Copper Cobalt Africa 2015

6–8 July 2015
Zambezi Sun Hotel, Victoria Falls Livingstone, Zambia



Copper Mining in Zambia – History and Future
Jackson Sikamo, Alex Mwanza and Cade Mweemba

The Proposed 2016 SAMREC Code
Steven Rupprecht

Risk Evaluation and Mitigation Measures for Slope Management at Chingola Open Pit D&F, Zambia
C. Silwamba and P. R. K. Chileshe

Safe and Efficient Dump Body Removal and Installation by Means of the KIMBO Dump Body Exchange System
María Alejandra Giménez and Nils Schwarz

Needs Analysis for Capacity Building of Artisanal Miners in Central Africa
Steven M. Rupprecht

Development of a Metallurgical Model for a Copper Concentrator
Michael Valenta and Barbara Mulcahy

A Comparison of Test Procedures for Estimating the Bond Ball Work Index on Zambian/DRC Copper–Cobalt Ores and Evaluation of Suitability for Use in Geometallurgical Studies
Elizma Ford and Vincent Sithole

Review, Evolution and Optimization of the Kansanshi Mixed Copper Ore Treatment
C. Ngulube, C. Chongo and F. X. Paquot

Investigating Entrainment Levels in Lumwana and Kansanshi Ores using the Froth Stability and Water Recovery Methods
S. Sondashi, L. K. Witika and J. H. Masinja

Stabilisation of the Nickel Sulphide Concentrate Volumetric Flow Rate and Implementation of Mass Pull Control Strategy at Nkomati Mine
Ike Madingoana, Antoine F. Mulaba-Bafubiandi and Stephan van Zyl

Improving Thickener Performance Using the Radflow™ Feedwell: From CFD Modelling to Commercial Implementation
Alex Krassnokutksi

Flotation cPlant: an Optimum Modular Approach
Pekka Tähkiö and Luis Rudolphy

Xanthate Chemisorption at Copper and Chalcopyrite Surfaces
Jesse L. Bowden and Courtney A. Young

The Huntsman Approach to Flotation Frothers
Nobuzwe Makhotla, Steve Hearn and Sasha Boskovic

Effects of a Thio Collector Mixture for Optimising Recovery of a Low-Grade Carbonatite Copper Ore using Senfroth 38 Frother
T. J. Olaniyi, A. P. I. Popoola and A. A. Adeleke

Dewatering Tailings: Rapid Water Recovery by Means of Centrifuges
Robert Klug and Nils Schwarz

Optimisation of Circuits for Pressure Leaching of Sulfide Ores and Concentrates
Fadeela Saloojee and Frank K. Crundwell

A Comparison of Hydrometallurgical Routes for Treating Copper Sulfide Concentrates
Fadeela Saloojee, Frank K. Crundwell, Tebogo Thobejane, and Nicholas B. Du Preez

Leaching of Copper Sulphides
Marc Nicolle, Marko Lampi, Kari Valkama, and Janne Karonen

The Application and Economics of Industrial Alkaline Leaching of Copper Enargite Concentrates
C. G. Anderson

AmmLeach® A New Paradigm in Copper–Cobalt Processing
Nicholas J. Welham, Garry M. Johnston and Matthew L. Sutcliffe

Study of the Dissolution of Chalcopyrite in Solutions of Different Ammonium Salts
Thandazile Moyo and Jochen Petersen

Reductive Dissolution of Cu and Co from an Oxide Ore from DRC in H2SO4 using (NH4)2S2O3 as a Reducing Agent
Noella M. Mbuyi and Antoine F. Mulaba–Bafubiandi


Leach Cycle Reduction in Percolation Leaching of a Zambian Copper Oxide Ore by the Use of an Optimized Acid-in-Agglomeration Dosage
P. Basson and S. M. S. Radebe

Recovery of Copper from Reverberatory Copper Slag and Production of a Leach Residue used as a Portland Cement Additive
T. A. Muhlare and D. R. Groot

