The recovery of Cu from chalcopyrite-pyrite containing concentrates, ores and tailings. Chalcopyrite, a major source of Cu, is often associated in ores with the valueless mineral pyrite. The development of more efficient methods for the retrieval of the Cu is of considerable economic importance to Australian minerals processing companies. We aim to develop methodologies allowing the more efficient :
- separation of chalcopyrite and pyrite;
- leaching of Cu from ores and tailing in a heap leach ....The recovery of Cu from chalcopyrite-pyrite containing concentrates, ores and tailings. Chalcopyrite, a major source of Cu, is often associated in ores with the valueless mineral pyrite. The development of more efficient methods for the retrieval of the Cu is of considerable economic importance to Australian minerals processing companies. We aim to develop methodologies allowing the more efficient :
- separation of chalcopyrite and pyrite;
- leaching of Cu from ores and tailing in a heap leach environment and
- leaching of Cu in a concentrated chalcopyrite-pyrite reactor environment.
These aims will be achieved via an integrated surface-solution speciation approach allowing the manipulation of surface properties.
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Polymers at Mineral Interfaces. Polymers are used widely in the mineral processing industry to alter mineral surfaces, often selectively. In spite of this, there remains a gap in our understanding of how polymers interact with mineral surfaces and how their surface structure affects the mineral surface properties. The aim of this project is to fill this gap by performing fundamental research on adsorbed polymer structure and properties, coupled with applied research on real mineral ores from a ....Polymers at Mineral Interfaces. Polymers are used widely in the mineral processing industry to alter mineral surfaces, often selectively. In spite of this, there remains a gap in our understanding of how polymers interact with mineral surfaces and how their surface structure affects the mineral surface properties. The aim of this project is to fill this gap by performing fundamental research on adsorbed polymer structure and properties, coupled with applied research on real mineral ores from a number of mineral companies. The combination of fundamental and applied research makes this project unique in the study of polymers at mineral interfaces, and will enable us to solve real processing problems through a rational choice of polymers for a given application.Read moreRead less
Polymers in the Depression, Aggregation and Dispersion of Particles in the Mineral Industry. The aim of this project is to use a generic approach to the selection of the best-suited polymer for specific applications such as in the depression, aggregation and dispersion of particles in the mineral industry. A "tool box" of particular tests will be developed based on key chemical structure-solid surface activity relationships between the polymer and the host solid surface in each application consi ....Polymers in the Depression, Aggregation and Dispersion of Particles in the Mineral Industry. The aim of this project is to use a generic approach to the selection of the best-suited polymer for specific applications such as in the depression, aggregation and dispersion of particles in the mineral industry. A "tool box" of particular tests will be developed based on key chemical structure-solid surface activity relationships between the polymer and the host solid surface in each application considered. Potential process improvements leading to improved flotation grades, increased fine particle recovery, increased slurry throughput in pipelines and decrease in reagent dosage will result.Read moreRead less
Reducing the deleterious impacts of clay particle interactions with valuable minerals in copper and gold processing. This project seeks to understand the rheological behaviour of clay minerals and the effect of the viscosity caused by clay minerals on gas dispersion, the transport of network structures and the locking of the structures in the froth in mineral flotation. Novel methods will be developed to improve flotation separation by reducing the viscosity.
Surface engineering of oriented nano-layers for performance control. This research project will deliver knowledge on how to graft oriented, self assembled films from a surface, develop structure-property relationships at a nano-scale, develop a means to control these properties and develop characterization techniques at nano-scales. This research project, if successful, will deliver the ability to tailor the properties of a surface in a manner and over a range of properties that is not even cont ....Surface engineering of oriented nano-layers for performance control. This research project will deliver knowledge on how to graft oriented, self assembled films from a surface, develop structure-property relationships at a nano-scale, develop a means to control these properties and develop characterization techniques at nano-scales. This research project, if successful, will deliver the ability to tailor the properties of a surface in a manner and over a range of properties that is not even contemplated today.
In addition to the scientific benefits, there are also immediate commercial applications in Australia and worldwide for ophthalmic products (e.g. anti-fog and easy to clean lenses), if the balance of properties can be obtained.
