NEUTRALISING MINERAL REACTIONS IN ACID MINE DRAINAGE CONTROL. The project addresses the serious environmental problem of acid and toxic element release from iron sulfides in waste rock dumps and tailings storage in the mining industry. Long-term neutralising capacity, currently not tested in laboratory assessments, is available from the reaction of some silicate and aluminosilicate minerals. This potential has not been systematically tested or modelled. The research project aims to understand th ....NEUTRALISING MINERAL REACTIONS IN ACID MINE DRAINAGE CONTROL. The project addresses the serious environmental problem of acid and toxic element release from iron sulfides in waste rock dumps and tailings storage in the mining industry. Long-term neutralising capacity, currently not tested in laboratory assessments, is available from the reaction of some silicate and aluminosilicate minerals. This potential has not been systematically tested or modelled. The research project aims to understand the relative mechanisms and rates for long-term alleviation of acid production with mineral layered and blended combinations. Improved understanding will provide methodology for assessment and control of acid mine drainage.Read moreRead less
Environmentally Benign Flotation Chemicals. The research described in this proposal and the anticipated outcomes are concerned with replacing toxic and environmentally hazardous chemicals used in the mineral processing industry with benign chemicals that are biodegradable and have low toxicity. Replacing these chemicals reduces the risk of workplace injuries and damage to the environment that could be caused by industrial accidents.
Cause and effect: new mechanisms of particles formation in thunderstorms. This project aims to identify meaningful and specific indicators for predicting particle formation and alteration during thunderstorms. How thunderstorms develop is well-understood. However, identifying meaningful and specific indicators for predicting particle alteration during a thunderstorm is still not clear. This project will practically contribute to the evidence of the impact of air particulates, thereby having dire ....Cause and effect: new mechanisms of particles formation in thunderstorms. This project aims to identify meaningful and specific indicators for predicting particle formation and alteration during thunderstorms. How thunderstorms develop is well-understood. However, identifying meaningful and specific indicators for predicting particle alteration during a thunderstorm is still not clear. This project will practically contribute to the evidence of the impact of air particulates, thereby having direct implications for meteorological, and air pollution policy in Australia and worldwide. This project will allow researchers to understand the impact of these factors on the escalation of the causative effects, and to find a way to prevent unnecessary fatal outcomes.Read moreRead less
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
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
Particles at Interfaces—Controlling Detachment. Small, solid particles affect the processes used by the Australian mining industry to recover precious metals and valuable minerals in ways that remain poorly understood. The outcomes of this project will make significant contributions to the fundamental understanding of the role of particles in emulsions and foams. The results will also ultimately transfer to, and have a substantial impact on, the pharmaceutical industry, which is poised to use na ....Particles at Interfaces—Controlling Detachment. Small, solid particles affect the processes used by the Australian mining industry to recover precious metals and valuable minerals in ways that remain poorly understood. The outcomes of this project will make significant contributions to the fundamental understanding of the role of particles in emulsions and foams. The results will also ultimately transfer to, and have a substantial impact on, the pharmaceutical industry, which is poised to use nanotechnology to revolutionise drug delivery.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0238533
Funder
Australian Research Council
Funding Amount
$480,000.00
Summary
In Situ Spectroscopy of Particle and Material Interfaces. We seek to establish a world-class research facility for the in situ study of particle and material interfaces. The two techniques that will form the backbone of the facility are Raman scattering and surface second harmonic generation (SHG). The proposed in situ spectroscopy facility will be multi-disciplinary, contributing to research in chemistry, chemical engineering, geology, forensic science, and biotechnology. The establishment o ....In Situ Spectroscopy of Particle and Material Interfaces. We seek to establish a world-class research facility for the in situ study of particle and material interfaces. The two techniques that will form the backbone of the facility are Raman scattering and surface second harmonic generation (SHG). The proposed in situ spectroscopy facility will be multi-disciplinary, contributing to research in chemistry, chemical engineering, geology, forensic science, and biotechnology. The establishment of the facility will enhance research in the areas of minerals processing, mineralogy, water treatment, and drug delivery.Read moreRead less
SYNCHROTRON MICROPROBE METALLURGICAL CASE STUDIES. The micro-focus capabilities of synchrotron techniques (XRF, XRD, XAS) will enable the high resolution spatial correlations required to advance the understanding of the three systems to be studied:
- Activation for flotation of sphalerite with varying iron contents;
- Arsenic leaching as a function of local structure, phase and mineral assemblage;
- Optimisation of ferrous alloy microstructure on cryogenic treatment.
These case studies have ....SYNCHROTRON MICROPROBE METALLURGICAL CASE STUDIES. The micro-focus capabilities of synchrotron techniques (XRF, XRD, XAS) will enable the high resolution spatial correlations required to advance the understanding of the three systems to be studied:
- Activation for flotation of sphalerite with varying iron contents;
- Arsenic leaching as a function of local structure, phase and mineral assemblage;
- Optimisation of ferrous alloy microstructure on cryogenic treatment.
These case studies have been chosen to specifically target the minerals processing and manufacturing industrial sectors and will be used to increase industrial awareness of the potentials of synchrotron techniques prior to the commissioning of the Australian Synchrotron in 2007.
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