AOSTRA underground test facility: progress and potential

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Mots clés : AOSTRA;Oil sands;Mine development;Athabasca oil sands;Underground test facility
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Publication: CIM Bulletin
Auteur(s): J.J. Baz-Dresch
Mots clés: Underground mining, Exploration, Mining methods, Mine design, Mine development, Production.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: A microcomputer-controlled multi-probe K-40 monitoring system was developed internally for the Phase II mill at the Lanigan potash mine. The K-40 probes were mounted in a variety of positions in several process streams, ranging from dry ore on a conveyor belt to brines and slurries. A description will be presented of the objectives, the equipment and the difficulties encountered in correlating results.
Publication: CIM Bulletin
Auteur(s): D.K. Storer
Mots clés: Monitoring systems, K40 monitoring system.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: There has been a consistent move in recent years to continuously cast small billets while utilizing ceramic stream protection between tundish and mould. The need to have ceramic stream protection has developed from a need to improve billet surface quality by submerged pouring. The need to protect the ladle to tundish stream in conjunction with tundish to mould protection is explained.
The continuous casting of thin slabs is at the development state and will require a great deal of ceramic...
Publication: CIM Bulletin
Auteur(s): A.J. Rigby
Mots clés: Refractory metallurgy, Ceramics, Continuous casting.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: The importance of vacuum degassing units to steel companies when used to produce extra low carbon deep drawing steels for automotive customers (I-F steels) has been established. These units are now required to vacuum decarburize and homogenize the heat, as well as be a ladle metallurgy station with final additions of alloys being made to satisfy stringent metallurgical requirements. These activities place great strain upon refractory materials. Procedures have been developed in the Armco RH...
Publication: CIM Bulletin
Auteur(s): Bruce H. Baker, Barry P. Schrader
Mots clés: Refractory design, Metallurgy, Degassing, Vacuum degassing.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: Since the late 1970s, extensive work has been carried out at Placer Dome Inc. 's Dome Mine to develop new mining methods and equipment to improve the productivity of narrow vein mining (Mining Magazine, Oct. 1986, pp. 308-317; Mar. 1988, pp. 176-179). This work has been focused on mining vein-type deposits varying from 0.9m to 1.5 m in width using open sloping and cut-and-fill mining methods.
In 1989, the Dome Mine entered into a contract with Ram Raising Ltd., a joint venture company of...
Publication: CIM Bulletin
Auteur(s): B.E. Robertson, J.T. Vehkala, S.S. Kerr
Mots clés: Mining methods, Productivity, Narrow-vein mining.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: Amok Ltd. /Cluff Mining operates a uranium mine at Cluff Lake in northern Saskatchewan. The project consists of one open pit and one underground mining operation along with a full-scale milling installation.
The underground sloping operations are of the narrow vein type and are done between two levels 50 m apart. The mining method is undercut with concrete backfilling. Cuts are 3.5 m in height and can be as narrow as 1.4 m in width.
Sloping operations are mechanized utilizing a CT-500E...
Publication: CIM Bulletin
Auteur(s): F. Lambert
Mots clés: Underground mining, Equipment, Mine production.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: Batch flotation testwork demonstrated that a low-grade chromite ore from Bird River, Manitoba, was best floated at pH 2 using Armac C (coco amine acetate) collector and sulphuric acid as pH modifier. A grind of 100% minus 150 fj,m was necessary for liberation, and flotation selectivity was greatly enhanced by prior desliming. A concentrate analyzing 24.2% Cr2O3 with a recovery of 90.2% was obtained, after three cleaning stages, from ore grading 6.05% Cr2O3. Total rougher collector concentrati...
Publication: CIM Bulletin
Auteur(s): P.R.A. Andrews
Mots clés: Mineral processing, Chromite, Flotation, Industrial minerals.
Numéro: 938
Volume: 83
Année: 1990
Texte
Sommaire: The geochemical characteristics of Early Paleozoic volcanic rocks are used to establish the following tectono-volcanic regimes in the northeastern mainland Appalachians: foreland continental rift vol-canics; fore-arc ophiolites; island-arc volcanics; back-arc ophiolites; and back-arc ensialic volcanics. A Late Precambrian calc-alkaline magmatic arc bounds the Early Paleozoic volcanics to the southeast.
The Precambrian calc-alkaline volcanics of the Caledonian Highlands, primitive Cambro-Ordov...
Publication: CIM Bulletin
Auteur(s): L.R. Fyffe, C.R. van Staal, J.A. Winchester
Mots clés: Geochemistry, Volcanic geochemistry, Sulphide deposits.
Numéro: 938
Volume: 83
Année: 1990
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