Sulfide Ore Leaching

Sulfide Ore Leaching

  • Sulphide Leaching Mineral Processing & Metallurgy

    24/06/2015· Methods of leaching sulphide ores can be: in absence of oxidizing agents; in presence of oxidizing agents; Bacterial leaching Sulphide Leaching system;In the present investigation the leaching mechanism of a NiCuCosulphide concentrate has been studied in an oxidative pressureacid medium The ore consisted of pyrrhotite, pentlandite and chalcopyrite with gangue minerals mostly pyroxenes The dissolution of the valuable minerals was achieved effectively after mechanical activation, followed by leaching From the Mössbauer spectra itThe Leaching of a Sulphide Ore — A MÖssbauer and Sem

  • Sulphide Gold Ore Treatment by Leaching and Flotation

    18/04/2016· Sulphide Gold Ore Treatment by Leaching and Flotation Process Post navigation Previous Next Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net return This latter point is most important In many cases a gold mill using an allcyanide flowsheet25/07/2018· Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chlorideferrous media at two temperatures The study focused on whether this chemical leaching system could be applied at an industrial scale Leaching tests were conducted in columns loaded with approximately 50 kg ofLeaching of Primary Copper Sulfide Ore in Chloride

  • (PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE |

    LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P Castillano, Wilfredo T Gatdula Jr, Gin Derick L Magno, Jhunalyn H Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized conditionA low grade sulphide ore leaching could be contemplated using an oxidative / bacterial heap leach Another option is to concentrate the sulphides using flotation, then atmospheric or pressureWhat is the best method for sulfide copper leaching?

  • WOA1 Sulfide ore leaching process Google Patents

    The present invention discloses a new process for leaching sulfide minerals consisting of leaching crushed ore in a vat reactor, wherein the leaching solution is fed with an ORP value close to the upper limit suitable for leaching and the exiting leaching solution leaves the reactor with an ORP above the lower limit suitable for leaching the oreLEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P Castillano, Wilfredo T Gatdula Jr, Gin Derick L Magno, Jhunalyn H Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition(PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE |

  • Industrial Heap Bioleaching of Copper Sulfide Ore Started

    22/11/2021· The mining and truck stacking of one leaching cell took about two months The ore was slightly acidified to about pH of 35–40 during this period with the sulfide minerals oxidation by water and air It was proved that sulfide minerals, including pyrite and the copper sulfides were oxidized under the moisture condition [21,22] PyriteMD SOKIĆ et al: ACID LEACHING OF OXIDESULFIDE COPPER ORE Hem ind 69 (5) 453–458 (2015) 455 tion (25 dm3), and the time of leaching was measured The solution samples were taken in a predetermined time intervals for chemical analysis on Cu2+, Fe2+ and Zn2+ After completing the leaching process, solid resi due was filtered, than washed and further processed by flotation in orderAcid leaching of oxide–sulfide copper ore prior the

  • Leaching of Copper Sulphides SAIMM

    Ferric sulphate leaching of secondary sulphide ores has been successfully commercialised at the Cobre Las Cruces (CLC) and Sepon copper plants Cobre Las Cruces More detail on the development of this project is outlined in the project development section of this paper The final CLC leaching parameters defined through test work, process design, optimisation and validation are summarised inA method for leaching one or more target metals from a sulfide ore and/or concentrate containing such, the method comprising the steps of: (a) Exposing the ore and/or concentrate to an aqueous solution of chlorinebased oxidising species in which the hypochlorous acid comprises at least 10 mol % of the chlorinebased oxidising species; (b) Allowing and/or facilitating the oxidation of theMETHOD OF OXIDATIVE LEACHING OF SULFIDE ORES AND/OR

  • Guides For Highsulfide Gold Processing

    17/03/2020· High sulfide gold ore refers to a certain gold ore with 20% 30% of gold wrapped by sulfide (mainly pyrite) Because most of the gold in highsulfide gold ore exists in the form of sulfideencapsulated gold, when using direct leaching process, the consumption of gold leaching agent and cost of gold leaching production will increase, and gold processing efficiency is not good26/06/2017· The traditional route for extracting copper from sulfide ores is smelting Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical Smelting is increasingly expensive because, in general, smelters require a content of more than 25 per centA fresh approach to sulfide ores CIM

