Major cleat trends in Alberta Plains coals

Cette publication n'est pas offerte dans votre langue; certains de ses renseignements ont été préremplis pour la version française.
Mots clés : Coal Mining;Alberta plains coal;Cleat;Underground mining;Bearings;Fracturing
Accés complet à Document technique
Version PDF pour 20,00 $
Recherche
Trier par :  Pertinence
Affichage des résultats 1 - 13
Texte
Sommaire: This paper primarily deals with the application of wearfacing materials and their role within a well-established preventive maintenance welding program. Some examples are shown, as well as a synopsis of possible benefits and a compendium of methods and materials.
Publication: CIM Bulletin
Auteur(s): T. RICHARD DAVIES
Mots clés: Wearfacing, Maintenance, Equipment, maintenance, Welding, Machinery, Abrasive wear, Corrosion, Hardfacing
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: This paper describes the planning, development and operation of the Highvale Mine to supply coal to both the existing Sun-dance and the approved Keephills thermal power plants of Calgary Power Ltd. Reference is also made to the company's Whitewood Mine, which feeds the Wabamun thermal plant.
Publication: CIM Bulletin
Auteur(s): C. G. WILLIAMS
Mots clés: Coal mining, Highvale Mine, Calgary Power Ltd., Thermal power, Power plants, Whitewood Mine, Sundance plant, Keephills plant, Wabumum plant, Strip mining, Reclamation
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: External-detonation-generated plasmas, highly ionized zones of reacting material ejected from the surface of detonating explosive charges, are shown to be the cause of channel desensitization, i.e., the self-quenching of a detonating explosive column loaded in a borehole with an air annulus between the explosive and the borehole wall.
Publication: CIM Bulletin
Auteur(s): LEX LUDY
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: The Tanco pegmatite at Bernic Lake, in the Lac du Bonnet mining district of southeastern Manitoba, is a unique deposit of Li, Rb, Cs and Ta, with substantial reserves of Be and several industrial minerals. This paper summarizes the present state of understanding the regional geology, structural setting, zoning, mineralogy and geochemistry of the pegmatite, and the mining and ore-processing methods used in its exploitation.
Publication: CIM Bulletin
Auteur(s): R.A. GROUSE, P. CERNY
Mots clés: Pegmatites, Tanco pegmatite, Geology, Bernic Lake, Lithium, Rubidium, Cescium, Tantalium, Berylium, Bird River greenstone belt, Mineralogy
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: The programmable Logic Controller (PLC), at its present stage of evolution, is now considered as a mature control system. The PLC combines the solid-state reliability of hardwired logic and computer control systems with the simplicity of a relay ladder logic. Relay symbolic programming through a function-oriented keyboard provides a means which plant personnel can easily become accustomed to work with.In a large coal facility, it is shown that the control engineer can provide improved control...
Publication: CIM Bulletin
Auteur(s): L W. KRAHENBIL
Mots clés: Coal preparation, Process control, Programmable Logic Control, Control systems, Computers
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: Environmental regulations require means for controlling emissions of SO2, NOX and paniculate when burning coal. The combustion of coal in limestone fluidized beds is one of the most promising techniques for the necessary reduction in emissions. Fluidized-bed firing, furthermore, offers potential economies in capital equipment.The world's largest steam generator applying fluidized-bed techniques was built under the sponsorship of ERDA and installed in Rivesville, West Virginia. This paper...
Publication: CIM Bulletin
Auteur(s): P.J. ADAMS
Mots clés: Coal processing, Fluidized beds, Sream, generation, Limestone, Environmental control, Rivesville plant, Georgetown system
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: This paper is a review of material selection considerations concerning protective coatings in the mining industry. The discussion will cover both capital-dollar projects and maintenance requirements. Emphasis will be on industrial finishes for structural steel and process equipment subjected to aggressive atmospheres.The presentation will cover the total needs of a job, emphasizing not only the owner's requirement for a cost-effective system during plant operations, but also taking into...
