Hydrometallurgy

Hydrometallurgy '94 contains the 78 papers that were presented at the international symposium organized by the Institution of Mining and Metallurgy and the Society of Chemical Industry and held in Cambridge, England, in July 1994. In the papers specific attention is paid to the concept of sustainable development and the associated ideas of cleaner technology, recycling and waste minimization that have particular relevance to the extraction and processing of metals and other mineral products. The papers, by authors from 30 contries, are grouped under the headings: Hydrometallurgy and Sustainable Development; Materials Production and the Environment; Fundamentals; Leaching; Bioprocessing; Gold Solution Purification; Effluent Treatment; Processes; and Recycling.

Table of Contents:
Organizing committee and list of sponsors. Foreword. List of contributors. Hydrometallurgy and Sustainable Development: EU R&D activity and strategy for sustainable development in the mineral industries; A. Adjemian. Hydrometallurgy - an environmentally sustainable technology? M.T. Anthony, D. S. Flett. Environmental impact of increasing production of gold from hydrothermal resources; A.K. Haines. In-situ leaching recovery of copper: what's next? J.B. Hiskey. Hydrometallurgical processing of refinery slimes at Phelps Dodge: theory to practice; J.E. Hoffmann, B. Wesstrom. Materials production and the environment; R.C. Villas Boas. Fundamentals: Reaction of galena in ferric sulphate-sulphuric acid media; J.E. Dutrizac, T.T. Chen. Multicomponent equilibrium calculations in process design: study of some acid digester reactors; P. Koukkari, H. Sippola, A. Sundquist. Hematite solubility in sulphate process solutions; V.G. Papangelakis, B.C. Blakey, H. Liao. Hydrothermal precipitation from aqueous solutions containing iron(III), arsenate and sulphate; P.M. Swash, A.J. Monhemius. Leaching: Heap leaching of poor nickel laterites by sulphuric acid at ambient temperature; S. Agatzini-Leonardou, D. Dimaki. Mechano-chemical treatment of tetrahedrite as a new non-polluting method of metals recovery; P. Balaz, et al. Non-traditional methods of treating high-silicon ores containing rare elements; S.V. Chizhevskaya, et al. Scope and limitations for application of selectivity in oxidation potential-controlled leaching of metal sulphides; N.L. Piret, J.F. Castle. Control of arsenic and selenium during nickel matte leaching; J.J. Robinson, K. Barbetti, R.P. Das. Electrochemical study of oxidative dissolution of synthetic violarite in aqueous media; T.E. Wamer, N.M. Rice, N. Taylor. Bioprocessing: Stability of arsenical bacterial oxidation products; K. Adam, et al. Removal of iron from kaolin and quartz: dissolution with organic adds; C.F. Bonney. Bioreduction of gold on algae and with amtino acids; A.R. Gee, A.W.L. Dudeney. Metal speciation in bioleach solutions during bacterial dissolution of a complex mineral sulphide concentrate; M.A. Jordan, C.V. Phillips, D.W. Barr. Bacterial oxidation of an auriferous arsenical concentrate; C. Komnitsas, F.D. Pooley. Oxidation of arsenopyrite in bacterial ferric solutions; C. Komnitsas, F.D. Pooley. Effect of silver and bismuth on bioleaching of copper sulphide concentrates with thermophilic microorganisms; J.L. Mier, et al. Dissolved iron equilibrium in bacterial leaching systems; J.V. Wiertz, I. Godoy Rios, B. Escobar Miguel. Influence of substrate polarization on activity of Thiobacillus ferrooxidans in bioleaching; J.V. Wiertz, et al. Gold: Pretreatment by electrolytic or oxidative leaching for recovery of gold and silver from refractory sulphide concentrates; L.M. Abrantes, M.C. Costa, A.P. Paiva. Iodide-thiocynate leaching system for gold; O. Barbosa-Filho, A.J. Monhemius. Leaching and recovery of gold by use of acidothioureation on copper-mine wastes: laboratory and pilot-plant tests and process modelling; P.F. Kavanagh, et al. PRISMA - a hydrometallurgical process simulator: application in gold extraction from refractory pyrites; A. Kontopoulos, et al. Interrelationship between lixiviants and galvanic interaction during dissolution of gold; L. Lorenzen, J.S.J. van Deventer, M.T. van Meersbergen. Comparative performance of porous adsorbents in presence of gold cyanide, organic foulants and solid fines; F.W. Petersen, J. S.J. van Deventer. Reductive sorption methods for extraction of noble metals from solution; Yu.A. Tarasenko, et al. Dissolution of gold in oxidized bromide solutions; R.B.E. Trindade, P.C.P. Rocha, J.P. Barbosa. Leaching of gold from sulphide concentrates with thiosulphate/polysulphide produced by disproportionation