  • Copper Mining and Extraction Sulfide Ores

    The smelter for sulfide ores produces sulfur dioxide gas This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores Scrubbing sulfur dioxide also protects the environment For example: FeO(s) + SiO 2 (s)→ FeOSiO 2 (slag) This is very similar to the removal of impurities in the blast furnace The liquidAcid leaching (eg sulfide ore) Chemistry Leaching is done in long pressure vessels which are cylindrical (horizontal or vertical) or of horizontal tube form known as autoclaves A good example of the autoclave leach process can also be found in the metallurgy of zinc It is best described by the following chemical reaction: 2ZnS + O 2 + 2H 2 SO 4 → 2ZnSO 4 + 2H 2 O + 2S This reactionLeaching (metallurgy)

  • METHOD OF OXIDATIVE LEACHING OF SULFIDE ORES AND/OR

    A method for leaching one or more target metals from a sulfide ore and/or concentrate containing such, the method comprising the steps of: (a) Exposing the ore and/or concentrate to an aqueous solution of chlorinebased oxidising species in which the hypochlorous acid comprises at least 10 mol % of the chlorinebased oxidising species; (b) Allowing and/or facilitating the oxidation of the26/06/2017· The traditional route for extracting copper from sulfide ores is smelting Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical Smelting is increasingly expensive because, in general, smelters require a content of more than 25 per centA fresh approach to sulfide ores CIM

  • Sulfide Ore Processing « TCB Metals and Refining

    Processing Sulfide Ores Historically, miners have shipped their sulfide concentrates to overseas smelters that have little to no regulations or emissions controls However, with the implementation of the Mercury Export Ban of 2008 and the high costs of installing equipment to prepare sulfide ores for cyanide leaching, many companies are searching for alternative forms of processing theirThe smelter for sulfide ores produces sulfur dioxide gas This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores Scrubbing sulfur dioxide also protects the environment For example: FeO(s) + SiO 2 (s)→ FeOSiO 2 (slag) This is very similar to the removal of impurities in the blast furnace The liquidCopper Mining and Extraction Sulfide Ores

  • Bioprocessing of a saline, calcareous copper sulfide ore

    01/08/2018· Sequential leaching was applied successfully using a “composite” (sandstone plus black shale) ore column, which mimicked the flow circuit in a DISB, and included a bleed stream where soluble copper was removed from the pregnant leach solutions generated by sulfide precipitation Water leaching was shown to cause partial disintegration and lowering of the resistance of the sandstoneI Leaching a sulfide ore with an acidic FeC13 solution to form insoluble silver and lead chlorides A portion of the zinc is also extracted: Ag2S + 2 FeC13 + 2 AgCl (A) PbS + 2 FeC13 + PbC12 (B) ZnS + 2 FeC13 + ZnC12 (C) 2 Solubilizing the silver and gold with an acidified thiourea leach solution and then recovering the gold and silver wLth ionexcbange resin aluminum precip­ itation, orRecovery of Silver, Gold, and Lead From a Complex Sulfide

  • Leaching (metallurgy)

    Acid leaching (eg sulfide ore) Chemistry Leaching is done in long pressure vessels which are cylindrical (horizontal or vertical) or of horizontal tube form known as autoclaves A good example of the autoclave leach process can also be found in the metallurgy of zinc It is best described by the following chemical reaction: 2ZnS + O 2 + 2H 2 SO 4 → 2ZnSO 4 + 2H 2 O + 2S This reactionThe method of obtaining gold from goldbearing sulfide crushed ore after opening bacterial leaching or oxidized by roasting or pressure oxidation, including leaching solution containing thiosulfate ions sorption complex thiosulfategold on strongbase anion exchange resin, the separation of the strongbase anionexchange, elution of the complex thiosulfategold solution containing polythionateMethod of gold extraction from sulphide goldbearing ores

  • Microbes and mineral recovery: Bioleaching of copper, gold

    The leaching of sulfide minerals distinguishes bioleaching from conventional acid leaching Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium •Recovery of metals from low and lean grade ores using20/08/2015· This would result in a dramatic expansion of the technology as ~80% of total ore types are sulfide in nature Heap Leaching, at first sight, seems to be a relatively simple technology, but is inHeap Leach: Mining's breakthrough technology

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