A novel low-energy process route for primary copper production utilising synergistic hydro- and pyro-metallurgical processes. With increasing demand for copper metal, there is an urgent need to find new ways to efficiently treat lower grade ores. The new process offers a way of significantly reducing energy consumption and greenhouse gas emissions in primary copper production and making more efficient use of the world's copper resources.
A benign alkaline process for scarce metal extraction and reagent recycle. A benign alkaline process for scarce metal extraction and reagent recycle.. This project aims to selectively extract base and precious metals from their ores in saline and non-saline environments, building upon a patented process utilising edible glycine under oxidising and mildly alkaline solutions. Extraction processes of metals from primary resources mostly use harsh, toxic and/or non-recyclable reagents. Exploratory r ....A benign alkaline process for scarce metal extraction and reagent recycle. A benign alkaline process for scarce metal extraction and reagent recycle.. This project aims to selectively extract base and precious metals from their ores in saline and non-saline environments, building upon a patented process utilising edible glycine under oxidising and mildly alkaline solutions. Extraction processes of metals from primary resources mostly use harsh, toxic and/or non-recyclable reagents. Exploratory research has already indicated the potential for easy metal recovery from their alkaline glycinate solutions and recycling of the lixiviant (glycine). Anticipated outcomes are a safe, non-toxic process for extracting metals from primary resources.Read moreRead less
Development of a novel process for recovering fluoride from spent pot-lining as AlF2(OH) using industrial waste solutions. Every year approximately 40,000 tonnes of a hazardous waste known as spent pot-lining is generated by Australia’s aluminium industry. It contains significant levels of leachable cyanide and fluoride and is currently being stored awaiting a suitable treatment technology. This project will develop a novel low-energy and low-cost process for extracting the fluoride as a usefu ....Development of a novel process for recovering fluoride from spent pot-lining as AlF2(OH) using industrial waste solutions. Every year approximately 40,000 tonnes of a hazardous waste known as spent pot-lining is generated by Australia’s aluminium industry. It contains significant levels of leachable cyanide and fluoride and is currently being stored awaiting a suitable treatment technology. This project will develop a novel low-energy and low-cost process for extracting the fluoride as a useful aluminium fluoride product that can be recycled back into the aluminium industry; destroy the cyanide; and recover other components for use in the metallurgical industry. If commercialised the benefit will be an end to the stockpiling of spent pot-lining in Australia, a more sustainable aluminium industry, and protection of the world’s natural fluoride resources.Read moreRead less
Reverse engineering nature: metal extraction through mineral replacement. This project aims to find new methods of copper recovery from low grade copper ores, which are currently uneconomic to mine. In nature, at the top of ore deposits and just below the water-table, is a region known as the supergene zone. Here mild oxidizing reactions take place causing primary ore minerals such as chalcopyrite to be replaced by more copper-rich, less refractory minerals. These processes are driven by disso ....Reverse engineering nature: metal extraction through mineral replacement. This project aims to find new methods of copper recovery from low grade copper ores, which are currently uneconomic to mine. In nature, at the top of ore deposits and just below the water-table, is a region known as the supergene zone. Here mild oxidizing reactions take place causing primary ore minerals such as chalcopyrite to be replaced by more copper-rich, less refractory minerals. These processes are driven by dissolution re-precipitation reactions (CDR reactions) and in many CDR reactions, the reaction mechanism, rather than intensive properties such as pressure and temperature, control the nature of the products and the overall reaction process. This project will explore the mechanism and controls on these reactions to see if they can be utilized in the mining industry to economically extract copper from low grade ores.
