Souto, Bechir, Esteves, Galery, Senna Presented at the Preconcentration Digital Conference November 2020 ABSTRACT The current moment experienced by the mineral industry is marked by a series of economic, social and environmental challenges. Among the main challenges, it is important to highlight...

13-Apr-2021

Robben, Kobzev Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Sensor-based particle sorting of gold ores is the masterclass of preconcentration. The technical challenges of a grade in ppm scale makes a direct detection with currently available technology in milliseco...

13-Apr-2021

Noble, Ferguson Presented at the Preconcentration Digital Conference November 2020 ABSTRACT The mining industry is facing economic pressures to treat more challenging and lower grade ore types, as well as pressure relating to environmental impact and social license to operate. Preconcentration t...

13-Apr-2021

Luo, Danoczi, Nakutnyy Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Sensor-based sorting methods to remove waste or for upgrading ore prior to downstream metallurgical processing is becoming more prevalent for mining operations. X-ray transmission (XRT) sorters are...

13-Apr-2021

Kurth, Balzan Presented at the Preconcentration Digital Conference November 2020 ABSTRACT The potential for bulk diversion was identified and quickly implemented following the development of bulk sensing technologies applied to conveyed flows. In the early 1980s real time analysis of ash in coal...

13-Apr-2021

Koh, Amini, McLachlan, Beaton Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Preconcentration greatly reduces the ore mass input to the processing plant while upgrading the grade. One of the commonly used methods of preconcentration is optical sorting. These methods r...

13-Apr-2021

Coghill, Curtain, Lovric, McEwan, Milinkovic, Miljak, Roberts, Stefulj, Yong Presented at the Preconcentration Digital Conference November 2020 ABSTRACT The CSIRO has pioneered the development and use of certain classes of magnetic resonance (MR) for mining applications. The MR technique is a rad...

13-Apr-2021

Coghill, Cutmore, Carter, Millen, Haarlem Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Due to the low concentration of gold, ore sorting for gold has always required measuring indirect properties, such as density or colour, to allow separation on a rock by rock basi...

13-Apr-2021

Scott, Rutter, du Plessis, Alexander Presented at the Preconcentration Digital Conference November 2020 ABSTRACT It is generally acknowledged that bulk ore sorting is an attractive prospect for the mining industry. However, uncertainties relating to the operational performance of sensor technolog...

13-Apr-2021

Rech, Kroukamp Presented at the Preconcentration Digital Conference November 2020 ABSTRACT CRONIMET Australia in cooperation with Speciality Metals International, the mining lease holder of the Mt Carbine Tungsten mine, have demonstrated the preconcentration and processing of large (>12 millio...

13-Apr-2021

Parry Presented at the Preconcentration Digital Conference November 2020 ABSTRACT In May 2018 Kasbah Resources Limited (“Kasbah”) completed an ore sorting test work program which was a precursor to releasing in July 2018 an updated Definitive Feasibility Study (“DFS”) for the Achmmach Tin Project...

13-Apr-2021

Pyle, Valery, Holtham, Duffy Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT A conceptual scoping study was conducted to investigate pre-concentration options for upgrading ore from an Ag-Pb-Zn deposit. The low grade of the ore would result in only modest economic returns, given...

30-Mar-2021

Pyle, Ballantyne, Chandramohan, Vizcarra, Lane Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Preconcentration, through gravity separation (Wallace et al, 2015), magnetic separation and particle size (Clout, 2013), has been used in many historical projects to convert...

30-Mar-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

Bearman, Bowman, Dunne AusIMM Publication ABSTRACT Upgrading coarse feed in gold plants, through a process of selective processing, has always been of interest. The level of interest has waxed and waned over the last 30–40 years, but improvements in methods and pressure to increase the efficienc...

23-Jun-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

J.STARKEY1, B. HILSHER2, S. REEVES3 and J. HEDDERSON4 J. Starkey (1), B. Hilscher (2), S. Reeves (3) and J. Hedderson (4)  1. Sacré-Davey Engineering, and Starkey & Associates Inc, Oakville, Canada. Email: This email address is being protected from spambots. You need JavaScript enabled to view it. 2. Sacré-Davey Engineering, Oakville,...

23-Apr-2019

G R Ballantyne, M Hilden, K Bartram and V Souto 14thAusIMM Mill Operators’ Conference, 29-31 August 2018, Brisbane, Australia ABSTRACT Particle sorting allows partially liberated minerals to be separated prior to energy intensive fine grinding. Sensors select particles for separation a...

