Research Output per year
Personal profile
Biography
I obtained my Bachelor from the Universiti Sains Malaysia and a PhD from the University of Melbourne in 1989. I have over 110 journal publications and more than 50 refereed conference publications. I received more than 2000 citations and a H-index of 24. Some my research works and data were reproduced in two very well-regarded chemical Engineering Textbook; Rheology and Structure of Complex Fluids (1999) and Colloidal Suspension Rheology (2012).
Roles and responsibilities
I control the suspension rheology by employing surface chemistry tools to regulate the surface or interparticle forces in slurry processing.
Problems encountered and solved:
I) ability to solve gelation problem in the production of ammonium phosphate slurries
ii) ability to reduce the pumping cost of mineral/tailings slurries with low cost composite additives
iii) ability to enhance the performance clay/mineral separation in iron ore slurries.
Problems encountered and solved:
I) ability to solve gelation problem in the production of ammonium phosphate slurries
ii) ability to reduce the pumping cost of mineral/tailings slurries with low cost composite additives
iii) ability to enhance the performance clay/mineral separation in iron ore slurries.
Future research
I) Clay gel, surface chemistry, microstructure and ageing rheological behaviour
ii) Hydrometallurgical methods of enhancing rare Earth Metal extraction.
iii) Sequential layering of polyelectrolytes on ceramic oxide particles in suspension and its rheological behaviour.
iv) Iron oxide separation methods and purity
ii) Hydrometallurgical methods of enhancing rare Earth Metal extraction.
iii) Sequential layering of polyelectrolytes on ceramic oxide particles in suspension and its rheological behaviour.
iv) Iron oxide separation methods and purity
Funding overview
I have received ARC Linkage, Discovery and LIEF grants over the past 20 years. I have also received funding from industry such as OSD pty ltd, Active Minerals Inc, QNI, WMC Fertilizers, Zinifex Century and a few others
Current projects
I) Rare Earth Extraction
ii) Iron ore processing
iii) Suspension rheology
ii) Iron ore processing
iii) Suspension rheology
Industrial relevance
My research generates new fundamental and applied knowledge that can be used to solve industrial suspension problems in rheology, thickening and consolidation, flotation and other hydrometallurgical processes. Clay suspension processing problems are of particular interest to me. Over the past 10 years, I have conducted extensive research on surface chemistry, rheology, microstructure and ageing properties of a range of clays such as kaolin, bentonite, sodium and calcium montmorillonite and Laponite.
Teaching overview
I) Reaction Engineering/Design
ii) Particle Mechanics and Solids Handling
iii) Particle Technology
iV) Mass Transfer Operation/Process modules
v) Thermodynamics
ii) Particle Mechanics and Solids Handling
iii) Particle Technology
iV) Mass Transfer Operation/Process modules
v) Thermodynamics
Research
Surface Chemistry/force and Rheology of Suspension: Control of suspension processing behaviour;
Microstructure and Rheology of clay and oxide suspensions;
Ageing and Microstructure of Swelling Clay Suspensions - Thickening of low density suspensions;
Coal and biochar slurry fuel preparation;
Experiment and Population balance modelling of flocculation and flocs fragmentation.
Microstructure and Rheology of clay and oxide suspensions;
Ageing and Microstructure of Swelling Clay Suspensions - Thickening of low density suspensions;
Coal and biochar slurry fuel preparation;
Experiment and Population balance modelling of flocculation and flocs fragmentation.
Languages
English
Bahasa and Chinese dialect
Bahasa and Chinese dialect
Keywords
- Optimising fertiliser slurries—monoammonium phosphate (MAP) and diammonium phosphate (DAP), processing in flow reactors via surface chemistry controls
- Optimising clay and mineral suspension processing via surface force control
- Surface chemistry and rheology of emulsions and dispersions
- Rheometry and slip flow
- Clay and ceramic slurries zeta potential and yield stress
- Dewatering and thickening of slimes
- Particle network strength enhancement
- Slip casting
Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.
