The beneficiation of Canadian garnet ores at CANMET


Garnet occurs in schists and gneisses in all provinces of Canada, but mainly in Quebec and Ontario. There is currently a renewed interest in exploration for economic sources of garnet for abrasive applications because of the inherent dangers from exposure to ground silica from sandblasting operations.
High-quality garnet is used for lapping and grinding of glass and ceramics; for coated and bonded products such as sandpaper and cloth; and abrasive wheels for grinding and finishing various metals, woods, rubber and plastics. Low-quality garnet is used for cleaning and conditioning aluminum and other soft metals, particularly by aircraft manufacturers. Garnet may be added to grouting cements for oil-well drilling applications, and it has also been used for low- to medium-level radiation shielding.
Garnet has been studied extensively by CANMET and its predecessor, Mines Branch, between 1917 and 1990. Twenty-nine studies relating to various aspects of beneficiation are presented and a review of the more important studies is presented. The information includes mineralogy, beneficiation methods, product sizes and analyses.
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Summary: The On-Stream Analyzer has proven, and is still proving to be, an extremely valuable tool for the control of flotation circuits. This paper examines the possibility of going further in the utilization of the analyzer results by using a real-time material balance program to calculate the mass flow rates within the streams of a circuit for process control, analysis and optimization as well as for the detection of sensor malfunction. The material balance algorithm improves measurements and give...
Publication: CIM Bulletin
Author(s): C. Bazin, A.R. Trusiak, D. Hodouin
Issue: 995
Volume: 88
Year: 1995
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Summary: Line Creek Resources Ltd. produces three million clean tonnes per year of metallurgical and thermal coals for the international market. The mining operation, which is located in the mountains of southeastern British Columbia, produces coal from four pits by conventional truck and shovel methods.
The South Pit, which has been in operation since 1982, has a benched highwall 490 m in height. Shallow dipping coal seams at the base of the syncline formation will be exposed in the highwall over the...
Publication: CIM Bulletin
Author(s): R. Williams
Issue: 995
Volume: 88
Year: 1995
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Summary: The potential use of industrial and municipal waste glass as a partial pozzolanic replacement for Normal Portland cement in mine backfill has been investigated. Considerable quantities of glass are currently discarded into landfill sites at high cost to municipal and industrial users with no foreseeable environmental benefits being gained by such disposal. This research study was undertaken to assess the viability of using ground waste glass materials as partial binder replacement of Portland...
Publication: CIM Bulletin
Author(s): J.F. Archibald, D.O. DeGagne, P. Lausch, E.M. De Souza
Issue: 995
Volume: 88
Year: 1995
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Summary: The optimal geochemical parameters required to form ettrin-gite in a lime-remediated site have been investigated with the use of thermodynamic modelling. The speciation of sulphate and 10 metals analyzed in samples of a mine tailing from northern Quebec was calculated with a computer model. The model also includes calcium, which would result from the addition of lime to the system. Two speciation calculations were done. The first one is a hypothetical speciation before the onset of precipitat...
Publication: CIM Bulletin
Author(s): A.M.O. Mohamed, J.F. Boily, M. Hossein, F.P. Hassani
Issue: 995
Volume: 88
Year: 1995
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Summary: Acid mine drainage (AMD) research under the MEND program has been ongoing since 1988 at the Heath Steele Mines waste rock piles including sulphide material, outside Newcastle, NB. In 1989 approximately 10,000 mt of waste rock was placed on a prepared sand base with an underlying impermeable membrane. The waste rock pile was heavily instrumented for measuring oxygen concentrations and temperatures. In September 1991, a composite soil cover designed for the Heath Steele climatic conditions,...
Publication: CIM Bulletin
Author(s): Alan V. Bell, Mike D. Riley, Ernest K. Yanful
Issue: 995
Volume: 88
Year: 1995
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Summary: Autogenous grinding is used quite frequently for mineral comminution as a result of its lower capital and operating costs. However, it is more difficult to control than conventional grinding, particularly when the autogenous or semiautogenous mill is the only comminution stage (i.e. no secondary grinding is available). Analysis of the control strategy used then becomes extremely important, a task that is greatly simplified by the use of an empirical dynamic simulator.
This paper presents the...
Publication: CIM Bulletin
Author(s): J. Valenzuela, R. del Villar, M. Bourassa, S. StArnaud
Issue: 995
Volume: 88
Year: 1995
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