Development of an efficient oxygen-thiosulfate process for the recovery of gold from ores. Gold is currently recovered from the ore by a cyanide leaching process. This high risk procedure is used because there is currently no safe alternative. The research we propose to undertake will investigate a novel thiosulfate-oxygen process to dissolve gold. Successful completion of the project will identify the mechanism of the process and could lead to the replacement of the highly toxic cyanide with th ....Development of an efficient oxygen-thiosulfate process for the recovery of gold from ores. Gold is currently recovered from the ore by a cyanide leaching process. This high risk procedure is used because there is currently no safe alternative. The research we propose to undertake will investigate a novel thiosulfate-oxygen process to dissolve gold. Successful completion of the project will identify the mechanism of the process and could lead to the replacement of the highly toxic cyanide with the non toxic thiosulfate. Thus the proposed project has the potential to substantially alter the gold recovery process, particularly in an era where environmental and public concerns exist over the use of cyanide.Read moreRead less
INVESTIGATION OF THE EFFECT OF ALLOYING ELEMENTS ON SHEAR BAND FORMATION DURING THE WARM ROLLING OF LOW CARBON AND INTERSTITIAL FREE STEELS. This proposal involves the application of three dimensional atom probe field ion microscopy and advanced transmission electron microscopy techniques to study the phenomena of precipitation and solute atoms' interactions with dislocations in warm rolled low carbon steels and interstitial free steels. It is intended to examine the effect of alloying addition ....INVESTIGATION OF THE EFFECT OF ALLOYING ELEMENTS ON SHEAR BAND FORMATION DURING THE WARM ROLLING OF LOW CARBON AND INTERSTITIAL FREE STEELS. This proposal involves the application of three dimensional atom probe field ion microscopy and advanced transmission electron microscopy techniques to study the phenomena of precipitation and solute atoms' interactions with dislocations in warm rolled low carbon steels and interstitial free steels. It is intended to examine the effect of alloying additions on in-grain shear bands formation, texture formation and formability of warm rolled and annealed low carbon steels. Ultimately, the project is concerned with developing of fundamental understanging of solute interactions which provide an improved basis for design of these economically significant steels.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
Separating gold from silica by tailored hydrometallurgical processes. Australia is one of the world's largest producers of gold, and the ability to more efficiently separate gold from its ores will benefit the Australian economy by maximising the value of every tonne of ore which is removed from the ground. Inefficiencies in processing technology can lead to the loss of gold from extraction processes, and the reasons for some of these losses are poorly understood but are believed to be related t ....Separating gold from silica by tailored hydrometallurgical processes. Australia is one of the world's largest producers of gold, and the ability to more efficiently separate gold from its ores will benefit the Australian economy by maximising the value of every tonne of ore which is removed from the ground. Inefficiencies in processing technology can lead to the loss of gold from extraction processes, and the reasons for some of these losses are poorly understood but are believed to be related to interactions between gold and silicate minerals. We will study these interactions with a view towards improving the percentage of gold present in the ores which is able to be extracted and used.Read moreRead less
Optimising gold recovery whilst minimising cyanide and copper discharges during the processing of gold ores containing copper. The presence of copper is a major problem in Australia's gold industry. We have proposed an innovative method for treating copper containing ores which eliminates discharge of copper and cyanide to the tailings dam. The copper is recovered, and the cyanide is either recycled or destroyed within the plant. Another advantage of the process is a reduction in the cyanide req ....Optimising gold recovery whilst minimising cyanide and copper discharges during the processing of gold ores containing copper. The presence of copper is a major problem in Australia's gold industry. We have proposed an innovative method for treating copper containing ores which eliminates discharge of copper and cyanide to the tailings dam. The copper is recovered, and the cyanide is either recycled or destroyed within the plant. Another advantage of the process is a reduction in the cyanide requirement, hence reducing the risk associated with cyanide transport and storage. Thus the proposed project has the potential to substantially improve the gold recovery process, particularly in an era where environmental and public concerns exist over the use of cyanide.Read moreRead less