limonitic nickel ore

limonitic nickel ore

limonitic nickel ore

  • Lateritic nickel ore deposits - Wikipedia

    OverviewExtractionGenesis and types of nickel lateritesOre depositsSee also

    Nickel laterites are a very important type of nickel ore deposit. They are growing to become the most important source of nickel metal for world demand (currently second to sulfide nickel ore deposits). Nickel laterites are generally mined via open cut mining methods. Nickel is extracted from the ore by a variety of process routes. Hydrometallurgical processes include high-pressure acid leach (HPAL) and heap leach, both of which are generally followed by solvent extraction - electrowinning (SX-EW) for rec

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  • Limonite - Wikipedia

    OverviewNamesCharacteristicsFormationUses of limoniteHistorySee alsoExternal links

    Limonite is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as FeO(OH)nH2O, although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the three principal iron ores, the others being hematite and magnetite, and has been mined for the production of iron since at least 2500 BCE.

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  • DIRECT REDUCTION OF NICKEL LATERITE LIMONITIC ORE USING

    aiming limonitic nickel ore extraction but the productiv - ity level achieved is low, while the operational costs are too high [6 - 9]. However, the nickel recovery is about 80 % and which is why the process is not economically viable [7]. Hence, many researchers have examined new methods for treating laterite nickel ore including a pyro

  • High pressure acid leaching of a refractory lateritic ...

    Highlights Leaching temperature, leaching duration, sulfuric acid to ore weight ratio and particle size of the limonitic nickel laterite ore were studied. Optimum parameters determined as 255 o C, 0.30 sulfuric acid to ore weight ratio, a particle size of 100% −850μ, 1 h of leaching duration with 30% w/w. 87.3% of Ni and 88.8% of Co in the ore extracted into the PLS but, found to be below ...

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  • A Study on Classification of Limonite and Saprolite from ...

    Nowadays, RKEF and sintering-blast furnace gradually become the primary processes for saprolite laterite (Ni>1.5 wt.%) and limonitic laterite ore(0.8∼1.2 wt.% Ni, Fe>40 wt.%) to produce ferro ...

  • Effect of activation pretreatment of limonitic laterite ...

    Limonitic laterite exists in the top layer, which mainly consists of iron oxide/oxyhydroxide with iron content higher than 40%. Moreover, limonitic laterite ores account for a large proportion, which is almost twice that of the other two layers (saprolite and garnierite) (Dalvi et al., 2004, Kempthorne and Myers, 2007). However, the mineral ...

  • Screening and reduction roasting of limonitic laterite and ...

    The nickel content also increased slightly, while cobalt content decreased. From the data of Table 3, about 50% silicon can be removed to the coarse fraction by screening at 74 μm. The mass percentages of iron, nickel and cobalt distributed in Ore I are 85.3%, 85.0% and 56.3%, respectively.

  • Recovery of nickel and cobalt as MHP from limonitic ore ...

    During sulfuric acid leaching of limonitic ore, nickel, cobalt, iron, manganese and other acid soluble minerals are dissolved. T he pregnant leach solution (PLS) usually contains iro n ions in ...

  • Teck's CESL Nickel Process: Advancing Towards a Commercial ...

    Disseminated nickel ore bodies are widely distributed around the world and are found in most of the known nickel sulphide districts. Teck has developed a novel hydrometallurgical process for treating ... balance of nickel supply comes from limonitic and saprolitic laterite deposits which represent an abundant nickel resource. [1,15]

  • Extraction of nickel and cobalt from reduced limonitic ...

    Reduced ore samples were obtained from the reduction roasting of a limonitic laterite. The extraction of nickel and cobalt from the reduced ore was conducted by selective chlorination in the temperature range of 300–500 °C using aluminum chloride hexahydrate as the chlorination agent, and followed by water leaching at 80 °C.

  • Kinetics on roasting reduction of limonitic laterite ore ...

    Chemical compositions of the limonitic laterite ore from Sulawesi, Indonesia were taken from the previous study by Astuti et al. (2012) and the reductant composition is presented in Table 1.The initial crystals of the laterite ore are shown in Fig. 1 and quartz (SiO 2), serpentine (Mg 3 Si 2 O₅(OH) 4), and goethite (FeOOH) were found in the sample.To verify the mineral content of the ...

  • (PDF) Pressure Leaching of Limonitic Laterite Ores in H 2 ...

    A limonitic laterite ore from Indonesea was treated by pressure leaching in H2SO4-Mg(NO3)2 medium, using Mg(NO3)2 as an oxidant. Experiments were conducted in order to determine the optimum ...

  • Teck's CESL Nickel Process: Advancing Towards a Commercial ...