- 5 Similar Profiles
Yield stress
Chemical Compounds
Zeta potential
Chemical Compounds
Suspensions
Chemical Compounds
Dispersions
Chemical Compounds
Rheology
Chemical Compounds
Slurries
Engineering & Materials Science
Aluminum Oxide
Chemical Compounds
Kaolin
Chemical Compounds
Network
Recent external collaboration on country level. Dive into details by clicking on the dots.
Research Output 1995 2019
Microstructure and rheology of bentonite slurries containing multiple-charge phosphate-based additives
Du, M., Liu, J., Clode, P. & Leong, Y. K., 1 Mar 2019, In : Applied Clay Science. 169, p. 120-128 9 p.Research output: Contribution to journal › Article
Bentonite
Slurries
bentonite
rheology
Rheology
3
Citations
(Scopus)
Green lightweight lead-free Gd2O3/epoxy nanocomposites with outstanding X-ray attenuation performance
La, L. B. T., Leatherday, C., Leong, Y. K., Watts, H. P. & Zhang, L. C., 28 Jul 2018, In : Composites Science and Technology. 163, p. 89-95 7 p.Research output: Contribution to journal › Article
Nanocomposites
Lead
X rays
Composite materials
Agglomeration
1
Citation
(Scopus)
High shear breakage of compact polyelectrolyte-bridged flocs: A method for obtaining model-independent breakage rate function data
Au, P. I., Liu, J., Zhang, W., Sun, C. & Leong, Y. K., 5 Sep 2018, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 552, p. 48-58 11 p.Research output: Contribution to journal › Article
Polyelectrolytes
Particle size analysis
Distribution functions
fragmentation
shear
1
Citation
(Scopus)
Microstructure of Sodium Montmorillonite Gels with Long Aging Time Scale
Leong, Y. K., Du, M., Au, P. I., Clode, P. & Liu, J., 21 Aug 2018, In : Langmuir. 34, 33, p. 9673-9682 10 p.Research output: Contribution to journal › Article
Bentonite
montmorillonite
Platelets
Clay minerals
platelets
Spherical α-Al2O3 suspensions layered sequentially with anionic and cationic polyelectrolytes: Chemistry, rheology and TEM images
Zhang, W., Au, P. I., Zhang, X., Fan, H., Sun, C., Saunders, M. & Leong, Y. K., 1 Oct 2018, In : Powder Technology. 338, p. 716-724 9 p.Research output: Contribution to journal › Article
Polyetherimides
Polyelectrolytes
Rheology
Suspensions
Transmission electron microscopy
Projects 2010 2012
- 7 Finished
Joint Effort in Developing a National Centre of Excellence in Gas Processing & Utilisation
Zhang, D., May, E., Rufford, T., Yang, H., Liu, Y., Chua, H., Leong, Y., Chan, Y., Bussemaker, M., Tong, C., Zhu, J., Rudolph, V., Diniz da Costa, J., Steel, K., Shukla, P. & Wei Zhou, W.
University of Western Australia
1/01/11 → 31/12/11
Project: Research
Integrated Magnetic Resonance Gas and Oil Analyser
Johns, M., May, E., St Pierre, T., Leong, Y., Boxall, J., Evans, B., Arns, C., Zhu, J., Grice, K. & Wu, J.
Curtin University of Technology
1/01/11 → 31/12/11
Project: Research
Integrated Magnetic Resonance Gas and Oil Analyser
Johns, M., May, E., St Pierre, T., Leong, Y., Boxall, J., Evans, B., Arns, C., Zhu, J., Grice, K. & Wu, J.
Qingdao Institute of Bioenergy & Bioprocessing Technology
1/01/11 → 31/12/11
Project: Research
Integrated Magnetic Resonance Gas and Oil Analyser
Johns, M., May, E., St Pierre, T., Leong, Y., Boxall, J., Evans, B., Arns, C., Zhu, J., Grice, K. & Wu, J.
1/01/11 → 31/12/11
Project: Research
Integrated Magnetic Resonance Gas and Oil Analyser
Johns, M., May, E., St Pierre, T., Leong, Y., Boxall, J., Evans, B., Arns, C., Zhu, J., Grice, K. & Wu, J.
1/01/11 → 31/12/11
Project: Research