VOLUME CONTENTS Volume 7, Number 1 January 1994 M.A. Reuter and The simulation and identification of metallurgical D. Bernhard kinetic processes using a generalised kinetic rate equation and trained neural nets . Desbiens, D. Hodouin, Long-range predictive control of a rougher flotation . Najim and F. Flament unit E. Kusaka, Y. Arimoto, Collectorless liquid-liquid extraction of fine mineral Y. Nakahiro and particles using various organic liquids as the oil phase T. Wakamatsu C. Abbruzzese, Preparatory bioleaching to the conventional S. Ubaldini, F. Veglio cyanidation of arsenical gold ores and L. Toro B. V. Mihaylov and Biological decomposition of cyanide in sewage J. L. Hendrix sludge J. S. J. van Deventer and Factors affecting the elution of gold cyanide from P. F. van der Merwe activated carbon J. A. Gonzalez-Dominguez A review of lead and zinc electrodeposition control by polarization techniques Technical Notes W. W. Fisher Comparison of chalcocite dissolution in the sulfate, perchlorate, nitrate, chloride, ammonia, and cyanide systems J. Valenzuela, M. Bourassa, Dynamic matrix control of an autogenous grinding K. Najim and R. del Villar circuit Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Reports Recent Mineral Processing Publications Information for Contributors iv Volume Contents Volume 7, Number 2/3 February/March 1994 SPECIAL ISSUE MINERALS ENGINEERING ‘93 Proceedings of the International Conference held at the Cape Sun Hotel, Cape Town, South Africa 25-27 August 1993 B. A. Wills and 125 Minerals Engineering ‘93—Opening Remarks Cc. T. O’Connor R. P. King 129 Comminution and liberation of minerals G. Johnson, |. Hunter 141 Quantifying and improving the power efficiency of and H. Holle SAG milling circuits L. Elber, D. Thomson and 153 Development of a control system for a SAG-B-C G. Johnson grinding circuit M.S. Powell and 169 The influence of liner design on the rate of production L. A. Vermeulen of fines in a rotary mill D. Yan and R. Eaton 185 Breakage properties of ore blends B. Knelson and R. Jones 201 “A new generation of Knelson concentrators’: a totally secure system goes on line . B. He and J. S. Laskowski 209 Effect of dense medium properties on the separation performance of a dense medium cyclone . K. Loveday and 223 Fluid flow modelling on spiral concentrators . J. Cilliers . M. Laukkanen and 239 Application of eMAX image analysis to pressure . O. Leppinen oxidation of refractory gold ores . T. E. Boshoff 251 Cyanide-free AARL elutions are feasible . S. J. van Deventer, 265 The fundamentals of unit operations in CIP plants: a . Lorenzen, progress report . F. van der Merwe, . W. Morrison and . P. W. van der Westhuysen M. A. Reuter, J. Kruger, Direct reduction during the production of ferro- Y. D Ong and T. Yang niobium in an electric furnace A. D. Bailey and Oxygen mass transfer limitation of batch bio- G. S. Hansford oxidation at high solids concentration J. D. Miller and Fundamental aspects of soluble salt flotation M.R. Yalamanchili Volume Contents v G. J. Harbort, B. R. Jackson Recent advances in Jameson flotation cell technology and E. V. Manlapig J. B. Yianatos, L. G. Bergh, Measurement of residence time distribution of the gas O. U. Duran, F. J. Diaz and phase in flotation columns N. M. Heresi L. G. Bergh and Experimental studies on flotation column dynamics J. B. Yianatos P. R. Visser, M. L. Coetzee Flotation of autogenously milled material and S. G. Kendall J. G. Park and D. S. Dodd The Merelani graphite proj—e Tacnztani a J. W. Neale and A. Pinches Determination of gas—liquid mass-transfer and solids- suspension parameters in mechanically-agitated three-phase slurry reactors Technical Note B. Patchejieff, Opportunities for fine gold recovery from a copper St. Gaidarjiev and D. Lazarov flotation circuit using a Knelson concentrator Minerals Engineering ‘93 Registered Delegates Faces at Minerals Engineering ‘93 Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Reports Book Reviews Zhenghe Xu Mineral Processing Technology (5th Edition), by B.A. Wills J. Abbott Advanced Coal Preparation Monograph Series, Vol- ume VII, Part 16, Control Concepts, by C. J. Clarkson Recent Mineral Processing Publications Call for Papers Information for Contributors Volume 7, Number 4 April 1994 G. Deschénes, D. Bernard, A preliminary techno-economic evaluation of the P. J. H. Prud’‘homme extraction of gold from a chalcopyrite concentrate and D. Laforest using thiourea Qingxia Liu and Fine particle processing by magnetic carrier methods F. J. Friedlaender Volume Contents P. Diaz-Penafiel and Kinetic studies in flotation columns: bubble size effect G. S. Dobby A . M. E. Rizk, Examination of single and repetitive impact breakage H. A. A. El-Sageer and M. A. Doheim Technical Notes M. Falutsu Measurement of the degree of liberation of a mineral Yigen Zeng and E. Forssberg Monitoring grinding parameters by vibration signal measurement—a primary application D. Lazarov, L. Alexandrova Effect of temperature on the kinetics of froth flotation and |. Nishkov R. C. Carson and J. Simandl Kinetics of magnesium hydroxide precipitation from seawater using slaked dolomite Calendar of International Conferences, Symposia, Courses and Meetings of Interest Book Reviews R. P. Edwards Mineralization in the British Isles, edited by R. A. D. Patrick and D. A. Polya A. Butcher Quantitative Data File for Ore Minerals, edited by A. J. Criddle and C. J. Stanley Recent Mineral Processing Publications Final Call for Papers New Patents Information for Contributors Volume 7, Number 5/6 May/June 1994 SPECIAL ISSUE MINERALS ENGINEERING ‘93 Proceedings of the International Conference held at the Cape Sun Hotel, Cape Town, South Africa 25-27 August 1993 J. J. Cilliers, L. G. Austin, 533 A method of investigating rod motion in a laboratory P. Leger and A. Deneys rod mill M. A. Tuziin and 551 Fine milling of chromite sand in a 5-litre stirred ball B. K. Loveday mill Volume Contents R. A. Williams, Design targeting of hydrocyclone networks I. L. Albarran de Garcia Colon, M. S. Lee and E. J. Roldan Villasana V. G. Beniuk, C. A. Vadeikis Centrifugal jigging of gravity concentrate and tailing and J. N. Enraght-Moony at Renison Limited G. Banini and W. Stange Modelling of the AARL elution process E. Vardar, R. H. Eric Acid leaching of chromite and F. K. Letowski D. A. Holtum and Bacterial heap leaching of refractory gold/sulphide D. M. Murray ores G. Akdogan and R. H. Eric Carbothermic reduction behaviour of Wessel man- ganese ores R. D. Pascoe and B. A. Wills Selective aggregation of ultrafine hematite and quartz under high shear conditions with conventional flotation collectors D. Hewitt, D. Fornasiero Bubble particle attachment efficiency and J. Ralston J. P. Tucker, D. A. Deglon, 667 An evaluation of a direct method of bubble size J.-P. Franzidis, M. C. Harris distribution measurement in a_ laboratory batch and C. T. O’Connor flotation cell D. J. Bradshaw and The flotation of pyrite using mixtures of dithio- C. T. O’Connor carbamates and other thiol collectors G. Hodgkinson, Pyrite flotation from gold leach residues R. F. Sandenbergh, C. J. Hunter and J. R. de Wet M. C. Harris, J.-P. Franzidis, An on-site evaluation of different flotation technol- A. W. Breed and ogies for fine coal beneficiation D. A. Deglon J. Ralston The chemistry of galena flotation: principles and practice J. H. P. Watson Status of superconducting magnetic separation in the minerals industry J. Svoboda The effect of magnetic field strength on the efficiency of magnetic separation Zhengnan Li and A study of vortex magnetic separation (VMS) with a J. H. P. Watson high-speed video system viii Volume Contents J. H. P. Watson Selectivity and mechanical retention in the magnetic separation of polydisperse, mixed mineral particle systems—Part 1 C. Aldrich, The