Review and Optimization of the Hudbay Constancia Comminution Circuit *M. Medina1, G. Sotomayor1, V. Manchego1, J. Bonilla1, W. Valery2, R. Valle2, K. Duffy2, E. Wang2, C. Plasencia2 Hudbay Perú SAC, Hudbay Minerals Av. Jorge Chávez 235 Dpto 701, Lima, Lima 18 Hatch Pty Ltd. 61 Petrie Terrace, B...

09-Jul-2024

Mine to Flotation Process Optimization at Chinalco Toromocho OperationDai Fangrong1, Dong Yang1, Alfonso Muñoz1, Walter Valery2, Roberto Valle3, Erico Tabosa2, Joyce Siong2 and Claudia Plasencia3 Minera Chinalco, Peru Hatch, Australia Hatch, Peru *This paper was presented at Procemin-Geomet...

09-Jul-2024

MODIFIED BOND AND RITTINGER ENERGY-SIZE RELATIONSHIPS FOR LABORATORY FINE GRINDING A. Jankovic1#, W. Valery1, M. Sederkenny2, K. Duffy1 Hatch, 61 Petrie Terrace, Brisbane Qld, 4000 Australia Queensland Alumina Limited, Gladstone, Qld, Australia *This paper was presented at the 2023 Internatio...

09-Jul-2024

Real-Time Estimation of SAG Mill Charge Characteristics for Process Optimization *P. Toor1, W. Valery1, S. Morrell2, K. Duffy1 Hatch 61 Petrie Terrace. Brisbane, QLD, 4000, Australia SMC Testing, Kenmore Hills, QLD, 4069, Australia (*Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.)*This paper was...

09-Jul-2024

Integrated Mine-To-Mill Optimization of the Toromocho Operation at Minera Chinalco, Perú *D. Fangrong1, D. Yang1, A. Muñoz1, W. Valery2, R. Valle2, B. Bonfils2, and C. Plasencia2 Minera Chinalco Perú S.A. Av. El Derby 250, Piso 20, Lima 33, Perú Hatch Pty Ltd. 61 Petrie Terrace, Brisbane, Queen...

09-Jul-2024

Mine-to-Mill Optimization and Continuous Improvement of Lundin Mining's Chapada Operation in Brazil *G. Evangelista1, A. Moreira1, F. Moura1, I. Souza1, F. Resende1, P. Henrique1, J. Corsini2, A. Ribeiro2, W. Valery3,R. Valle3, R. Hayashida3, B. Bonfils3, K. Duffy3, and C. Plasencia3 Lundin Mini...

09-Jul-2024

Review and Upgrade of the Throughput Forecast Model of Minera Los Pelambres Francisco Abbott1, Liduvina Rodriguez1, Michel Morales1, Walter Valery2, Roberto Valle3, Rodrigo Hayashida4, Benjamin Bonfils2, Kristy-Ann Duffy2 and Claudia Plasencia3 Minera Los Pelambres, Antofagasta Minerals, Chile...

09-Jul-2024

The Novel EDS Multishaft Mill – A Case Study B.E. Friedlanda*, T. Chenjeb, C.K. Oberholzera Energy & Densification Systems, Bryanston, Johannesburg 2191, South Africa Anglo American – Technology Development, Brisbane City, QLD 4000, Australia *Corresponding author email: This email address is being protected from spambots. You need JavaScript enabled to view it....

09-Jul-2024

Performance Analysis of HRC™ HPGR in Manufactured Sand Production Júlio Cesar Figueiredo de Almeida 1,2,*, Homero Delboni, Jr. 2, Rafael Bento 3, Alfredo Reggio 2 and Everson Cremonese 2 Metso Outotec, Sorocaba 18087-101, Brazil Department of Mining and Petroleum Engineering, University of Sao...

09-Jul-2024

Pilot Testing and Plant Design Comparison of Dry VRM Milling plus Magnetic Separation with AG and Ball Milling plus Magnetic Separation for Grange Resources' Southdown Ore  D David1, C Stanton2, D. Olwagen3, Dr C Gerold4, C Schmitz5, S Baaken6, M Everitt7  FAusIMM CP(Met), Senior Consultant, Woo...

