The Equity leach plant

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Mots clés : Process development;Filtering;Leaching;Plant design;Process technology;Antimony;Arsenic
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Publication: CIM Bulletin
Auteur(s): F.J. MUNN
Mots clés: Rock mechanics, Pitwall stability, Wall failures, Coal mining, Wall control, Monitoring, Backfill, Cardinal River Coals Ltd.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: This report describes the development and effective use of shaped charges as part of the Elliot Lake Mine Roof Stability Project to remotely remove the heads from roof bolts. With a slight modification, these same shaped charges are being recommended for use to the Brunswick Mining and Smelting Corporation Limited (Mining Division), to cut steel cable bolts.
Publication: CIM Bulletin
Auteur(s): E. CONTESTABILE, T.R. CRAIG
Mots clés: Rock mechanics, Shaped charges, Roof stability, Cable bolts, Explosives, Support systems, Loading.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: The selection of material comprising a backfill is, of economic necessity, site dependent. Nevertheless, given the existing range of typical components—coarse waste, alluvial sand, tailings— a balanced or optimal choice is no straightforward matter. A new design approach toward deciding what constitutes an optimum combination of backfill material promises to be useful. In particular a 'binder' number, based on the mean distance between aggregate particles, specific surface and...
Publication: CIM Bulletin
Auteur(s): G. SWAN
Mots clés: Rock mechanics, Mine backfill, Backfill design, Mill tailings, Aggregates, Grading, Cement, Compressive strength.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: Competition in the world potash market has increased significantly since the late 1970s. The failure of consumption to grow at expected levels has led to industry over-capacity, a situation which is likely to persist at least until 1990. Individual Saskatchewan producers and their offshore marketing company, Canpotex, have responded to this challenge by increasing mining efficiency, developing more cost-effective and reliable transportation systems and establishing innovative financing and...
Publication: CIM Bulletin
Auteur(s): DOUGLAS A. KARVONEN
Mots clés: Industrial minerals, Potash, Marketing, Domestic market, Offshore market product development, Transportation, Potassium chloride, Fertilizers.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: A sample of flotation feed from Bakertalc Inc., Highwater, Quebec was subjected to flotation evaluation to improve the recovery of talc. A number of alternative frother/collectors and depressants as well as flotation parameters including pH, conditioning time, frother/collector concentration and pulp density were assessed. In addition, the possibility of using a size coarser than that currently employed for flotation (95% minus 50 /j,m) was investigated.
As far as possible, a laboratory...
Publication: CIM Bulletin
Auteur(s): P.R.A. ANDREWS
Mots clés: Industrial minerals, Talc, Flotation, Recovery, Milling, Grinding, Processing, Frothers, Depressants.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: This paper describes a methodical approach to the estimation of the orientation and the magnitude of in-situ stresses. The study was performed at the Ruttan Mine, Sherritt Gordon Mines Ltd., a 6,000 T.P.D. underground operation, located in northern Manitoba, Canada. It involves an initial estimate to be made based upon:

structural interpretation
virgin stress measurements conducted in other areas (world wide, regional)

 The verification of the prevailing stress regime was...
Publication: CIM Bulletin
Auteur(s): R. PAKALNIS, H. MILLER, T. MADILL
Mots clés: Rock mechanics, In-situ Stresses, Virgin stress measurements, Structural geology, Fractures, Boreholes, Debonding, Overcoring.
Numéro: 884
Volume: 78
Année: 1985
Texte
Sommaire: Falling rock is one of the major causes of serious injuries and deaths in Swedish mines. The research at the Division of Mining and Underground Construction was therefore directed toward controlled blasting in hard intense jointed rock.
The project was started with an extensive literature review. Model tests with a new equivalent model material have been initiated to find ways of improving blasting techniques. The result showed that long cracks arise at the perimeter holes when there is a...
Publication: CIM Bulletin
Auteur(s): AGNE RUSTAN, TORBJORN NAARTTIJARVI, BENGT LUDVIG
Mots clés: Rock mechanics, Controlled blasting, Hard intense jointed rock, Rock stability, ANFO, Explosives, Cutblasting, Blasting, Drilling, Initiation techniques, Vibration measurements.
Numéro: 884
Volume: 78
Année: 1985
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