of elemental sulphur in ammoniacal media; Zhu Guocai, Fang Zhaoheng, Chen Jiayong. Adsorption of gold-thiourea complex on Greek lignite; A.I. Zouboulis, K.A. Kydros, K.A. Matis. Solution Purification: Norzink removal of cobalt from zinc sulphate electrolytes; K. Borve, T. Ostvold. Cementation of mercury(II) from chloroalkali effluents by use of Zn and Fe; J.M.R. de Carvalho, A. Anacleto. Removal of antimony and bismuth from copper tankhouse electrolytes; D.C. Cupertino, et al. Novel solvent extraction reagents for recovery of zinc from sulphate leach solutions; R.F. Dalton, P.M. Quan. Recovery of acids and bases used in metal treatment processes by diffusion dialysis; G.P. Herz, C. Byszewski, M. Jaffari. Recommended separation processes for ion-absorbed rare earth minerals; Li Deqian, et al. Purification of waste waters containing heavy metals by surfactant liquid membrane extraction; M. Samar, et al. Electroassisted separation of metals by solvent extraction and supported-liquid membranes; D.J. Schiffrin, et al. Equilibrium and kinetic studies of copper extraction from chloride solutions with pyridine carboxylates; J. Szymanowski, et al. Cadmium removal from phosphoric acid - Israeli experience; S.D. Ukeles, E. Ben-Yoseph, N.P. Finkelstein. Solvent extraction of rhodium with Kelex 100 ; C.L. Yan, J. Alstad. Effluent Treatment: Removal of free cyanide from solution with silver-impregnated activated carbon; Y. Choi, H.T. Lieuw, G. Van Weert. Removal of heavy metal ions from liquid effluents by solvent-impregnated resins; J.L. Cortina, et al. Use of a fluidized-bed ion-exchange system for heavy metals removal from waste streams; P. Cosmen, M.L. Ruiz. Application of ultrafiltration assisted by complexation to treatment of industrial waste waters; G. Durand, M. Rakib, I. Michelet. Application of strong magnetic fields for heavy metal removal; M. Franzreb, et al. Design and construction aspects of pilot-scale passive treatment systems for acid rock drainage at metal mines J.J. Gusek, J.T. Gormley, J.W. Scheetz. Wheal Jane - can wetlands technology cope? R.M. Hamilton, N.A. Postlethwaite, S.A. Foster. Retention of cadmium in clay minerals by a hydrothermal method; Ke Jia-Jun. Use of zeolitic tuff for control and recycling of effluent; P.J. Leggo. NOx suppression with hydrogen peroxide in the metals industry; C.F. McDonogh. Application of fibrous ion exchangers in air purification from acidic impurities; V.S. Soldatov, I.S. Elinson, A.A. Shunkevich. Processes: Hydrometallurgical processing of complex copper-zinc concentrates; B.S. Boyanov, R.I. Dimitrov. Integration of Sherritt Zinc Pressure Leach Process at Ruhr-Zink refinery, Germany; M.J Collins, et al. Recovery of platinum group metals from oxide ores - TML Process; S. Duyvesteyn, Houyuan Liu, W P.C. Duyvesteyn. Development of Intec Copper Process by an international consortium; P.K. Everett. Introduction to spray roasting process for hydrochloric acid regeneration and its application to mineral processing; L.J.F. Harris. Production of high-grade tin in a new electrolytic plant; JI.F. Rodriguez, et al. Waste Disposal: Towards zero-discharge mining: minimization of water outflow; S.A. Cale. Design of a tailing facility to mitigate potential acid rock drainage; D.R. East, et al. Exploitation of shear and compression rheology in disposal of bauxite residue; M.D. Green, N.J. de Guingand, D.V. Boger. Leaching of heavy metals from contaminated concrete rubbish material; W.H. Holl. Processing of electric arc furnace dust via chloride hydrometallurgy; R.O. McElroy, M. McCIaren. Prediction of water contamination arising from disposal of solid wastes; P.B. Mitchell, C. P. Waller, K. Atkinson. Improved process for concentration of ulexite and boric acid production; R.E. Pocovi, A.A. Latre, O.A. Skaf. Decontamination of site of a secondary zinc smelter in Torrance, California; E.C. Roche, J. Doyle, C.J. Haigh. Disposal of inorganic wastes from sulphate titanium dioxide process at Langoya, Norway; K.L. Sandvik, T. Sverreson. Effluent treatment in IMI Phosphoric Acid Process; S.D. Ukeles, et al. Recycling: Metals recovery from hydrodesulphurization catalysts; F. Delmas, et al. Environmentally sound hydrometallurgical recovery of chemicals from aluminium industry spent potlining; R.J Grolman, F.M. Kimmerle, C.C. Holywell. Recovery of vanadium from spent catalysts and alumina residues; E.M. Ho, et al. Ecological treatment of waste products from zinc hydrometallurgy; D. Juan, A. Perales. Production of indium from Imperial Smelting Process residues; B. Nikov, P. Stojanov, T. Stojadinovic. Subject index.