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
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
Edmunds, Wilkens, Akerstrom, Haines
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
The Ridgeway Concentrator at Newcrest Cadia was commissioned in 2002 as an ABC circuit to treat the ore from the Ridgeway sublevel cave (SLC) at around 5MTPA. Consisting of a single pinion 32’...
20-Jul-2021
Yahyaei, Ye, Hilden, Ruiz, Gavelan
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
Stockpiles and bins are an integral part of every mineral processing plant, and their design and operation play a significant role in plant performance. Size segregation, which is a common phen...
20-Jul-2021
Powell, Yahyaei, Mainza, Tavares
Presented at the AusIMM Mill Operators Conference Brisbane, Australia 23 - 25 June 2021
ABSTRACT
Maintaining the work balance between the primary SAG mill and secondary ball mill(s) is an overlooked bottleneck, and thus opportunity, in an increasing number of circ...
20-Jul-2021
Paz, Ypelaan, Ryan, McInnes
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
The Anglo Gold Ashanti (AGA) Sunrise Dam Gold Recovery Enhancement Project (REP) was an upgrade project to the existing process plant to increase gold recovery. The project required the existing scree...
20-Jul-2021
Palaniandy, Carr, Johns, Williams
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
Haile Gold Mine is an open pitgold mine located in the state of South Carolina, USA. The concentrator consists of a semi-autogenous mill–ball mill–pebble crusher (SABC) circuit, flash flotation,...
20-Jul-2021
Oblokulov, Green, Van Der Spuy, Becker
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
One of the blessings associated with operating a modern metallurgical facility is the multitude of technologies, techniques and processes available to improve and optimise circuits. Circuit...
20-Jul-2021
McIvor, Bartholomew, Arafat, Daavettila, Savola
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
Ball mill media sizing investigations were carried out for the ball mill circuits grinding minus 12.5mm crushing plant product at Lundin’s Eagle Mine base metal concentrator in Hum...
20-Jul-2021
Ballantyne, Foggiatto, Staples, Lane
Presented at the AusIMM Mill Operators Conference June 2021
ABSTRACT
Vertical stirred mills are more frequently being applied at coarser grinding duties as a replacement for ball milling. This trend is being driven by reductions in footprint and operating cost...
20-Jul-2021
Jiancheng He, Shijie Lu, Qiheng Zhu, DuboWang, Xiaoxu Sun, Jianchao Yao
Published in Proceedings of the IMPC2020 Congress, SAIMM
ABSTRACT
Tower mill is considered to have a better regrinding and fine grinding effect compared with ball mill, and its application is much broader. The spiral agitator...
19-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
Mousavia, Parsapourb, Tafvizia, Mahmoudic, Banisid
Published in Proceedings of the IMPC2020 Congress, SAIMM
ABSTRACT
Generally, regrind circuits are used to increase the degree of liberation of value minerals which are fed to flotation circuits. At the regrind circuit of the Sarcheshmeh copper co...
18-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
*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
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
T.Vizcarra, B. Wong
Presented at SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
JKTech has completed a comparative testing program of Bond tests as an addition to its “round-robin” quality control program for JK Drop Weight (JKDW) and SMC tests. Over seventy Bond tests of repr...
22-Jun-2020
M. Bueno, B. Foggiatto, G. Lane
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
This paper presents an assessment and trade-off study of high-pressure grinding rolls (HPGR)-based vs. autogenous grinding (AG)-based milling options for a 65 kt/d copper/gold project. The study rel...
05-May-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
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
G. Ballantyne, A. Giblett
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
Newmont has a demonstrated history as a leading investor in comminution technology developments. Most notably the cornerstone high pressure grinding rolls (HPGR) demonstration plant at the Lone Tree operat...
06-Jan-2020
R Butar, M Becker, B Putland, I Lovatt, F Kock
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
Continuous improvement is a major key performance indicator (KPI) for many metallurgical operations. Improvement never happens by itself and is rarely attributed to a single party or p...
06-Jan-2020
S Nadolski, R Haycock, K Li, S Seiler, A Kumar
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
A comprehensive energy study was carried out for the Red Chris mill, which processes copper-gold ore at a rate of 30,000 tonnes per day (t/d) and is located in Northern British Columbi...
