atmospheric ammonia leach matte

2015-02-06T02:02:12+00:00

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  • (PDF) ATMOSPHERIC LEACHING OF MATTE AT THE PORT NICKEL

    The results obtained revealed that the recovery of nickel and copper from the matte was greatly influenced by the concentration of ammonia, leaching time, leaching

  • Estimated Reading Time: 9 mins
  • A study on the oxidative ammonia/ammonium sulphate

    May 01, 2007  Our recent study on atmospheric ferric chloride leaching of matte resulted in more than 90% leaching efficiency of Cu, Ni and about 85% of Co using 15 M FeCl 3, 03 M HCl, 90 °C and 7 h (Park et al, 2006) In the present work, the extraction behavior of Cu, Ni and Co from a synthetically prepared matte has been studied in ammoniacal ammonium

  • Cited by: 96
  • The Effect of Leaching Time and Ammonia Concentration on

    The effects of ammonia concentration and leaching time were investigated to determine the optimum leaching conditions The experiments were conducted in a leaching cell submerged in a water bath, with ammonia concentrations of 15 M, 20 M, 25 M and 30 M and varying leaching time from 0 to 300 min NiCu matte containing 23% by mass Cu was

  • Atmospheric oxidative and nonoxidative leaching of NiCu

    and ammonia leaching has been based on local conditions or the composition of the matte Acid leaching has been used for mattes with substantial cobalt contents (above 3%), while ammonia leaching has been widely used for NiCu mattes with low cobalt contents (Pearce et al, 1960) However, with further developments in acid pressure leaching

  • Outotec’s Innovative Nickel Matte Leach Process E MJ

    Outotec, in fact, said it has constantly been developing new, sustainable, and economically viable nickel processing methods—and its nickel matte chloride leaching process is designed to leach matte in atmospheric OKTOP reactors using hydrochloric acid and oxygen, as well as ammonia for pH control

  • Ammonia/nitric Acid Leaching of Copper Cobalt Oxidized Ore

    reported that, copper from Cu matte can Nieasily been leached by using ammonia at atmospheric condition Ammonia leaching is also selective in that it will not dissolve all available nonspecific metals, such as iron and manganese, along with the copper or cobalt, as sulphuric acid does More Ammonia leaching can be used in nonoxidative,

  • Parametric Effects on Leaching Behavior of NickelCopper

    ture, leaching time, ammonia concentration, and pH) on the leaching behavior of NiCu matte were investigated The temperature range studied was between 50 Cand70C, ammonia concentration was varied from 15, 20, 25, to 30M, while the leaching time ranged from 0 to 300min The stirring speed was kept constant at 410rpm, while the

  • (PDF) Parametric Effects on Leaching Behavior of Nickel

    By introducing an acid preleaching process into the oxidative ammonia leaching process, we achieved the high extraction efficiencies of 9803%, 9913%, and 8560% for the valuable metals Ni, Cu

  • Refining of Nickel Copper Cobalt Mattes by Pressure

    Jun 05, 2020  Iron removal: the solutions derived from leaching with ammonia – ammonium sulphate are iron free, and the leach slurry requires only liquidsolid separation If the iron content of the feed matte is low, as in matte Nos 1 and 3, direct filtering in pressure filters is indicated

  • Nickel Laterites in SE Asia CSA Global

    Atmospheric leach Heap leach Sorowakosmelter, Indonesia Matte smelting 14 Ammonia leaching 14 Acid leaching 12 2008 Figures CSA, CRU Analysis World Nickel Production by Ore Type 300% 320% 340% 360% 380% 400% 420% 440% 460% 480% 500% 0 100 200 300 400 500 600 700 800 900 1990 1995 2000 2005 2009 % tonnes Ni ('000) Lateritic Ni

  • Ammonia/nitric Acid Leaching of Copper Cobalt Oxidized Ore

    reported that, copper from Cu matte can Nieasily been leached by using ammonia at atmospheric condition Ammonia leaching is also selective in that it will not dissolve all available nonspecific metals, such as iron and manganese, along with the copper or cobalt, as sulphuric acid does More Ammonia leaching can be used in nonoxidative,

  • ASSESSING THE PERFORMANCE AND CAPACITY OF MATTE

    3 Nickel Atmospheric Leaching The process configuration for the nickel atmospheric leaching section is shown in Figure 2 Matte and spent electrolyte is fed to the first reactor Oxygen is sparged into the tank Hofirek and Kerfoot (1992) have described the chemistry of the nickel atmospheric leaching

