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The operation consists of a large-scale surface mine, an underground mine, and an adjacent process plant inclusive of an autoclave for pressure oxidation of the ore. Its annualised gold production is split approximately 75% to open pit production and about 25% underground
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Macraes Operation. New Zealand's Largest Gold Mine. Learn More. We are New Zealand's largest active gold producing mine, consisting of a large-scale surface mine, an underground mine, and an adjacent process plant.
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Gold at Macraes is known as ‘refractory ore’, which means it’s ultra-fine and resistant to the typical cyanide leach process used by most gold processing plants. This refractory
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6 天之前 The mining process at the Macraes is circular and follows a cycle of exploration, mining, processing, rehabilitation and closure. With a 30-year history of development
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Projects. April 21 2020. Macraes Gold Mine, Waitaki District. Macraes is an open pit and underground gold mine located on the South Island of New Zealand. It is the largest gold
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Gold at Macraes is known as ‘refractory ore’, which means it is ultra-fine and resistant to the typical cyanide leach process, typical of most gold processing plants. This refractory nature of the ore led to inefficiencies
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2016.8.11 Ore mined at Macraes is processed to produce a sulphide mineral rich concentrate, which was originally finely ground and then cyanided to extract the gold.
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2021.12.20 The processing plant at Macraes includes an autoclave, the only processing plant with this feature in New Zealand. "We prioritise partnerships,
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2023.3.13 OceanaGold’s Macraes Operation in the South Island of New Zealand is an open pit and underground gold mine located in Central Otago. Gold was first
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2020.10.13 Macraes Gold Project (MGP) which . includes both open pit and underground mining, ore processing and a single economic analysis based on combined
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The Macraes gold mine is being developed in a regionally extensive orogenic shear zone. Mine tailings consist of sand and silt-sized particles (typically 50–15 µm) of crushed and ground schist, and associated quartz veins. ... Pressure oxidation processes yield acid solutions in the processing plant, but these are mostly neutralised within ...
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2022.1.1 Function in plants Reference; As: Gold bearing arsenopyrite and its alteration by-products: ... The total production at the Macraes gold mine is 4 Moz since 1990 (Moore and Doyle, ... The workflow for pre-processing of the Airborne Hyperspectral data from DSM digital photos and Raw DN values to the georectified reflectance data.
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Gold at Macraes is known as ‘refractory ore’, which means it’s ultra-fine and resistant to the typical cyanide leach process used by most gold processing plants. This refractory nature of the ore initially led to inefficiencies recovering the gold from ore. After innovations and new technology, our ore now goes through a six-stage ...
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2005.3.17 The Macraes mine is hosted in an orogenic (mesothermal) gold deposit in metasedimentary rocks of the Otago Schist belt. Much gold occurs within altered schist with minimal silica-addition, and this study focuses on altered schist ore types. The unmineralized host schists are chemically and mineralogically uniform in composition, but include two
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2022.2.2 Water is also vital when mining for and producing gold, and at the Macraes Operation, water is used in a number of ways. From the trout hatchery, to the processing plant, to the way we capture stormwater and safely store it. Each step in our processing plant requires water to separate the valuable minerals containing the gold from the host
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2021.12.20 The processing plant at Macraes includes an autoclave, the only processing plant with this feature in New Zealand. "We prioritise partnerships, technologies and skills needed to sustainably mine ...
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2021.4.22 Macraes Gold Mine Otago, New Zealand Effective Date: June 30, 2020 Report Date: September 25, 2020 Report Prepared for OceanaGold Corporation Level 14 / 357 Collins Street Melbourne, Victoria 3000 Australia Report Prepared by: OceanaGold (New Zealand) Limited Golden Point Road RD3 Macraes Flat 9483 East Otago New
Read More2005.1.1 In 1996 and 1997, Macraes Mining Company Ltd planned to expand production to over 9 Mt/a through installation of a new 6 Mt/a greenfields plant, to process recently discovered extensions of the orebody. However, the collapse in the gold price in 1997 and delays in obtaining the necessary resource consents resulted in the deferment
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We are New Zealand's largest active gold producing mine, consisting of a large-scale surface mine, an underground mine, and an adjacent process plant. Located in the Otago region of the South Island, we are committed to contributing to the local economy through employment, procurement, community investment and donations - with over 600 people ...
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Just down the road from the Macraes gold mine is the small settlement of Macraes Flat. During the gold rush in the 1860s, it was a busy mining town with around 25 businesses and a population of 500 people. ... In the processing plant, about 90% of the water we use is recycled, much of it from the tailings storage facilities. About 5% of the ...
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2005.1.1 The Macraes Gold Project treats sulfide ore, oxide ore (in campaigns) and retreats some tailings. The expansion in the throughput of the Macraes Gold Project since plant commissioning in 1990 is illustrated in Fig. 3. The periodic high treatment rates for oxide ore represent periods when the main grinding circuit was used to process oxide ore ...