09-Jul-2024

Commercialisation Pathway for Low Energy Gyratory Rolls Crusher Technology M Drechsler1, W Skinner2 1. Mark Drechsler, Director, CBSM Mining Services Pty Ltd, Adelaide SA 5167, This email address is being protected from spambots. You need JavaScript enabled to view it. 2. William Skinner, Research Professor, Future Industries Institute, University of South Australia, M...

15-Dec-2023

Commercialisation pathway for low energy wet/dry gyratory rolls crusher comminution technology Mark Drechsler a, William Skinner b c aDirector, CBSM Mining Services Pty Ltd, Adelaide, SA 5167, Australia bFuture Industries Institute, University of South Australia, Maw...

07-Nov-2023

Semi-analytical modelling of a multi-shaft mill Carlos Les (a),∗, James M. Finley (a), Boaz Friedland (b) a) Element Digital Engineering, United Kingdom b) Energy and Densification Systems (EDS), Johannesburg, South Africa *This paper was presented at MEi Communution 23 Conference held...

18-Sep-2023

Fractal Energy: Combining fractal dimension of fracture surfaces and Size Specific Energy to describe comminution Grant Ballantyne Director of Technical Solutions, Ausenco This email address is being protected from spambots. You need JavaScript enabled to view it. *This paper was presented at MEi Communution 23 Conference held 17-20 April 2023 in Cape Town, So...

15-Sep-2023

Pumping sustainably - power and water consumption in mineral processing plants: someone should care A Varghese1 4 S Martins2, E Lessing3, G M Hassan5 and A Karrech6 Business Development Manager - Pumps, Metso Outotec, Perth WA Email: This email address is being protected from spambots. You need JavaScript enabled to view it. Research and Development Engineer,...

12-Jul-2023

Helping to reduce mining industry carbon emissions: A step-by-step guide to sizing and selection of energy efficient high pressure grinding rolls circuits Stephen Morrell SMC Testing Pty Ltd, Australia Keywords: Comminution, Energy efficiency, Carbon emissions, High pressure grinding rolls ABSTRA...

12-Jul-2023

Microwave Heating Behaviour of Ores and its Application to High-Power Microwave Assisted Comminution and Ore Sorting J. Forster1, A. Olmsted2, X. Tian3, D. Boucher1, M. Goldbaum1, C. A. Pickles2, E. R. Bobicki4 1. University of Toronto, Toronto, ON, Canada2. Queen’s University, Kingston, ON,...

12-Jul-2023

Innovations in Comminution    Greg Lane, Chief Technical Officer, Ausenco  Grant Ballantyne, Director Technical Solutions, Ausenco  Bianca Foggiatto, Director Comminution & Processing, Ausenco   Watch Full Webinar here    Agenda 1. Why focus on comminu...

12-Jul-2023

Bueno, Torvela, Chandramohan, Liedes, Powell, Chavez Matus, Published in Minerals Enginering April 2021 ABSTRACT The mining industry needs a low-cost and reliable breakage characterization test which can rapidly process a large number of samples for geometallurgical modelling. The more samples a...

09-May-2022

Erol, Wettstein, Dance Presented at Comminution '21 - April 2021 ABSTRACT Over the past few years, Pinto Valley Mine of Capstone Copper has made steady improvements in mill throughput from a combination of blasting, crushing and grinding operational changes. Detailed data collection exercises (in...

09-May-2022

Shelley, Davies, Olivier and Atta Danso ABSTRACT This paper reflects on how measurements from inside an operating SAG mill might be used to better understand throughput, mill wear and energy dissipation within the mill. The paper discusses how the measurements might influence and enhance approach...

09-May-2022

Faramarzi, Napier-Munn, Morrison, Kanchibotla Published in Minerals Engineering July 2020 ABSTRACT The heterogeneous nature of orebodies introduces large uncertainties into all quantitative evaluations, process design and process predictions. Measuring the extent of the variability of ore compe...

