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Coal Preparation                                  reports

Coal Preparation

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.


Process Control (34 Reports)

A New Flowrate Measuring Technique for On-Line Monitoring of Coal Washing Processes (Stage 1) and Cross Correlation Flowmeter Plant Trial (Stage 2)

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C1004601/02/2005
Author: Michael O'Brien, Shenggen Hu, Ian Hutchinson | CSIRO Energy Technology

This project has developed and field tested a simple, robust flow rate measuring technique based on signal cross-correlation. It was conducted in two stages. The first, for which a report was published in October 2002, conducted a proof of concept investigation at pilot scale over a wide ....  read more

 

Acoustic Emission Soft-Sensor Alarm System for Dense Medium Cyclones

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C1604520/08/2008
Author: Steven Spencer, R Bruniges, A Williams, V Sharp, S Rainey, G Roberts, R Stevens, M Millen | CSIRO Minerals

A commercial prototype Acoustic Emission (AE) analyser has been developed for monitoring performance of washery Dense Medium Cyclones (DMCs), in particular the detection of adverse DMC operating conditions.   The analyser consists of an electronics module and multiple accelerometer ....  read more

 

Adsorption Tracer Technology

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C504801/04/1997
Author: Stuart Nicol, Alan N Buckley | Novatech, CSIRO Energy Technology

The primary objective of this project was to develop an instrumentally based tracer detection system which would result in a cost effective on-line method for the measurement of separator efficiency in coal cleaning circuits.

The method would be based ....  read more

 

Assess Status and Potential Improvements To Accuracy of On-Line Gauges

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C309001/04/1999
Author: Darren Edward, Chris Clarkson | C Clarkson and Associates

An ACARP commissioned study into process control in coal preparation plants in 1993 suggested that there exists widespread dissatisfaction within the Australian industry that such ....  read more

 

Assessment of the Impact of Coal Variability on Plant Operations and Design

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C504719/03/1998
Author: Andrew Swanson, Robert Drummond, Kevin Galvin, Peter Mullins | Quality Coal Consulting, University of Newcastle, CSIRO Energy Technology

When designing and operating coal preparation plants, it is essential to take into account potential variation in coal quality. Plant operations are also adversely affected by internal distribution biases. This ACARP funded project has studied these factors by making use of Monte Carlo ....  read more

 

Autonomous Monitoring and Test Station

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C1101001/04/2006
Author: Barry Jenkins, Elliott Duff, Peter Holtham | Jenkins-Kwan Technology

The main aim of the project was to develop and test a low-cost system for monitoring of coal preparation plant systems and processes in troubleshooting or investigative applications. The system (or tool) is autonomous, can be interfaced with a wide variety of probes, sensors and ....  read more

 

Centrifugal Dewatering Properties of Australian Coals

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C2105211/11/2013
Author: Michael O’Brien, Andrew Taylor | CSIRO

Coal contains water which can be defined in various ways, the most common of which are the laboratory determined moisture characteristics of moisture in the analysed sample, air dried/free moisture and equilibrium moisture.  None adequately describe the water that can be removed from ....  read more

 

Coal Preparation Instrumentation Review

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C1005101/07/2001
Author: Terry Bryden, Mike Baldry | Honeywell

This report covers two main areas, firstly technical advances in process instrumentation used in coal preparation and secondly, equipment health monitoring systems applicable to coal preparation plant equipment.

In recent years, automation technology has migrated ....  read more

 

Commissioned Study on Process Control and Instrumentation in Coal Preparation

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C304330/07/1993
Author: Chris J Clarkson, M Gunn, D Wiseman, Chric Wood | JK Tech

The JKTech study group surveyed personnel from coal preparation plants, equipment suppliers, consultants and coal industry policy makers. The survey found that the industry requirement for process control techniques was varied. and related to the level of sophistication, style of operation and ....  read more

 

Control of Hydraulic Distributors to Minimise Feed Bias to Plant Modules

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C405501/07/1998
Author: Peter Holtham, Richard Kelly | JKMRC, University of Queensland

It has been recognised for many years that the performance of 'sputnik' type hydraulic raw coal distributors is extremely poor. A number of modifications have been made to the ....  read more

 

Density/Percent Solids Gauge for Slurries

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C904301/11/2000
Author: Allen Hundley | Offshore Scientific

Offshore Scientific P/L has completed a preliminary study of an acoustic based percent solids / density gauge to be used in coal preparation circuit pipes. This low cost scoping study forms a basis for possible future development of a density gauge that would be low cost, and an alternative to ....  read more

 

