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The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was ...
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Figure 1. Schematic diagram of Musselwhite Mine grinding and leaching circuit The presence of pyrrhotite in gold ores is known to have a negative impact on the dissolution of gold and on the consumption of cyanide. This report presents the results of a cyanidation study on a sample containing pyrrhotite as the only cyanicide.
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The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was determined to be 50% monoclinic and 50% hexagonal. A leach using 8ppm dissolved oxygen yielded only 82.3% gold extraction with a 0.29kg/t NaCN consumed. The addition of lead nitrate, directly to the
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Jan 01, 2005 The Musselwhite Mine treats a pyrrhotite-bearing ore containing mostly free gold (5.5–5.8 g/t Au, 4.2% pyrrhotite). The pyrrhotite is both monoclinic (50%) and hexagonal (50%). Cyanidation with the addition of lead nitrate was already part of
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Placer Dome Canada operates a 4000 tpd gold cyanidation facility at Musselwhite mine, in northwestern Ontario, where the mill tailings have been classified as acid generating due to their higher than acceptable pyrite (FeS2) and pyrrhotite (Fe8S9) content.
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PDF Cyanidation of a pyrrhotite-bearing gold ore . Cyanidation of a pyrrhotite-bearing gold ore. The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was determined to be 50% monoclinic and 50% hexagonal. Get Price
Read MoreJan 01, 2005 The Musselwhite Mine treats a pyrrhotite-bearing ore containing mostly free gold (5.5–5.8 g/t Au, 4.2% pyrrhotite). The pyrrhotite is both monoclinic (50%) and hexagonal (50%). Cyanidation with the addition of lead nitrate was already part of
Read MorePlacer Dome Canada operates a 4000 tpd gold cyanidation facility at Musselwhite mine, in northwestern Ontario, where the mill tailings have been classified as acid generating due to their higher than acceptable pyrite (FeS2) and pyrrhotite (Fe8S9) content.
Read More
Musselwhite mine uses a gold cyanidation and CIP (carbon in pulp) extraction process. Ore is extracted via a blast hole process and moved via a series of scoop-trams and underground dump trucks to one of 2 rockbreakers, either on the surface or at a 400
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The effect of pyrite, pyrrhotite, chalcopyrite, realgar and arsenopyrite on gold dissolution in cyanide media was investigated. The cyanidation of synthetic gold ores in the presence of various concentrations of sulfides was studied under constant experimental conditions. A mineralogical analysis of the minerals was performed. The leaching kinetics were determined.
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The mineralization at Musselwhite can be classified as an Iron Formation hosted gold deposit. Typically, gold in these deposits occurs in cross-cutting quartz veins and veinlets or as fine disseminations associated with pyrite, pyrrhotite, and arsenopyrite hosted in iron formations and adjacent rocks within volcanic or sedimentary sequences (McMillan 1996).
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Sep 24, 2015 Mining methods and gold processing musselwhite mines initially operated both open-pit and underground mines, open-pit production having been designed to ensure mill feed at a rate of 3,300t/d for about five years following mill commissioning. Most of the mine’s ore is now sourced from underground. And gold processing from musselwhite mines processing includes crushing,
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Musselwhite is a fly-in, fly-out operation located approximately 500 kilometers north of Thunder Bay, Canada. Musselwhite’s ore is mined from two main zones below Lake Opapimiskan. Ore is processed onsite using a circuit that includes crushing, grinding, leaching by cyanidation, carbon in pulp recovery and electrowinning. Gold recoveries are 96%.
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The Musselwhite mine is a world-class syn-deformation gold deposit hosted by amphibolite facies Algoma-type banded iron formation (BIF) and comprised in the Mesoarchean North Caribou Lake ...
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02.16.2010 Ontario Mining Association The Musselwhite Mine of Ontario Mining Association member Goldcorp has become the first gold operation in Canada to earn certification from the International Cyanide Management Institute (ICMI). The Musselewhite Mine, which is located about 430 north of Thunder Bay, is setting this environmental standard for gold producers in the country.
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Musselwhite Mine The History of a Giant Gold . Goldcorp’s Musselwhite mine in north-western Ontario, Canada has in recent years become a world-class deposit. Initially discovered in the early 1960s by Alan and Harold Musselwhite, the then marginal mine eventually started production in 1997 and has to date produced 2.6 Moz of gold. Two million ...
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Sep 27, 2016 The Musselwhite Mine was initially certified in full compliance with the Cyanide Code in February 2010, and recertified in May 2013. As required under the Cyanide Code, the mine was again audited against ICMI's Verification Protocol within three years of its previous certification by independent professional third-party auditors.
Read MoreJan 01, 2011 It will highlight the challenges from laboratory testing to pre-feasibility to the engineered design of the thickened tailings system implemented at Musselwhite Mine.BACKGROUNDGoldcorp Canada’s Musselwhite Mine, in Northwestern Ontario (120 km north of Pickle Lake), is an underground gold mining operation that began production in 1997.
