Directory of
Higher degree by research students

George Abaka-Wood

School of Engineering

Telephone: 25695

Email: george.abaka-wood@mymail.unisa.edu.au


About me








Thesis
































Beneficiation of rare earth elements minerals from tailings leach residue and complex low grade ores

Rare earth elements (REE) are highly valued for their unique magnetic, optical and catalytic properties, making them essential for a number of high technology industries (hybrid cars, wind turbines, fuel cells, electronics, medical and defence technologies and metallurgy). Bastnasite, monazite, xenotime, loparite, allanite and apatite are REE minerals that have been exploited over the years for REE. Ore deposits prospected in South Australia have been identified to be rich in copper, gold, silver and other metals with sub-economic (< 1%) total rare earth oxide grade. To date however, no economically viable processing method exists for recovering REE from such deposits which are mineralogically and chemically complex.

The principal objective of this project is to undertake basic and applied research and develop a cost-effective processing route for the beneficiation of REE minerals from TLR and low grade ores of complex mineralogy. This will include physico-chemical characterization of selected REE-bearing single minerals, TLR and complex low grade ores. Valuable REE minerals in the selected TLR and low grade ores will be separated using optimized physical separation (magnetic, electrostatic and multi-gravity) and froth flotation process. The expected outcomes of this research will lead to cost-effective processing route to concentrate REE minerals from low grade ores, thus creating a new value-added product for the minerals industry.



Supervisors: Prof. William Skinner, Prof. Jonas Addai-Mensah and Assoc. Prof. Max Zannin 


Research publications


Journals

1. Abaka-Wood, G. B., Addai-Mensah, J., & Skinner, W. 2017. A study of flotation characteristics of monazite, hematite, and quartz using anionic collectors. International Journal of Mineral Processing, 158, 55-62. doi:http://dx.doi.org/10.1016/j.minpro.2016.11.012

2. Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2017. Selective flotation of rare earth oxides from hematite and quartz mixtures using oleic acid as a collector. International Journal of Mineral Processing, 169, pp.60-69.doi: https://doi.org/10.1016/j.minpro.2017.10.002




Conference

1. Abaka-Wood, G. B., Addai-Mensah, J., and Skinner, W. 2016. Physicochemical Characterisation of Monazite, Hematite, and Quartz Minerals for Flotation. 30th Australian Colloid & Surface Science Student Conference 2016 (ACSSSC), February, 1-4, 2016, Kioloa Coastal Campus, NSW, Australia.

2. Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2016. Magnetic separation of monazite from mixed minerals. CHEMECA 2016: Chemical Engineering-Regeneration, Recovery and Reinvention, Adelaide, Australia, September, 25-28, 2016, p.596-604.

3.Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2016. Froth flotation of monazite from mixed minerals. CHEMECA 2016: Chemical Engineering-Regeneration, Recovery and Reinvention, Adelaide, Australia, September, 25-28, 2016, p.605-612.

4. Abaka-Wood, G. B., Addai-Mensah, J. and Skinner, W. 2016, Review of Flotation and Physical Separation of Rare Earth Element Minerals, 4th UMaT Biennial International Mining and Mineral Conference, Tarkwa, Ghana, August 3-6, 2016, pp. MR 55-62.

5. Abaka-Wood, G. B., Addai-Mensah, J. and Skinner, W. 2016, Physicochemical Characterisation of Monazite, Hematite, and Quartz Minerals for Flotation, 4th UMaT Biennial International Mining and Mineral Conference, Tarkwa, Ghana, August 3-6, 2016, pp. MR 67-73. 

6. Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2017. Beneficiation of monazite from mixed minerals using electrostatic separation. Physical Separation 2017, Falmouth, Cornwall, UK, June 15-16, 2017.

7.Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2017. Separation of monazite from mixed minerals using gravity separation. Physical Separation 2017, Falmouth, Cornwall, UK, June 15-16, 2017.

8. Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2017. A study of flotation kinetics of monazite, hematite, and quartz using hydroxamic acid as a collector. CHEMECA 2017: Innovation Through Science & Engineering, Melbourne, Australia, 23-26 July 2017.

9.Abaka-Wood, G.B., Addai-Mensah, J. and Skinner, W., 2017. The depressant characteristics of sodium silicate and starch on hematite and quartz in monazite flotation using hydroxamic acid as a collector. CHEMECA 2017: Innovation Through Science & Engineering, Melbourne, Australia, 23-26 July 2017.


Associations


Canadian Institute of Mining, Metallurgy and Petroleum