Maintenance, improved recovery and plant capacity are our key coal preparation strategies. Work is focused on maximising yield, reducing production costs, minimising emissions, reducing water consumption and the use of lower quality water without adversely impacting on process efficiency.
General (35 Reports)
|Author: Mike O'Brien | CSIRO |
In 2006 ACARP funded "The Intelligent Plant" project (C11069) to the value of $0.5M over three years for the CSIRO team at QCAT to define the requirements in terms of instrumentation, monitoring, control and overall management of the next generation dense medium cyclone plant). This .... read more
|Author: Kevin Galvin | University of Newcastle |
It is now more likely than ever that the Australian Coal industry will need to find an alternative to the heavy liquids used to produce a sink-float analysis of coal. Indeed, the Australian Standard on sink-float analysis is likely to be phased out over the next five years. Thus there is a .... read more
|Author: Gary Cavanough | University of Queensland |
The elimination of organic chemicals, used in float/sink testing from laboratories is a priority for the coal industry. A variety of replacements are under investigation including ferro-fluids, zirconium dioxide and caesium formate. This project initially investigated the .... read more
|Author: Michael O'Brien, Ian Hutchinson, Mark Kockanek | CSIRO Energy Technology |
Banana screens have been shown in a previous ACARP project to have a stroke, as measured with a portable screen motion analyser , which is proportional to the mass feed rate to the screen. This report presents the results of pilot plant and coal preparation plant experiments using the .... read more
|Author: Tuan D Nguyen, Anh V Nguyen, Chen-Luh Lin and Jan D Miller | The University of Queensland, University of Utah |
Coal washability is currently obtained by float-sink analysis. The safety and technical concerns associated with the float-sink analysis due to the use of toxic, environmentally hazardous liquids have been recognized by the industry for many years. Moreover, this slow, time-consuming analysis .... read more
|Author: Bruce Atkinson & Graham O’Brien | Basacon Services & CSIRO |
Over the past ten years, ACARP has funded a number of projects which have been used CGA techniques and associated image processing software to undertake a wide range of projects to address specific industry needs at all stages in the coal chain from green field exploration, optimised coal .... read more
|Author: Bruce Atkinson & Andrew Swanson | QCC Resources |
The database is designed to hold raw sizing and float-sink data for coal preparation process equipment.
In order to maximise the value of the data, associated information is also stored that includes all available information about the nature of the installation and .... read more
|Author: Peter Newling | ACARP |
As the sole purpose of this project was to raise awareness of ACARP coal preparation research by plant visits there is no report. An A4 size pdf of the poster used during the 2010 visit can be downloaded .... read more
|Author: Peter Newling | Petan Enterprises |
As the sole purpose of this project was to raise awareness of ACARP coal preparation research by plant visits there is no report. An A4 size pdf of the poster used during the 2012 visit can be downloaded here.
In 2003 .... read more
|Author: Peter Newling | Petan Enterprises |
As the sole purpose of this project was to raise awareness of ACARP coal preparation research by plant visits there is no report. An A4 size pdf of the poster used during the 2014 visit can be downloaded here. .... read more
|Author: Chris Clarkson, Cameron Dorr, Darren Edward | C Clarkson & Associates, Sedgman |
Researchers have developed a specification to enable Australian coal operators to design reliable and accurate sampling systems suited to their individual needs.
Many sampling systems installed in Australian coal mines are unreliable, inaccurate and require a high degree of operator .... read more
|Author: Ted Lewis | Callide Coalfields |
The project was designed to demonstrate on a pilot scale, the technical viability of the laser based sorting process to coal cleaning. The project was managed by Callide coalfields with Barco Machine Vision Systems (Elbicon Pacific Pty Ltd), supplying and operating the processing unit. .... read more
|Author: John Chambers, Yan Liu, Alan Roberts | University of Newcastle |
The effect of various constituents of coal on the handleability of both raw and clean coal is generally unknown. There is some information on the influence of moisture content, size distribution and clay content on coal handleability. However the overall influence on handleability of the .... read more
|Author: Shenggen Hu, Mike O'Brien | CSIRO Energy Technology |
Maintenance accounts for 41% of the washing costs in coal preparation. Sieve bends and centrifuge baskets are among the most costly items in the maintenance area (ACARP project C8063), and these costs are associated with their relatively short life due to abrasive wear. In most situations, .... read more
|Author: Michael O'Brien, Douglas Nemeth, Terry Wex, Stephen Sullivan | CSIRO Energy Technology, A&B Mylec |
The project's objective is to develop a portable prototype measurement system using a digital camera and a laptop computer to measure screen aperture and open area. The measurement of the screen aperture will include the number of aperture measurements made, the mean, histogram and the standard .... read more
|Author: Clement Chao, L Mason, Bruce Firth, Stuart Nicol | CSIRO Energy Techology, Novatech Consulting |
In the primary breakage of a run of mine (ROM) coal to its preparation plant top size, there are three aspects of principle interest to the coal producer:
.... read more
- Adequate liberation of clean coal from mineral matter to maximise the yield of coal meeting product specifications.
|Author: Bruce Atkinson | QCC Resources |
A number of ACARP research projects are demonstrating useful outcomes from coal grain analysis (CGA), for example Project C18041.