    Disseminated nickel ore bodies are widely distributed around the world and are found in most of the known nickel sulphide districts. Teck has developed a novel hydrometallurgical process for treating ... balance of nickel supply comes from limonitic and saprolitic laterite deposits which represent an abundant nickel resource. [1,15]

  • (PDF) The kinetic study of limonitic low grade nickel ore ...

    The kinetic study of limonitic low grade nickel ore leaching using hydrochloric acid Article (PDF Available) in IOP Conference Series Materials Science and Engineering 478:012009 February 2019 ...

  • Extraction of nickel from lateritic ores at atmospheric ...

    Atmospheric leaching of nickel from limonitic laterite ores is regarded as a promising approach for nickel production, despite its low nickel recovery and slower leaching rate than high pressure ...

  • KINETIC MODELS OF NICKEL LATERITE ORE LEACHING PROCESS ...

    The subject of this study is leaching process of nickel-bearing laterite ore from Ržanovo, R. Macedonia. The influence of sulfuric acid concentration (0.5, 1 and 3 M H2SO4) on the extracted Ni (%, wt.) was studied. The leaching process intensified by magnetic stirring at different temperatures (298, 323, 348 and 363 K) in the time interval of 120 min. was performed.

  • v117n7a11 Laboratory-scale smelting of limonitic laterite ...

    Laboratory-scale smelting of limonitic laterite ore from Central Anatolia by S. Pournaderi*, E. Keskinkılıç†, A. Geveci‡, and Y.A. Topkaya‡ $ 79/5;5 The feasibility of ferronickel production from a low-grade limonitic laterite ore was investigated. The ore was

  • PAPER OPEN ACCESS The kinetic study of limonitic low grade ...

    The kinetic study of limonitic low grade nickel ore leaching using hydrochloric acid To cite this article: H S E A Gustiana et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 478 012009 View the article online for updates and enhancements. This content was downloaded from IP address 207.46.13.135 on 07/04/2020 at

  • Extraction of nickel from lateritic ores

    Overall acid consumptions of ores were calculated as 669 kg H2SO4/ton dry ore for nontronitic type nickel ore and 714 kg H2SO4/ton dry ore for limonitic type nickel ore. Column leaching experiments also showed that nickel and cobalt could be extracted from both ore types by heap leaching.

  • PAPER OPEN ACCESS Effect of concentration, agitation, and ...

    limonitic nickel ore leaching using hydrochloric acid S Oediyani 1, U Ariyanto , and E Febriana2 1Metallurgical Engineering Department, Faculty of Engineering, Sultan Ageng Tirtayasa University, Cilegon 42435, Indonesia 2LIPI, Serpong, Indonesia E-mail: [email protected]

  • Limonitic - definition of limonitic by The Free Dictionary

    limonite (lī′mə-nīt′) n. Any of a group of widely occurring yellowish-brown to black iron oxide minerals, essentially FeO(OH)nH2O, used as a minor ore of iron. [Originally, bog iron ore, from German Limonit (coined on the model of German Wiesenerz : Wiesen, meadow + Erz, ore) : Greek leimōn, meadow, moist grassy place (of unknown origin ...

  • Atmospheric pressure leaching application for the recovery ...

    Low-grade nickel ore Mineralogical analysis showed that the low-grade nickel ore contained lizardite 1T, which is a serpentine nickel-bearing mineral at a grade of 0.1% Ni (Table II). The dominant mineral in the ore was found to be iron-bearing enstatite and other gangue minerals: biotite, diopside, forsterite, anorthite, and quartz.

  • Column Leaching of Greek Low-Grade Limonitic Laterites

    various Australian nickel laterites, which were agglomerated with the use of water and sulfuric acid in a rotating drum. The leaching solution contained 200 g/L H2SO4 while no recycling was involved. Depending on the ore mineralogy, extractions of 10–98% for Ni and 12–97% for Co were obtained after 120 days of leaching.

  • US10053750B2 - Recovery of nickel in leaching of laterite ...

    The invention provides a process for the leaching of a laterite ore or concentrate for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore. Nickel is extracted with an oxime at a lower pH than other processes for extraction of ...

  • Limonitic - definition of limonitic by The Free Dictionary

    limonite (lī′mə-nīt′) n. Any of a group of widely occurring yellowish-brown to black iron oxide minerals, essentially FeO(OH)nH2O, used as a minor ore of iron. [Originally, bog iron ore, from German Limonit (coined on the model of German Wiesenerz : Wiesen, meadow + Erz, ore) : Greek leimōn, meadow, moist grassy place (of unknown origin ...

  • Atmospheric pressure leaching application for the recovery ...