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Cyanidation of a pyrrhotite bearing gold ore. The European Journal of Mineral Processing and Environmental Protection Vol.3, No.3, 1303 0868, 2003, pp. 353 361 Cyanidation of a pyrrhotite bearing gold ore G. Deschênes1*, D. Hall2 and M. Fulton1 1 Mining and Mineral Sciences Laboratories, CANMET, Natural Resources Canada, 555 Booth Street, Ottawa, Ontario, K1A 0G1 Canada 2 Placer
Read MoreCalculations In Gold Cyanidation. Keywords Gold cyanidation Leaching Reaction kinetics Modeling The chemistry of gold dissolution in alkaline cyanide solution has continually received attention and new rate equations expressing the gold leaching are still developed The effect of leaching parameters on gold cyanidation is studied in this
Read MoreMusselwhite mine uses a gold cyanidation and CIP (carbon in pulp) extraction process. Ore is extracted via a blast hole process and moved via a series of scoop-trams and underground dump trucks to one of 2 rockbreakers, either on the surface or at a 400
Read MoreThe Musselwhite mine is a world-class syn-deformation gold deposit hosted by amphibolite facies Algoma-type banded iron formation (BIF) and comprised in the Mesoarchean North Caribou Lake ...
Read MoreSep 27, 2016 The Musselwhite Mine was initially certified in full compliance with the Cyanide Code in February 2010, and recertified in May 2013. As required under the Cyanide Code, the mine was again audited against ICMI's Verification Protocol within three years of its previous certification by independent professional third-party auditors.
Read More
PDF Cyanidation of a pyrrhotite bearing gold ore. The Musselwhite Mine in Canada processes a free milling gold ore at 5.5 5.8g/t Au and 4.2 pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was determined . Know more
Read MoreJan 01, 2011 It will highlight the challenges from laboratory testing to pre-feasibility to the engineered design of the thickened tailings system implemented at Musselwhite Mine.BACKGROUNDGoldcorp Canada’s Musselwhite Mine, in Northwestern Ontario (120 km north of Pickle Lake), is an underground gold mining operation that began production in 1997.
Read MoreCyanidation of a pyrrhotite bearing gold ore. The European Journal of Mineral Processing and Environmental Protection Vol.3, No.3, 1303 0868, 2003, pp. 353 361 Cyanidation of a pyrrhotite bearing gold ore G. Deschênes1*, D. Hall2 and M. Fulton1 1 Mining and Mineral Sciences Laboratories, CANMET, Natural Resources Canada, 555 Booth Street, Ottawa, Ontario, K1A 0G1 Canada 2 Placer
Read More02.16.2010 Ontario Mining Association The Musselwhite Mine of Ontario Mining Association member Goldcorp has become the first gold operation in Canada to earn certification from the International Cyanide Management Institute (ICMI). The Musselewhite Mine, which is located about 430 north of Thunder Bay, is setting this environmental standard for gold producers in the country.
Read More
The musselwhite mine in canada processes a free milling gold ore at 5.5-5.8g/t au and 4.2% pyrrhotite. a laboratory investigation was conducted to improve cyanidation. the pyrrhotite was determined to be 50% monoclinic and 50% hexagonal. a leach using 8ppm dissolved oxygen yielded only 82.3% gold extraction with a 0.29kg/t nacn consumed. the ...
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PDF The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was ...
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May 08, 2020 Modern acquisition of gold involves open-pit mining, crushing rock and depositing the material in huge piles atop leach pads. The rock piles are then sprayed with sodium cyanide, a chemical that dissolves gold. This process is called cyanide heap leaching and would be used at the proposed Coffee Gold mine
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A method for controlling the extraction of gold from a gold ore by the cyanidation process in which a leaching step including the addition of a lead compound, which is typically lead nitrate or other lead salt, is used. In order to maintain stable conditions in the leaching process, and to use the leaching reagents efficiently, an analysis step is used to monitor the concentration of ...
Read MoreCalculations In Gold Cyanidation. Keywords Gold cyanidation Leaching Reaction kinetics Modeling The chemistry of gold dissolution in alkaline cyanide solution has continually received attention and new rate equations expressing the gold leaching are still developed The effect of leaching parameters on gold cyanidation is studied in this
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Goldcorp Canada’s Musselwhite Mine is a 4,000 tpd underground gold mine located in northwestern Ontario, Canada. The mine began operation in 1997 and by end of 2009, has produced over 16 Mt of tailings. The currently identified mine resource is expected to greatly exceed the capacity of
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Deschênes “Cyanidation of a Pyrrhotite-Bearing Gold Ore from Musselwhite Mine”; Ann. Mtg. Cdn. Min. Proc., Canada, Jan., 2002, 735-755. ... A method for improving the efficiency of a gold cyanidation leach process by controlling and modifying the rate of lead compound addition to a leach liquor, by adjusting the rate of addition according ...
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