gold flotation macraes

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  • OGC +LMS: Macraes

    OGC +LMS: Macra IMPORTANT: All OceanaGold staff must login with their network login (eg jsmith) DO NOT USE your email address - this is for use by external trainees only If you are unsure of your network login please contact your local IT support...

  • Justin Johns - Processing Manager - Waihi - OceanaGold ,

    Refractory Gold Processing - Pressure Oxidation , Macraes OceanaGold Corporation , Flotation Optimisation - Arsenopyrite/Pyrite Float...

  • Captain James Macrae — Badass of the Week

    Captain James Macrae Few things made 18th century sailors blast a load of grapeshot into their trousers with greater ferocity than the sight of a giant ominous black flag fluttering in the breeze from the mast of a badass warship teeming with unshaven, hook ,...

  • OceanaGold Commissions World’s Largest Flotation Cells

    flotation capacity of over 300m3 and is the world’s largest commercially operating flotation cell The new installation of 300m3 tanks combined with Macraes existing Outotec 150m3 tanks has successfully replaced the site’s original two trains of column and conventional flotation ,...

  • OceanaGold anticipates gold production wave - Australian ,

    Feb 19, 2021· The Macraes operation is set to produce between 155,000 and 165,000 ounces of gold in 2021, and is expected to remain consistent through each quarter, while the Haile gold mine is slated to ....

  • Gold Au - Yokogawa

    Cowal – Barrick Gold Located in Western NSW, Cowal mine in 2011 produced 269,000 ounces of gold It is an open pit It is owned by Barrick Gold Corporation of America The gold is processed by carbon in leach and flotation methods A Yokogawa Centum DCS controls the production process Hidden Valley Gold Plant - Newcrest...

  • Rudi Frischmuth - Senior Metallurgist, Autoclave ,

    Oceana Gold - Macraes Gold Mine NZ 2 years 7 months Process Engineer - Pressure Oxidation and CIL , Process Engineer - Grinding and Flotation Oceana Gold - Macraes Gold Mine NZ May 2005 - Jun 2006 1 year 2 months Acting Process Manager LionOre - Black Swan Nickel Mine Dec 2004 - ,...

  • Gold Ore Processing, Volume 15 - 2nd Edition

    May 03, 2016· Gold Ore Processing: Project Development and Operations, Second Edition, brings together all the technical aspects relevant to modern gold ore processing, offering a practical perspective that is vital to the successful and responsible development, operation, and closure of any gold ore processing operationThis completely updated edition features coverage of established, newly ,...

  • Flotation of Gold and Gold-Bearing Ores - ScienceDirect

    Jan 01, 2016· Flotation takes place at natural pH values, and PAX is the only collector The frother is a mixture of MIBC and Dowfroth 400 The Macraes Gold Mine in New Zealand floats a bulk arsenopyrite–pyrite–pyrrhotite sulfide flotation concentrate at natural pH value...

  • Yokogawa Mining and Metals Processing Capability

    Cowal – Barrick Gold Located in Western NSW, Cowal mine in 2011 produced 269,000 ounces of gold It is an open pit It is owned by Barrick Gold Corporation of America The gold is processed by carbon in leach and flotation methods A Yokogawa Centum DCS controls the production process Hidden Valley Gold Plant - Newcrest...

  • New Flotation Setup Provides Optimal Recovery for Macraes Gold

    Macraes gold was a two train plant Each train consisted of an Outotec Flash flotation cell on the cyclone underflow which recovered 50%-65% of the sulphide minerals The cyclone overflow was then fed into rougher column cells with the tail from the columns passing into mechanical scavengers...

  • J - Careers - OceanaGold

    OceanaGold is a multinational gold producer committed to the highest standards of technical, environmental and social performance For 30 years, we have been contributing to excellence in our industry by delivering sustainable environmental and social outcomes for our communities, and strong returns for our shareholders Our global exploration, development, and operating experience has ,...

  • Complex processing technology of gold-bearing concentrates ,

    Sep 04, 2015· The object of investigation is an autoclave cake of the refractory gold-containing flotation concentrate prepared using a pilot plant The influence of heat treatment (HT) on the chemical composition and recovery of gold is investigated for this material in a temperature range of 100–500°C Due to the HT, it is possible to acquire high recovery of gold up to 98% This is attained due to ....

  • Antimony Mobilization through Two Contrasting Gold Ore ,

    Apr 22, 2009· The Macraes gold mine has no stibnite, and most Sb is in solid solution in the abundant arsenopyrite (Sb up to 2,000 mg/kg) Pit waters have both Sb and As dissolved up to 01 mg/L, partly because of evaporative concentration in a low-rainfall environment Macraes tailings waters have high As (up to 3 mg/L) but negligible Sb (<0001 mg/L)...

  • OceanaGold cut jobs, cut Macraes mine life - Australian Mining

    Jan 08, 2014· Outotec to supply sustainable flotation technology in WA ABS shows jobs and earnings ride COVID turbulence OceanaGold has announced it will cut more than 100 jobs at its Macraes gold ,...

