BASE METALS 2009
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Fifth Southern African Base Metals Conference

Kasane, Botswana, 27-31 July 2009

Provisional Technical Programme

Please note that this provisional programme is still subject to changes.

Keynote speaker:
W. de Klerk, Exxaro for Base Metals in Sub-Sahara Africa

Keynote Speaker: Necessity, the mother of invention, a reflection on the requirements for successful innovation in the metallurgical Industries
R. Whyte, Metallurgical Consultant

Purification of zirconium metal to nuclear grade purity by vacuum sublimation
W.G. Augustyn*, J.B. Wagener*, J.T. Nel*, D. Hudson-Lamb*, and R.I. McCrindle+, +NECSA and +Tshwane University of Technology

Enhancing mill feed grade control with mining automation at Skorpion Zinc Mine
M. Button and T. Jordaan, Anglo American

Evaluation of different reagents for the removal of Zn from advance cobalt electrolyte
N. Cola*, A.C. du Preez*, M.H. Kotze*, and B. van Hege+, *Mintek and +Bateman

Practical geometallurgy at the exploration-to-project transition
D. David, GRD Minproc

Pre-concentration of low grade lateritic sulphide nickel ore
D.F. Denysschen, N. Wagner, Multotec

Laboratory and pilot-plant investigations into the performance of a synergistic versatic 10 acid solvent extraction system for the recovery of nickel from calcium saturated streams
A.C. du Preez and M.H. Kotze, Mintek

Water reduction at Skorpion Zinc and the impact on the environment
H.F. Fuls, J. Kruger, and P. van Greunen, Namzinc

Extending the application of the AMIRA P754 Code of Practice for Metal Accounting
P.G. Gaylard*, R.D. Morrison+, N.G. RandolphØ, C.M.G. Wortley**, R.D. Beck# *University of Cape Town, +JKMRC, University of Queensland, ØNSR Investments cc, **Consulting Engineer, #AMIRA International

Milestones in the improvement of Ni-Cu recoveries at BCL
M. Gumbie, S. Tawanana, M. Moroka, M. Bogopa, and G. Dzinomwa, BCL Limited, Botswana

An update on the application of molecular recognition technology (MRT) for Ni/Cu/Co hydrometallurgical process separations, and for the purification of cobalt streams
S.R. Izatt, R.L. Bruening, N.E. Izatt, J.B. Dale, IBC Advanced Technologies, Inc

Modernisation of the BCL smelter
A.C Legg, L. Ntsipe, M. Bogopa, G. Dzinomwa, BCL Limited, Botswana

Dissolution of six sulphide concentrates in the hydrocopperr environment
M. Lundstr”m*, J. Liipo+, J, Karonen+, and J. AromaaØ, *Outotec Oyj, Base Metals, +Outotec Research Oy, ØHelsinki University of Technology

The application of rockfall mitigation measures to both improve safety and reduce costs in opencast mining
L.M.J. Melis* and G. Matthews+, *Melis & Du Plessis Consulting Engineers and +Maccaferri SA

Impact of plant upgrade and DMS on processing capability Tati nickel-a case study
P. Morgan, DRA Mineral Projects

Soluble metal recovery improvement using high density thickeners in a CCD Circuit: Ruashi II a case study
M.C. Mulligan* and L. Bradford+, *FLSmidth and +Metorex

Skorpion Zinc solvent extraction: the upset conditions
J.M. Musadaidzwa and E.I. Tshiningayamwe Namzinc

Novel design aspects of the Tati Activoxr Project ammonia recovery circuit
G.J. Nel* and D.A. van den Berg+, *Norilsk Nickel and +Hatch

Milling technology selection for the Tati Activoxr Project base on pilot scale ultrafine milling test work on nickel sulphide concentrates
G.J. Nel, Norilsk Nickel

Flowsheet considerations for copper cobalt projects
A. Nisbett*, K. Baxter+, K. MarteØ, and M. Urbani**, +Cognis Corporation, USA, *Bateman Engineering, ØBateman Engineering Canada Corporation, Canada, **Western Minerals Technology, Australia

Novel second stage leach autoclave for improved base metal recovery
J.O. Roux*, M. Du Toit+, and D. ShklazØ, *Impala Platinum, +University of Pretoria, and ØEngineering Systems

Mineralogical characterization of the refractory copper ore from Nchanga open pit mine, Zambia
O.N. Sikazwe*, A. Hagni+, and R. Hagni+, *University of Zambia and + Missouri University of Science and Technology

Mineral endowments and developing economies
L.C. Stilwell, Read, Swatman & Voigt

BCL sulphur capture options
M. Stroud, M. Bogopa, D.C. Keitshokile, and G. Dzinomwa, BCL Limited, Botswana

A comparison of the parameters influencing base metals electrowinning
M. van Rooyen*, K. Gottliebsen*, D.J. Robinson+, and R. FraserØ, *Hatch, South Africa, +Hatch, USA, and ØHatch, Australia

Maximizing the value derived from laboratory test work towards heap leaching design
P.J. van Staden, S.W. Robertson, M. Gericke, J.W. Neale, and A. Seyedbagheri, Mintek

Pilot-plant study of sulphuric acid extraction from a nickel electrolyte using Alamine 308
K. Voogt*, K.C. Sole*, and L.J. Bryson+, *Anglo Research and +Anglo Platinum

Milling circuit selection for Nkomati 375 ktpm concentrator
E. Wolmarans and P. Morgan, DRA Mineral Projects

Evaluation of various durability tests for resin-in-pulp grade resins
V. Yahorava*, J. Scheepers, and M.H. Kotze*, and D. Auerswald+, *Mintek and +Bateman Engineering

Reconfiguring the Nchanga flotation circuits for improved metallurgical performance
H. Zimba, V. Gundala, and M. Ng'andwe, Konkola Copper Mines Plc