Extraction of gold from thiosulfate leach liquors using selective magnetic ion exchange (MIEX) resins. Cyanide processes used for gold leaching can cause severe environmental problems. This proposal studies the use of thiosulfate as an alternative, concentrating on the design and synthesis of new functionalised magnetic ion-exchange resins, which will act as selective adsorbents for the gold thiosulfate complex and thereby facilitate the implementation of this efficient, low environmental impact ....Extraction of gold from thiosulfate leach liquors using selective magnetic ion exchange (MIEX) resins. Cyanide processes used for gold leaching can cause severe environmental problems. This proposal studies the use of thiosulfate as an alternative, concentrating on the design and synthesis of new functionalised magnetic ion-exchange resins, which will act as selective adsorbents for the gold thiosulfate complex and thereby facilitate the implementation of this efficient, low environmental impact process. Since the leaching is typically applied to ores rich in copper, resins for the recovery of copper will also be designed. Laboratory proving trials will be conducted and successful candidates will be considered for future commercialisation of a Resin-in-Pulp leaching and recovery process.Read moreRead less
Development and Use of Ionic Liquids in Metal Recovery from Ores, Concentrates and Mattes. Ionic liquids, which are liquid over a wide temperature range and can dissolve a wide range of solutes to high concentrations, promise new and yet unexplored approaches in processing ores. We aim to prepare ionic liquids and apply these to increase the intensity of copper and gold sulfide processing, and to explore more efficient separation of platinum group metals from mattes. New oxidative leaching techn ....Development and Use of Ionic Liquids in Metal Recovery from Ores, Concentrates and Mattes. Ionic liquids, which are liquid over a wide temperature range and can dissolve a wide range of solutes to high concentrations, promise new and yet unexplored approaches in processing ores. We aim to prepare ionic liquids and apply these to increase the intensity of copper and gold sulfide processing, and to explore more efficient separation of platinum group metals from mattes. New oxidative leaching techniques will be developed to diminish ore passivation and enhance recovery; high current electrowinning of copper in ionic liquids will be probed. Evolving technology should yield economic and environmental benefits for a nationally important industry.Read moreRead less
Dynamic Controllability Analysis for Plantwide Process Design and Control. World-wide chemical plants represent many billions of dollars of investment. Improvements to the process designs in terms of controllability would have the potential to provide large economic benefits, as it implies improved productivity, reduced operating costs and product variability. This proposed research will be a step towards integration of process design and control, which has been widely recognized as the key to t ....Dynamic Controllability Analysis for Plantwide Process Design and Control. World-wide chemical plants represent many billions of dollars of investment. Improvements to the process designs in terms of controllability would have the potential to provide large economic benefits, as it implies improved productivity, reduced operating costs and product variability. This proposed research will be a step towards integration of process design and control, which has been widely recognized as the key to this improvement. The outcomes from this project may be readily implemented in process design practice, and therefore have a direct impact to the Australian and world-wide process industries, helping to build a more efficient and environmental conscious Australian process industries.Read moreRead less
Novel Cutting Picks for Mining Industry and an Australian Standard. This research will enable the development of highly efficient and robust mining picks and establish the methodology and techniques for setting up an Australian standard for mining picks which does not exist at present but is imperatively needed by the mining industry. The novel technology will provide effective solutions to improving mine environment and safety, and reducing nation's power consumption, green house gas emission, ....Novel Cutting Picks for Mining Industry and an Australian Standard. This research will enable the development of highly efficient and robust mining picks and establish the methodology and techniques for setting up an Australian standard for mining picks which does not exist at present but is imperatively needed by the mining industry. The novel technology will provide effective solutions to improving mine environment and safety, and reducing nation's power consumption, green house gas emission, and environmental pollution. These will in turn reduce the probability of black lung which has been the biggest killer of underground workers in mines.Read moreRead less
Mechanism and Control of In-situ Minerals Extraction. By introducing the theory of coupled hydraulic-mechanical-thermal-chemical processes and the well technology in petroleum engineering into in-situ minerals extraction, mineral values will be extracted directly from ore deposits without the need for mining. This work will have the potential to convert the known sub-economic mineral resources (about 37 million tonnes in Australia alone) into reserves. The five-year project will lead to a comput ....Mechanism and Control of In-situ Minerals Extraction. By introducing the theory of coupled hydraulic-mechanical-thermal-chemical processes and the well technology in petroleum engineering into in-situ minerals extraction, mineral values will be extracted directly from ore deposits without the need for mining. This work will have the potential to convert the known sub-economic mineral resources (about 37 million tonnes in Australia alone) into reserves. The five-year project will lead to a computer simulation assisted in-situ minerals extraction methodology for application in mining industry.Read moreRead less
