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Conference Proceedings

Water in Mining 2003

Conference Proceedings

Water in Mining 2003

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Water for a Sustainable Minerals Industry - A Review

This paper summarises the results of a study carried out for the Sustainable Minerals Institute, University of Queensland, aimed at identifying the major water-related issues facing the minerals industry internationally and the research required to support the development of practicable solutions. An overview is given of the sources and uses of the world's water resources and of the regional and global sustainability of water supply and management. Agriculture is the world's major user of water; it wastes more water than the minerals industry uses. Water reform and its potential impact on the minerals industry are discussed with particular reference to Australia and South Africa. The sources, uses and management of water on mine and processing sites are outlined. Particular attention is paid to the importance of groundwater as a source of often saline water that can be used in mineral processing and for other purposes. Aquifer storage and recovery has the potential to help conserve water resources. Generally, the major uses of water on mining and processing sites are for mineral processing and refining and for the associated tailings disposal. Water consumption for these purposes may be reduced by recycling process water, using saline water, paying close attention to water management, thickening tailings and using techniques such as dry stacking and paste. A change in the minerals processing paradigm in respect of water use could come through research into new, improved and less costly dry processing techniques. The treatment of mine and processing water will be required increasingly before water is reused, stored, discharged or sold, and before sites are decommissioned. Research and development are required to reduce costs and develop new treatment methods. Mine closure and decommissioning raise a number of long-term water issues requiring continuing generic and site-specific research and development.
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  • Published: 2003
  • PDF Size: 0.699 Mb.
  • Unique ID: P200306033

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