Hydrometallurgy ’94: Papers presented at the international symposium ‘Hydrometallurgy ’94’ organized by the Institution of Mining and Metallurgy and the Society of Chemical Industry, and held in Cambridge, England, from 11 to 15 July, 1994

Front Matter....Pages i-xxviii
Front Matter....Pages 1-1
EU R&D activity and strategy for sustainable development in the mineral industries....Pages 3-11
Hydrometallurgy—an environmentally sustainable technology?....Pages 13-26
Environmental impact of increasing production of gold from hydrothermal resources....Pages 27-42
 In-situ leaching recovery of copper: what’s next?....Pages 43-67
Hydrometallurgical processing of refinery slimes at Phelps Dodge: theory to practice....Pages 69-105
Materials production and the environment....Pages 107-121
Front Matter....Pages 123-123
Reaction of galena in ferric sulphate—sulphuric acid media....Pages 125-138
Multicomponent equilibrium calculations in process design: study of some acid digester reactors....Pages 139-157
Hematite solubility in sulphate process solutions....Pages 159-175
Hydrothermal precipitation from aqueous solutions containing iron(III), arsenate and sulphate....Pages 177-190
Front Matter....Pages 191-191
Heap leaching of poor nickel laterites by sulphuric acid at ambient temperature....Pages 193-208
Mechano-chemical treatment of tetrahedrite as a new non-polluting method of metals recovery....Pages 209-218
Non-traditional methods of treating high-silicon ores containing rare elements....Pages 219-228
Scope and limitations for application of selectivity in oxidation potential-controlled leaching of metal sulphides....Pages 229-252
Control of arsenic and selenium during nickel matte leaching....Pages 253-272
Electrochemical study of oxidative dissolution of synthetic violarite in aqueous media....Pages 273-287
Front Matter....Pages 289-289
Stability of arsenical bacterial oxidation products....Pages 291-311
Removal of iron from kaolin and quartz: dissolution with organic acids....Pages 313-323
Bioreduction of gold on algae and with amino acids....Pages 325-335
Metal speciation in bioleach solutions during bacterial dissolution of a complex mineral sulphide concentrate....Pages 337-350
Front Matter....Pages 289-289
Bacterial oxidation of an auriferous arsenical concentrate....Pages 351-359
Oxidation of arsenopyrite in bacterial ferric solutions....Pages 361-367
Effect of silver and bismuth on bioleaching of copper sulphide concentrates with thermophilic microorganisms....Pages 369-383
Dissolved iron equilibrium in bacterial leaching systems....Pages 385-393
Influence of substrate polarization on activity of Thiobacillus ferrooxidans in bioleaching....Pages 395-405
Front Matter....Pages 407-407
Pretreatment by electrolytic or oxidative leaching for recovery of gold and silver from refractory sulphide concentrates....Pages 409-423
Iodide—thiocyanate leaching system for gold....Pages 425-440
Leaching and recovery of gold by use of acido-thioureation on copper-mine wastes: laboratory and pilot-plant tests and process modelling....Pages 441-461
PRISMA—a hydrometallurgical process simulator: application in gold extraction from refractory pyrites....Pages 463-482
Interrelationship between lixiviants and galvanic interaction during dissolution of gold....Pages 483-499
Comparative performance of porous adsorbents in presence of gold cyanide, organic foulants and solid fines....Pages 501-515
Reductive sorption methods for extraction of noble metals from solution....Pages 517-526
Dissolution of gold in oxidized bromide solutions....Pages 527-540
Leaching of gold from sulphide concentrates with thiosulphate/polysulphide produced by disproportionation of elemental sulphur in ammoniacal media....Pages 541-546
Adsorption of gold-thiourea complex on Greek lignite....Pages 547-559
Front Matter....Pages 561-561
Norzink removal of cobalt from zinc sulphate electrolytes....Pages 563-577
Cementation of mercury(II) from chloroalkali effluents by use of Zn and Fe....Pages 579-590