09-May-2022

Camalan & Önal Published in Mining, Metallurgy & Exploration October 2020 ABSTRACT Mineral liberation is one of the primary objectives in comminution circuits for the downstream separation of valuable minerals. Breaking minerals through their grain boundaries (grain-boundary breakage) ena...

09-May-2022

Evangelista, Moreira, Moura, Souza, Resende, Lisboa, Corsini, Ribeiro, Valery, Valle, Hayashida, Plasencia Presented at Procemin-GEOMET 2021 ABSTRACT Hatch and Enaex conducted a joint Mine-to-Mill optimization project at Lundin Mining’s Chapada operation in Brazil. The main objective was to maxim...

29-Nov-2021

Regino, Wong, Lopez, Adams, Hobert, Wasmund ABSTRACT The use of fluidized beds to enhance the flotation efficiency of coarse particles has been practised industrially using Eriez’ HydroFloat® separator in phosphate and potash for many years and has recently been successfully extended to sulfide m...

12-Oct-2021

Bonfils, Valery, Jankovic, Duffy, Tabosa, Holtham Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The benefits of Mine-to-Mill optimisation have been understood by the industry for many years. If well executed, with a structured methodology, the overall operation throughput (...

20-Jul-2021

Radford, Lovatt, Putland, Becker Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The Gruyere Gold Project was discovered by Gold Road Resources Limited in October 2013 on the Yamarna Belt 200km east of Laverton in Western Australia. The Feasibility Study for Gruyere, which wa...

20-Jul-2021

Wang, Vazirizadeh, Rosario Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Advances in data science, machine learning, and artificial intelligence are transforming mining and mineral processing, and making them more algorithm intensive. The paradigm is shifting from one of detec...

19-Jul-2021

Papadopoulou, Asbjörnsson, Hulthén, Evertsson Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Crushing plant managers need to assess, manage, and communicate the environmental impact induced by their crushing plant operations as a step towards the sustainable development of the...

19-Jul-2021

Pechea Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Since 1952, Bond’s equation has been used as a standard to predict the specific energy of grinding for a given duty. The Bond’s equation considers that the exponent is constant for all conditions. Hukki, in 1961, pointed out...

19-Jul-2021

Ghoreishi-Madiseha, Shadi, Rafezi, Sasmito, Manouchehri, Hassani Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Weakening rocks by taking advantage of microwave-induced microcracks is a promising solution for comminution processes. This paper investigates the effects of microwa...

19-Jul-2021

Agbenuvor, Antonio, Jokovic,and Morrison Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Body breakage usually involves breakage of particles by compression between two surfaces or impacted against a rigid surface, with the latter of interest in this current study. This mode of...

19-Jul-2021

Published in Proceedings of the IMPC2020 Congress, SAIMM Filippov, Tripathy, Filippova, Diot ABSTRACT Among different pre-treatment methods, a high voltage electric pulse was recently developed and is gaining popularity due to multi-benefits such as pre-weakening along the grain boundaries, as we...

12-Jul-2021

Published in Proceedings of the IMPC2020 Congress, SAIMM Authors Senchenkoa, Kulikov ABSTRACT The relationships revealed between ore hardness and specific energy consumed by crushing and grinding are described in the paper. A comparison of key technical and economical parameters of SAG and HPGR...

12-Jul-2021

Hassani, Shadi, Rafezi, Sasmito, Ghoreishi-Madiseh ABSTRACT Enhancing the energy-effectiveness of microwave-assisted fragmentation is one of the overlooked areas in the published literature. A novel calorimetric technique is proposed to quantify the effect of inductive heating within a microwave c...

07-Jun-2021

Frausto, Ballantyne, Runge, Powell, Wightman, Evans, Gonzalez, Gomez ABSTRACT The heuristic of a constant liberation by size independent of the degree of comminution has been established as a robust assumption over time. Therefore, when assessing the comminution circuit performance, achieving a fi...