Publication: CIM Bulletin
Auteur(s): D.D. DOWNING
Mots clés: Corrosion, Materials Engineering, Coatings, Paint, Structural steel, Process equipment, Maintenance
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: Recent drilling programs have shown that the in-situ coal resources of Nova Scotia are very substantial. The grand totals of the measured, indicated and inferred categories amount to 232 m, 646 m and 993 m tons, respectively. This vast quantity of coal occurs essentially in five main fields: Sydney, Mabou, Port Hood, Pictou and Springhill. The largest resources (84% of the total) occur in the submarine area of the Sydney coalfield.With a 65% recovery rate, there are at present 150 m tons of...
Publication: CIM Bulletin
Auteur(s): PETER A. HACQUEBARD
Mots clés: Coal resources, Nova Scotia, Coal geology, Sydney coalfield, Mabou coalfield, Port Hood coalfield, Pictou coalfield, Springhill coalfield, Offshore exploration, Riversdale Group, Cumberland Group, Pictou Group, Seam splitting Phalen seam
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: Altered and unaltered coal from the Star-Key Mine near Edmonton, Alberta has been tested under compression and under tension.The test results showed that altered coal samples have an appreciably lower strength than unaltered coal. Altered coal samples do not give a linear load-displacement curve, peak strengths are poorly defined and yielding is observed over a range of loads, so the material can be regarded as relatively plastic. However, unaltered coal samples produce a linear loading curve...
Publication: CIM Bulletin
Auteur(s): M. L JEREMIC, D. M. CRUDEN
Mots clés: Coal mining, Coal strength, Rock mechanics, Star-Key mine, Compression, Tension, Weathering, Pillars
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: This paper will outline the problems and solutions of the new-generation washeries, as well as the recent technological advances which are being considered for future coal preparation plants. The subjects to be covered will include:— reasons for considering coal preparation plants;— raw coal crushing and handling systems;— types of coal cleaning equipment being used versus new equipment being considered;— fine coal circuit sizing;— clean coal centrifuging and...
Publication: CIM Bulletin
Auteur(s): BRIAN RAYMOND, BOYD PAYNE
Mots clés: Coal preparation, Metallurgical coal, Coal handling, Coal cleaning, Classifying, Dewatering, Drying, Storage, Loading
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: An experimental study of the settling characteristics of a washery effluent originating as tailings from a froth flotation circuit was undertaken by using a systematic approach to select the most appropriate flocculant(s) under predetermined conditions. Selection and evaluation procedures which greatly reduce the effort required to select flocculants are described.The results show that, although different flocculants display superiority at different ranges of dosage, Separan MG 700 (Dow) is...
Publication: CIM Bulletin
Auteur(s): H. A. HAMZA
Mots clés: Coal preparation, Coal washeries, Flocculation, Flotation, Froth Flotation , Washery effluents, Tailings, Settling rates, Cardinal River Coals Ltd., Reagents
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: In New Brunswick, during the 1970's, rocks of the Lower Carboniferous Windsor Group in the Moncton Basin of the Fun-dy Epieugeosyncline have been the target of intense exploration and drilling programs. Sylvinite ore was discovered in three structural basins of the Moncton Basin near Sussex through a drilling program sponsored jointly by the Federal Department of Regional Economic Expansion and the New Brunswick Department of Natural Resources.In 1973, exploration and development rights to...
Publication: CIM Bulletin
Auteur(s): PAULW. KINGSTON, DONALD E. DICKIE
Mots clés: Geology, Potash, Industrial minerals, New Brusnwick, Windsor Group, Moncton Basin, Sylvinite, Dunsinane synclinoryum, Marchbank syncline
Numéro: 802
Volume: 72
Année: 1979
Texte
Sommaire: All indications point to a growing market for thermal coal in Japan as part of the country's current energy policy formulation process. The Ministry of International Trade and Industry forecasts imports of 16 million tons a year in 1985 and 40 million tons in 1990—a twenty-fold and forty-fold increase over the present level. This potential reflects Japan's over-all serious and increasing concern for security of energy supplies and its resultant need to seek alternative sources. Nuclear...
Publication: CIM Bulletin
Auteur(s): P. LAFLEUR
Numéro: 802
Volume: 72
Année: 1979
Activé par Coveo Enterprise Search