Samples for CGA are prepared by the same method as for conventional petrographic analyses, namely by grinding to minus 1 mm topsize whilst aiming to keep .... read more
|Author: Russ Morrison, Stuart McCarthy | BMT WBM |
This investigation has involved the development and testing of an improved control technique for automatically controlled slewing bucketwheel reclaimers. The technique uses laser scanning immediately ahead of the bucketwheel's trajectory, permitting pre-emptive control of slew speed and .... read more
|Author: Michael O'Brien, Bruce Firth, Andrew Meyers, Douglas Nemeth, Adrian Burger | CSIRO Energy Technology |
The objective of this project is the identification of the factors controlling the efficiency of the high capacity Banana screens when they are used to recover media via drain and rinse. This includes potential approaches to improve efficiency with respect to fluid recovery, partition curves .... read more
|Author: Andrew Swanson, I Fletcher, W Membrey, R Davis | Quality Coal Consulting, ACIRL, Mining and Exploration Geology Services |
The prediction of coal size distributions during the process of mining, handling and preparation are of great importance in preparation plant design because of the need to adequately cater for appropriate amounts of fine coal, and to be able to provide realistic samples for washability .... read more
|Author: Michael O'Brien, Bruce Firth | CSIRO Energy Technology |
The current high demand for coal for the export market has raised the issue of the limitations to plant performance and production as the amount of run of mine coal feed to the plant is increased. While there are some obvious limitations such as the amount which the feed conveyor to the plant .... read more
|Author: Joe Sanders | Coalproc |
ACARP commissioned this study into maintenance issues of coal preparation plants, with the aim to identify areas where research may result in potentially substantial improvements.
The scope of the study included:
.... read more
- Review current maintenance practice
|Author: John Eckersley | James Cook University of North Queensland |
This report summarises works conducted at James Cook University on moisture movements and stockpile stability, including the current understanding of factors leading to moisture movement, erosion, shallow surface slipping .... read more
|Author: Joan Esterle, Darren Thornton, Graham O'Brien, Alan Cocker | CSIRO Exploration & Mining, JKMRC, C Clarkson & Associates, Quality Coal Consulting |
Uncontrolled fragmentation, in particular that resulting in the generation of coal fines (<0.5mm), impacts on the processing costs, recovery and quality of product coal. Each step in the mining chain (blast-dig-handle-crush-stockpile) imparts energy to the material causing it to fragment .... read more
|Author: Henry Bartosiewicz, Paul Curcio | MTI, Monash University |
The main objective of this study was to develop a cost effective methodology to ensure that only high quality coating systems are approved for use at the Coal Handling and Preparation Plants (CHPPs) structural components. This goal is to be achieved through development of methods that .... read more
|Author: Andrew Meyers | A&B Mylec |
This project was primarily concerned with the delineation of issues related to the drain rate of medium through banana screens as the screen deck aperture varied, in particular below 1.0mm. Comparisons with existing sieve bend / low head combination technology were also required to enable .... read more
|Author: Michael O'Brien, Ian Hutchinson, Chris Wesner | CSIRO Energy Technology, CSIRO Exploration & Mining |
A previous project developed a method using a portable PC, a triaxial accelerometer and suitable software to determine the stroke and frequency of a vibrating screen and to display the three dimensional motion of the screen on a rotatable and resizable XYZ graph. Screen and panel .... read more
|Author: Tony Kojovic, Graeme O'Brien, F Shi, Joan Esterle | CMTE |
The washability and recovery of coal is governed by two processes: breakage and liberation of stone from coal. The efficiency of liberation is coal type and particle size dependent. Particle size distribution is a function of the material properties of the coal and the breakage energy imparted .... read more
|Author: Bruce Atkinson | QCC Resources |
The Coal Preparation fraternity is used to focussing on Ep(75/25) values when people consider separation equipment performance. However, Ep only describes a small aspect of performance, and in many cases the Ep value is completely irrelevant or even misleading. For example, when considering .... read more
|Author: Anita Hill, James Mardel, T Markley, T Bastow, R Hannink | CSIRO Manufacturing and Materials Technology |
This project gives details of a study of the wear and performance of DMCs from the Hunter Valley and the Bowen Basin. The project consisted of information gathering, in-situ monitoring of DMCs, and ex-situ failure analysis of DMCs.
Due to cost factors there is .... read more
|Author: Anita Hill, Michael O'Brien, A Taylor, Bruce Firth, JI Mardel, MR Hill, TJ Bastow, RHJ Hannink, L Graham, J Wu, A Bui | CSIRO Energy Technology |
In ACARP C11006 (O’Brien et al. 2003), screen aperture dimensions and open area inclusive of pegging were measured using a new image analysis system. In ACARP C11012 (Hill et al. 2004), the material performance and the critical failure mechanisms of screen panels .... read more
|Author: Dr Götz Bickert | GBL Process |
The objective of the study was to undertake a review of seal, spray and wash water filtration technologies currently used in Australia and overseas and technologies with the potential to improve process water quality from a solids content perspective. This is relevant for water used for filter .... read more
|Author: John Doyle | Geosensing Solutions |
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- This research has demonstrated that gravity surveying methods can achieve the resolution necessary to determine the tonnage of coal in a stockpile.
- Tonnages can be determined without using on pile measurements if microgravity techniques are employed.
|Author: Kevin Galvin, Simon Iveson & David Hunter | University of Newcastle |
The aim of this project was to develop a water-based method for generating washability data and analysing the partition performance of separation operations. Fractionation experiments were performed in a laboratory Reflux Classifier on coal samples in the -0.250 +0.038 mm, - 2.0 +0.25mm and -16 .... read more