Gassing Mechanism and Stability of Foamed Explosive Emulsions. Mining of minerals such as coal involves crushing the surrounding rock strata, or the mineral ore itself, with emulsion explosives. One of the most important properties determining suitability of an emulsion explosive to a particular mining operation is its velocity of detonation, which can be adjusted by varying the number and size of air bubbles distributed in the emulsion matrix. The present project aims to develop new ways of g ....Gassing Mechanism and Stability of Foamed Explosive Emulsions. Mining of minerals such as coal involves crushing the surrounding rock strata, or the mineral ore itself, with emulsion explosives. One of the most important properties determining suitability of an emulsion explosive to a particular mining operation is its velocity of detonation, which can be adjusted by varying the number and size of air bubbles distributed in the emulsion matrix. The present project aims to develop new ways of generating air bubbles, to gain fundamental understanding of the foaming mechanism in currently used gassing techniques, and to invent ways to stabilise large bubbles within the emulsion. The project will provide scientific underpinning for the development of a new range of emulsion explosives manufactured by Orica for Australian and international markets, maintaining the Orica's position as a leader in the field of emulsion explosives.Read moreRead less
Novel technology to sensitise emulsion explosives. The project will develop a new technology for more efficient and safer extraction of minerals. It will extend the application of emulsion explosives to low-temperatures and will eliminate the heating of emulsion blasting agents during transport. Since mining operations are located in regional areas, the project will bring benefits to local and rural communities. The project will also generate new knowledge on the behaviour and stability of th ....Novel technology to sensitise emulsion explosives. The project will develop a new technology for more efficient and safer extraction of minerals. It will extend the application of emulsion explosives to low-temperatures and will eliminate the heating of emulsion blasting agents during transport. Since mining operations are located in regional areas, the project will bring benefits to local and rural communities. The project will also generate new knowledge on the behaviour and stability of three-phase systems that contain very small gas bubbles. In addition to its fundamental importance, this knowledge can be carried over to food and cosmetic industries to facilitate the development of new products.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
Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and ch ....Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and chemical interactions that occur between the particle and the oil-water interface, and develop a more efficient explosive that can be produced continuously on a commercial scale.Read moreRead less
Improving explosive emulsions by understanding surfactant interactions. This project will design new surfactants that will lead to more cost effective, stable and reliable explosive emulsions. The pressure required to force dispersed phase droplets to coalesce will be measured both directly and by osmotic stress. These parameters have not previously been measured for an inverse emulsion system. The measurements made will be correlated to the structure of the stabilising surfactant enabling new a ....Improving explosive emulsions by understanding surfactant interactions. This project will design new surfactants that will lead to more cost effective, stable and reliable explosive emulsions. The pressure required to force dispersed phase droplets to coalesce will be measured both directly and by osmotic stress. These parameters have not previously been measured for an inverse emulsion system. The measurements made will be correlated to the structure of the stabilising surfactant enabling new and more effective surfactants to be designed.Read moreRead less
Development of a Novel One Step Process for Gas Conversion to Liquid. Australia has a rich natural gas reserve, most of which is in remote locations. This project will lead to a new technology to use the remote gas that would be flared into the atmosphere, thus benefiting both Australian economy and green house gas reduction. It will also reduce the risk of relying on importing oil from Overseas thus contributing to Australia's energy security. In addition, while crude-based oil emits SOx, NOx a ....Development of a Novel One Step Process for Gas Conversion to Liquid. Australia has a rich natural gas reserve, most of which is in remote locations. This project will lead to a new technology to use the remote gas that would be flared into the atmosphere, thus benefiting both Australian economy and green house gas reduction. It will also reduce the risk of relying on importing oil from Overseas thus contributing to Australia's energy security. In addition, while crude-based oil emits SOx, NOx and particulates etc into air, the liquid fuels from gas are pure and burns cleanly thus also contributing to air pollution control. Read moreRead less
