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Moisture/particle interactions under oscillatory motion – model development
By K Williams, A Lavrinec, V Gurung, D Ilic
The moisture content of iron ore during handling can range from the dust extinction moisture at the point of arrival at the port to the transportable moisture limit at the point of loading ships for m
Sep 18, 2023
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Driving the transformation to hydrogen ironmaking – an experimental vertical shaft H2-DRI reactor facility in NZ
By M McCurd, M Lynch, B H. Yin, S Mendoza, C W. Bumby, Y Iwasaki, B Rumsey
Iron and steel production is responsible for approximately 6.3 per cent of global anthropogenic CO2 emissions. Direct reduction of iron with hydrogen is a potential route for decarbonising the iron an
Sep 18, 2023
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Fibre-reinforced Geopolymer Concrete – An Innovative Material for Tunnel Segments
By M Wieloch, D Wimpenny, M Chappell
Fibre-reinforced geopolymer concrete (FRGC) contains no Portland cement or steel reinforcement, but instead uses synthetic fibre reinforcement and a geopolymer binder. The use of geopolymer binder in
Sep 17, 2014
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Outotec Pressure Oxidation - More out of Sulfide Ore
By J Tiihonen, J OÆCallaghan, T Haakana
Outotec is today capable of providing technologies, process equipment and engineering for the construction of pressure oxidation leaching (POX) plants in any location in the world. Outotec works with
Sep 26, 2013
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Discrete Fracture Network Modelling for Tunnel Design in the Sydney Basin
By A L. de Ambrosis, F M. Weir, M Fowler
Traditional kinematic and statistical analyses of geological structure for geotechnical engineering applications, while considered industry standard practice, have some limitations and unrealistic ass
Sep 17, 2014
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Mine Wastes as Cover Materials in a Water-shedding Soil Cover in North-West Queensland
By T Baumgartl, C Gonzales, A Soliman, M Edraki
A soil cover isolates potentially acid-forming (PAF) mine wastes from atmospheric interaction and thereby mitigates acid mine drainage. As a cover that comprises either a single layer or a composite b
Jul 16, 2014
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Measurement of Residual Shear Strength Using a Modified Direct Shear Apparatus
By L Tatnell, R Mackay, A Tolooiyan
The multi-reversal direct shear test (MRDS) method is commonly used to measure the residual shear strength of soils. However, when the standard direct shear (DS) apparatus is used, the MRDS method is
Nov 5, 2014
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Blasting Approaches to Increase Mine Productivity and Reduce Greenhouse Gas Emissions in Surface Coal Mining
By T Goswami, G Brent
In response to concerns over greenhouse gas (GHG) emissions and an imposed cost in some jurisdictions, many mining houses have committed to reductions in their GHG emissions. However, mining faces par
Aug 24, 2015
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A comparison of the performance of fully versus partially encapsulated cable bolts based on laboratory-scale testing
By P Hagan, S Wang, D Li, B Loh
A study was undertaken to quantify the differences in performance between a full-length encapsulated cable bolt and a partially encapsulated cable bolt. Much research has been reported on the differen
Nov 30, 2018
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Olympic Dam Operations Review
The Olympic Dam copper/uranium deposit was discovered in 1975 and subsequently commenced production in 1988 at a rate of 1.5 Mtpa using the sublevel open stoping mining method. In the following five y
Jan 1, 1998
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Jones-Wilkins-Lee Parameters for Civil Explosives
By R Castedo, P Segarra, L M. López, J A. Sanchidrián, A P. Santos
The cylinder test allows us to determine the expansion of a copper cylinder by the detonation of an explosive charge inside. This test, originally designed for military explosives, has been adapted fo
Aug 24, 2015
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Designing Flotation Cells For Optimised Flow Dynamics
By T Niitti, J Turunen, P B, A Rinne
In todayÆs marketplace, with high metals prices, many operations are faced with the challenge of improving recovery in the particle size ranges which are normally difficult to recover. This presentati
Jan 1, 2006
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Geomembranes – from design to handover and some of the lessons learnt
By A Marta
Geomembrane (GMB) liners are being used more frequently for the storage or capping of mine waste due to stricter regulatory requirements relating to environmental protection. The longevity of any li
Jul 23, 2018
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Research on supporting technology for production level roadways of block caving in Pulang Copper Mine
By X Feng, X Zhang, W Sun, Y Zhe, K Hou, B Zhao, H Liu
Pulang Copper Mine, being China's largest newly built mine using block caving, boasts an annual production capacity of 12.5 million tons. Production level and roadway stability hold the key to the
Nov 30, 2018
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The Design, Installation and Commissioning of an Absorption Refrigeration System at Gwalia Gold Mine in Western Australia
By J deVries, A Broodryk, P Kyselica, K McLean
Gwalia gold mine is located close to the town of Leonora in the Goldfields region of Western Australia, some 830 km from Perth. The mine is wholly owned by St Barbara Ltd, an Australian Securities Exc
Aug 31, 2015
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Resource Estimation and Grade Assignment - A Comparison Between Historical Production and Current Maxwell Mining Validation Case Study at Morning Star Gold Mine, Woods Point
By P Jackson, J Rea, M D. Goodz
The Morning Star Gold Mine has operated over a 101-year period, producing gold from narrow quartz veins and sulfide stockworks hosted mainly within a dioritic-gabbroic dyke. The deposit has been devel
Jan 1, 2008
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Mineral Processing Changes in New Zealand Steel
By D E. Thorp
The mining and concentration operations of New Zealand Steel have been carried out initially from the Waikato North Head (WNH) deposit since 1969 and subsequently from the Taharoa deposit since 1972.
Jan 1, 1977
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The Effect of Grinding Media on Copper and Gold Flotation in the Presence of Clay Minerals
By R Wei, Y Peng, D Seaman
This study addresses a widespread problem confronting the mining industry: the deleterious effect of clay minerals in flotation. This problem is seemingly exacerbated by the presence of iron contamina
Sep 26, 2013
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Estimation of Resources and Conversion to Reserves ù Protocols for the Assessment, Reduction and Management of Risk
By G Ferguson a, P Carrasco, P P. A Dowd
International codes of practice offer broad definitions with respect to the classification of resources in terms of risk. Specific guidelines and protocols, to analyse sample data, carry out geostatis
Jan 1, 2000
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The Development of Colloidal Mixer Base CRF Systems
By A E Reschke
The high-shear colloidal mixer is generally recognised as the most efficient method of mixing cement based grouts. Only recently however has this technology been applied to the production of cemente
Jan 1, 1998