  • The flotation of gold bearing ores — A review - ScienceDirect

    Jul 01, 1994· Keywords Flotation, Gold-bearing ores INTRODUCTION Gold is a relatively rare metal and the average content in the earth's crust is about 3ppb The average gold grade of a low grade deposit is only some 3ppm and this low abundance makes the exploration, sampling, assaying and processing of gold bearing ores difficult ....

  • Mobilisation and attenuation of arsenic around gold mines ,

    Macraes area has resulted in localised dissolved arsenic , mobilisation in the vicinity of three different historic gold mining areas in east Otago: Macraes, Nenthorn, and Barewood (Fig 1) These mining areas are all in unforested , silicate tailings and discharged to a larger flotation tailings impoundment The concentrate tailings ....

  • Gold Flotation Mining Solution - Mineral Processing

    Our flotation solutions can easily applicate to small and medium scale flotation plants but not only within the gold-mining industry Our flotation method is a technique widely used for the recovery of gold from gold-containing copper ores, base metal ores, copper-nickel ores, platinum group ores, and many other ores where other processes are not applicable...

  • New Flotation Setup Provides Optimal Recovery for Macraes Gold

    Macraes gold was a two train plant Each train consisted of an Outotec Flash flotation cell on the cyclone underflow which recovered 50%-65% of the sulphide minerals The cyclone overflow was then fed into rougher column cells with the tail from the columns passing into mechanical scavengers...

  • De Grey Mining (ISIN:AU000000DEG6; ASX: DEG; FSE: DGD ,

    The flotation circuit generated a gold-rich sulphide concentrate that was oxidised using pressure oxidation (POX) , Macraes, Porgera and Lihir in the Asia Pacific region, various Carlin ....

  • Recovering Gold through the Froth Flotation Process ,

    Feb 06, 2018· Froth flotation works by exploiting the hydrophobic properties of gold molecul First, ore is ground into an extremely fine powder The powdered ore is mixed with water to create a slurry, which is mixed with surfactants to increase the gold’s hydrophobicity This mixture is placed into a large tank filled with distilled water...

  • (PDF) Macraes Orogenic Gold Deposit (New Zealand) Origin ,

    Macraes Orogenic Gold Deposit (New Zealand) Origin and Development of a World Class Gold Mine , (>90%) consist of silicate minerals discarded from the flotation system throughout that time The ....

  • MACRAES PHASE III PROJECT - Otago Regional Council

    MACRAES PHASE III PROJECT WATER MANAGEMENT BLH-453174-226-824-V3April 2011 Report No 0978110-562 R002 vE 4 10 INTRODUCTION 11 Background Oceana Gold (New Zealand) Limited (OceanaGold) operates the Macraes Gold Project (MGP) located in east Otago, approximately 25 km west of Palmerston (Figure 1) The MGP consists of a series of opencast...

  • Macraes Gold Mine, Waitaki District, New Zealand

    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 Other Power Poll #2 – Changes in job due to technology Skip survey header...

  • Macraes Operation - OceanaGold

    May 27, 2020· Its annualised gold production is split approximately 75% to open pit production and about 25% underground production Macraes Operation has celebrated several extraordinary milestones, including pouring five million ounces and having its 10,000 th bar poured, both in 2019 Between 2007 and 2016, flotation ,...

  • GOLD RECOVERY The golden age

    gold grade sufficient for a chemical treatment CME decided to test the feasibility of pre-concentration using flotation The CME mill currently achieves a global recovery of about 67% with flotation estimated at 84% Crushing is performed by one jaw crusher and two hammer crushers Ore then passes through a Knelson KC 48 gravity...

  • Gold and arsenic in pyrite, Geology and gold on Otago's ,

    The Macraes gold mine, like most similar gold mines, is strongly enriched in arsenic as well as gold The main arsenic mineral is arsenopyrite (FeAsS), and this mineral is commonly intergrown with pyrite grains However, there is also some arsenic distributed through the pyrite In the images below, pyrite makes up most of the view, but a small ....

  • Stratigraphy and mineralogy of tailings at Macraes gold ,

    The Macraes gold deposit in the Otago Schist, New Zealand, formed during late metamorphic fluid flow through a lower greenschist facies shear zone Mineralisation occurred near to the brittle ....

  • Characterisation of arsenic geochemistry in mine tailings ,

    The Macraes mine extracts mesothermal gold from a mineralised shear zone in the Otago Schist (Figure 1) The ore typically has 1 % pyrite and arsenopyrite which contain encapsulated gold, in the order of 16 grams per tonne (Milham and Craw 2009) The mine was opened in 1989, and has...

  • Outotec TankCell success at Macraes - Mining Magazine

    Jun 25, 2009· Flotation major Outotec has announced the successful ongoing performance of its TankCell-300 flotation cell train at New Zealands largest gold producing operation, OceanaGolds Macraes mine Archive >Equipment...