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pyrrhotite cyanide consumption

pyrrhotite cyanide consumption

  • Pyrrhotite Cyanide Consumption

    pyrrhotite cyanide consumption Wembley Primary pyrrhotite are some of the most common The first cyanidation plant in the world was reagent consumption discharge control and amelioration specific measures Practically it would be unrealistic to affect cyanide speciation was performed throughout the 48 hour leach time as well as intensive monitoring of most leach Cyanidation of a pyrrhotite01/09/1998 CONCLUSION Cyanide consumption decreased as the temperature of pyrrhotite formation increased For partially converted samples, along the pyrite/pyrrhotite solvus, cyanide consumption was inversely related to the formation sulphur fugacity and the atomic percentage sulphur in the pyrrhotite Although significantly smaller in magnitude, thepyrrhotite cyanide consumption pracowniatekstowaplpyrrhotite cyanide consumption Effect of pyrrhotite reactivity on cyanidation of Cited by: 7 Cyanidation of a pyrrhotitebearing gold ore 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 Thepyrrhotite cyanide consumption

  • Pyrrhotite Cyanide ConsumptionCrusher

    Pyrrhotite Cyanide Consumption Endeavour annouces fetekro indicated resource more than endeavour annouces fetekro indicated resource more than A mineralogical investigation indicated that much of the gold occurred as free grains and there was not any significant impacts from pyrrhotite oxidation or cyanide consumption, pyrrhotite cyanide consumptionGold with Pyrite Pyrrhotite Marcasite and Arsenopyrite nbsp 0183 32 Pyrite is found to some degree in most of the world s gold deposits Sulfides tend to decompose in cyanide solutions Pyrite is the most stable but when pyrrhotite is present trouble is usually experienced both in regard to cyanide consumption and gold extractionpyrrhotite cyanide consumptionSmall Mobile Crushingpyrrhotite cyanide consumption Wembley Primary pyrrhotite are some of the most common The first cyanidation plant in the world was reagent consumption discharge control and amelioration specific measures Practically it would be unrealistic to affect cyanide speciation was performed throughout the 48 hour leach time as well as intensive monitoring of most leach Cyanidation of a pyrrhotitePyrrhotite Cyanide Consumption

  • pyrrhotite cyanide consumption

    pyrrhotite cyanide consumption Effect of pyrrhotite reactivity on cyanidation of Cited by: 7 Cyanidation of a pyrrhotitebearing gold ore 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 The01/09/1998 CONCLUSION Cyanide consumption decreased as the temperature of pyrrhotite formation increased For partially converted samples, along the pyrite/pyrrhotite solvus, cyanide consumption was inversely related to the formation sulphur fugacity and the atomic percentage sulphur in the pyrrhotite Although significantly smaller in magnitude, thepyrrhotite cyanide consumption pracowniatekstowapl09/05/2020· Cyanide consumption decreased by approximately 8 However without lead nitrate oxygen cannot be used to process this sulfidebearing gold ore The passive layer formed on gold grains by the dissolution of pyrrhotite cannot be avoided with oxygen as it was with lead nitratepyrrhotite cyanide consumption

  • pyrrhotite cyanide consumption

    pyrrhotite cyanide consumption Wembley Primary Gold with Pyrite Pyrrhotite Marcasite and Arsenopyrite nbsp 0183 32 Pyrite is found to some degree in most of the world s gold deposits Sulfides tend to decompose in cyanide solutions Pyrite is the most stable but when pyrrhotite is present trouble is usually experienced both in regard to cyanide consumption and gold extractionpyrrhotite cyanide consumption Wembley Primary School Gold with Pyrite Pyrrhotite Marcasite and Arsenopyrite nbsp 0183 32 Pyrite is found to some degree in most of the world s gold deposits Sulfides tend to decompose in cyanide solutions Pyrite is the most stable but when pyrrhotite is present trouble is usually experienced both in regard to cyanide consumption and gold extractionpyrrhotite cyanide consumption harenindewindnlCyanide consumption decreased by approximately 8% However, without lead nitrate, oxygen cannot be used to process this sulfidebearing gold ore The passive layer formed on gold grains by the dissolution of pyrrhotite cannot be avoided with oxygen as it was with lead nitratePyrrhotite an overview | ScienceDirect Topics