06-Jan-2020
P Lind, K Murray, A Boylston, & I Arce
SAG Conference Vancouver, Canada September 22 – 26, 2019
ABSTRACT
Mineral processing consumes significant power, primarily in comminution, as well as significant amounts of water through hold-up in conventional tailings facilities. Reducing power and wa...
06-Jan-2020
T. Robinson, B. Widdows and J. Rosenberg
MetPlant 2019, September 9-10, Perth, Australia
POSTER ABSTRACT
Increasing mill availability is a key improvement to the productivity of most mine sites. Mills are often running at maximum capacity, consequently any downtime reduces the mine output. O...
25-Sep-2019
T. Waters, A. Rice, J. Seppelt, J. Bubnich, B. Akerstrom
14th AusIMM Mill Operators' Conference 2018, 29-31 August, Brisbane
ABSTRACT
The Concentrator 1 plant at Cadia transitioned from Cadia Hill open pit to the Cadia East block cave ore body in 2013. As a result of this change, major plant upgr...
01-Jul-2019
A Hinde, E. Ford, J. Makola, A. Jain
Copper Cobalt Africa, 10-12 July 2018, Livingstone, Zambia
ABSTRACT
A large contributor to the energy consumption of metallurgical plants is the mill circuit. A popular circuit configuration is one involving a primary open-circuit semi-autogenous mill fol...
23-Apr-2019
K M Bartholomew, R E McIvor and O Arafat
14thAusIMM Mill Operators’ Conference, 29-31 August 2018, Brisbane, Australia
ABSTRACT
It is well known in the industry that good classification system performance is vital to efficient ball mill circuit
performance. But what is meant by good classificati...
22-Oct-2018
M Powell, M Yahyae, J Geronimo, Z Yussupova and P Kumar
14thAusIMM Mill Operators’ Conference, 29-31 August 2018, Brisbane, Australia
Kazakhstan
ABSTRACT
The appropriate design of liners continues to be an issue on many mills worldwide. Loss of milling capacity
especially at liner ch...
22-Oct-2018
B PUTLAND, I LOVATT, A CERVELLIN AND D SCHWANN
14thAusIMM Mill Operators’ Conference, 29-31 August 2018, Brisbane, Australia
Australia
The Mount Carlton project in Queensland's North East sits on a high-sulphidation epithermal style deposit
rich in gold, copper and silver.
Mt Carlton is an open...
27-Sep-2018
R BRADFORD, W GIFT-AGBEY, E GROBLER, P MORGAN AND T VORSTER
14thAusIMM Mill Operators’ Conference, 29-31 August 2018, Brisbane, Australia
Africa
ABSTRACT
The Asanko Gold Mine in Ghana started processing ore from the Nkran pit in January 2016 at a production
nameplate of 3 Mt/a. The flowsh...
27-Sep-2018
R.E. MCIVOR, K M BARTHOLOMEW, O M ARAFAT AND J A FINCH
Mining Engineering, November 2017
United States
ABSTRACT
Since its development, the functional performance equation for ball milling (McIvor, 1988) has facilitated a new understanding of industrial circuit cause and effect relationships, lea...
06-Jun-2018
Dry processing of magnetic iron ores – addressing cost and environmental issues
W Skinner (1) and J R Kelly (2)
AusIMM Iron Ore 2017 Conference, Perth, Australia, 24-26 July 2017. Paper Number: 86
ABSTRACT
The Iron ore industry has reached the end of an unprecedented period of ex...
26-Aug-2017
The Energy Saving Technology of Beneficiation of Iron Ore
V V KARMAZIN, M A BIKBOV AND A A BIKBOV
MAGNETIC AND ELECTRICAL SEPARATION, VOL 11 (4), PP 211-224
ABSTRACT
The qualitative and quantitative evaluation of liberation of economic minerals and thelevel of contamination of the process produc...
25-Aug-2017
P STAPLES, G LANE, R BRAUN, B FOGGIATTO AND M P BUENO
PRESENTED AT SAG CONFERENCE, SIXTH INTERNATIONAL CONFERENCE ON SEMIAUTOGENOUS AND HIGH PRESSURE GRINDING TECHNOLOGY, VANCOUVER, 20-24 SEPTEMBER 2015.
ABSTRACT
Autogenous (AG) and semi-autogenous (SAG) grinding mills are considered a mature tec...