Detection of Adverse Operating Conditions in Dense Medium Cyclones by Acoustic Emission Monitoring

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C1406301/12/2006
Author: Steven Spencer, Y Lui, R Bruniges | CSIRO Minerals

A proof-of-concept non-intrusive contact Acoustic Emission (AE) monitoring and soft-sensor analysis system has been developed and tested for passive monitoring of adverse operating conditions in coal washery Dense Medium Cyclones (DMCs). AE sensors externally mounted at feed, mid-body, ....  read more

 

Development of an Online Ash Slurry Analyser

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C1101301/09/2006
Author: Noel Lambert | TUNRA

This report describes a new type of online slurry ash analyser. The device calculates the density of particles in a slurry and makes use of the relationship between particle density and ash content. Particle density is measured by using a commercial online slurry density unit (Micro ....  read more

 

EIS for Monitoring DM Processes Stages 1 and 2

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C904501/11/2002
Author: Shenggen Hu, Bruce Firth | CSIRO Energy Technology

STAGE 1

The objective of this project is to develop an effective and inexpensive Electrical Impedance Spectroscopy (EIS) based technique for on-line monitoring of the operation of DMCs in order to improve timely detection of poor operating conditions and reduce coal ....  read more

 

Evaluation Of Ultra-Dynamics Non-Nuclear Density Gauges

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C1904327/06/2012
Author: Peter Purdon, Laurie Gibson | ALS Coal Technology NSW

The objective was to directly determine the measuring efficiency of a pilot Ultra-Dynamics density gauge. Direct comparisons were obtained by installing the non-nuclear gauge immediately after a standard nuclear gauge within the ACIRL Pilot Plant. That provides a direct comparison of the ....  read more

 

Froth Vision for Conventional and Jameson Cells

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C905101/08/2002
Author: Peter Holtham | JKMRC, University of Qld

This project was designed to build on project C6043, which developed a prototype on-line image analysis instrument to measure coal flotation frothparameters on Microcels at Peak Downs CPP.

The project had four objectives:

  1. To determine the most effective means of using the
 ....  read more

 

Frother Development for Coal Flotation

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C1101101/12/2003
Author: Graeme Jameson, NH Willis | University of Newcastle, TUNRA

This study is concerned with finding a new technique for the determination of a frother's effectiveness in the flotation of coal. A small bench top unit was investigated in an attempt to minimise labour, capital and time costs associated with testing frother effectiveness.

A ....  read more

 

Frother Measurement and Control

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C1305601/06/2006
Author: Glenn Hart, M Attalla, P Morgan | CSIRO

A significant issue within coal washeries is that of over frothing; such problems can occur with pumps, sumps and thickeners when the level of frother in the process water rises too high. The industry has long needed the means to monitor frother levels within the plant water in order to ....  read more

 

Gravity Concentrator Expert Control System

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C2004807/11/2013
Author: Bob Drummond | QCC Resources

Currently there are over approximately 30 gravity concentrators comprising both the Advanced Separation Engineering TBS design and the FLSmidth, Reflux Classifier design installed and operating in Australian CPP's treating raw coal plant fines.

It is well established that both the ....  read more

 

Improved Process Control in Coal Preparation

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C704401/10/2001
Author: Peter Holtham | JKMRC, University of Queensland

The objective of this project was to develop and evaluate new control algorithms more appropriate to the needs of coal preparation plants than existing PI(D) algorithms.

Whiten's Form Generating Controller (FGC) which automates the techniques used in manual control was chosen for ....  read more

 

Improved Ultrasonic Flow Measurements of Coal Slurries

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C1101421/05/2004
Author: Stephen Sullivan, Andrew Meyers, Bob Leach, Michael O'Brien | A&B Mylec, CSIRO Energy Technology

The measurement of volume flows, using portable ultrasonic flow meters, has been a major tool used in the data collection phase during plant audits in the coal industry. The accuracy of these ultrasonic flow measurements have been inconsistent due to various influences, generally related ....  read more

 

Measuring the Plant Performance of Modern Coal Spiral Banks

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C1904601/07/2012
Author: Peter Holtham | Julius Kruttschnitt Mineral Research Centre, The University of Queensland

The objective of ACARP project C19046 was to provide the Australian coal industry with reliable supplier-independent, size-by-size data describing the performance of modern spirals under a range of operating conditions. Data was to be generated for individual spiral starts as well as for the ....  read more

 

On-Conveyor Belt Analysis of Coal

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C505126/03/1998
Author: Brian Sowerby, Cheryl Lim, DA Abernethy, Y Liu, PA Maguire, NG Cutmore, TG Evans, J Ashbury, M Edwards, P Storer | CSIRO Minerals, Mineral Control Instrumentation