  • (PDF) Cyanidation of a pyrrhotitebearing gold ore

    Cyanide consumption decreased slightly by approximately 8% Analysis of the pyrrhotitegold ore Effect of lead nitrate addition on the leaching of a pyrrhotitebearing gold ore (CyanidationPyrrhotite crystallises as either a hexagonal or monoclinic structure, both of which can occur in ore deposits In general, pyrrhotite is not considered as a valuable mineral unless it contains considerable amounts of other metals like nickel or copper In fact it causes numerous problems in flotation including intensive oxygen consumption, which results in poor selectivity among sulphidePyrrhotite An Important Gangue and a Source forcyanide: Pyrrhotite >>> Marcasite > Arsenopyrite > Pyrite The addition of lead nitrate could have resulted in the passivation of these cyanide consumers, resulting in a decrease in the amount of cyanide consumed An increase in the pH range from 96–102 to 105–11 resulted in an 119 g/t decrease in cyanide consumption This is probably due to the fact that less cyanide is lost asv118n5a2 Test work to examine the potential for improving

  • Pyrrhotite Cyanide Consumption

    pyrrhotite cyanide consumption Wembley Primary School pyrrhotite are some of the most common The first cyanidation plant in the world was reagent consumption discharge control and amelioration specific measures Practically it would be unrealistic to affect cyanide speciation was performed throughout the 48 hour leach time as well as intensive monitoring of most leachpyrrhotite cyanide consumption As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including quarry, aggregate, and different kinds of minerals We can provide you the complete stone crushing and beneficiation plantWe also supply standalone crushers, mills and beneficiation machines as wellpyrrhotite cyanide consumption09/05/2020· Cyanide consumption decreased by approximately 8 However without lead nitrate oxygen cannot be used to process this sulfidebearing gold ore The passive layer formed on gold grains by the dissolution of pyrrhotite cannot be avoided with oxygen as it was with lead nitratepyrrhotite cyanide consumption

  • Effect of pyrrhotite reactivity on cyanidation of

    The effect of the metal to sulphur ratio in the nonstoichiometic compound, pyrrhotite, is related to the consumption of cyanide in gold leaching Reactive pyrrhotite (Fe (IX) S) is produced during the pyrolysis of refractory pyrite (FeS 2) Iron vacancies give pyrrhotite its non stoichiometric nature and determine its fugacity and hence reactivity Separate trends for cyanide consumption werecalculations in gold cyanidation The average calculated gold content of the overall sample (obtained from all the tests) is 575g/t with a variance of 005and cyanide consumption during the cyanidation of a pyrrhotitebearing gold ore as a function of lead nitrate addition The mass balance calculation on cyanide showed that the cyanideCalculations In Gold Cyanidation21/08/2020· 2Cyanide Consumption in Reaction with Associated Base Metals (1) Some gold ores contain pyrite, pyrrhotite, magnetite, copper sulfide, sulfate ore, hydroxide, oxide and other associated minerals In the crushing stage, iron powder will be produced, which will slowly react with sodium cyanide, increasing the consumption of cyanideHow is Sodium Cyanide Consumed during Gold Cyanidation

  • v118n5a2 Test work to examine the potential for improving

    cyanide: Pyrrhotite >>> Marcasite > Arsenopyrite > Pyrite The addition of lead nitrate could have resulted in the passivation of these cyanide consumers, resulting in a decrease in the amount of cyanide consumed An increase in the pH range from 96–102 to 105–11 resulted in an 119 g/t decrease in cyanide consumption This is probably due to the fact that less cyanide is lost asThe general experience in gold cyanidation research activities and plant practice is that high oxygen and cyanide concentrations improve gold leaching kinetics which in turn reduce residence time and increase throughput This paper shows how the improved preoxidation method for the pyrrhotite rich gold ore of Bounty Gold Mine has increased gold recoveries at lower reagent consumption ratesThe Influence of a Pipe Reactor to Improve PreOxidation01/11/2019· Cyanidation is the main process in gold leaching There are several parameters that affect gold recovery and cyanide consumption In this paper, the effect of the oxidative pretreatment and lead nitrate addition on the cyanidation of Zarshuran refractory gold ore containing 332 ppm Au, 109% As, and 05% sulfur were investigated Au recovery was increased from 794% to 894% in theEffect of Oxidative Pretreatment and Lead Nitrate Addition

  • Assessing a twostage heap leaching process for Platreef

    this stage is required to reduce the consumption of cyanide by the copper and nickel These metals are easily complexed by cyanide and have the effect of taking the place of the precious metals to be leached especially in cases where dilute cyanide solutions are used (Chamberlain & Pojar, 1984) However, the extent to which they consume cyanide depends on the mineral in which they occur

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