auteur(s): A.A. BURGOYNE
Mots clés: Industrial Minerals, Chrysotile asbestos, McDame deposit, Geology, Exploration, Exploration surveys, Drilling.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: A significant development in froth flotation technology has been the emerging industrial acceptance of column flotation during the past few years. Flotation columns are being employed now in several Canadian base metal concentrators and they are being considered for a wide range of flotation applications throughout North and South America. Since the operating principles of a column differ markedly from those of conventional flotation machines, and have been poorly understood, scale-up of...
Publication: CIM Bulletin
Auteur(s): G.S. DOBBY, J.A. FINCH
Mots clés: Flotation, Flotation columns, Modelling, Mineral processing, Concentrators, Copper cleaning.
Numéro: 891
Volume: 79
Année: 1986
Texte
Sommaire: Two continuous coal zones occurring in a 2500ft (762 m) thick section of the Upper Carboniferous Pictou Group (Westphalian C and D) have been encountered in five offshore wells drilled for oil and gas in the Gulf of St. Lawrence. They correlate, by means of fossil spores, with thick coals of the Mabou and Inverness coalfields situated at theeastern margin of the Basin. Therefore, the presence of a large submarine coalfield of at least 18 000 sq mi. (46 620 km2) is indicated. This compares...
Publication: CIM Bulletin
Auteur(s): PETER A. HACQUEBARD
Mots clés: Coal mining, Coal exploration, Offshore coal, Gulf of St. Lawrence Coal basin, Mabou coalfield, Inverness coalfield, Sydney coalfield, Petrographic composition, Coal quality.
Numéro: 891
Volume: 79
Année: 1986
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