Ehanced Hydrodynamic Fractionation of Particles. The coal industry, which is a major contributor to the Australian economy, urgently needs a new washability method following its decision to abandon the existing laboratory standard. The existing method relies on the use of heavy organic liquids which are known to be toxic to human health. The 'water-based' approach proposed in this study overcomes the problem of risk to human health, thus benefiting Australian workers, the immediate industry, and ....Ehanced Hydrodynamic Fractionation of Particles. The coal industry, which is a major contributor to the Australian economy, urgently needs a new washability method following its decision to abandon the existing laboratory standard. The existing method relies on the use of heavy organic liquids which are known to be toxic to human health. The 'water-based' approach proposed in this study overcomes the problem of risk to human health, thus benefiting Australian workers, the immediate industry, and wider community. New separation technologies that could benefit the minerals industries and other key industries should follow. The project will also result in the education and training of two postgraduate students, and the advancement of two postdoctoral researchers in this area of industry. Read moreRead less
Optimizing tailings dewatering through interfacial chemistry and particle interactions. This project aims to improve the dewatering behaviour of waste tailings from mineral processing activites. Dewatering and disposal of tailings containing fine particles are serious issues which confront the mineral industry. Effective dewatering of tailings is determined by particle-solution interfacial chemistry and particle interactions. These properties will be manipulated by matching the molecular arch ....Optimizing tailings dewatering through interfacial chemistry and particle interactions. This project aims to improve the dewatering behaviour of waste tailings from mineral processing activites. Dewatering and disposal of tailings containing fine particles are serious issues which confront the mineral industry. Effective dewatering of tailings is determined by particle-solution interfacial chemistry and particle interactions. These properties will be manipulated by matching the molecular architecture and functionality of flocculants to mineral particle surface chemistry. Optimization of tails interfacial chemistry and particle interactions through conventional and non-conventional flocculants will be investigated and electoosmosis will be applied to achieve maximum dewatering behaviour.The scientific and environmental outcomes will be beneficial to all stakeholders.Read moreRead less
The development of novel geopolymers incorporating calcium and cellulosic material. Geopolymer technology transforms waste aluminosilicate materials into commercially viable products, which possess superior physical and chemical properties compared to ordinary concrete. These high-tech materials have novel acid and fire resistance applications, e.g. in construction and for the coating of optical fibres. Understanding the chemical relationship between geopolymers and other cementitious materials ....The development of novel geopolymers incorporating calcium and cellulosic material. Geopolymer technology transforms waste aluminosilicate materials into commercially viable products, which possess superior physical and chemical properties compared to ordinary concrete. These high-tech materials have novel acid and fire resistance applications, e.g. in construction and for the coating of optical fibres. Understanding the chemical relationship between geopolymers and other cementitious materials is pivotal to further advances in inorganic polymers. This project uses surface reactivity, spectroscopy, electronmicroscopy and electron diffraction to determine the role of calcium and cellulosic additives in the phase composition, microstructure and properties of geopolymers. Therefore, the factors distinguishing geopolymers from alkali-activated cement and ordinary concrete are identified.Read moreRead less
Use of Parallel Inclined Channels to Enhance Foam Drainage in Ion Flotation. This study is concerned with increasing the rates of foam drainage in flotation processes. The findings will have direct benefit in the field of ion flotation, and will be highly relevant to the flotation of high value minerals worth tens of billions of dollars annually. The Reflux Classifier, a device that employs the Boycott Effect to achieve a significant increase in the effective area of the vessel, will be used. Th ....Use of Parallel Inclined Channels to Enhance Foam Drainage in Ion Flotation. This study is concerned with increasing the rates of foam drainage in flotation processes. The findings will have direct benefit in the field of ion flotation, and will be highly relevant to the flotation of high value minerals worth tens of billions of dollars annually. The Reflux Classifier, a device that employs the Boycott Effect to achieve a significant increase in the effective area of the vessel, will be used. This device has already attracted three national awards in the area of gravity concentration in mineral processing. The study is ideal for training new researchers, especially at the PhD level, given the importance of the field to Australia. Read moreRead less
A fundamental study of the simultaneous gold dissolution during the alkaline oxidation of sulfide containing refractory gold ores and concentrates. The gold industry is Australia's second largest export earner and therefore is immensely important to the Australian economy. The proposed project aims to develop an environmentally acceptable process for treating gold containing sulfidic ores and concentrates that are not amenable to conventional cyanidation. This would provide an enormous benefit t ....A fundamental study of the simultaneous gold dissolution during the alkaline oxidation of sulfide containing refractory gold ores and concentrates. The gold industry is Australia's second largest export earner and therefore is immensely important to the Australian economy. The proposed project aims to develop an environmentally acceptable process for treating gold containing sulfidic ores and concentrates that are not amenable to conventional cyanidation. This would provide an enormous benefit to both the Australian gold industry and the Australian environment. A successful outcome in the research project would also lead to export earnings emanating from technology transfer and enhance Australia's reputation for high quality research and academic endeavours.Read moreRead less
The evolution of effective stress in sedimenting clayey slurries. Activities such as water treatment, mining and dredging produce enormous volumes of semi-solid waste annually. The safe and environmentally responsible management of these wastes is costly, consumes vast quantities of water, and sterilises large areas of land. We will address these issues through understanding and manipulating the interaction between individual particles in these slurries to produce desired engineering outcomes. T ....The evolution of effective stress in sedimenting clayey slurries. Activities such as water treatment, mining and dredging produce enormous volumes of semi-solid waste annually. The safe and environmentally responsible management of these wastes is costly, consumes vast quantities of water, and sterilises large areas of land. We will address these issues through understanding and manipulating the interaction between individual particles in these slurries to produce desired engineering outcomes. This will be done by developing a laboratory testing column in which the gain in strength and rigidity of a settling slurry are fully characterised, enabling an improvement in design of safe and economical impoundment structures for these waste materials.
