Optimising Froth Zone Performance in Mineral Flotation. Froth flotation is the most widely applied technique for the selective separation of valuable mineral from gangue mineral particles. This project aims to optimize the selective separation of valuable minerals from gangue minerals within the froth zone of flotation. This project has very high national significance as deficiencies in the froth zone performance of industrial flotation plants, leads to a significant loss of valuable mineral f ....Optimising Froth Zone Performance in Mineral Flotation. Froth flotation is the most widely applied technique for the selective separation of valuable mineral from gangue mineral particles. This project aims to optimize the selective separation of valuable minerals from gangue minerals within the froth zone of flotation. This project has very high national significance as deficiencies in the froth zone performance of industrial flotation plants, leads to a significant loss of valuable mineral from mineral concentrates, as well as a reduction in concentrate grade and quality. An expected outcome of this project will be a series of new tools and methodologies to optimize froth zone performance, which will have industry wide application.Read moreRead less
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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Anomalous interfacial air-bubble dynamics: the importance of electrokinetic effects in thin film drainage. Air bubbles play important roles in numerous systems including plastics and paper recycling, water treatment and mineral separation processes, foodstuffs, beverages, cosmetics, cleaning products, fire retardants, and natural systems such as rivers, oceans and biological fluids. The properties and behaviour of these systems and processes depend on how air bubbles in water interact with each ....Anomalous interfacial air-bubble dynamics: the importance of electrokinetic effects in thin film drainage. Air bubbles play important roles in numerous systems including plastics and paper recycling, water treatment and mineral separation processes, foodstuffs, beverages, cosmetics, cleaning products, fire retardants, and natural systems such as rivers, oceans and biological fluids. The properties and behaviour of these systems and processes depend on how air bubbles in water interact with each other, and/or with other materials. Currently our understanding of the bubble interactions is incomplete. The improved understanding gained from this research project will lead to better ability to control the properties of systems and processes such as those listed above.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0345760
Funder
Australian Research Council
Funding Amount
$210,000.00
Summary
Nanoscale Interaction Forces in Particulate and Molecular Systems. We seek to establish a world-class facility for the measurement of nanoscale interaction forces. The ability to measure forces between particles, polymers, emulsion droplets, bubbles, proteins and powders will augment our research capabilities in minerals and material processing, thin film technology, structured surfaces, and in molecular and bio-technology (eg. proteins, DNA, cells, bone, bio-implants). A Molecular Force Probe ....Nanoscale Interaction Forces in Particulate and Molecular Systems. We seek to establish a world-class facility for the measurement of nanoscale interaction forces. The ability to measure forces between particles, polymers, emulsion droplets, bubbles, proteins and powders will augment our research capabilities in minerals and material processing, thin film technology, structured surfaces, and in molecular and bio-technology (eg. proteins, DNA, cells, bone, bio-implants). A Molecular Force Probe (Asylum Research) instrument will allow precise and flexible force measurements on the nano-metre scale. The proposed multi-disciplinary facility will advance research in the areas of engineering, chemistry, pharmacology and biotechnology.
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Molecular forces: in colloid science, complex fluids and living matter. The physical chemists; and the biologists, soil scientists and engineers who need them, have lived in parallel universes. Despite claims for relevance, the standard text book chemistry is unsatisfactory in a myriad industrial and basic applications. Identification of where theories went wrong has been made. The repair of current theories will provide better predictive experimental design principles that get to real world sol ....Molecular forces: in colloid science, complex fluids and living matter. The physical chemists; and the biologists, soil scientists and engineers who need them, have lived in parallel universes. Despite claims for relevance, the standard text book chemistry is unsatisfactory in a myriad industrial and basic applications. Identification of where theories went wrong has been made. The repair of current theories will provide better predictive experimental design principles that get to real world solutions faster. There is a genuine paradigm shift in progress. Redressing deficiencies of present theories will provide a better intuition for scientists who need a predictive intuition from physical chemistry for optimal experimental design.
