197th Meeting - Toronto, Ontario, Canada

May 14-18, 2000


Q1 - Fifth International Symposium on Electrochemistry in Mineral and Metal Processing

Industrial Electrolysis and Electrochemical Engineering Division/ Energy Technology Division

Monday, May 15, 2000

York Room, 2nd Floor

Flotation I

Co-Chairs: F.M. Doyle and R. Woods

10:00969 Influence of Grinding Media on the Electrochemistry of Sulphide Flotation - J.O. Leppinen, R.P. Kalapudas (Technical Research Centre of Finland), and K. Heiskanen (Helsinki University of Technology) PDF
10:30970 The Mechanism of Oxidation of Ethyl Xanthate by Hydrogen Peroxide - E. Silvester (CSIRO Minerals - Clayton (Australia)), D. Truccolo (Kodak - Australia), and F.P. Hao (CSIRO Minerals - Clayton (Australia)) PDF
11:00971 Comparison of Thionocarbomate with Xanthate - T. Pecina-Trevino (CINVESTAV-IPN Unidad Saltillo), C. Sui, and J. Finch (McGill University) PDF
11:30972 Investigation of Hydrophobicity/Hydrophilicity Transitions with an Electrochemical Quartz Crystal Microbalance - M. Jeffrey (Monash University) and R. Woods (Griffith University) PDF

Flotation II

Co-Chairs: R.-H. Yoon and G.A. Hope

2:00973 Activation Energies for the Adsorption of Potassium Ethylxanthate on Sulfide Minerals from Tafel Studies - N.K. Mendiratta and R.-H. Yoon (Center for Coal and Minerals Processing) PDF
2:30974 Surface Enhanced Raman Scattering Spectroscopic Studies of the Adsorption of Flotation Collectors - G. Hope, R. Woods, and K. Watling (Griffith University) PDF
3:00 Thirty-Minute Intermission
3:30975 Effects of Diethylenetriamine and Sulfur Dioxide on Pyrrhotite Depression - N.K. Mendiratta, R.-H. Yoon (Center for Coal and Minerals Processing), and S.W. Wilson (J. Roy Gordon Research Laboratory) PDF
4:00976 Interaction of Collectors with Pre-Oxidised Sulfide Mineral Surfaces; Adsorption of Iso-Butyl Xanthate on Galena - A. Buckley, B. Gong, R. Lamb (The University of New South Wales), and R. Woods (Griffith University) PDF
4:30977 The Adsorption of Dicresyl Dithiophosphate onto Pyrite, I. A UV-Visible Spectroscopic Study of the Kinetics of Adsorption. - S. Grano, C. Prestidge, and J. Ralston (University of South Australia) GIF
5:00978 Electrochemistry of Copper Activation of Sphalerite and Xanthate Adsorption - Z. Chen (Center for Applied Energy Research) and R.-H. Yoon (Center for Coal and Minerals Processing) PDF
5:30979 Potential Control Flotation of Galena and Its Industrial Application - G. Guo, Y. Hu, G. Qiu (Central South University of Technology), and D. Wang (Beijing General Research Institute for Nonferrous Metals) PDF

Tuesday, May 16, 2000

Sulfide Oxidation and Gold Processing

Co-Chairs: G.H. Kelsall and F.M. Doyle

8:30980 Comparison of Oxidation Properties of Synthetic and Natural PbS (100) Surfaces - K. Laajalehto (University of Turku) and P. Nowak (Polish Academy of Sciences) PDF
9:00981 Electrokinetic Properties of Gold-Particles in the Presence of Several Electrolytes and of Amyl Xanthate - M.B.M. Monte, F.F. Lins (Centre for Mineral Technology - CETEM), and J.F. Oliveira (Federal University of Rio de Janeiro - UFRJ) GIF
9:30 Thirty-Minute Intermission
10:00982 Recovery of Gold from Pyrite. I. Chlorination of a Gold - Pyrite (FeS2) Bi-electrode - N. Welham and G. Kelsall (T.H.Huxley School) PDF
10:30983 Oxidation of Pyrite in Nitric Acid Solutions: Relation to Treatment of Refractory Gold Ores - J. Flatt (University of South Australia) and R. Woods (Griffith University) PDF
11:00984 Recovery of Gold from Pyrite. II. Reduction of Aqueous Chlorine on Pyrite (FeS2) - N. Welham and G. Kelsall (T.H.Huxley School) PDF
11:30985 Electrochemical Aspects of Gold Cyanidation - M. Jeffrey (Monash University) and I. Ritchie (AJ Parker CRC for Hydrometallurgy) PDF

