Stochastic evaluation of sampling errors in mineral processing streams

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Sommaire: No abstract is available for this paper
Publication: CIM Bulletin
Auteur(s): R. Levac, R.A. McIvor
Numéro: 1056
Volume: 94
Année: 2001
Texte
Sommaire: The results of a field-scale study involving in situ leaching of copper ore tailings using sulphuric acid as the leaching agent, injection wells to introduce the leaching solution and extraction wells to recover the copper-enriched pregnant leaching solution are presented. The study was performed at an abandoned tailings disposal site using a battery of injection and extraction wells. The medium was characterized through the determinations of physical, chemical, mineralogical, and hydrodisper...
Publication: CIM Bulletin
Auteur(s): J.F. Munoz, P. Rengifo, A. Suazo, C.D. Shackelford, M. Vauclin
Numéro: 1056
Volume: 94
Année: 2001
Texte
Sommaire: Tailings from the nickel refinery in Copper Cliff, Ontario, consist of fine silicates mixed with a variable amount of conductive and magnetic minerals mainly associated with sulphides and iron oxides. Subsequent oxidation of sulphide-rich phases within the tailings results in the formation of an acidic leachate that may contain significant concentrations of trace metals. Mapping the spatial distribution of regions of higher sulphide concentration therefore provides insight into the distributi...
Publication: CIM Bulletin
Auteur(s): J. Shang,B. Morris, P. Howarth
Numéro: 1056
Volume: 94
Année: 2001
Texte
Sommaire: Sulphide concentrates may exhibit self-heating to various degrees during storage or shipping, the worst cases presenting a serious hazard from fire and SO2 emission. Based on measurements of heating rates on a wide variety of concentrate samples in a special apparatus, combined with field experience, a methodology has been developed which allows concentrates to be rated for their heating potential. This has proven to be very useful in practice, for example, in deciding on the need to take...
Publication: CIM Bulletin
Auteur(s): F. Rosenblum, J. Nesset, P. Spira
Numéro: 1056
Volume: 94
Année: 2001
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