Effect of Saline Water on Flotation Processes. The Australian mineral and coal industry is valued at $40 billion in export income per year. This significant component of the Australian economy will benefit from this research into the increased use of highly saline water to improve coal and mineral flotation recovery. The project will keep Australia at the leading edge of flotation research, research training and development for the coal and mineral industry. With direct relevance to the National ....Effect of Saline Water on Flotation Processes. The Australian mineral and coal industry is valued at $40 billion in export income per year. This significant component of the Australian economy will benefit from this research into the increased use of highly saline water to improve coal and mineral flotation recovery. The project will keep Australia at the leading edge of flotation research, research training and development for the coal and mineral industry. With direct relevance to the National Research Priorities: Water - a Critical Resource, this project will make contributions to the development of a more environmentally sustainable coal and mineral processing industry.Read moreRead less
New process for mineral flotation. Flotation is an important process in the minerals industry, which underpins Australia's prosperity. Ore is first finely ground and suspended in water. Finer grinds need more energy. The energy used in grinding in Australia is 14 percent of the national electricity consumption. This project will lead to a flotation technology that can successfully process much coarser particles than current devices, with large savings in grinding energy, greenhouse gas emissions ....New process for mineral flotation. Flotation is an important process in the minerals industry, which underpins Australia's prosperity. Ore is first finely ground and suspended in water. Finer grinds need more energy. The energy used in grinding in Australia is 14 percent of the national electricity consumption. This project will lead to a flotation technology that can successfully process much coarser particles than current devices, with large savings in grinding energy, greenhouse gas emissions and water consumption. A case study of a large mine shows that, by increasing the initial grinding size from 100 µm to 500 µm, the new technology could cut grinding energy by 45 percent, the carbon dioxide emissions by the same amount, and the water consumption by a factor of five.Read moreRead less
Molecular phenomena and engineering of saline water-air interfaces. Saline water use in Australia's mining, agricultural, and drinking water industries is increasing. Many of the production processes of these industries are underpinned by many complex molecular phenomena and interactions at the saline water - air interfaces which we want to understand, optimise and design. The findings will have direct benefits in the field of flotation used to recover valuable minerals using hyper-saline bore w ....Molecular phenomena and engineering of saline water-air interfaces. Saline water use in Australia's mining, agricultural, and drinking water industries is increasing. Many of the production processes of these industries are underpinned by many complex molecular phenomena and interactions at the saline water - air interfaces which we want to understand, optimise and design. The findings will have direct benefits in the field of flotation used to recover valuable minerals using hyper-saline bore water and to produce drinking water from seawater by desalination. This project is important because it will lead to sustainable ways of producing water and using water in industry. Its success will ensure that our industries remain at the forefront of innovation and are globally competitive.Read moreRead less
Extending the range of the flotation process for particle separation. The minerals industry is a significant contributor to Australia's prosperity. Flotation is an important process for upgrading low-grade ores to high-grade concentrates, and for recovering fine coal from tailings. This project is aimed at solving a long-term problem in current flotation practice, the difficulty in recovering ultrafine and coarse particles, currently lost from production. We will pursue two new discoveries recen ....Extending the range of the flotation process for particle separation. The minerals industry is a significant contributor to Australia's prosperity. Flotation is an important process for upgrading low-grade ores to high-grade concentrates, and for recovering fine coal from tailings. This project is aimed at solving a long-term problem in current flotation practice, the difficulty in recovering ultrafine and coarse particles, currently lost from production. We will pursue two new discoveries recently made by us, relating to the recovery of ultrafines and coarse particles. Benefits to Australia are of the order of $500 million a year in increased exports, education of high-quality graduates, export income from license fees and equipment.Read moreRead less
Mass transport in aqueous foams. Flotation is extremely important in the minerals industry, whose exports are $110.5 billion annually. This project aims to significantly advance understanding of liquid transport in flotation froths, via a quantitative study of foam mass flow mechanisms. If successful, it may lead to modifications to current flotation devices, improving their froth-zone performance and saving money, water, energy and greenhouse gas emissions.
Dynamic behaviour of foams. Foam flow occurs in many industrial processes such as the fractionation of proteins and coal flotation. The proposed research will investigate transient behaviour at start-up of such processes and how the method of foam production affects process efficiency. The dispersion of liquid tracers in foam and a newly discovered phenomenon of ?upwards rippling? will be studied as it is likely that these could illuminate the physical processes that lay behind foam flow. Remova ....Dynamic behaviour of foams. Foam flow occurs in many industrial processes such as the fractionation of proteins and coal flotation. The proposed research will investigate transient behaviour at start-up of such processes and how the method of foam production affects process efficiency. The dispersion of liquid tracers in foam and a newly discovered phenomenon of ?upwards rippling? will be studied as it is likely that these could illuminate the physical processes that lay behind foam flow. Removal of unwanted material from a pipeline is often a major industrial problem and the ability of foams to perform this role will be assessed.Read moreRead less
Behaviour of particles in flotation froths. Froth flotation is widely used for the separation of mineral particles. Currently, there is an upper limit on the size of particles that can be treated. It has recently been found that the upper limit can be extended from a few hundreds of microns, up to millimetre sizes, by processing the particles in the froth. We will study the forces acting on particles in flotation froths, as well as froth drainage and entrainment, to find the factors that limit t ....Behaviour of particles in flotation froths. Froth flotation is widely used for the separation of mineral particles. Currently, there is an upper limit on the size of particles that can be treated. It has recently been found that the upper limit can be extended from a few hundreds of microns, up to millimetre sizes, by processing the particles in the froth. We will study the forces acting on particles in flotation froths, as well as froth drainage and entrainment, to find the factors that limit the flotation of large particles and objects. The work is relevant to water treatment and the separation of plastics for recycling.Read moreRead less
Granular dynamics: theories, modelling and simulation. Particle science and technology is a rapidly developing interdisciplinary research field and is of paramount importance Australia in view of the heavy dependence on raw materials processing. This project will tackle the core problems in this field by developing novel theories and mathematical models to describe the flow of particles. Application of the research outcomes can lead to better process or product control, a decrease in energy cons ....Granular dynamics: theories, modelling and simulation. Particle science and technology is a rapidly developing interdisciplinary research field and is of paramount importance Australia in view of the heavy dependence on raw materials processing. This project will tackle the core problems in this field by developing novel theories and mathematical models to describe the flow of particles. Application of the research outcomes can lead to better process or product control, a decrease in energy consumption and an improvement in productivity, which, together with the research training offered through the conduct of the work, is very helpful to maintaining Australia's leading position in resource, energy, process and allied industries.Read moreRead less
Discrete particle modelling and analysis of complex particle-fluid flows. Multiphase processes are widely used in both conventional and modern industries in Australia and worldwide, however rarely reach more than 60% of design capacity because of a poor understanding of their fundamental characteristics. This project aims to overcome this problem using an extensive combined fundamental and applied approach. The resulting theories, computer models and simulation techniques will be applied to imp ....Discrete particle modelling and analysis of complex particle-fluid flows. Multiphase processes are widely used in both conventional and modern industries in Australia and worldwide, however rarely reach more than 60% of design capacity because of a poor understanding of their fundamental characteristics. This project aims to overcome this problem using an extensive combined fundamental and applied approach. The resulting theories, computer models and simulation techniques will be applied to improve process design, control and optimisation. Consequentially, productivity and Australian competitiveness will be significantly enhanced in its most important industries such as minerals, metallurgical, chemical, energy, and materials.Read moreRead less