• Macraes Mine Wikipedia

    Macraes Mine in East Otago is New Zealand's largest gold mine, and consists of a large scale opencast mine opened in 1990, and a newer underground mine, opened in 2008. It is situated close to the settlement of Macraes Flat and is owned by OceanaGold Corporation.. Gold production averaged 193,000 Troy ounces/year for 2008 through 2010. Ore grades have been declining, to 1.26

  • Major Mines & Projects Macraes Mine

    Apr 15, 2020· The Macraes Process Plant recovers gold by concentrating the metal into a relatively small fraction of flotation concentrate, oxidising the reground concentrate in a pressure oxidation autoclave, washing the oxidised residue and then utilising

  • Report Oceana Gold, Macraes Gold Project Greenhouse Gas

    The Macraes Mine is New Zealand’s largest gold mine, and is owned and operated by Oceana Gold (New Zealand) Ltd (OceanaGold). The mine consists of a large scale open cast mine, underground mine (Frasers Underground), waste rock and tailings disposal areas and supporting mine infrastructure.

  • Macraes Operation asx.au

    Mar 16, 2015· For personal use only Mine Fleet Model No. Extra Details . 11 OceanaGold Discharge wash solution MACRAES CON STORAGE INCO CYANIDE KILL UNIT REGRIND MILL Limestone Wash water Run- of mine ore ROM BIN JAW MILL 500 MILL 02 MILL 350 ROUGHER/SCAVENGERS 3 x 300 m³ and 2 x 150 m³ RECLEANERS 6x16 m³ CLEANERS 4x38 m³ MACRAES PROCESSING PLANT

  • macraes gold processing plant

    OceanaGold concluded that upgrading its equipment at the Macraes gold mine would be beneficial to its business. learn more; Does Macraes Mine Use A Wash Plant . Macraes Gold Processing Plant spf-production . macraes gold processing plant, Posts Related to macraes processing plant pdf » flotation and cyanidation of a semi refractory gold ore .

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    Using a gold wash plant, exposed gold-bearing gravels are mined using a bulldozer that pushes and stockpiles the gravel near a wash plant.The stockpiled gold-bearing gravel is then fed into the wash plant by a front-end loader or large backhoe. This practice promotes equipment efficiency by allowing the bulldozer to continue mining while the loader or backhoe feeds the wash plant at a steady rate.

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  • Mining, Processing and Environment at Macraes Request PDF

    Tailings and processing residues at historic mine sites (Blackwater mine, West Coast; Golden Point and Golden Bar, Hyde-Macraes shear zone) contain up to 1000 mg/kg Hg, and in adjacent surface

  • Mining, Processing and Environment at Macraes SpringerLink

    Aug 11, 2016· Johnstone Q, LaBrooy S, Craw D (2001) Formation and remediation of scales, pressure oxidation plant, Macraes Mine, New Zealand. Proceedings, Aus Inst Min Metall NZ Branch Ann Conf, pp 275-280 Google Scholar. Kerr G, Druzbicka J, Lilly K, Craw D (2015a) Jarosite solid solution associated with arsenic-rich mine waters, Macraes mine, New Zealand.

  • Introduction: Macraes Mine as an Orogenic Gold Deposit

    Aug 11, 2016· The Otago goldfield, in which the Macraes deposit occurs (Fig. 1.2) developed as an alluvial goldfield following a large gold rush that was initiated in 1861.More than 8 million ounces of alluvial gold have been recovered from this goldfield since 1861 (Williams 1974), and numerous short-lived alluvial operations still occur sporadically in the goldfield.

  • File:Gold mine and mill, Macraes Flat, 2007.jpg Wikipedia

    Macraes gold mine and mill, Otago, New Zealand, May 2007 Date: 28 May 2007, 16:29: Source: Macrae's gold extraction plant, Otago, New Zealand, May 2007. Uploaded by PDTillman; Author: Phillip Capper from Wellington, New Zealand: Licensing. This file is licensed under the Creative Commons Attribution 2.0 Generic license.