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Nature's mechanisms for leaching and remobilising metals. This project aims to understand the chemical and physical processes that govern reactive transport and metal scavenging in rocky environments. Much of Australia's mineral wealth is the result of the interaction of warm fluids with rocks deep in the Earth over geological timescales. The formation of ore deposits is governed by the physical chemistry of mineral dissolution and crystallisation, and by fluid flow through porous rocks and frac ....Nature's mechanisms for leaching and remobilising metals. This project aims to understand the chemical and physical processes that govern reactive transport and metal scavenging in rocky environments. Much of Australia's mineral wealth is the result of the interaction of warm fluids with rocks deep in the Earth over geological timescales. The formation of ore deposits is governed by the physical chemistry of mineral dissolution and crystallisation, and by fluid flow through porous rocks and fractures. This project integrates innovation in geology, chemistry, and mineral engineering, and will deliver mineral-scale reaction models that will increase efficiency of in-situ mining and leaching technologies. Knowledge generated can be applied to improve mineral exploration, mining, and processing, contributing to unlocking billions of dollars’ worth of resources tied up in low grade, mineralogically complex ores.Read moreRead less
Controlling arsenic to unlock value in gold and copper resources. This project aims to characterise the transformation of arsenic between oxidation states during mineral processing. Up to one third of the world’s gold reserves are locked up in arsenic rich minerals and 5000 tonnes of arsenic is released annually from mine waste. The project will enable the development of process technology that immobilises and removes arsenic at the earliest possible stage. The use of novel time-resolved in-situ ....Controlling arsenic to unlock value in gold and copper resources. This project aims to characterise the transformation of arsenic between oxidation states during mineral processing. Up to one third of the world’s gold reserves are locked up in arsenic rich minerals and 5000 tonnes of arsenic is released annually from mine waste. The project will enable the development of process technology that immobilises and removes arsenic at the earliest possible stage. The use of novel time-resolved in-situ techniques proposed in this research will give vital information of the complex chemical pathways involved during processing which current characterization methods on pre- and post-processed species do not achieve.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE120100112
Funder
Australian Research Council
Funding Amount
$275,000.00
Summary
A Raman facility for advanced research supporting Australia’s natural gas, oil, coal and minerals industries. This modern Raman Spectroscopy facility will support the science and engineering that underpins the production and processing of Australia’s natural resources. Using high-pressure fibre optics, novel lasers and advanced imaging, the facility will enable the monitoring and improvement of processes and materials under extreme conditions.
Bio-recovery of rare earth elements from Australian soils and mine tailings. This project aims to discover how microbes dissolve weathering-resistant phosphate minerals that contain valuable rare earth elements used widely in modern technology. This discovery would create new knowledge in the interdisciplinary fields of biogeochemistry and biohydrometallurgy, using an innovative combination of techniques in metagenomics, microbiology and mineralogy. Expected research outcomes include new, more ....Bio-recovery of rare earth elements from Australian soils and mine tailings. This project aims to discover how microbes dissolve weathering-resistant phosphate minerals that contain valuable rare earth elements used widely in modern technology. This discovery would create new knowledge in the interdisciplinary fields of biogeochemistry and biohydrometallurgy, using an innovative combination of techniques in metagenomics, microbiology and mineralogy. Expected research outcomes include new, more economic and environmentally sustainable biotechnologies for recovering rare earth elements and increasing phosphorus availability in Australian mineral deposits and soils. These outcomes should benefit the mining and agricultural sectors, by decreasing Australia's dependency on overseas REE supply and the use of fertilizers.Read moreRead less
Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleachin ....Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleaching of low-grade ores creating a win-win scenario, reducing environmental harm while extracting value from these currently uneconomic materials.Read moreRead less
Inorganic membrane percrystallisation in hydrometallurgy. This project aims is to develop the scientific and engineering basis for a new Australian inorganic membrane technology for the crystallisation of metal compounds. Inorganic membrane percrystallisation is a recent breakthrough promising improved productivity, energy savings and the ability to tailor particle properties. This project will develop a mechanistic model encompassing solution transport phenomena, crystal nucleation-growth-agglo ....Inorganic membrane percrystallisation in hydrometallurgy. This project aims is to develop the scientific and engineering basis for a new Australian inorganic membrane technology for the crystallisation of metal compounds. Inorganic membrane percrystallisation is a recent breakthrough promising improved productivity, energy savings and the ability to tailor particle properties. This project will develop a mechanistic model encompassing solution transport phenomena, crystal nucleation-growth-agglomeration and engineering process parameters affecting single and binary salt systems. This model will provide a basis for technology development benefiting Australia, such as the improvement of the production of nickel sulphate for the growing battery materials market.Read moreRead less