Copper Solvent Extraction: Status, Operating Practices and Challenges in the African Copper Belt
Kathryn C. Sole and Owen Tinkler

Property–Performance Relationships of Commercial Diluents in Sub-Saharan Africa Copper Solvent-Extraction Conditions
Chad W. Brown

Improved Copper/Iron Selectivity in Solvent Extraction
J.J. Taute, P. Bwando, G. Chisakuta, G. Mitshabu and A. Nisbett

Evaluation of Copper Solvent-Extraction Circuit Data and Performance
N.B. du Preez and J.J. Taute

Understanding Aqueous-in-Organic Entrainment in Copper Solvent Extraction
P. Cole, T. Bednarski, L. Thomas, D. Muteba, G. Banza and M. Soderstrom

Clay Treatment Improvements Using ACORGA® CB1000 Clay Binder
B. Hutzler, P. Cole, L. Thomas, T. Bednarski and R. Zambra


Crud ForxTM - A New Approach to Crud Management
Darren C. Megaw and Sergio Burelli

Modular Mixer-Settlers for SX Plant Sustainability
Mark Weatherseed, Juri Matinheikki, Rami Saario and Henri Fredriksson

The Complementary Aspects of Ion-Exchange Resins and Solvent Extraction in Copper Recovery Processes
Stefan Neufeind, G. Savov, T. Angelov and A. Tsekov

Potential Applications of Nanofiltration Membranes in Copper–Cobalt Processing
L. A. Thompson and A. J. Linington

Corrosion of Lead Anodes in Base Metals Electrowinning
Abbas Mirza, Matt Burr, Timothy Ellis, Dave Evans, Davies Kakengela, Larry Webb, Jerry Gagnon, François Leclercq and Andrew Johnston

The Use of Smoothing Agents and/or Grain Refiners in Copper Electrowinning, with an Evaluation of Newer Dextrin-Based Products
D.M. van Rensburg and J. Steynberg

Effective Grain Modification in Copper Electrowinning with DXG-F7
Roberto Cifuentes, Rigoberto Bravo and Nils Schwarz

Improved Current Efficiency and Anode Life using Edge-Stiffening Anode Fittings
Percy Yañez Castañeda and Nils Schwarz

Enhancement of Profitability of Central African Copperbelt Operations using Direct Cobalt Electrowinning Process
N. Mulaudzi and S. Archer

The Effect of Solids Suspended in a Nickel Electrolyte On Deposit Morphology
K. G. Matshika and D. R. Groot

Role of Metal Accounting in Assessing and Managing the Business Risks Involved inProduction Planning
Luc Lachance, Donald Leroux and Simon Gariépy

Alternative Models for the Calculation of CAPEX and OPEX for a Hydrometallurgical Plant
Harald Osthof, Jürgen Antrekowitsch and Stefan Steinlechner

Improvement of the Cobalt Process at the Chemicals of Africa (Chemaf) Usoke Plant – Effect of Seed Recycle
Patient K. Ilunga, Yves Kalubi, Jo Katembo, Emman Mulaj and Patty Bwando

Unlocking Rustenburg Base Metals Refiner’s Sulfur Removal Section
Justin Hagemann and Max Pelser

Ivanhoe Mines Giant Kamoa Copper Discovery in the DRC – A Metallurgical Perspective
Vongani L. Nkuna, Trisha Naidoo and Steve R. Amos

Process Developments at Central Asia Metals’ Kounrad Project
H. M. Nicholson, A. Moe, D. Kan and P. A. Crane

Developments at Tenke Fungurume Mining Company
Scot Sandoval, Nitin Goel, Aldry Luzanga and Olivier Tshifungat

An Overview of Copper Smelting in Southern Africa
Rodney T. Jones and Phillip J. Mackey

Hard Copper Ores: Process Improvements at Copper Mountain with the Inclusion of a Precrush Circuit ahead of the SAG Mill
David Rose, David G. Meadows and Mike Westendorf


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