  • Coronation pit, Macraes Mine, Macraes (Macraes Flat

    Gold. Satellite pit for the Macraes gold mine. Located 2 kilometres north-west of Frasers pit and the processing plant. On the 31st December 2009 resources were indicated as 1.23 Mt at 1.18 g/t Au, inferred 2.98 Mt at 1.1 g/t Au for 0.11 Moz Au (0.5 g/t Au cut-off) .

  • Two Go Tiki Touring: Macraes Giants- Otago; Part 2

    Mar 28, 2017· Oceana Gold's Macraes Mine is New Zealand's largest gold producing mine, producing over 4 million ounces of gold to date. The area leased by the mine covers around 27,500 hectares. There are two mines, Macraes Open Pit which has been operating

  • Southern pit, Macraes Mine, Macraes (Macraes Flat

    Southern pit, Macraes Mine, Macraes (Macraes Flat), Waitaki District, Otago Region, New Zealand : Gold. A shallow pit between the processing plant and Frasers pit. The Hyde-Macrae Shear Zone at this point is 100 metres thick, bounded by a Hanging Wall, 10 metres thick, and Footwall shear up

  • Mining in New Zealand Wikipedia

    Gold worth $250M in 2006 was produced from two large hard-rock mines (Martha Mine and Macraes Mine), several medium-sized alluvial operations, and a large number of small alluvial mines. Ironsands. The Waikato North Head ironsand mine produces up to 1.2 million tonnes of ironsand a year, for use in the New Zealand Steel mill at Glenbrook.

  • gold processing plant in new zealand

    Minequip NZ Rotary Gold Trommel Wash Plant Manufacturer. Minequip’s gold mining equipment rotary trommel wash plants are manufactured for commercial use in small to medium sized gold recovery operations, and our gold mining equipment is used successfully in production gold mines in New Zealand, Mongolia, Papua New Guinea, Bolivia, Ghana and Cameroon.

  • efficient low consumption gold processing plant

    BENCHMARKING ENERGY EFFICIENCY A CASE STUDY . Benchmarking energy efficiency a case study benchmarking energy efficiency a case study at macraes gold mine by k barns, g lane, k osten, n scagliotta and tens of refractory au processing plants in the world, the macraes plant is difficult to benchmark the efficiency of oxygen consumption in the pox plant, and the other unit processes of the plant

  • Arsenic redistribution in loess above the Hyde- Macraes

    The Hyde-Macraes Shear Zone (HMSZ) is a 30 km long structure that hosts New Zealand's largest gold mine at Macraes in East Otago. The structure is variably mineralised along strike and recent

  • Glasshouse Screening Trials for Plant Cover Establishment

    Although there is a strong benefit in establishing N-fixing plants on mine substrates the unique characteristics of the fresh tailings at the Macraes mine site does seem to support their early establishment. There are a number of factors that may be responsible: legumes rank amongst the most sensitive plants to arsenic toxicity.

  • mine managers in golden star resources

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  • Didipio water treatment plant Outotec

    Outotec also installed the world-first flotation cell, TankCell 300, at OceanaGold’s Macraes mine in New Zealand, which at the time was the largest flotation cell ever built. Process design Outotec was engaged to carry out pre-feasibility engineering studies for the water treatment plant, as

  • Oceanagold extends life of Macraes gold mine in New

    The move to extend the Macraes mine life by at least seven years from 2021 follows an increase in its proven and probable mineral reserves. Macraes, which commenced production in 1990, comprises open-pit mines, an underground mine and an adjacent process plant.

  • Introduction: Macraes Mine as an Orogenic Gold Deposit

    Aug 11, 2016· The Otago goldfield, in which the Macraes deposit occurs (Fig. 1.2) developed as an alluvial goldfield following a large gold rush that was initiated in 1861.More than 8 million ounces of alluvial gold have been recovered from this goldfield since 1861 (Williams 1974), and numerous short-lived alluvial operations still occur sporadically in the goldfield.

