Repairs of Brunswick Mining, Smelting and Fertilizer concentrate and bulk handling system

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Mots clés : Materials handling;Maintenance engineering
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Publication: CIM Bulletin
Auteur(s): GASTON GINGRAS
Mots clés: Maintenance, Open pit mining, Equipment.
Numéro: 918
Volume: 81
Année: 1988
Texte
Publication: CIM Bulletin
Auteur(s): A.E. HALL, J.-P. SAINDON, L.D. NEL, S.G. HARDCASTLE
Mots clés: Heating system, Exhaust air, Gas concentrations, Dust Concentrations, Underground mining, Mining technology
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: This paper studies the progress made by hydraulic shovel manufacturers over the last few years, particularly in the areas of productivity increase and operating cost reductions.
Five years ago, it was widely considered that the unit production cost for a hydraulic shovel in a mining application was double that of a cable shovel in the same application. The hydraulic machine manufacturers have taken up this challenge, and modern improvements in design, coupled with changes in maintenance...
Publication: CIM Bulletin
Auteur(s): BRIAN REID
Mots clés: Open pit mining, Technology, Equipment, Hydraulic machines.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: This paper shows how simple reliability concepts such as mean time between failures and mean repair time can be used efficiently to help increase equipment availability and so reduce the economic losses associated with unreliability.
More specifically, the paper shows how these simple concepts can be used in maintaining an appropriate balance between fleet failure and repair rates and how they can be used for setting up priority repair rules for queuing equipment.
Publication: CIM Bulletin
Auteur(s): JEAN-LUC COLLINS
Mots clés: Equipment maintenance, Computer applications, Open pit operations, Downtime.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: The underground operations of Kidd Creek Mines uses an average of 450 U.S. gpm water during regular operations, and discharges an average of 800 U.S. gpm through consecutive staged pumping lifts of 1200ft.
Water is used as a flushing medium for the drilling operations and as a dust suppressant for drawpoint mucking. The water retains an average of 5% suspended solids by weight which is removed underground before being pumped to the surface.
This paper outlines the treatment of the mine water...
Publication: CIM Bulletin
Auteur(s): M.K. WALTER
Mots clés: Underground mining, Water treatment, Sludge handling, Kidd Creek Mines, Waste water control.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: This paper covers the planning, development, and mining of an underground pillar complex using a bulk mining method. To achieve the long-term goal of continually improving our operating processes,  all cut-and-fill and undercut-and-fill workplaces at Thompson Mine have been evaluated for their conversion potential to the bulk method referred to as Vertical Block Mining (V.B.M.).
Since December 1979, conversion has occurred to the extent where 80% of the ore hoisted is mined using...
Publication: CIM Bulletin
Auteur(s): GEORGE STEWART, ROD MACLEAN
Mots clés: Underground mining, Mine development, Pillars, Mining methods, Blasting methods, Vertical block mining.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: In China, the electromagnetic induction initiating system for blasting engineering has been greatly developed in recent years. With this system, the total number of detonators that may be blasted in each round has been increased from 420 to 940 as a result of the invention of a powerful exploder, and the length of legwires of a detonator has reached 12 metres. These developments make the new system suitable for blasting engineering of medium scale. Another attractive feature of this system is...
Publication: CIM Bulletin
Auteur(s): YAN HONGJIU, LIU LICHING
Mots clés: Electromagnetic induction, Explosive engineering, Initiating systems, Blasting.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: Loss of coal fines in reject slurries limits the yield of coal cleaning operations. Difficulties in handling fines also limit the extent of physical cleaning in treating coals with finely-disseminated impurities. Selective oil agglomeration allows even extreme fines to be processed and offers some novel approaches for coal cleaning and utilization.
The oil agglomeration process for the recovery and benefi-ciation of fine and ultrafine coal has now been commercialized by the Chemical Engineeri...
Publication: CIM Bulletin
Auteur(s): C.E. CAPES, R.D. COLEMAN, J.D. HAZLETT, K.A. JONASSON, W.L THAYER
Mots clés: Coal recovery, Beneficiation, Technology.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: The Mount Douglas Granite constitutes the eastern part of the Saint George Batholith and contains the youngest, most differentiated phases of the batholith. It also contains extensive endogranitic, low-grade, Sn-W-Mo-bearing sheeted vein systems. Early phases of the Mount Douglas Granite are coarse- to medium-grained, seriate granites that represent the slowly cooled carapace of the intrusion. Late phases are medium- to fine-grained, equigranular and porphyritic granites that were accompanied...
Publication: CIM Bulletin
Auteur(s): M.J. McLEOD
Mots clés: Economic geology, Geochronology, Sn-W-Mo bearing veins, Mount Douglas Granite, Geochemistry, Mineralization.
Numéro: 918
Volume: 81
Année: 1988
Texte
Sommaire: Improved rail production techniques provide new options for the rail user. Steelmaking improvements offer tighter composition control, lower oxide and sulphide counts, greater control of segregates and freedom from hydrogen problems. New ultrasonic, laser and eddy current equipment gives printout information on surface flatness, straightness and internal condition. These have come along at a time when dramatic changes have occurred on the rail heat treatment scene. Rails can now be deep...
Publication: CIM Bulletin
Auteur(s): W.H. HODGSON, R.R. PRESTON
Mots clés: Metallurgy, Rail technology, Technology, Steelmaking, Eddy current techniques
Numéro: 918
Volume: 81
Année: 1988
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