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2017.8.23 That gold is not readily liberated by fine grinding, so cyanidation typically recovers less than 60 % of the gold in this ore Fig. 10.1 Schematic layout of the Macraes mine, processing system, and tailings disposal (modified from Milham and Craw 2009). Principal water pathways are indicated 108 10 Mining, Processing and Environment at
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2020.4.21 Macraes gold mine is situated 2km east of Macraes township in the Waitaki District of Otago New Zealand. The mine site extends across 15,705ha and includes surface operation of 55 million tonnes per annum (Mtpa), underground mine of 1Mtpa, and a processing plant. Spanning across an area of 26,685ha, the company’s mining and
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2020.4.11 Located on the west coast of the South Island of New Zealand, Oceana Gold’s Reefton is an open pit mine that produced 63,000 ounces in 2012. Its processing plant produces a refractory concentrate for further processing at Macraes plant. The processing plant is controlled by a Yokogawa Centum DCS. Macraes – Oceana Gold
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2016.8.11 Hydrothermal graphite in the Hyde-Macraes Shear Zone is finer grained (micron scale) than the lower grade material, and is focussed in microshears that are sub-parallel to the metamorphic foliation (Fig. 8.2; Chaps. 3, 4 and 5).Hence, the distinction is subtle between metamorphosed primary graphite and introduced hydrothermal graphite
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The Coronation and Coronation North deposits are located 5 to 6 km to the northeast of the processing plant. Coronation consists of a 15 to 20 degrees dipping hangingwall shear that is between 3 and 10 metres thick. ... (or Macraes or Macraes Mine) includes operating open pit gold mines. Mining at Macraes has come from thirteen pits comprising ...
Read More2005.1.1 This is typically the comminution circuit or downstream concentrate treatment process (e.g., POX or bio-oxidation plant) for refractory gold ores. Recovery and operating costs are other targets for optimization. The Macraes Gold Project treats sulfide ore, oxide ore (in . Definitions. Terms and their definitions vary from project to project.
Read MoreGold at Macraes is known as ‘refractory ore’, which means it’s ultra-fine and resistant to the typical cyanide leach process used by most gold processing plants. This refractory nature of the ore initially led to inefficiencies recovering the gold from ore. After innovations and new technology, our ore now goes through a six-stage ...
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The Macraes open pit production runs in parallel with the underground operations, with all ore being processed through the Macraes processing plant. Combined annual gold production from the underground operations is projected to be approximately 40,000 to 50,000 ounces. During 2022 at FRUG, activity was focused on developing and stoping
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5 天之前 Shortlisting will commence immediately. Applicants must be eligible to work in New Zealand. Job Description. Responsible for continuous improvement of the flotation and autoclave circuits at Macraes processing plant..Ensuring that all work is carried out in accordance with standard operating procedures and with the highest standards of safety.
Read MoreGold at Macraes is known as ‘refractory ore’, which means it’s ultra-fine and resistant to the typical cyanide leach process used by most gold processing plants. This refractory nature of the ore initially led to inefficiencies recovering the gold from ore. After innovations and new technology, our ore now goes through a six-stage ...
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2016.1.1 A further project incorporating the technology was commissioned in 2014 at the Ararat Gold Plant (GPM Gold) in western Armenia. The process consists of ultrafine grinding of ore or concentrate followed by oxidative leaching at atmospheric pressure in agitated tanks. The leach residue is then processed via conventional CIP.
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Company DescriptionOceanaGold is a growing intermediate gold and copper producer committed toSee this and similar jobs on LinkedIn. ... Responsible for continuous improvement of the flotation and autoclave circuits at Macraes processing plant..Ensuring that all work is carried out in accordance with standard operating procedures and with the ...
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2021.12.1 The gold processing industry is a large consumer of lime reagents in various forms. Its role in gold processing is mainly as a pH control agent for optimal cyanidation leaching of gold, as well as a neutralization agent in refractory gold processing via acidic oxidation routes. There are, however, a range of conditions upstream of
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The Macraes Gold Project has treated sulfide ore, oxide ore (in campaigns) and retreated some tailings. The expansion in the throughput of the Macraes Gold Project since plant commissioning in 1990 is illustrated in Figure 11.3. The periodic high treatment rates for oxide ore represent periods when the main grinding circuit was used to process ...
Read More2023.10.28 Operations. We have a portfolio of four operating mines: the Haile Gold Mine in the United States of America; Didipio Mine in the Philippines; and the Macraes and Waihi operations in New Zealand. Didipio Mine Exploration and Investments Haile Gold Mine Waihi Operation Reefton Restoration Project Macraes Operation Junction Reef.
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2020.7.9 ABSTRACT Roasted residues from historic gold mine processing at the Golden Point historic reserve were thoroughly cemented by surfical processes. The cements are composed mainly of oxidised and acidic Fe–As–S minerals with varying particle size and crystallinity. Bukovskyite (Fe2[AsO4][SO4][OH].7H2O) and scorodite (FeAsO4.2H2O)
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10 The Macraes Operation has been operating continuously since 1990 when a gold processing plant to treat ore mined from open pit methods was constructed and commissioned. Originally the processing plant capacity was 1.5 million tonnes of ore per annum but that was increased through a series of upgrades.
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2005.1.1 2. Summary of gold Plants and Processes. The general principle behind the structure of the volume is that of flowsheeting based on unit operations and applied to a mineralogical classification of gold ore types. Typical unit operations associated with the generic process flowsheet embodied within the structure of this book are shown in Fig. 1.
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
الاتصال: 0371-86549132.