Coal Preparation

Dense Medium Cyclone Forum Meeting Report

Coal Preparation » Gravity Separation

Published: October 05Project Number: C15007

Get ReportAuthor: Andrew Vince | Elsa Consulting Group

An ACARP Dense Medium Cyclone (DMC) Forum was held on 26th September, 2005 in which eminent Australian Coal Preparation professionals addressed issues identified by ACARP as important to the future direction of DMC R&D. Major findings were:

  1. Behaviour of DMCs under different operating conditions is poorly understood, particularly at boundaries of normal operation, and large diameter units have poorer efficiencies that may be correctable.
  2. A physical description of how performance is affected by the important variables is required to fully exploit the new larger diameter units becoming available.
  3. Quantity, quality and portability of public domain DMC data is lacking.  That which is reported is frequently insufficient to be useful for building understanding.

The major recommendations are for:

  1. A minimum data set requirement for all ACARP funded DMC R&D projects.
  2. A hybrid mechanistic-fundamental model development strategy consisting of:
    1. Collaboration of multiple operational sites and multiple researchers.
    2. Coordinated/standard approaches.
    3. Fundamental modelling to supplement empirical modelling.
  3. An ACARP CEO influence strategy to promote appropriate and full data set release to the public domain, and for the inclusion of appropriate sampling provisions in full scale plants for the generation of DMC performance data.

To implement these recommendations, the existing ACARP Landmark approach is appropriate if implemented in a collaborative way.  The following recommendations are given for a possible ACARP Collaborative Landmark DMC Project:

  • Operation should be through a Steering Committee.
  • Collaborative smaller projects should be included and focused on small parts of the bigger picture.
  • Data collection must conform to MINIMUM data set requirement and be undertaken by different researchers at different plants working in collaboration.
  • Initial phase of project should last around 12 months, delineate and demonstrate the potential benefit to the industry, identify how the benefit would be achieved, formulate the longer term action plan and develop commitment from the general industry.  A budget of around $200,000 is recommended for the initial phase.
  • Output of the Collaborative Landmark ACARP Project should be a validated hybrid mechanistic-fundamental model for design, operation and diagnostic purposes.
  • The Landmark project should require funding of at least $1-1.5million over 3 years, but this would be better defined at the end of the initial phase.


Health and safety, productivity and environment initiatives.

Recently Completed Projects

C27039True Triaxial Strength Of Coal Measure Rocks And Its Impact On Roadway Stability And Coal Burst Assessment

Rocks in the ground are subject to a range of stresses. The stresses...

C3063Underground Vehicle Design Standards And Statutory Implications

The Australian underground diesel vehicle fleet has evolved since di...

C3064Conveyor Belting And Lagging Shear Characteristics - Drive Drum Slip

The primary aim of this project was to investigate the relationsh...


Open Cut

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

Recently Completed Projects

C26029Geological Controls On Fluorine And Phosphorus In Bowen Basin Coals

Increasing global restrictions on fluorine in product coal prompted ...

C28033Raw Ash To Yield Relationships

Correct outcomes in yield predictions for product ash from coal bore...

C27038Establishing Self-Sustaining And Recognisable Ecological Mine Rehabilitation

In recent years an increasing interest has been placed on mining ope...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C27064Dry Beneficiation Using FGX And X-Ray Sorters

Conventional dry processing methods engage a single beneficiation de...

C26010Multi-Sloped Screening Efficiency With Changing Strokes, Frequencies, Feed Solids And Feed Rates-Pilot Plant Study

Optimising multi-sloped screens is often described as an art and the...

C28059Impact Of Water Quality In Coal Handling And Preparations Plants

The objective of this project was to deliver a concise reference do...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C23052Novel Stone Dust Looping Process For Ventilation Air Methane Abatement

This multi‐phase project is concerned with the mitigation of m...

C27054Optimisation Of A Thermal Flow Reversal Reactor For Ventilation Air Methane Mitigation

Ventilation air methane (VAM) generally accounts for 50-85% of the t...

C28076Selective Absorption Of Methane By Ionic Liquids (SAMIL) - Phase 2 Demonstration In A Packed Bed Reactor

An alternative approach to high temperature oxidation of ventilation...

Mine Site Greenhouse Gas 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

C16027Assessing Housing And Labour Market Impacts Of Mining Developments In Bowen Basin Communities

The focus of this ACARP-funded project has been to identify a number...

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 ...

Mining And The Community


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