18-Jul-2017
S NKWANYANA AND B LOVEDAY (1)
PRESENTED AT COMMINUTION ’16, MINERALS ENGINEERING INTERNATIONAL, PUBLISHED IN MINERALS ENGINEERING VOLUMES 103-104, BARRY WILLS (ED), APRIL 2017.
ABSTRACT
Ball-mills are used widely for secondary grinding. Loveday (2010) reported on laboratory tests in which s...
18-Jul-2017
G S ANDERSON1 AND N W MCDONALD2
13TH AUSIMM MILL OPERATORS’ CONFERENCE, PERTH, WA, 10-12 OCTOBER 2016.
ABSTRACT
The IsaMill™ was originally developed to address liberation issues at Mount Isa Mines (now Glencore) operations, McArthur River and Mount Isa in the early 1990s. Follow...
18-Jul-2017
C CARRASCO1 2, L KEENEY 1 2, T J NAPIER-MUNN2, P BODE1
PRESENTED AT COMMINUTION ’16, MINERALS ENGINEERING INTERNATIONAL, PUBLISHED IN MINERALS ENGINEERING VOLUMES 103-104, BARRY WILLS (ED), APRIL 2017.
ABSTRACT
Grade Engineering® comprises a range of techniques aiming to reje...
18-Jul-2017
Breaking Down Energy Consumption in Industry Grinding Mills
J Bouchard (1), G LeBlanc (2), M Levesque (3), P Radziszewski (4) and D Georges-Filteau (1)
49th Annual Canadian Minerals Processors Conference, Ottawa, Canada, 2017
ABSTRACT
Grinding mills are infamous for their extremely...
26-May-2017
Simplified hybrid semi-autogenous grinding mill control – explanation and practical results at the Porgera concentrator
S Ngunz, F van Zyl, F Orrante, E Beltran, M Westcott and S Wilson
AusIMM Mill Operators Conference 2016
ABSTRACT
The primary control objective of the project is to...
26-Apr-2017
The transition from semi-autogenous to autogenous milling at Waihi Gold
C Haines and D Bertoldi
AusIMM Mill Operators Conference 2016
ABSTRACT
The Waihi Gold Mine (WGM) operated by OceanaGold New Zealand Limited is a wholly owned subsidiary of the OceanaGold Corporation of Australi...
26-Apr-2017
Grinding circuit practices at Newmont
A Giblett and S Hart
AusIMM Mill Operators Conference 2016
ABSTRACT
In 2015 operations under the ownership and/or management of all Newmont Mining Corporation subsidiaries (Newmont) produced 5.7 Moz of gold and 619 Mlb of copper from mining opera...
26-Apr-2017
Design, installation, commissioning and operation of fine grinding technology at the Kevitsa Mine
B Nielsen, H Lehto & B Musuku
AusIMM Mill Operators Conference 2016
ABSTRACT
The demand for fine and ultra-fine grinding associated with the processing of more challenging, finer gra...
26-Apr-2017
Abstract
The comminution energy curve is a profoundly simple graphical technique that displays detailed operating efficiency information for industrial comminution processes. The database underlying the methodology has recently more than doubled, to now contain a substantial fraction of the interna...
31-May-2016
ABSTRACT
Simulation work was carried out to analyse how feeding a finer size distribution to a single stage SAG mill in closed circuit with hydro cyclones at Freda Rebecca Gold Mine would affect throughput and specific energy consumption using an Excel based milling process simulator developed by...
07-May-2016
Abstract
A computational model for use with DEM (Discrete Element Method) is proposed for the five mechanisms applying to particle comminution in AG, SAG and coarse feed ball mills. Chipping and rounding are mechanisms that lead to preferential mass loss from corners and edges of particles and whic...
18-Apr-2016
Abstract
Stirred mill technology dates back to 1928 where the idea to use "an agitator and spherical grinding media" was presented. In the context of the mining industry, interest in stirred milling technologies has grown over the last 20 years where the typical observation reported in the literatu...
20-Mar-2016
ABSTRACT
Mill filling is an important operational parameter in a SAG mill circuit and by its control and optimisation it can produce significant improvements in production capacity and energy efficiency. However, it is industry practice to report mill load as the total output given by load cells, o...
20-Feb-2016