A laboratory feasibility study has been carried out on new and advanced neutron and gamma-ray analysis systems for the direct on-conveyor belt analysis of ash in coal without the need for sample by-lines. Such an analysis system could deliver the combined advantages of a direct ....  read more

 

On-Conveyor Belt Analysis of Coal

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C904201/09/2007
Author: Cheryl Lim, David Abernethy, S Rainey, LK Noack | CSIRO Minerals

The present report describes the design and plant-testing of a prototype commercial on-belt ash analyser at the Bengalla CHPP (Muswellbrook, NSW). This analyser uses the Neutron Inelastic Scatter (NIS) and Thermal Neutron Capture (TNC) Analysis (NITA) technique, which has been ....  read more

 

On-line Estimation Of Plant Feed Washability

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C2004901/03/2013
Author: Shenggen Hu, Michael O’Brien and Bruce Firth | CSIRO

Plant feed washability determines the yield achievable for given product ash levels after cleaning. Plant feed washability can vary with time due to variations in feed coal characteristics as coal is sourced from different seams, different locations within a seam, and due to out of seam ....  read more

 

On-Line Moisture Analysis

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C804701/05/2001
Author: Nick Cutmore, DG Miljak, TG Rowlands, D Crnokrak, AJ McEwan, RJ Stevens | CSIRO Minerals

A prototype low frequency microwave analyser has been developed to more accurately monitor thick beds of high moisture coal, using low-cost antennas.

The measurement of the moisture content of materials is currently carried out by manual or automatic sampling of product, followed by ....  read more

 

On-Line Monitoring and Control of DMC Separation Density and Efficiency

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C1305801/03/2007
Author: Shenggen Hu, Bruce Firth | CSIRO Enerty Technology

Separation density (RD50) and efficiency (Ep) are two important performance parameters of  dense medium cyclones (DMCs). These two parameters are not directly measured but calculated from particle density partition curves. Currently partition curves for DMCs are ....  read more

 

Process and Condition Monitoring of Dense Medium Cyclones by Acoustic Emissions

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C1205201/03/2005
Author: Steven Spencer, Y Lui, V Sharp | CSIRO Minerals

A proof-of-concept robust, low-cost, non-intrusive contact Acoustic Emission (AE) monitoring and soft-sensor analysis system has been developed for monitoring of coal washery Dense Medium Cyclone (DMC) process state and machine condition. AE sensors are mounted on the external shell of an ....  read more

 

Process Instrumentation in Coal Preparation Commissioned Study

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C506501/09/1996
Author: Chris Wood | JKTech

The Australian Coal Association Research Program commissioned JKTech to conduct a review of common instruments in Australian coal preparation plants. The objective was to provide information to assist ACARP in directing R&D funds to areas most likely to ....  read more

 

Sampling From High Capacity Screens

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C1904101/10/2011
Author: Bruce Atkinson | CPG Resources - QCC Pty Ltd

Sampling from the discharge of high capacity vibrating screens, especially multi-slope screens, is subject to sampling bias, due to the stratification that occurs on the vibrating screen deck. The stratification in the vibrating bed translates to a stratified falling stream at the discharge ....  read more

 

Sensor & Network Technology

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C1100901/08/2004
Author: Elliot Duff, Barry Jenkins | CSIRO ICT Centre

This scoping study was undertaken to assess various new sensor and network technologies now available for integrated plant systems. It involved a literature review and an investigation of the nature and performance of several combinations of modern sensor and network ....  read more

 

Slurry Subdivision

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C505201/01/1998
Author: Shenggen Hu, Bruce Firth | CSIRO Energy Technology

Large-scale coal preparation plants require the subdivision of solid/liquid slurries at a number of stages. The unit operations are characterised by preferred feedrates of slurry, solids concentration and particle size distributions for optimal efficiencies. The ideal feed subdivision  ....  read more

 

The Intelligent Plant

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C1106901/06/2009
Author: Bruce Firth | CSIRO Energy Technology

The current advances in electronics and smart sensors, coupled with the large amount of information that modern distributed control systems can create, provide opportunities but posses some significant problems.

The potential suite of data measurements could provide plant operators, ....  read more

 

Use of Vibration Signals Recorded from DSP Sensor Technology for On-Line Monitoring of Feed Distribution in a Coal Preparation Plant

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C504925/09/1997
Author: Boulem Boashash, David Hornsby | Queensland University of Technology, ACIRL

This report establishes the goal of proof of concept of using vibration monitoring and signal analysis techniques to detect feed distribution bias or imbalance between parallel dense medium cyclones in coal preparation plants. In the project, a special purpose DSP data acquisition  ....  read more

 

Underground

Health and safety, productivity and environment initiatives.