23-Oct-2018

B Nielsen, J Rohleder, H Lehto and C Robbe MetPlant 2017 – Metallurgical Plant Design and Operating Strategies – World’s Best Practice, 11-12 Sep 2017, Perth, Australia Abstract Sensor-based ore sorting is being increasingly used to reduce the amount of low-grade and waste m...

26-Oct-2017

Lutke von Ketelhodt, L. Kotelo, N. Schmalbein 49th Annual Conference of Metallurgists, Vancouver, Canada, August 27-30, 2017. Abstract Barkerville Gold Mines (BGM) is focused on building a sustainable, low impact, innovative, high-margin mining company in British Columbia’s Cariboo mini...

26-Sep-2017

Brent Hilscher, Preetham Nayak, Leo Lorio, Nawoong Yoon 49th Annual Conference of Metallurgists, Vancouver, Canada, August 27-30, 2017. Abstract Mining has been a staple to technological advancement ever since the dawn of time. By harnessing the different physical and chemical properties...

26-Sep-2017

Henry Kurth 49th Annual Conference of Metallurgists, Vancouver, Canada, August 27-30, 2017. Abstract Real time analysis of conveyed bulk materials can be used to improve process performance by reducing variability, and upgrading ore quality through selective removal of increments of flow that...

26-Sep-2017

Arvin Mazhary, Huaizhe Li, Bern Klein 49th Annual Conference of Metallurgists, Vancouver, Canada, August 27-30, 2017. Abstract Although sensor-based ore sorting has gained significant attention recently, sorting gold deposits still face a high level of skepticism by gold mining companies. In...

26-Sep-2017

Peter Coghill, Channel Tissot, Rhys Palmer 49th Annual Conference of Metallurgists, Vancouver, Canada, August 27-30, 2017. Abstract Due to the low concentrations of gold, direct measurement of gold concentration in ore on-belt has not been seriously considered until now. Pre-concentratio...

26-Sep-2017

W VALERY (1), K DUFFY (1), P HOLTHAM (2), A REPLE (3), P WALKER (4), P ROSARIO (1) PRESENTED AT IMPC 2016: XXVIII INTERNATIONAL MINERAL PROCESSING CONGRESS, AT QUEBEC CITY, CANADA ABSTRACT The mining industry is facing declining feed grades which require the mining and processing of larger volume...

18-Jul-2017

Bridging the gap: Understanding the economic impact of ore sorting on a mineral processing circuit J Lessard (1), W Sweetser (1), K Bartram (2), J Figueroa (1) and L McHugh (1)   ABSTRACT Automated, continuous ore sorting is a mature technology that has only been used to a limited extent...

26-May-2017

Technical Review and Evaluation of Ore Sorting Technology Incorporating Results from Four Properties B Hilscher (1), P Nayak (1) and N Yoon (1) 49th Annual Canadian Minerals Processors Conference Proceedings, Ottawa, Canada, 2017.   ABSTRACT The mining industry is currently facing chal...

26-May-2017

Upgrading low-grade gold ore stockpiles by preconcentration using ore sorting – an assessment of the economic impact and viability. A N Parry and G van Wyk Mill Operators Conference 2016 ABSTRACT Sensor based automatic ore sorting technologies are used in the minerals industries to efficiently...

26-Apr-2017

Abstract With energy costs increasing and ore grades diminishing, the role of pre-concentration in hard rock mining operations has been gaining greater interest. To maximise energy conservation, the pre-concentration process should be conducted at as coarse a grind size as possible, while minimis...

11-Jun-2016

X-ray transmission (XRT) sorting has been introduced into the minerals industry in 2006 and has found various applications in diamonds, industrial minerals, and metal ore processing since. The technology offers planar projection of the atomic density of single particles similar to the principle know...

21-May-2016

Abstract Comminution and classification circuits consume significant amounts of energy. Some estimates show that comminution processes accounts for around 40 % of the total energy consumed in mining operations and 1.5-1.8 % of the total national energy consumption in mining intensive countries such...

19-Apr-2016

Abstract This paper discusses how to effectively conduct energy efficiency studies during the design of new mineral processing plants and plant expansions. Energy management studies for new plants are ideally conducted as part of the feasibility study, but can also be done at the detailed design...

