ACARP ACARP ACARP ACARP
Coal Preparation

Comprehensive Flotation Model Using CGA Particle Surface Composition

Coal Preparation » Fine Coal

Published: October 19Project Number: C27033

Get ReportAuthor: Cathy Evans, Bruce Atkinson | University of Queensland, Basacon Services

The aim of this project was to adapt existing particle based flotation circuit simulation architecture, developed by the Julius Kruttschnitt Mineral Research Centre for metalliferous flotation circuits, as a tool that can be applied in fine coal flotation to forecast the likely impact changes in the feed particle characteristics will have on the yield and quality of the flotation product. This architecture uses data generated from the Coal Grain Analysis (CGA) methodology.

The ability to quickly and adequately respond to changing plant feed conditions remains a key component for improving the overall coal recovery at a specified product quality. In the flotation of fine coal, the surface chemistry of the particles is important in establishing the proportion of flotation recoverable coal.

CGA images obtained from full scale flotation circuits under projects C24045 and C25019 were re-analysed to quantify the particle perimeter composition, with the aim that this information would be correlated to the measured flotation rates of different particle grain types (archetypes).

The particle based architecture was applied to allow the distribution of different particle archetypes, per size class, to be tracked throughout a circuit during simulations.

The benefit of this approach to the industry is that it allows coal flotation losses to be tracked at the particle level and provides a means by which the inter-dependencies of coal preparation-related activities may be integrated in the future to optimise value in an all-inclusive manner. The tool will enable coal industry participants to make greater use of CGA data to monitor and quantify the influence of sub-optimal feed conditions. It also provides another means by which benefits from sensor data can be transferred to and accepted by the coal industry.

This research has shown that the particle surface composition approach, which was developed in base metal flotation can be applied to data obtained from CGA to simulate coal flotation. The CGA measurements can be processed to provide the required particle composition data (both surface and bulk).

The results for the project were mixed. For four sites, the correlation between simulated full-scale, and actual full scale performance were excellent. For three sites, there were substantial differences between the measured flotation behaviour and the results of the simulations in terms of both yield and composition of the concentrate. For the remaining two sites, concentrate composition was well predicted, but the simulated yields did not agree with the estimate of the 'measured' plant yield.  The reasons for these mixed results are detailed within the report.

Underground

Health and safety, productivity and environment initiatives.

Underground

Open Cut

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

Recently Completed Projects

C19024Establishing Ecologically Sustainable Mine Water Release Criteria In Seasonally Flowing Streams

Extreme rainfall conditions in the Fitzroy Catchment over an approxi...

C25030Coal Mine Open Pit Final Void Closure And Relinquishment - Addressing Uncertainty In Coal Mine Environmental Planning

This report addresses uncertainties faced by coal mine operators whe...

C27046Estimation Of True Deformation Vector From Slope Radar Monitoring

Slope deformation radar monitors are now widely used in open cut coa...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C27004Improving Coal Flotation With Oscillatory Air Supply

This report provides detailed information on coal flotation with os...

C25018Improving Solids Recovery And Moisture Reduction In Ultrafine Coal Dewatering

This report provides detailed information on fine coal dewatering in...

C27028Lab Froth Flotation Testing Guide With Coal Quality

Correct outcomes from laboratory froth flotation testing in coal bor...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C26039Nanoporosity In Cokes: Their Origin, Control And Influence On CO2 Reactivity

This project using the outcomes of previous project C24060, examine...

C28063A Comprehensive Technical Review Of High-Efficiency Low-Emission (HELE) Pulverised Coal Combustion Technologies For Power Generation

Research and development has been undertaken worldwide to realise co...

C28064Carbon Structure Transformation During Coking Of Australian Coking Coals: Better Understanding The Coke Formation

Carbon structures of coke that are formed during the plastic layer a...

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

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...

C26004CFD Modelling Of Reverse Thermal Oxidisers For VAM Abatement - CFD Modelling Of Fixed-Bed RTO Devices

The project is part of a larger multi‐phase program of study a...

C27058Technological Assessment Of A Recycle Reactor For VAM Abatement

Underground coal mining emits high volumes of methane, diluted in ve...

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

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