Hydrogen Production by Non-thermal Plasma Assisted Catalytic Pyrolysis of Natural Gas. This project aims to develop a cost effective technology for hydrogen production using catalytic pyrolysis of natural gas assisted by non-thermal plasma. The mechanism and kinetics of catalytic hydrocarbon decomposition on carbons produced in situ will be systematically studied. Based on the fundamental understanding of carbon nanostructures and their catalytic activities and stabilities, the non-thermal plasm ....Hydrogen Production by Non-thermal Plasma Assisted Catalytic Pyrolysis of Natural Gas. This project aims to develop a cost effective technology for hydrogen production using catalytic pyrolysis of natural gas assisted by non-thermal plasma. The mechanism and kinetics of catalytic hydrocarbon decomposition on carbons produced in situ will be systematically studied. Based on the fundamental understanding of carbon nanostructures and their catalytic activities and stabilities, the non-thermal plasma and the catalytic reactions will be optimized to achieve high conversion and catalytic stability. The project will lead to a new process combining effective carbon catalyst and low temperature plasma to produce pure hydrogen with high energy efficiency and no CO2 emissions.Read moreRead less
Mechanisms of Ammonium Nitrate Decomposition and Stability of Industrial Explosives in Reactive Mining Grounds. This project is designed to probe reaction mechanisms of ammonium nitrate based explosives with pyritic shales commonly found in overburdens of mineral deposits, and to study the influence of various factors, such as mineralogical characteristics, carbonaceous materials, weathering, pH values and application of various inhibition agents, on the decomposition and stability of ammonium n ....Mechanisms of Ammonium Nitrate Decomposition and Stability of Industrial Explosives in Reactive Mining Grounds. This project is designed to probe reaction mechanisms of ammonium nitrate based explosives with pyritic shales commonly found in overburdens of mineral deposits, and to study the influence of various factors, such as mineralogical characteristics, carbonaceous materials, weathering, pH values and application of various inhibition agents, on the decomposition and stability of ammonium nitrate. Ammonium nitrate crystallisation, which significantly reduces the stability of emulsion explosives, will be examined using both chemical and microscopic tools. The outcomes of this research will provide a scientific basis that underpins the development of safe and cost-effective explosives for applications in dangerous reactive mining grounds.Read moreRead less
Particle Transport and Separation in High Aspect Ratio Inclined Channels. This project will be of benefit to the Australian coal and mineral processing industries, worth tens of billions of dollars to the Australian economy each year. The objective is to establish new options for the processing of particles as large as 50mm, and smaller than 50 microns in size, and hence significantly extend the operating size range of the Reflux Classifier. The development of new resources, especially those of ....Particle Transport and Separation in High Aspect Ratio Inclined Channels. This project will be of benefit to the Australian coal and mineral processing industries, worth tens of billions of dollars to the Australian economy each year. The objective is to establish new options for the processing of particles as large as 50mm, and smaller than 50 microns in size, and hence significantly extend the operating size range of the Reflux Classifier. The development of new resources, especially those of poorer grade, requires more effective separation technology. Success in this project will significantly benefit the end users of the technology and also contribute to Australia's Mining Services industry.Read moreRead less
A multiscale-multifunctional approach to advanced diagnosis and operator performance in complex process systems. Major process system failures and subsequent poor diagnosis continues to produce significant company disruption, environmental damage, injury and possible loss of life. The benefits of this work will be reduced impacts and risks. This work will provide a new integrated approach with structured tools and diagnostic designs for process industries. It should have direct impacts on compan ....A multiscale-multifunctional approach to advanced diagnosis and operator performance in complex process systems. Major process system failures and subsequent poor diagnosis continues to produce significant company disruption, environmental damage, injury and possible loss of life. The benefits of this work will be reduced impacts and risks. This work will provide a new integrated approach with structured tools and diagnostic designs for process industries. It should have direct impacts on company performance through improved diagnosis, more timely response and hence reduced likelihood of major accidents. It will help to improve overall risk management practice in the process industries with less impact on people, property and environment, thus improving operational performance. Local communities will be direct beneficiaries of these reduced risks.Read moreRead less