Oxidation and Leaching of Minerals

Co-Chairs: I.M. Ritchie and M.B.M. Monte

2:00986 Hydrometallurgical Gold Recovery from Arsenopyrite Coal-schist Ores - G.L. Pashkov, Y.S. Kononov, A.G. Kholmogorov, and Z.P. Kuzina (Institute of Chemistry and Chemical Technology SB RAS) PDF
2:30987 Electrochemical Study of Gold Oxidation in Solutions Containing Thiosulfate, Ammonia and Copper - P. Breuer and M. Jeffrey (Monash University) PDF
3:00 Thirty-Minute Intermission
3:30988 Electrochemical Oxidation of Pyrite in Alkaline Electrolytes: An Investigation Employing Cyclic Voltammetry, in-situ Scanning Probe Microscopy and Ex-Situ X-ray Photoelectron Spectroscopy - P. Abraitis (The University of Manchester), N. Brandon (Imperial College), K. England (The University of Manchester), G. Kelsall (University of British Columbia), A. Lennie, R. Pattrick, D. Vaughan (The University of Manchester), and Q. Yin (Imperial College) PDF
4:00989 Some Aspects of the Electrochemistry of Chalcopyrite under Typical Leaching Conditions - I. Lazaro and M. Nicol (Murdoch University) PDF
4:30990 A Comparative Study of Electrochemical Behavior of Chalcopyrite, Chalcocyte and Bornite in Sulfuric Acidic Solution - G. Bahena (Instituto Politecnico Nacional-ESIQIE), I. Gonzalez (Universidad Autonoma Metropolitana-Iztapalapa), and E.M. A rce (Instituto Politecnico Nacional-ESIQIE) PDF
5:00991 Formation, Structure, and Reactions of Disordered Non-Stoichiometric Layer at Pyrrhotite - Y. Mikhlin, A. Kuklinskiy, Y. Tomashevich, G. Pashkov, V. Kargin, N. Pavlenko (Chemical Technology SB RAS), V. Varnek, I. Asanov, and A. Okotrub (Ins titute of Inorganic Chemistry SB RAS) PDF
5:30992 Galena and Sphalerite Dissolution Process in Acidic Chloride Media - I. Cisneros-Gonzalez, M. Oropeza-Guzman, and I. Gonzalez (Universidad Autonoma Metropolitana Iztapalapa) PDF

Wednesday, May 17, 2000


Co-Chairs: M.J. Nicol and Y. Mikhlin

10:00993 Potential-pH Diagrams for Copper in Aqueous Solutions of Various Organic Complexing Agents - S. Aksu and F.M. Doyle (University of California at Berkeley) PDF
10:30994 Cementation of Copper Ions by Nickel Metal - E. Ho (Intec Ltd) and I.R. Ritchie (Murdoch University) PDF
11:00995 Effect of Surface Non-Stoichiometry on the Dissolution of Metal Sulfides - Y. Mikhlin, Y. Tomashevich (Institute of Chemistry at Chemical Technology of SB RAS), I. Asanov, and A. Okotrub (Institute of Inorganic Chemistry of SB RAS) PDF
11:30996 Application of Titanium Mesh-on-Lead Technology to Metal Electrowinning Systems - K. Hardee and M. Moats (ELTECH Systems Corporation) PDF


Co-Chairs: S.L. Licht and R. Woods

2:00997 Modelling the Distribution of Potential, Concentrations and Current Densities in Zinc Electrowinning Cells - G. Kelsall and M. Li (University of British Columbia) PDF
2:30998 Copper Electrowinning: Modeling and Simulation - H. Aminian (Umex Inc.) and C. Bazin (Laval University) PDF
3:00 Thirty-Minute Intermission
3:30999 Modelling Local Current Efficiencies and Specific Electrical Energy Consumptions in Zinc Electrowinning Cells - G. Kelsall, E. Guerra, M. Li, and M. Bestetti (University of British Columbia) PDF
4:001000 Electrochemical Behavior of Thiourea and Its Decomposition in Copper Electrorefining - Z. Zheng and D. Dreisinger (The University of British Columbia) PDF
4:301001 Effects of Manganese(II) and Chloride Ions in Zinc Electrowinning Reactors - G. Kelsall, E. Guerra, M. Li, and M. Bestetti (University of British Columbia) GIF
5:001002 The Physical Properties of Nickel Electrodeposits - D. Kittelty and M. Nicol (Murdoch University) PDF