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Interfacial Studies of Nanoparticulate Dendrimers for Improved BioPharmaceutical Application. Dendrimers are a novel class of nanoparticles with exciting potential as pharmaceuticals for the prevention of major disease states, e.g. viral and cancer. A colloid and interfacial chemistry approach will be employed to develop an understanding of the mechanisms for the solution to cell transport processes and for optimisation of formulation strategies for delivery vehicles. Significant advances in t ....Interfacial Studies of Nanoparticulate Dendrimers for Improved BioPharmaceutical Application. Dendrimers are a novel class of nanoparticles with exciting potential as pharmaceuticals for the prevention of major disease states, e.g. viral and cancer. A colloid and interfacial chemistry approach will be employed to develop an understanding of the mechanisms for the solution to cell transport processes and for optimisation of formulation strategies for delivery vehicles. Significant advances in the development of novel pharmaceutical products will result, with significant social and economic benefits nationally and internationally.Read moreRead less
A new damage model for rock burst in hard rocks during deep mining. This project seeks to develop a new model to predict incipient rock burst in deep mines. Violent sudden energy released during dynamic brittle failure of rocks can kill people and cause serious damages to mining infrastructures. The project aims to investigate formation of micro-fractures on the brittle shear zones during dynamic brittle failure of pristine rocks with a unique experimental methodology under high-pressure-tempera ....A new damage model for rock burst in hard rocks during deep mining. This project seeks to develop a new model to predict incipient rock burst in deep mines. Violent sudden energy released during dynamic brittle failure of rocks can kill people and cause serious damages to mining infrastructures. The project aims to investigate formation of micro-fractures on the brittle shear zones during dynamic brittle failure of pristine rocks with a unique experimental methodology under high-pressure-temperature condition. It is anticipated that a new micromechanics-based damage model for brittle rocks will be developed from this. Implementation of the new coupled thermo-mechanical damage model into a finite element should result in realistic simulation of deep mining operations to identify rock-burst prone areas and allow mining managers to avoid potential hazards.Read moreRead less
From high school to higher education: Gendered pathways in information, communication and computer technology education. Serious gender-based disparities exist in participation in the Information, Communication, and Computing Technologies (ICCT) field, in both higher education and industry, with a 2004 review of Australian university participation rates identifying women as an equity target group in this field. A multi-method, multi-stage project has been design to identify the processes that le ....From high school to higher education: Gendered pathways in information, communication and computer technology education. Serious gender-based disparities exist in participation in the Information, Communication, and Computing Technologies (ICCT) field, in both higher education and industry, with a 2004 review of Australian university participation rates identifying women as an equity target group in this field. A multi-method, multi-stage project has been design to identify the processes that lead to this gender gap. Specifically, the project will focus on students' experiences and decisions at secondary school in three states to ascertain why so few girls choose to enter university-level ICCT courses, and what strategies could be implemented in schools to remedy this problem. Read moreRead less
Meals on Wheels: building towards a new social experiment for our times. This project contributes directly to the National Research Priority, promoting and maintaining good health: ageing well, ageing productively, through developing evidence-based knowledge on which to build future volunteer business models. With the rapid ageing of the Australian population, it is imperative that volunteer-based organisations, such as Meals on Wheels, innovate to continue to deliver essential community service ....Meals on Wheels: building towards a new social experiment for our times. This project contributes directly to the National Research Priority, promoting and maintaining good health: ageing well, ageing productively, through developing evidence-based knowledge on which to build future volunteer business models. With the rapid ageing of the Australian population, it is imperative that volunteer-based organisations, such as Meals on Wheels, innovate to continue to deliver essential community services in a sustainable and cost-effective way. Meals on Wheels is integral within community care for frail, older people and those with disabilities, keeping people in their own homes and out of institutional care. Using national and international examples, the research has the potential to be adopted by the broad community services sector in Australia.Read moreRead less
Solution and surface speciation evolution during chalcopyrite leaching. This project will contribute to the development of a more effective industrial leach process for chalcopyrite, the source of more than 50 per cent of the world's copper, and will lead to substantially reduced processing costs and environmental impact, due to removal of the existing smelting step. In addition, the processing of currently uneconomic low grade ores would become economic.