Ninth Mill Operators Conference 2007

Transcription

1 Ninth Mill Operators Conference 2007 Australasian Institute of Mining and Metallurgy Publication Series Number 1/2007 Fremantle, Australia March 2007 ISBN:

2 Printed from e-media with permission by: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY Some format issues inherent in the e-media version may also appear in this print version. Copyright (2007) by Australasian Institute of Mining & Metallurgy (AusIMM) All rights reserved. Printed by Curran Associates, Inc. (2017) For permission requests, please contact Australasian Institute of Mining &Metallurgy (AusIMM) at the address below. Australasian Institute of Mining & Metallurgy (AusIMM) P.O. Box 660 Carlton South Victoria 3053 Australia Phone: Fax: publications@ausimm.com.au Additional copies of this publication are available from: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY USA Phone: Fax: curran@proceedings.com Web:

3 Contents Keynote Addresses Total System Design for Comminution R A Bearman 3 Some Observations Regarding SAG Milling G Lane 9 Flotation Differential Flotation Commissioning at Telfer A Model Study of Copper Rougher Recovery Optimisation at PT Freeport Indonesia M A Benson, C R Headley, S O Hille and N P Jacob S R Grano, T Akroyd and M A Mular An Integrated Expert and Vision System at BHP Billiton Cannington D La Rosa, A Cantarutti, G J Clarke, M Wortley, C Bouche and O Guyot 39 Optimising Flotation Innovations and the Role of Plant Test Work P Bourke and S Grönstrand 49 The Application of Ausmelt s AM28 Alkyl Hydroxamate Flotation Reagent to Fox Resources West Whundo Copper Ore at Radio Hill, Western Australia T Hughes, K Lee, G Sheldon, J Bygrave and L Mann 51 Operating Variables Affecting the Bubble Size in Forced-Air Mechanical Flotation Machines J E Nesset, J A Finch and C O Gomez 55 Validation of the AMIRA P9 Flotation Model Using the Floatability Characterisation Test Rig (FCTR) R G Coleman, J-P Franzidis and E V Manlapig 67 A Correlation Between Visiofroth TM Measurements and the Performance of a Flotation Cell Improved Flotation Process Control at Newcrest s Telfer Operation K Runge, J McMaster, M Wortley, D La Rosa and O Guyot D Baas, S Hille and J Karageorgos Optimisation of Flotation Circuit Configuration at PT Newmont Nusa Tenggara X Zheng, K McCaffery and R P Halomoan 95

4 Grinding/Mill Liners Efficiency of the Detritor Mills at Zinifex Century Mine M Gao, L Reemeyer, D P Obeng and R Holmes 105 Bolting Technology Understanding and Utilising the Inherent Mechanical Properties of Bolts/Nuts B Docherty 111 Advanced Mill Relining A Key Operational Control (Not Simply a Must Do Maintenance Function) J Russell 113 The Effect of Aspect Ratio on the Grinding Efficiency of Open and Closed Circuit AG/SAG Mills S Morrell 121 Liner Optimisation to Improve Availability of the Ridgeway SAG Mill M Weidenbach and P Griffin 125 Process Design of a Regrind Facility at the Leinster Nickel Operations to Improve Concentrator Recovery D R Seaman, K E Barns, P J Sharman, S A Thomas andkjstokes 131 Advances in the MillMapper Technology for Grinding Mill Liner Thickness Gauging J Franke and D Lichti 139 Practical Experience in the Design and Operation of Semi-Autogenous Grinding (SAG) Mill Liners D Royston 147 Plant Operations Metallurgical Accounting in the Northparkes Concentrator A Case Study W M Jansen, R Morrison and R Dunn 157 Managing Mineral Processing Plants in Australia Tips and Pitfalls R S Francis and G D Cooper 169 Process Design Aspects at Bendigo Mining s Gold Operations E J McLean, T E Hayward, D H English and S J Smith 175 Beaconsfield Gold Mine Ironing Out the Bugs R Holder 185 A Review of Processing at the Cannington Ag/Pb/Zn Mine R Alford and G Clarke 195 Design of a Large-Scale Concentrator for Treatment of a Copper Skarn Orebody J Glatthaar, G Lane, M Phillips and T Hayward 201 Plant Expansions and Process Development at LionOre s Lake Johnston Operations I Mitchell, D Zoetbrood, P Henderson, S O Neill and A Adem 211

5 Process Improvements Maintaining the Benefit How to Ensure Mine to Mill Continues to Work for You Improving Fine Copper and Gold Flotation Recovery A Plant Evaluation A Dance, W Valery, A Jankovic, D La Rosa and S Esen T Rivett, G Wood and B Lumsden Reducing WAD Cyanide at the Discharge Spigot J A Rumball, S D Munro and M L Habner 229 Evaluating an Alternative to the Gravity Recoverable Gold (GRG) Test G K N Subasinghe 235 The Importance of Geometallurgical Analysis in Plant Study, Design and Operational Phases D David 241 Cyanide Measurement and Control for Complex Ores and Concentrates P L Breuer and J A Rumball 249 New Technology and Approaches in Reagent Development and Applications in the Processing of Base and Precious Metals and Industrial Minerals D R Nagaraj 255