  • Southern pit, Macraes Mine, Macraes (Macraes Flat

    Southern pit, Macraes Mine, Macraes (Macraes Flat), Waitaki District, Otago Region, New Zealand : Gold. A shallow pit between the processing plant and Frasers pit. The Hyde-Macrae Shear Zone at this point is 100 metres thick, bounded by a Hanging Wall, 10 metres thick, and Footwall shear up

  • Coronation pit, Macraes Mine, Macraes (Macraes Flat

    Gold. Satellite pit for the Macraes gold mine. Located 2 kilometres north-west of Frasers pit and the processing plant. On the 31st December 2009 resources were indicated as 1.23 Mt at 1.18 g/t Au, inferred 2.98 Mt at 1.1 g/t Au for 0.11 Moz Au (0.5 g/t Au cut-off) .

  • Didipio water treatment plant Outotec

    Outotec also installed the world-first flotation cell, TankCell 300, at OceanaGold’s Macraes mine in New Zealand, which at the time was the largest flotation cell ever built. Process design Outotec was engaged to carry out pre-feasibility engineering studies for the water treatment plant, as

  • Mining in New Zealand Wikipedia

    Gold worth $250M in 2006 was produced from two large hard-rock mines (Martha Mine and Macraes Mine), several medium-sized alluvial operations, and a large number of small alluvial mines. Ironsands. The Waikato North Head ironsand mine produces up to 1.2 million tonnes of ironsand a year, for use in the New Zealand Steel mill at Glenbrook.

  • mine managers in golden star resources

    does macraes mine use a wash plant. mine managers in golden star resources does macraes mine use a wash plant Tracked cone crushing plant is mainly used in secondary golden goose model 1d . Get Price; RegionsCMEWA. The CME Eastern and North Eastern Regional Councils provide a forum for mine managers to Northern Star Resources MMG) Golden Grove

  • gold processing plant in new zealand

    Minequip NZ Rotary Gold Trommel Wash Plant Manufacturer. Minequip’s gold mining equipment rotary trommel wash plants are manufactured for commercial use in small to medium sized gold recovery operations, and our gold mining equipment is used successfully in production gold mines in New Zealand, Mongolia, Papua New Guinea, Bolivia, Ghana and Cameroon.

  • Gold Deposits of New Zealand Geology for Investors

    Oct 17, 2019· Macraes is New Zealand’s largest gold producing area. It is located only 100km north of the city of Dunedin. Mine employees live and commute to work from either Dunedin, Palmerston or a few who live in the local town of Macraes Flat. The mine is located on a plateau at an elevation of greater than 500m above sea level.

  • efficient low consumption gold processing plant

    BENCHMARKING ENERGY EFFICIENCY A CASE STUDY . Benchmarking energy efficiency a case study benchmarking energy efficiency a case study at macraes gold mine by k barns, g lane, k osten, n scagliotta and tens of refractory au processing plants in the world, the macraes plant is difficult to benchmark the efficiency of oxygen consumption in the pox plant, and the other unit processes of the plant

  • Concern at Macraes fossil fuel use Otago Daily Times

    Oct 23, 2019· Operations at Macraes Mine require fossil fuel use in a way that could soon be seen as unsustainable, a hearings commissioner says. However, he was unable to take this into consideration under the law when granting consent for the project's expansion.

  • WATER TREATMENT PLANT AT OCEANAGOLD’S DIDIPIO

    The Didipio Mine water treatment plant treats outflows from the mine’s TSF. It is an important environmental initiative to treat total suspended solids so that the water used by Didipio Mine is returned clean and of high quality to the ecosystem. At the heart of the water treatment plant is the 34m clar-

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  • Refractory Sulfide Ores—Case Studies ScienceDirect

    Jan 01, 2016· The Macraes POX plant is still in operation as of 2015. It has not been expanded but now treats sulfide concentrates from the Macraes Mine (approximately 24 t/h at 8.5% S) and the Reefton Mine (approximately 12.5 t/h at 24% S). Complete oxidation of sulfides is targeted in order to convert iron to the ferric state for arsenic stabilization.