Recently Completed Projects

C25058Stage One: Self-Drilling Bolt Automation Trial

There are several self drill roof bolt concepts and proto-types that hav...

C24026Study Of Real Time Dry Bulb Temperature And Relative Humidity Monitoring Systems For Use In Underground Mines - Implementation Challenges

As the depth of mines increases, the temperature in the mine workings al...

C24014Distributed Acoustic Conveyor Monitoring

CRC Mining have investigated the application of fibre optic Distributed ...

Underground

Open Cut

Safety, productivity and the right to operate are priorities for open cut mine research.

Recently Completed Projects

C23026Rockfall Hazard Matrix For Risk Reduction In Mine Sites

Rockfall is a major safety hazard in open pit mines which can also have ...

C15045Annotated Bibliography Of Rehabilitation On Coal Mines In New South Wales

DO NOT SELECT GET REPORT

The outcomes for projects...

c19030The Queensland & New South Wales Coal Mine Rehabilitation Research Database: A Strategy For Improvement And Enhancement

DO NOT SELECT GET REPORT

The outcomes for projects...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C23046Economic Effect Of Low Amounts Of Non-Magnetics In The Correct Medium

This project has developed a methodology by which the economic loss ...

C21053Monitoring And Prediction Of Catastrophic Multi-Sloped Screen Failures

Multislope Screen failure has been an ongoing issue since the introducti...

C18041CPP Feed Washability Prediction From Small Top Size Samples

Coal Grain Analysis (CGA) characterisation by size and RD provides a...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C24056Relationship Between Internal Pressure And Coke Strength And Implications For Semi Soft Coking Coals In Blends

The objective of this project was to explore the relationships between t...

C23047Mechanistic Model For The Understanding Of Sole Heated Ovens

A method for modelling sole heated ovens (SHO) based on fundamentals...

C23056Extension Of A Theoretically Based Coke Strength Index To Small Scale Coke Oven Samples And Adhesion Controlled Cokes

Assessment of increasingly subtle changes in coal quality, either potent...

Technical Market Support

Mine Site Greenhouse Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C21065Flame Arresting Mechanisms And Flameproof Device For VAM Mitigation

The overall goal of this project was to study the gas flammability limit...

c21064Development Of A Catalytic Mitigation System For VAM - Stage 3 - 20 Litre Per Min VAM Flow Technical Development Unit

This report describes work undertaken towards the development of a p...

C23052Novel Stone Dust Looping Process For Ventilation Air Methane Abatement - Phase 2

This multi-phase project is concerned with the mitigation of mine site g...

Mine Site Greenhouse Mitigation

Low Emission Coal Use

Step-change technologies aimed at reducing greenhouse gas emissions.

Recently Completed Projects

C17060BGasification Of Australian Coals

Four Australian coals were trialled in the Siemens 5 MWth pilot scale ga...

C17060AOxyfuel Technology For Carbon Capture And Storage Critical Clean Coal Technology - Interim Support

The status of oxy-fuel technology for first-generation plant is indicate...

C18007Review Of Underground Coal Gasification

This report consists of a broad review of underground coal gasification,...

Low Emission Coal Use

Mining And The Community

The relationship between mines and the local community.

Recently Completed Projects

C22029Understanding And Managing Cumulative Impacts Of Coal Mining And Other Land Uses In Regions With Diversified Economies

The coal industry operates in the context of competing land-uses that sh...

C23016Approval And Planning Assessment Of Black Coal Mines In NSW And Qld: A Review Of Economic Assessment Techniques

This reports on issues surrounding economic assessment and analysis ...

C19025Governance Strategies To Manage And Monitor Cumulative Impacts At The Local And Regional Level

ACARP levy contributors should order this report in the normal manner – ...

Mining And The Community

NERDDC

National Energy Research,Development & Demonstration Council (NERDDC) reports - pre 1992.

Recently Completed Projects

1609-C1609Self Heating of Spoil Piles from Open Cut Coal Mines

Self Heating of Spoil Piles from Open Cut Coal Mines

1301-C1301Stress Control Methods for Optimised Development...

Stress Control Methods for Optimised Development and Extraction Operations

0033-C1356Commissioned Report: Australian Thermal Coals...

Commissioned Report: Australian Thermal Coals - An Industry Handbook

NERDDC