09-Apr-2016

Abstract Near infrared sensors can be a very useful technique for the qualitative analysis of complex ores, and thus could be useful for the preconcentration of ores. In this paper, individual particles of hydrothermally-formed copper ore sampled from a mine in the Los Pozos mining district, northe...

29-Feb-2016

ABSTRACT In 2012, a single module heavy medium cyclone plant (HMP) was installed at the Glencore Zinc’s (then Xstrata Zinc) McArthur River lead zinc mine. The HMP formed the first part of the MRM Phase 3 Project to increase run of mine (ROM) capacity from 2.4 to 5.5 Mt/a. The purpose of the HMP...

17-Feb-2016

ABSTRACT Over the 2012 to 2014 period, Anglo American Platinum (AAP) has been investigating the application of ore upgrading using XRF sensor technology sourced from Rados International, at Mintek South Africa. This has been in parallel with a more comprehensive sensor sorting investigation at th...

13-Feb-2016

Abstract As high grade ore deposits are depleted, remaining deposits are generally lower grade and require the mining and processing of larger volumes of material per tonne of product. These low grade deposits often contain a large proportion of barren gangue. Pre-concentration aims to remove this...

26-Nov-2015

ABSTRACT The benefits of pre-concentration using sensor-based sorting have been widely reported with the greatest potential impacts on low grade and high tonnage operations such those mining copper porphyry deposits. Due to the non-selective nature of bulk surface mining methods, significant quan...

25-Nov-2015

ABSTRACT Geoscan (using PGNAA) is used for multi-elemental analysis of conveyed bulk materials in real time measuring continuously through the full bed depth, and unaffected by belt speed, particle size, layering and dust levels. Tonnage weighted results are used to monitor quality, divert increm...

25-Nov-2015

Abstract In addition to minerals displaying variations in grade within an ore body, blasted rock often concentrates particular minerals preferentially into finer size fractions. Grade engineering strategies seek to exploit intrinsic heterogeneity and grade variability to improve the viability of op...

15-Nov-2015

Abstract The UG2 ore in South Africa is exploited for its enrichment in the platinum group minerals (PGMs). Given that the PGMs are typically very fine grained, the potential for poor liberation is high, especially with conventional cyclones providing a poor split of the coarse silicates and fine c...

15-Jul-2015

Abstract The JKMRC has recently reported a novel ore pre-concentration method using high voltage electrical pulses (Part 1 of this paper). The technique utilises metalliferous grain-induced selective breakage under a controlled pulse energy input, and size-based screening to separate the feed ore i...

15-Jul-2015

Abstract A novel ore pre-concentration technique using high voltage pulses is proposed in this study. The technique utilises metalliferous grain-induced selective breakage, under a controlled pulse energy loading, and size-based screening to separate the feed ore into body breakage and surface brea...

14-Jul-2015

Abstract There is increasing demand to optimise yield and increase capacity of crushing plants. Research in this area has resulted in the development of numerous optimisation tools, and recent research has shown that the quality aspects of production have great influence on the optimisation results...

12-Jun-2015

ABSTRACT Pre-concentration of precious metal and base metal ore types is becoming more relevant with the discovery, development and operation of many lower grade deposits around the world.  The fluctuations in metal prices expose many mines to risks especially dealing with low and variable ore gr...

02-Jun-2015

New Gold Inc.’s New Afton concentrator commenced operation in June 2012, producing a copper-gold-silver concentrate. During the first two years of operation, various optimization efforts have improved mill throughput, recoveries and concentrate grade. Daily mill throughput has increased 20% above th...

03-Apr-2015

Developments in ore sorting technologies have provided the ability to achieve economic dry pre-concentration of ores prior to a grinding/concentration circuit and, in some cases, produce a high grade concentrate of sufficient quality for end use. The use of dual X-ray transmission (XRT) sorting has...

16-Mar-2015

Although ore sorting in mining is not a new concept, sensor-based sorting has failed to gain broad acceptance due to perceived challenges with the technology. In order to gain wider applications, this research focuses on treating waste rock and low-grade ore to identify and test appropriate sensors...

13-Mar-2015

Abstract Ore sorting technology represents a step-change improvement in eco-efficient comminution strategies. Sorting equipment offers the benefit of greatly reducing the comminution energy required per tonne of mineral processed by identifying stones that contain ore and separating them from sto...

02-Oct-2014