    Low-grade nickel ore Mineralogical analysis showed that the low-grade nickel ore contained lizardite 1T, which is a serpentine nickel-bearing mineral at a grade of 0.1% Ni (Table II). The dominant mineral in the ore was found to be iron-bearing enstatite and other gangue minerals: biotite, diopside, forsterite, anorthite, and quartz.

  • Column Leaching of Greek Low-Grade Limonitic Laterites

    various Australian nickel laterites, which were agglomerated with the use of water and sulfuric acid in a rotating drum. The leaching solution contained 200 g/L H2SO4 while no recycling was involved. Depending on the ore mineralogy, extractions of 10–98% for Ni and 12–97% for Co were obtained after 120 days of leaching.

  • US10053750B2 - Recovery of nickel in leaching of laterite ...

    The invention provides a process for the leaching of a laterite ore or concentrate for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore. Nickel is extracted with an oxime at a lower pH than other processes for extraction of ...

  • Factors Affecting the Upgrading of a Nickeliferous ...

    ore combined together to form olivine ((Mg,Fe,Ni)2SiO4), and Ni2+ was substituted for Mg2+ in the silicate matrix. The activity of nickel oxide in the silicate solid solution is low, and this explained the poor reducibility using gaseous reductants. The effect of precalcination on the reducibility of the limonitic ore in a H2/CO2 atmosphere

  • Factors Affecting the Upgrading of a Nickeliferous ...

    ore combined together to form olivine ((Mg,Fe,Ni)2SiO4), and Ni2+ was substituted for Mg2+ in the silicate matrix. The activity of nickel oxide in the silicate solid solution is low, and this explained the poor reducibility using gaseous reductants. The effect of precalcination on the reducibility of the limonitic ore in a H2/CO2 atmosphere was

  • GLYCINE AS A LIXIVIANT FOR THE LEACHING OF LOW GRADE ...

    processing of low grade, c omplex ore bodies that contain impurities such as copper, arsenic, antimony, nickel and zinc which are detrimental to the cyanide process. Copper-containing gold ores are an important source of both copper and gold as they are obtainable in huge deposits in many countries throughout the world.

  • Unlocking Disseminated Nickel Sulphides using the CESL ...

    world’s nickel supply is derived from sulphide resources and almost all of the sulphides utilized now are massive sulphide ores, as opposed to disseminated sulphides.[1] The balance of nickel supply comes from limonitic and saprolitic laterite deposits which represent an abundant nickel resource.

  • improvement limonite nickel ore with sintering process

    Limonitic Nickel Ore improvement limonite nickel ore with sintering process More details: as one of the largest mining and crushing equipments manufacturers and vendors Read more... know more dahlonega georgia with limonite In the Dahlonega gold belt in , gold ore limonite Georgia gold was mined from limonite-rich , SLN mined limonite ...

  • Japan PI Club advises on safe carriage of nickel ore ...

    The ore in the area comes in three qualities. Lateritic nickel content 0.9%; Limonitic nickel content 1% to 1.5%; Saprolitic nickel content 1.5% to 2%; The levels of nickel content as can be seen are low, also it should be remembered the cargo is traded per wet metric tonne

  • Separation of iron-nickel alloy nugget from limonitic ...

    Nickel laterite ores generally consist of three main layers [3]. The layer close to the surface is the limonitic ore body, the layer near to the bottom of the ore body is the saprolitic ore body, and the limonitic ore can be separated from the saprolitic ore by a transition zone. Because of the low nickel

  • William Anthony - Short Range Mine Planning EIT - Canadian ...

    One possible solution is to selectively reduce the nickel oxide in the ore, which could then be upgraded by, for example, magnetic concentration. In this article, a thermodynamic study was performed on the reduction of a limonitic laterite ore by methane. Methane was selected as the reducing agent as it

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  • An Analysis of the Fractional Distribution of the ...

    An Analysis of the Fractional Distribution of the Substantial Composition of Limonitic Nickel Ore from Punta Gorda, Moa, Holguin, Cuba G. Agyei A. H. Flores A.R. Purón Keywords: Theory of Separation, Fractional Distribution Function, Laterite, Nickel Abstract. This paper evaluates the mass and content distribution of the lateritic ore supplied ...

  • Enhanced methods for nickel recovery from low-grade ores ...

    All nickel ores have relatively low nickel content, the classification is as follows: high-grade nickel ore has Ni content greater than 1.8%, middle-grade nickel ore has Ni content between 1.3-1.7%, low-grade nickel ore has Ni content between 0.6-1.2%. Nickel is continuously mined, even at these low percentages of ores, because it is in high ...