  • (PDF) Parametric Effects on Leaching Behavior of Nickel

    By introducing an acid preleaching process into the oxidative ammonia leaching process, we achieved the high extraction efficiencies of 9803%, 9913%, and 8560% for the valuable metals Ni, Cu

  • Recover PGM by Matte Smelting and Leaching

    Jan 06, 2021  Since prevention of atmospheric pollution by SO2 is a costly processing step, direct leaching of the green matte to extract metal values without SO2 evolution is a desirable alternative Impala Platinum, Ltd, the Western World’s second largest platinum producer, is located on the Merensky Reef in the Republic of South Africa and beneficiates

  • An Investigation into the Effect of Temperature on the

    the temperature and the reaction involved on the leaching of coppermatte Copper (Cu) bearing matte from Impala Refinery (Pty) Ltd was used in the investigation The experiments were conducted in a leaching cell submerged in a water bath, with ammonia concentrations (leaching solution) of 30M, temperature of 50˚C,

  • Atmospheric acid leaching of nickel copper matte from

    Atmospheric acid leaching of nickelcopper matte from Impala Platinum Refineries The preleach stage in the second process route alternative, described above, is the subject of this study The study investigates the leaching behaviour of Ni–Cu matte in H2SO4CuSO4 solution during the repulping stage at Impala Platinum Refinery

  • Nickel Laterites in SE Asia CSA Global

    Atmospheric leach Heap leach Sorowakosmelter, Indonesia Matte smelting 14 Ammonia leaching 14 Acid leaching 12 2008 Figures CSA, CRU Analysis World Nickel Production by Ore Type 300% 320% 340% 360% 380% 400% 420% 440% 460% 480% 500% 0 100 200 300 400 500 600 700 800 900 1990 1995 2000 2005 2009 % tonnes Ni ('000) Lateritic Ni

  • Why heap leach nickel laterites?

    ferronickel product or converting to a low ironcontaining matte Outside of China where there are 2 atmospheric leach project and a small heap leach the only operational hydrometallurgical processes are High Pressure Acid Leaching (HPAL) 22 Pyrometallurgical For all pyrometallurgical nickel laterite operations the ore must

  • COBALT PROCESSING DEVELOPMENTS K G Fisher Bateman

    the sulphides), sulphuric acid atmospheric leach and direct copper EW; plus impurity • ammonia leach, eg the SherrittGordon process which produces LME grade Environmental pressure on the matte smelting operations has lead to the development of

  • Titanium MetalSeated Ball Valves for HPAL and POX Plant

    ammonia leach process, along with sulphate oxidative leach (licensed by Sherritt to Outokumpu in 1961), and chlorine leach, have been commonly used for refining nickel matte (~70% Ni) after the concentrates have already been smelted12 Due to nickel economics and the complexity of the technology, Moa Bay

  • A comparative study of different le aching processes for

    route to produce CuNiCoFe rich matte and Mn slag [18], l fo lowed by leach reagableents [19ing witt suih 21]e present p th In pera we have made a comparison study of three different leaching processes (H 2 SO 4 /oxygen pressure leaching, atmospheric FeCl 3 leaching, NH 4 OH/(NH 4) 2 SO 4 pressure leaching) carried out in our labo

  • Efficient Synchronous Extraction of Nickel, Copper, and

    Jun 18, 2020  A study on the oxidative ammonia/ammonium sulphate leaching of a complex (Cu–Ni–Co–Fe) matte Hydrometallurgy 86 , 164–171 (2007) CAS Article Google Scholar

  • Treatment of NickelCobalt Laterites

    Yabulu reduction roastammonia leach PT Inco matte smelting Sample Pages Notes 1 Nickel and cobalt can usually be solubilized from laterites using sulphuric acid at atmospheric pressure, just below boiling point However, this generally requires a massive quantity of acid, which

  • ALTA Short Course Outline NickelCobalt Laterites

    Atmospheric agitated tank leaching Sulphuric acid leaching Chloride leaching Nitric acid leaching Segregation roasting Break Other c ommercial treatment processes Reduction roast ammonia leach (caron) process Ferronickel and matte smelting Nickel pig iron smelting Previously proposed processes Sulphation roast Republic

  • A New Method of MATTE REFINING by pressure leaching and

    Jan 12, 2017  A New Method of MATTE REFINING by pressure leaching and hydrogen reduction F A Forward: Ammonia Pressure Leach Process for Recovering Nickel, Copper and Cobalt from Sherritt Gordon Nickel Sulphide Concentrate, Trans, Canadian Institute of Mining and Metallurgy,

