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
Friedland, Royal
Published in Proceedings of the IMPC2020 Congress, SAIMM
ABSTRACT
Energy & Densification Systems (EDS) has developed patented new technology crushing/milling equipment. The EDS MultishaftMill is a compact vertical mill –utilising high-speed impacts to break down particles wit...
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
*P. Lind, K. Erwin, R. Chandramohan, D. Tweed, G. Lane, P. Staples, S. Hille, B. Foggiatto, J. Awmack, B. Patterson
Presented at SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
Newmont Goldcorp’s Peñasquito operation, located in the state of Zacatecas in northwest Mexico, is cur...
23-Jun-2020
W. Valery, K Duffy, R. Valle, R. Hayashida, A. Jankovic, P. Holtham, E. Tabosa, B. Andrade
Presented at Procemin GEOMET 2019
ABSTRACT
In late 2017, Hatch was engaged to conduct a Mine to Process Optimization project for a large iron ore operation. The operation consists of three iron ore mines...
22-Jun-2020
S. Michaux & L. O'Connor
ABSTRACT
Geometallurgy is a comparatively new discipline in mining that involves the fundamental integration of multiple conventional technical areas of the industry, where the outcome is a genuinely new methodology. It can be a daunting prospect to be tasked with desi...
08-Jun-2020
Larson
Presented at the SAG Conference Vancouver, Canada September 22 – 26, 2019
Abstract
While stirred mills in regrind and fine grinding duties have become more accepted, there continue to be questions about the testwork used for scaleup and comparisons. One reliable reality check for any futur...
01-Jun-2020
L. Vollert, B. Akerstrom, B. Seaman, J. Kohmuench
COM Copper 2019 Conference 18 - 21 August Vancouver
ABSTRACT
In August 2018, the first full-scale HydroFloatTM cells for the recovery of coarse composited copper and gold were commissioned at Newcrest’s Cadia Valley operation in New South Wa...
04-Mar-2020
Already have a plant? What eco-efficient comminution could mean for you.
15-Jan-2020
B Putland & R Sciberras
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
Many ore bodies are getting harder, more abrasive, and lower in grade. One of the issues designers face is minimizing capital and operating costs when treating such ores. Designers often look to secondar...
06-Jan-2020
A. McElroy, M. Powell, J. Tilberg, M. Hilden, M. Yahyaei, M Linna, A. Johnansson
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
The new Aitik autogenous grinding (AG) milling circuit was based on the successful original milling plant at Aitik, with a focus on low life-of-mine o...
06-Jan-2020
*P. Pearce, C. Gagnon, B. Klein, R. McIvor, S. Makni, F. Wang, A. Kumar
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
The aim of the Crush It! Challenge is to accelerate transformative solutions to reduce energy usage in the mill. Natural Resources Canada supported competition...
06-Jan-2020
C. CARRASCO1, M. GAHONA1, D. LA ROSA2, G. SHAPLAND2, N. BEATON2, & *E. AMINI2
1BHPAv. de la Minería 501, Antofagasta, Chile 2CRC ORETechnology Transfer Centre, Queensland Centre for Advanced Technologies (QCAT)1 Technology Crt., Pullenvale, QLD, 4069, Australia (*Corresponding author: e.amini@c...
06-Jan-2020
M Powell, C Bozbay, S Kanchibotla, B Bonfils, A Musunuri, V Jokovic, M Hilden, J Young, E Yalcin
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
In expanding the mine to process considerably more competent ore sources, this semi-autogenous-ball mill-crusher (SABC) circuit with a...
06-Jan-2020