Removal of antimony and bismuth from copper tankhouse electrolytes....Pages 591-600
Novel solvent extraction reagents for recovery of zinc from sulphate leach solutions....Pages 601-611
Recovery of acids and bases used in metal treatment processes by diffusion dialysis....Pages 613-626
Front Matter....Pages 561-561
Recommended separation processes for ion-absorbed rare earth minerals....Pages 627-634
Purification of waste waters containing heavy metals; by surfactant liquid membrane extraction....Pages 635-654
Electroassisted separation of metals by solvent extraction and supported-liquid membranes....Pages 655-673
Equilibrium and kinetic studies of copper extraction from chloride solutions with pyridine carboxylates....Pages 675-682
Cadmium removal from phosphoric acid—Israeli experience....Pages 683-699
Solvent extraction of rhodium with Kelex 100....Pages 701-707
Front Matter....Pages 709-709
Removal of free cyanide from solution with silver-impregnated activated carbon....Pages 711-723
Removal of heavy metal ions from liquid effluents by solvent-impregnated resins....Pages 725-739
Use of a fluidized-bed ion-exchange system for heavy metals removal from waste streams....Pages 741-753
Application of ultrafiltration assisted by complexation to treatment of industrial waste waters....Pages 755-765
Application of Strong Magnetic Fields For Heavy Metal Removal....Pages 767-775
Design And Construction Aspects Of Pilot-Scale Passive Treatment Systems For Acid Rock Drainage At Metal Mines....Pages 777-793
Wheal Jane—can wetlands technology cope?....Pages 795-806
Retention of cadmium in clay minerals by a hydrothermal method....Pages 807-813
Use of Zeolitic Tuff For Control and Recycling of Effluent....Pages 815-824
NO x suppression with hydrogen peroxide in the metals industry....Pages 825-836
Application of Fibrous Ion Exchangers in Air Purification From Acidic Impurities....Pages 837-855
Front Matter....Pages 857-857
Hydrometallurgical processing of complex copper-zinc concentrates....Pages 859-867
Integration of Sherritt Zinc Pressure Leach Process at Ruhr-Zink refinery, Germany....Pages 869-885
Recovery of platinum group metals from oxide ores—TML Process....Pages 887-912
Front Matter....Pages 857-857
Development of Intec Copper Process by an international consortium....Pages 913-922
Introduction to spray roasting process for hydrochloric acid regeneration and its application to mineral processing....Pages 923-937
Production of high-grade tin in a new electrolytic plant....Pages 939-946
Front Matter....Pages 947-947
Towards zero-discharge mining: minimization of water outflow....Pages 949-960
Design of a tailing facility to mitigate potential acid rock drainage....Pages 961-969
Exploitation of shear and compression rheology in disposal of bauxite residue....Pages 971-982
Leaching of heavy metals from contaminated concrete rubbish material....Pages 983-992
Processing of electric arc furnace dust via chloride hydrometallurgy....Pages 993-1010
Prediction of water contamination arising from disposal of solid wastes....Pages 1011-1024
Improved process for concentration of ulexite and boric acid production....Pages 1025-1034
Decontamination of site of a secondary zinc smelter in Torrance,California....Pages 1035-1048
Disposal of Inorganic Wastes From Sulphate Titanium Dioxide Process at Langöya, Norway....Pages 1049-1058
Effluent treatment in IMI Phosphoric Acid Process....Pages 1059-1071
Front Matter....Pages 1073-1073
Metals Recovery From Hydrodesulphurization Catalysts....Pages 1075-1086
Environmentally sound hydrometallurgical recovery of chemicals from aluminium industry spent potlining....Pages 1087-1103
Recovery of vanadium from spent catalysts and alumina residues....Pages 1105-1121
Ecological treatment of waste products from zinc hydrometallurgy....Pages 1123-1151
Production of indium from Imperial Smelting Process residues....Pages 1153-1164
Back Matter....Pages 1165-1171