  • A comparative study of different le aching processes for

    route to produce CuNiCoFe rich matte and Mn slag [18], l fo lowed by leach reagableents [19ing witt suih 21]e present p th In pera we have made a comparison study of three different leaching processes (H 2 SO 4 /oxygen pressure leaching, atmospheric FeCl 3 leaching, NH 4 OH/(NH 4) 2 SO 4 pressure leaching) carried out in our labo

  • Treatment of NickelCobalt Laterites

    Yabulu reduction roastammonia leach PT Inco matte smelting Sample Pages Notes 1 Nickel and cobalt can usually be solubilized from laterites using sulphuric acid at atmospheric pressure, just below boiling point However, this generally requires a massive quantity of acid, which

  • ALTA Short Course Outline NickelCobalt Laterites

    Atmospheric agitated tank leaching Sulphuric acid leaching Chloride leaching Nitric acid leaching Segregation roasting Break Other c ommercial treatment processes Reduction roast ammonia leach (caron) process Ferronickel and matte smelting Nickel pig iron smelting Previously proposed processes Sulphation roast Republic

  • KELARUTAN NIKEL PADA PROSES PELINDIAN NICKEL

    In this research, ammonia – ammonium nitrate solution was used as a leaching agent Nitrate can oxidize sulfur to be sulfate and releasing ion nickel, whereas ammonia can bind nickel ion to form complex amine nickel compound The leaching of nickel matte was studied under various experimental conditions at room temperature and atmospheric

  • Atmospheric pressure leaching of nickel from a lowgrade

    The acid consumed by the leaching of FeO in reaction (1) is regenerated by hydrolytic reactions (3) and (4) (Chang et al, 2016) This study focused on atmospheric pressure acid leaching of a lowgrade nickelbearing ore, obtained from tuff oxides of Sarbisheh, Iran After chemical and mineralogical analysis, the preliminary

  • Ammonia US EPA

    Jan 21, 2021  Ammonia (NH 3) is a common toxicant derived from wastes (see Figure 1), fertilizers and natural processes Ammonia nitrogen includes both the ionized form (ammonium, NH 4+) and the unionized form (ammonia, NH 3 ) An increase in pH favors formation of the more toxic unionized form (NH 3 ), while a decrease favors the ionized (NH 4+) form

  • PRODUCTION United Nations Environment Programme

    atmospheric emissions 61 : vii2 liquid effluents : 61 vii3 falconeridge matte chlorine leach process 86 24 outokumpu sulphate leach process 88 pressure carbonyl process 90 27 inco ltd nickelcopper matte separation process 92 28 s1{erritt gordon ammonia leach process 93 29 capital and annual operating costs for

  • WOA1 Process for producing refined nickel and

    leach solution cobalt ammonia Prior art date Application number PCT/AU2014/ Other languages French (fr) Inventor Scott Perry Original Assignee Bhp Billiton Nickel West Pty Ltd Priority date (The priority date is an assumption and is not a legal conclusion

  • Saturday 23 May to Saturday 30 May

    Reduction RoastAmmonia Leach (Caron) Process Smelting Processes Ferronickel and Matte Smelting Nickel Pig Iron Smelting Ore Characterization and Process Implications Idealized Orebody Profile 10:30am Atmospheric Leaching of Nickel Laterites with

  • Metallurgy The Canadian Encyclopedia

    Feb 07, 2006  In the leaching process, developed by Sherritt Gordon Ltd and used at Fort Saskatchewan, Alberta, the sulphide concentrate is mixed with an ammonialeaching solution and oxygen, with compressed air at 689–758 kilopascals (kPa) and heated to 80°C The nickel, copper and cobalt present in the concentrate form soluble ammonia complexes The

  • USB2 Resininleach process to recover nickel and

    A hydrometallurgical resininleach (RIL) process for directly recovering nickel and/or cobalt Simultaneous pulp leaching by adding an acid or base, dissolves the metals of interest with adsorption of the metals rendered soluble in on ionic exchange resin Following elution of the changed resin, purification of nickel and cobalt present in the eluate can be recovered by conventional methods

  • Process for cobalt recovery from mixed sulfides INCO Ltd

    The ammonia content of the initial material can be removed and recovered by known methods The leach slurry is subjected to oxidative leaching at atmospheric pressure using air as an oxidant and with good agitation The leaching process occurs at a pH which is essentially neutral to only slightly acidic

  • Marja RiekkolaVanhanen Finnish expert report on best

    The Finnish Environment 317 7 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a a a a General Information 11 General Nickel is a silver white metal with typical metallic

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