Application of biotechnology for treatment of nitrogen compounds in gold mill effluents

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Publication: CIM Bulletin
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: XPotential Products Inc. has developed technologies to convert auto shredder residues and other forms of plastic waste into useful products such as posts suitable for retaining walls and parking curbs. The technology is competitive provided low-cost plastic waste is available, and could have applications throughout the world. The paper describes the technology used and illustrates the various processing steps.
Publication: CIM Bulletin
Auteur(s): J. Lazareck
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: The treatment of aqueous CuSO4-H2SO4-As-Sb solutions by electrodialysis in order to separate and concentrate species of interest has recently been studied. Results show that it is possible to separate copper from arsenic in electrodialysis cells. The separation of copper from antimony is also possible. Transport rate ranges that could be achieved, depending on experimental conditions, are 0.2 to 0.6 mol per hour per square metre of membrane for copper, 0.65 to 2.8 for sulphate, and 0.016 to...
Publication: CIM Bulletin
Auteur(s): L. Cifuentes, J.M. Casas
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: Since its commercialization thirty years ago, the Recoflo® short bed ion exchange process has been extensively utilized for the recovery of a wide variety of acids and metal salts. In addition to a reduction in resin bed height from 200 cm to 300 cm to 15 cm to 60 cm, the process has a number of features such as utilization of fine mesh resins in a compressed bed which together make it ideal for a number of applications. The process has been extensively exploited, for example, in the metal...
Publication: CIM Bulletin
Auteur(s): C.J. Brown
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: Gypsum scrap generated from wallboard manufacturing, construction and deconstruction activities in North America, Europe and Japan is a recognized environmental problem. Landfill disposal of this gypsum scrap is problematic, with deposits often creating hydrogen sulphide emissions and metallic sulphide groundwater leachates. Of these regions, Europe is the most advanced in dealing with the issue having enacted legislation, which will come into effect in July 2005 that will strongly encourage...
Publication: CIM Bulletin
Auteur(s): J.A. McCamley
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: A method for determining the fineness of Au in electrum from the composition of fahlore coexisting with pyrite and chalcopyrite is presented. This method is based on previously published experimental brackets and activity-composition models for electrum and fahlore, and it is potentially useful for defining temperatures of hydrothermal mineralization and retrograde evolution of precious metals deposits. The authors demonstrate that it successfully predicts compositions of electrum reported...
Publication: CIM Bulletin
Auteur(s): R.O. Sack, F.W. Brackebusch
Numéro: 1081
Volume: 97
Année: 2004
Texte
Sommaire: An open pit a mine can be thought of as a business unit, with capital, operating and maintenance costs that exceed those of many large business enterprises. Truck-and-shovel operations have an inherent “looseness” to them, unlike manufacturing or processing operations where production components are tightly coupled (through conveyors, material flow in pipes, assembly lines, and so on). Effective monitoring and control of truck-and-shovel operations requires a combination of both information...
Publication: CIM Bulletin
Auteur(s): P.L. Richard
Numéro: 1081
Volume: 97
Année: 2004
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