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New metal-molecule binding motifs for self-assembled monolayers and nanodevices. The goal of this research is to investigate technologically interesting electronic materials using new molecular assemblies. We explore their application in some fundamental components of molecular electronic systems and anticipate that knowledge gained from our investigations will have significant impact on the field of nanotechnology, especially in the area of molecular electronics. Our basic research will contrib ....New metal-molecule binding motifs for self-assembled monolayers and nanodevices. The goal of this research is to investigate technologically interesting electronic materials using new molecular assemblies. We explore their application in some fundamental components of molecular electronic systems and anticipate that knowledge gained from our investigations will have significant impact on the field of nanotechnology, especially in the area of molecular electronics. Our basic research will contribute to Australia's reputation as a source of innovative research and ideas in an area where there is growing international momentum.Read moreRead less
Repulsive van der Waals forces and Brownian ratchet motors: manipulating thermal and quantum Fluctuations. A fundamental problem with miniaturizing machines and mechanical devices below the micron scale is the issue of friction and lubrication. One way to completely circumvent the need for lubrication is to use a little-studied phenomenon known as 'repulsive van der Waals forces', to create materials that fundamentally repel each other in certain fluid environments. This effect is very large at ....Repulsive van der Waals forces and Brownian ratchet motors: manipulating thermal and quantum Fluctuations. A fundamental problem with miniaturizing machines and mechanical devices below the micron scale is the issue of friction and lubrication. One way to completely circumvent the need for lubrication is to use a little-studied phenomenon known as 'repulsive van der Waals forces', to create materials that fundamentally repel each other in certain fluid environments. This effect is very large at the nanoscale and this proposal examines how such forces can be used to make 'lubricant free' motors and nanomachines. This will open up the possibility of building small and portable sensors, actuators, microfluidic devices and eventually active drug delivery systems for health applications.Read moreRead less
Self-Organised 3-D Arrays of Stimulus Responsive Block Copolymer Micelles. At the core of developments in nanotechnology is a desire to manufacture functional devices from molecular or colloidal building blocks. A significant component of this effort is directed at the self-assembly of these materials on solid substrates. Ultimately, the development of higher order functional nanomaterials requires a fine control over the 3-dimensional location of each component; this is a significant problem. I ....Self-Organised 3-D Arrays of Stimulus Responsive Block Copolymer Micelles. At the core of developments in nanotechnology is a desire to manufacture functional devices from molecular or colloidal building blocks. A significant component of this effort is directed at the self-assembly of these materials on solid substrates. Ultimately, the development of higher order functional nanomaterials requires a fine control over the 3-dimensional location of each component; this is a significant problem. In this project our aim is to develop novel self-assembled surface coatings using block copolymer micelles. Spatial control of the micelle adsorption at the solid-aqueous interface will give us a significant degree of control over molecular location in 3-dimensions.Read moreRead less
Materials World Network: Nanostructured Polymer Templating of Liquid Crystals. Liquid crystals have a range of technological applications, with the most successful being displays used in computers, watches and calculators. These applications are dependent on controlling the interfaces of liquid crystals. This project will combine the areas of liquid crystals and polymer adsorption for the preparation of a new class of intelligent nanomaterials with well-defined properties. These engineered mater ....Materials World Network: Nanostructured Polymer Templating of Liquid Crystals. Liquid crystals have a range of technological applications, with the most successful being displays used in computers, watches and calculators. These applications are dependent on controlling the interfaces of liquid crystals. This project will combine the areas of liquid crystals and polymer adsorption for the preparation of a new class of intelligent nanomaterials with well-defined properties. These engineered materials are of interest in industrial applications, including the development of chemical and biological sensors and drug delivery vehicles. This program also strengthens the ties between two world-class nanotechnology groups, capturing new opportunities in nanostructured materials.Read moreRead less
Preparation of nanostructured surfaces by electrochemical deposition through lyotropic liquid-crystal templates. Hexagonal-phase lyotropic liquid crystals may be used as templates to deposit metals on electrodes. The sizes of the structures made by this method are a few nanometres. We propose to exploit both the aqueous and non-aqueous parts of the liquid crystal to deposit different metals, polymers or metals and polymers. Thin metal wires (nano-wires) sheathed in polymer will be the thinnest i ....Preparation of nanostructured surfaces by electrochemical deposition through lyotropic liquid-crystal templates. Hexagonal-phase lyotropic liquid crystals may be used as templates to deposit metals on electrodes. The sizes of the structures made by this method are a few nanometres. We propose to exploit both the aqueous and non-aqueous parts of the liquid crystal to deposit different metals, polymers or metals and polymers. Thin metal wires (nano-wires) sheathed in polymer will be the thinnest insulated wires ever made. Carbon nanotubes will also be aligned in the hexagonal hole in the template allowing exploitation of these unique species. The structures that will be fabricated will be candidates for catalysts, sensor arrays and electronic devices.Read moreRead less