Development and practice of the Falconbridge chlorine leach process

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Mots clés : Falconbridge;Kristiansand refinery;Chlorine leach process;Capacity increases;Operating improvements
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Sommaire: This experiment was carried out to see whether copper-iron ingots from Late Bronze Age hoards could have been produced by smelting ferruginous copper ores. Since ferruginous copper-ores are chalcopyritic, chalcopyritic concentrate from a present day copper mine was dead roasted in our experiment in lieu of a rich chalcopyritic ore. Charcoal was used as a reducing agent in the reduction of calcine (i.e., a product of dead-roasting), and quartz sand was used as a flux. Two separate metallic...
Publication: CIM Bulletin
Auteur(s): A. Paulin, J. Roth, S. Spaic
Mots clés: Archaeometallurgy, Bronze Age, Smelting, Copper, Copper-iron alloy, Ramo-secco bar.
Numéro: 1051
Volume: 94
Année: 2001
Texte
Sommaire: The paper presents a study on the oxidation of polymetallic gold ore by oxygen in an autoclave. It presents optimum parameters of autoclave leaching of sulphide refractory ore in self-generated sulphuric acid solutions aiming to get products with favourable technological characteristics from which precious and other useful metals can be recovered. A high partial oxygen pressure (1.5 MPa to 2 MPa), high leaching temperature (190¡C to 200¡C), pulp density 80 g/L to 240 g/L, ore fraction size 76...
Publication: CIM Bulletin
Auteur(s): D. Sinadinovic, R. Vracar, Z. Kamberovic
Mots clés: Oxidation, Polymetallic gold, Oxygen, Leaching, Pulp density.
Numéro: 1051
Volume: 94
Année: 2001
Texte
Sommaire: Characterization of dust from Boliden Mineral ABÕs copper-plant in Sweden was carried out using chemical analysis, X-ray diffraction analysis, energy dispersive analysis and wave length analysis using electron microprobe equipment. Dust from four different locations was characterized: the electrostatic precipitator (ESP) after the roasting furnace; the ESP after the copper smelting furnace; from the copper converter ventilation bag house filter; and from the bag house filter collecting dust...
Publication: CIM Bulletin
Auteur(s): C. Samuelsson
Mots clés: Characterization, Dust, Electrostatic precipitator (ESP), Smelter, Copper, Vaporization, Condensation.
Numéro: 1051
Volume: 94
Année: 2001
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