Economic Operability Assessment of Leaching Process at Kwinana Nickel Refinery. Process operability is concerned with systematic analysis and improvement of process performance in the face of variable operating conditions. This project will develop a rigorous methodology for analysis of process operability with respect to short-term and transient disturbances. The proposed technique will be applied to the Kwinana Nickel Refinery Leach section, in order to reduce the plant variability and increas ....Economic Operability Assessment of Leaching Process at Kwinana Nickel Refinery. Process operability is concerned with systematic analysis and improvement of process performance in the face of variable operating conditions. This project will develop a rigorous methodology for analysis of process operability with respect to short-term and transient disturbances. The proposed technique will be applied to the Kwinana Nickel Refinery Leach section, in order to reduce the plant variability and increase nickel throughput and plant availability. This can be considered as significant move by a process industry to embrace advanced theoretical developments and will act as a benchmark to promote future links between Australian industry and academia.Read moreRead less
Plantwide Control of Modern Chemical Processes from a Network Perspective. Complex plants increasingly appear in modern Australian process industries, particularly in mineral processing, petrochemical and renewable energies sectors. These plants represent vast capital costs and manufacture products at a very large scale. Improvement in control and operation of these processes can potentially provide significant economic benefits. The expected outcome of this research is an effective approach to ....Plantwide Control of Modern Chemical Processes from a Network Perspective. Complex plants increasingly appear in modern Australian process industries, particularly in mineral processing, petrochemical and renewable energies sectors. These plants represent vast capital costs and manufacture products at a very large scale. Improvement in control and operation of these processes can potentially provide significant economic benefits. The expected outcome of this research is an effective approach to improve operational safety, efficiency, product quality and manufacturing flexibility, helping to build a more efficient and environmental conscious Australian chemical industry. This project will also enhance Australia's scientific reputation in the frontier research area of advanced process control and management.Read moreRead less
Development of ultrafine Grained Steels. This project will develop new methods to produce steels with much finer microstructures, and investigate how these microstructures form. This will markedly increase the strength and toughness of these steels, which is particularly required for the pipeline, off shore platform and large construction industries. The method to be used involves controlling the hot deformation of the steel and control of the phase transformation during or after deformation. ....Development of ultrafine Grained Steels. This project will develop new methods to produce steels with much finer microstructures, and investigate how these microstructures form. This will markedly increase the strength and toughness of these steels, which is particularly required for the pipeline, off shore platform and large construction industries. The method to be used involves controlling the hot deformation of the steel and control of the phase transformation during or after deformation. Current work has shown that it is possible to reduce the grain size from 5 to 1microns using quite simple methods.Read moreRead less
Hot Rolling Model for Control of Nb Bearing Steels. High strength Nb bearing strip steels are used to reduce the weight of automotive and construction products. The manufacture of these steels is challenging because of difficulties encountered in maintaining constant properties and strip thickness. The aim of the current work is to develop a model for Nb bearing steels that describes the effect of processing conditions and composition on the microstructure evolution during hot rolling. The model ....Hot Rolling Model for Control of Nb Bearing Steels. High strength Nb bearing strip steels are used to reduce the weight of automotive and construction products. The manufacture of these steels is challenging because of difficulties encountered in maintaining constant properties and strip thickness. The aim of the current work is to develop a model for Nb bearing steels that describes the effect of processing conditions and composition on the microstructure evolution during hot rolling. The model to be developed will incorporate a new approach to describing dynamic recrystallization and will lead to better property and dimensional control. It will also assist in new grade development.Read moreRead less
Development of a Microstructure Model for Process and Product Development. It is possible to mathematically model the evolution of the microstructure of steel during hot rolling and cooling to room temperature. By linking the microstructure to the product performance these models can be used for computer based development of new products and processes. The current work involves an extension of these concepts to the Smorgon Steel minimill. The project involves the development of new equations ....Development of a Microstructure Model for Process and Product Development. It is possible to mathematically model the evolution of the microstructure of steel during hot rolling and cooling to room temperature. By linking the microstructure to the product performance these models can be used for computer based development of new products and processes. The current work involves an extension of these concepts to the Smorgon Steel minimill. The project involves the development of new equations to handle the high residual content from the use of remelted scrap and the use of these models to enhance current and future local and export grades.Read moreRead less