application of neural nets in the metallurgical J. S. J. van Deventer industry and M. A. Reuter G. Coetzer, S. J. Foster Use of surface area and porosity to characterise the and P. J. Harris chemical upgrading of ilmenite Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Report Book Review N. J. Miles Advanced Coal Preparation Monograph Series by C. J. Clarkson, J. C. Donnelly and A. G. Waters Proceedings of the Sixth Australian Coal Preparation Conference edited by J. J. Davis Recent Mineral Processing Publications Information for Contributors Volume 7, Number 7 ; July 1994 C. T. O’Connor The flotation of gold bearing ores—a review and R. C. Dunne > W. T. Yen, S. Jin, Comparison of elution methods for carbon loaded G. Deschenes with gold thiourea complex and J. McMullen R. K. Mensah-Biney, Kinetics of gold loading from bromide solution onto K. J. Reid an anion exchange resin and M. T. Hepworth G. Newcombe and J. Ralston Bubble spreading kinetics and mineral flotation C. Kant, S. R. Rao Distribution of surface metal ions among the products and J. A. Finch of chalcopyrite flotation P. R. G. Brandao, Vegetable lipid oil-based collectors in the flotation of L. G. Caires apatite ores and D. S. B. Queiroz Technical Notes L. Zhang Electrochemical equilibrium diagrams for sulphid- ization of oxide copper minerals P. P. Borges Solvent extraction of gallium with Kelex 100 from and I. O. C. Masson Brazilian weak sodium aluminate solution Volume Contents ix P. Bevilacqua and G. Ferrara 943 Carry-over of water and suspension of fines by coarser particulate solids—its influence on the design of DMS regeneration circuits Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Report Book Review A Hyper-Manual on Expert Systems v.2.0, by J. A. Meech and S. Kumar Recent Mineral Processing Publications Information for Contributors Volume 7, Numbers 8 August 1994 SPECIAL ISSUE ENVIRONMENTAL ASPECTS OF MINERALS ENGINEERING Proceedings of the International Symposium held at the Cape Sun Hotel, Cape Town, South Africa 27 August 1993 B. A. Wills 965 International Symposium on Environmental Aspects of Minerals Engineering: opening remarks K. Atkinson 967 The role of mineral processing in reducing the environmental impact of mining activity in Cornwall, U.K. R. J. Wilson, T. J. Veasey 975 The application of mineral processing techniques for and D. M. Squires the recovery of metal from post-consumer wastes S. M. Hay and W. J. Rankin 985 Recovery of iron and zinc from blast furnace and basic oxygen furnace dusts: a thermodynamic evaluation J. Cordery, A. J. Wills, 1003 Extraction and recovery of silver from low-grade K. Atkinson and B. A. Wills liquors using microalgae J. H. P. Watson 1017 Biomagnetic separation and extraction process for and D. C. Ellwood heavy metals from solution J. L. Broadhurst 1029 Neutralisation of arsenic bearing Biox® liquors G. Moffat, R. A. Williams, 1039 Selective separations in environmental and industrial C. Webb and R. Stirling processes using magnetic carrier technology Volume Contents x G. J. Brown, N. J. Miles Fractal assessment of finely ground limestone for flue and S. T. Hall gas desulphurisation Calendar of International Conferences, Symposia, Courses and Meetings of Interest Recent Mineral Processing Publications Information for Contributors September 1994 Volume 7, Number 9 Z. A. Zhou, Zhenghe Xu On the role of cavitation in particle collection during and J. A. Finch flotation—a critical review Ta-Wui Cheng, The surface properties and flotation behaviour of A. C. Partridge, Tam Tran xenotime and P. L. M. Wong S. Banisi, J. A. Finch On-line gas and solids holdup estimation in solid— and A. R. Laplante liquid—gas systems Z. Aktas and The adsorption behaviour of nonionic reagents on two E. T. Woodburn low rank British coals M. Agus, G. Bonifazi Image texture analysis based procedure to character- and P. Massacci ise and recognise coal macerals