07-Jun-2021

Gao, Qina, Hana, Han, Lia Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT In the present study, an innovative comminution technology of high-voltage pulse discharge was proposed for galena to weaken the mechanical property. The results of pre-treatment experiments indicated tha...

18-May-2021

Roper, Borissenko, Daniel Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Eccentric High Pressure Centrifugal Comminution (eHPCC) is a novel comminution device that provides a single step to achieve a desired target grind size. The mechanisms within the unit mirror particle brea...

18-May-2021

Valery, Duffy, Holtham, Tabosa, Andrade Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Pre-concentration has potential to significantly improve Mineral Resource efficiency by removing gangue early in the process, before energy intensive and expensive comminution and...

17-May-2021

A high-level study into mining energy use for the key mineral commodities of the future. Author Marc Allen, Technical Director, engeco Report commissioned by The Weir Group PLC Executive Summary The mining industry plays a critical role at the heart of modern global economy, extracting and pro...

10-May-2021

Góralczyk, Krot, Radosław, Ogonowski Abstract Tumbling mills have been widely implemented in many industrial sectors for the grinding of bulk materials. They have been used for decades in the production of fines and in the final stages of ore comminution, where optimal levels for the enrichment p...

19-Apr-2021

Keeney, La Rosa, Walters, Rutter, Scott Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Bulk ore sorting technologies, whether surfaced based or penetrative, have seen an increased uptake by the mining industry for preconcentration application. As with all technologies...

30-Mar-2021

Anyimadu, Appeah Owusu, Peattie, Chamberlain, Aniawu – Asumakah Presented at the Preconcentration Digital Conference November 2020 ABSTRACT This is an integrated geology and plant improvement study arising from the heterogeneity seen in mineralogy and gold association at the Obuasi goldmine in Gh...

30-Mar-2021

Adair, Revell, King, Keeney Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Grade Engineering®, integrated across the mine value chain, has a pivotal role to play in achieving step change reductions in energy and water usage in mine operations. High levels of gangue re...

29-Mar-2021

Pamparana, Kracht, Ortiz, Haas Presented at COM 2019, At Vancouver, Canada ABSTRACT This work explores the effect of ore hardness variability on the design of a solar photovoltaic system with battery storage and grid backup, to operate a semi-autogenous grinding mill (SAG). First, a case of two s...

23-Jun-2020

K. Bru, R. Sousa, M. Leite, C. Broadbent, G. Stuart, D. Pashkevich, M. Martin, M. Kern, D. Parvaz Minerals Engineering ABSTRACT Two approaches for the use of the Electric Pulse Fragmentation (EPF) in the beneficiation of a low-grade cassiterite schist ore were investigated through pilot-scale t...

23-Jun-2020

*K. Bru, M. Beaulieu, R. Sousa, M. Leite, A, De Sousa, E. Kol, J. Rozenkranz, D. de Parvaz Minerals Engineering ABSTRACT Electric Pulse Fragmentation (EPF) is an innovative technology that uses High-Voltage Pulsed Power (HVPP) for the selective comminution of a material. This paper aims to compa...

23-Jun-2020

*P. Shelley, I. Molina, D. Patsikatheodorou Presented at Procemin GEOMET 2019 ABSTRACT The paper shows how measurements from inside an operating SAG mill are now a reality. The paper discusses how the measurements might affect and enhance energy efficient mill optimisation. Energy efficient comm...

23-Jun-2020

*K. Tungpalan, A. Nguyen, C. Evans, E. Manlapig, K. Nguyen Presented at Procemin GEOMET 2019 ABSTRACT Ore texture represents the fundamental ore properties that significantly influence processing behaviour. However, the current measurement to obtain detailed textural information is through the Q...

23-Jun-2020

*G. Ballantyne Presented at SAG Conference Vancouver, Canada September 22 – 26, 2019 ABSTRACT Assessment of comminution energy intensity has traditionally been confined to the crusher and mill motor power consumption. However, a measure of ancillary equipment power and the embodied energy consume...

23-Jun-2020