Authors: Meiring, S

Open access courtesy of:
Principal Sponsor:

DOI https://doi.org/10.36487/ACG_repo/2115_09

Cite As:
Meiring, S 2021, 'Cake formation: three tailings filtration technologies using pressure', in AB Fourie & D Reid (eds), Paste 2021: 24th International Conference on Paste, Thickened and Filtered Tailings, Australian Centre for Geomechanics, Perth, pp. 91-104, https://doi.org/10.36487/ACG_repo/2115_09

Download citation as:   ris   bibtex   endnote   text   Zotero


Abstract:
The equipment selection for a fine coal tailings dewatering application is filled with numerous challenges and complications. There are known technologies operating in the Australian coal industry such as belt press filters and, recently, solid bowl centrifuges. This paper looks at three known technologies, namely belt press filters, plate and frame filters, and solid bowl centrifuges to dewater thickened fine coal tailings. A comparison of recovery, moisture, reagent addition, solids and volumetric throughput is presented. Some pros and cons of each application will also be provided. Specialised technical information on each application including the major factors that have the greatest dewatering impact on the technologies will be highlighted. Information from an installation from South Africa is shared. The paper assists with the selection process and explains important information that must be brought to light when considering a change from wet disposal to dry disposal. Elements of this paper were previously published in Meiring (2021).

Keywords: fine coal, dewatering, recovery, moisture

References:
Bickert, G 2012, ‘Mechanical dewatering of tailings – an update with case studies’, Proceedings of the 14th Australian Coal Preparation Conference and Exhibition Proceedings, Australian Coal Preparation Society National, Dangar.
Branning, ML & Richardson PF 1986, ‘Factors affecting the dewatering of coal Refuse slurries using twin belt continuous filters’, Proceedings of Coal Prep 86, Industrial Presentations West, Aurora.
Lamb, H 1945, Hydrodynamics, Dover Publications, New York.
Leung, WW-F, 1998, Industrial Centrifugation Technology, McGraw-Hill, New York.
Matheson, D & Eschebach, D 2015, Belt Press Filter Handbook, ACARP report C23040, Australian Coal Research Limited, Brisbane.
Meiring, S, 2015, ‘Thickeners versus centrifuges – a coal tailings technical comparison’, in R Jewell & AB Fourie (eds), Paste 2015: Proceedings of the 18th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 55–65, 
Meiring, S 2021, ‘A comparison of dewatering technologies for fine coal tailings’, Proceedings of the 18th Australian Coal Preparation Conference and Exhibition, Palladian Publications Ltd, Surrey.
Whitton, S, Williams, DJ, Vangsness, T, Delport, T & Zbik, M 2015, ‘Improved dewatering, management and rehabilitation of problematic, clay-rich coal mine tailings’, ACARP report C20047, Australian Coal Research Limited, Brisbane.
Williams, DJ & Whitton, MS 2008, Improving the Control of Product Coal Moisture Based on Unsaturated Soil Mechanics Principles, ACARP report C15061, Australian Coal Research Limited, Brisbane.




© Copyright 2021, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
Please direct any queries or error reports to repository-acg@uwa.edu.au