D. W. Moolman, Digital image processing as a tool for on-line monitor- C. Aldrich, ing of froth in flotation plants J. S. J. van Deventer and W. W. Stange M. D. Adams Removal of cyanide from solution using activated carbon S. Makni and D. Hodouin Recursive BILMAT algorithm: an on-line extension of data reconciliation techniques for steady-state bilinear material balance Technical Note N. A. Abdel-Khalek, Beneficiation of Egyptian feldspar for application in A. Yehia and S. S. Ibrahim the glass and ceramics industries Calendar of International Conferences, Symposia. Courses and Meetings of Interest Conference Reports Announcements Book Review A Textbook of Hydrometallurgy, by Fathi Habashi Conference Proceedings The Impact of Mining on the Environment, edited by A. G. Paithankar et al. Volume Contents 1211 Recent Mineral Processing Publications Information for Contributors Volume 7, Number 10 October 1994 S. R. La Brooy, Review of gold extraction from ores H. G. Linge and G. S. Walker C. Bazin, R. Grant, A method to predict metallurgical performances as a M. Cooper and R. Tessier function of fineness of grind T. E. Norgate and Selection and operation of high pressure grinding rolls K. R. Weller Circuits for minimum energy consumption K. P. Galvin and Use of X-rays to determine the distribution of particles J. B. Smitham in an operating cyclone P. Tucker Modelling wet high intensity magnetic separation: a case study M. T. A. Reis and Recovery of heavy metals by a combination of J. M. R. Carvalho two processes: cementation and liquid membrane permeation G. Puvvada and T. Tran The cementation of Ag(l) ions from aqueous sodium chloride solutions Technical Note C. V. Phillips, K. Ayling, Aqueous methods used to determine copper(|) and E. Crowther, M. E. Harrison iron(|I|) concentrations in the presence of copper(|), and M. A. Jordan copper(Il), iron(Il), iron(ill) and zinc(II) in chloride leach solutions by visible spectrophotometry Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Reports Call for Papers Recent Mineral Processing Publications Information for Contributors Volume 7, Number 11 November 1994 E. W. Giesekke The role of polyoxyethylene alkyl ethers in apatite and P. J. Harris flotation at Foskor, Phalaborwa (South Africa) Jing-Wu Wang Numerical simulations of liquid flow on_ spiral and J. R. G. Andrews concentrators xii Volume Contents A. E. Elsherief 1387 Influence of galvanic interactions between chalcocite and sphalerite during the early stage of leaching A. Marciano, 1401 Utilization of coal—oil agglomerates to recover gold L. S. N. Costa and F. F. Lins particles R. J. Wakeman 1411 A framework methodology for the simulation and and E. S. Tarleton sizing of diaphragm filter presses Technical Notes C. Dufresne, Control of cyanidation at Yvan Vézina plant G. Deschénes, D. Cimon and J. Corrigan A. E. C. Peres, The effect of the dispersion degree on the flotability of A. A. M. Borges an oxidised zinc ore and R. Galery B. Govindarajan A simple equation for sink—float data and T. C. Rao Calendar of International Conferences, Symposia, Courses and Meetings of Interest Conference Reports Conference Proceedings Call for Papers Recent Mineral Processing Publications Information for Contributors Volume 7, Number 12 December 1994 R. K. Tuteja, Mathematical models of the column flotation process. D. J. Spottiswood A review and V. N. Misra G. Schena and A. Casali Column _ flotation circuits in Chilean copper concentrators M. Falutsu Direct measurement of gas rate in a flotation machine X. P. Zheng and H. K. Lin Mineralogy and flotation of rare-earth-bearing barium fluorophlogopite J. A. Jirestig and Dispersion of flotation concentrates before magnetic K. S. . Forssberg separation M. G. Cordingley, Release analysis and its use in the optimisation of the M. P. Hallewell comminution and gravity circuits at the Wheal Jane and J. W. G. Turner tin concentrator