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Special Research Initiatives - Grant ID: SR0354672
Funder
Australian Research Council
Funding Amount
$20,000.00
Summary
ARC Network in Mineral Processing, Extraction and Refining. The Network aims to develop long-term, collaborative research and training links between world-class researchers and research centres in mineral processing, extraction and refining. The goal is to ensure that Australia's major export industry is sustainable, environmentally acceptable and technically at the cutting edge.
Networking key researchers with complementary skills and expertise will enhance research quality, encourage a hol ....ARC Network in Mineral Processing, Extraction and Refining. The Network aims to develop long-term, collaborative research and training links between world-class researchers and research centres in mineral processing, extraction and refining. The goal is to ensure that Australia's major export industry is sustainable, environmentally acceptable and technically at the cutting edge.
Networking key researchers with complementary skills and expertise will enhance research quality, encourage a holistic approach to problem solving and support researchers to tackle big challenges, beyond their usual scope, that will transform the industry. The outcomes will be greater international competitiveness, better resource utilisation, and the incubation of new research leaders, enhancing Australia's minerals R&D infrastructure.Read moreRead less
Control Of Aggregate Structure, Settling And Dewatering In Mineral Tailings Processing. Modification of aggregate structures in mineral processing will lead to improved dewatering in tailings operations. In mine site rehabilitation and tailings utilisation, technology developed in this project may save not only millions of dollars in more efficient processing and tailing deposition but also help to better reuse our limited national water resources.
Particle Transport and Separation in High Aspect Ratio Inclined Channels. This project will be of benefit to the Australian coal and mineral processing industries, worth tens of billions of dollars to the Australian economy each year. The objective is to establish new options for the processing of particles as large as 50mm, and smaller than 50 microns in size, and hence significantly extend the operating size range of the Reflux Classifier. The development of new resources, especially those of ....Particle Transport and Separation in High Aspect Ratio Inclined Channels. This project will be of benefit to the Australian coal and mineral processing industries, worth tens of billions of dollars to the Australian economy each year. The objective is to establish new options for the processing of particles as large as 50mm, and smaller than 50 microns in size, and hence significantly extend the operating size range of the Reflux Classifier. The development of new resources, especially those of poorer grade, requires more effective separation technology. Success in this project will significantly benefit the end users of the technology and also contribute to Australia's Mining Services industry.Read moreRead less
Adsorption and recovery of gold thiosulfate using nanoporous carbon. The gold industry is a major export earner for both Australia and the United States. This collaborative project aims to develop an environmentally acceptable, cost effective process for the recovery of gold from thiosulfate leachate. Development of this process will remove one of the barriers to the acceptance of thiosulfate leaching over conventional cyanide extraction, leading to substantial benefits to the gold industry and ....Adsorption and recovery of gold thiosulfate using nanoporous carbon. The gold industry is a major export earner for both Australia and the United States. This collaborative project aims to develop an environmentally acceptable, cost effective process for the recovery of gold from thiosulfate leachate. Development of this process will remove one of the barriers to the acceptance of thiosulfate leaching over conventional cyanide extraction, leading to substantial benefits to the gold industry and the environment. A successful outcome in the research project would also lead to export earnings resulting from technology transfer and an enhanced reputation for high quality research.Read moreRead less