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For the bottom saprolitic nickel laterite ore, it is difficult to concentrate nickel and iron through physical beneficiation due to its low nickel and iron content and the highly distributed ...
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The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the …
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The results show that the nickel laterite deposited in Southeast Sulawesi Island, Indonesia, belongs to the typical high-nickel and low-iron garnierite-type laterite. The concentrations of nickel and iron of the nickel laterite are 1.99 wt% and 17.55 wt%, respectively. The serpentine, olivine, clay, chlorite, hematite, and magnetite are the ...
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Laterite ore is a valuable resource due to its high content of metals essential for modern technology, including nickel, iron, and cobalt. However, extracting nickel from laterite ores is challenging due to their complex mineral composition and low nickel concentrations. This study examined the leaching behavior of pre-roasted laterite ore …
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In this paper, a reductive leaching process has been developed to extract iron from laterite nickel ore acid leaching residue (LTLNO) using phosphoric acid and iron powder for the …
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2.1 Materials 2.1.1 Nickel laterite ore. The chemical composition of nickel laterite as received from Philippines employed in the study is shown in Table 1.It indicates that the nickel laterite contains 1.29 wt.% Ni, 16.31 wt.% Fe, 32.28 wt.% SiO 2 and 27.38 wt.% MgO with both high Fe/Ni of 12.64 and MgO/SiO 2 of 0.85, while the impurity …
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Nickel laterite ore is used to produce nickel metal, predominantly to manufacture stainless steel as well as nickel sulfate, a key ingredient in the batteries that drive electric vehicles. Nickel laterite production is on the rise and surpassing conventional sulfide deposits. The efficiency of mining and processing nickel laterites is defined by …
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In view of the difficulty of extracting iron from Bayer red mud, a new idea of adding laterite nickel ore into red mud was proposed to prepare a high value-added product. Toward this, the influences of laterite nickel ore on thermodynamic reaction, slagging and smelting reduction of extracting iron from red mud were studied. The …
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Laterite nickel ores are generally divided into limonitic, saprolitic, and transition layers with significant varied components in each layer . In general, the limonitic laterite ores have high iron (> 40%) but low nickel (~ 1%), which are generally adopted to treat by hydrometallurgical processes such as high-pressure acid leaching [23,24,25].
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Laterite nickel ore [] is formed by large-scale weathering and deposition of nickel bearing peridotite in tropical or subtropical areas.It is an unconsolidated, hydrous, and clay-like oxide ore, which contains elements such as iron, aluminum, and silicon. Laterite nickel deposits are mainly distributed in tropical countries within 30 degrees …
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The reduction of nickel and iron components in laterite ore was consistent with the aforementioned thermodynamic analysis. In addition, the microwave reduction performance at 800 °C for 30 min was comparable to that of conventional reduction of laterite ore at 1100 °C for 60 min (η Ni = 99.0% and η Fe = 70.8%). Obviously, …
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The first part of the experiment was the reduction of nickel laterite ore using natural gas; the reduction yielded mostly nickel metal and a small amount of iron forming fine nickel–iron particles.
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At pH = 2.5–3.5, the amount of nickel and iron dissolved for limonite ore (30% Ni, 5.6% Fe) was higher than their amount in biocontrol (1% Ni, 0.1% Fe) but in the saprolite ore, a species of hybrid bacterium, was only able to bioleach 2.5% of nickel and 6% of iron (similar to limonite).
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Nickel laterite metallurgy is a nickel metallurgy technology using nickel laterite as raw material to produce metallic nickel or other products containing nickel. In nature, nickel …
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Laterites are a type of soil, rich in aluminum, magnesium, iron or in this case nickel that formed through prolonged chemical and mechanical weathering in wet, warm, tropical …
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This was the nickel pig iron (NPI) with 2.5–5.5% Ni coming from smelting reduction of laterite in the blast furnace (B/F). In a short time, the advantages of R/K-E/F process led …
DetailsThe chemical element composition of acid-leaching tailings of laterite nickel ore is presented in Table 1. The iron in acid-leaching tailings of laterite nickel ore dissolves and ends up in the tailings after the leaching process, the iron content in acid-leaching tailings of laterite nickel ore was relatively high at 40.89 wt%.
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p. 2 Impacts of Laterite Mining of Nickel and Iron Ores on Watersheds PREMISE Open pit, contour or strip mining of laterites involves removing 1 to 2 meters of topsoil to be able to extract the laterite, limonite and saprolite deposits which occupy the soil strata from 3 to 25 meters below the ground.
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Nickel laterite mining is one of the sources of nickel-iron material used for producing steel and various materials. This mining activity leaves waste in the mine, including rocks, overburden ...
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Three nickel-cobalt laterite deposit sub-types are recognised: (1) clay silicate; (2) hydrous magnesium silicate; and (3) iron oxide -limonite deposits (Freyssinet et al., 2005; Gleeson et al ...
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Based on a brief introduction of properties of metallic nickel, it summarizes the applications of nickel, demand of nickel, resources of nickel, and metallurgical processes of laterite …
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In 2011, the nickel production in China amounted to 446 kilotons, with the proportion of electrolytic nickel and nickel pig iron (NPI) registering 41.5% and 56.5%, respectively.
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many small older iron blast furnaces were available to be transitioned to smelting calcined laterites. The production of pig iron (high-carbon material) from these blast furnaces led …
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The demand for nickel has been steadily increasing in the 21st century, primarily driven by the rising demand for electric vehicle batteries. Nickel in laterite is associated within silicate in saprolite ore and hydroxide/oxide in limonite ore. Recently, the sulfation–roasting–leaching process has been developed to address the challenges of …
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The nickel leached residue from a laterite processing plant contains in the order of 42 to 56% Fe as magnetite-like iron oxide, as well as a few % of Cr, Al and Mg. Owing to the presence of impurities, particularly Cr, …
DetailsThe process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the …
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Laterite nickel is an important nickel resource, accounting for 60% of the total nickel-based reserves. With the depletion of nickel sulfide resources, the exploration of nickel laterite ores has become increasingly important [].]. Low-grade nickel laterite ore accounts for more than half of the total nickel laterite ore, which is mainly smelted by …
DetailsThis study purpos es of recovering HPAL residue as iron raw. materials. This study purpose ma y support the decrease of iron ore import from other. countries due to the low quality of local iron ...
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The raw materials used in this study were red mud, laterite nickel ore, coke and lime. The chemical compositions of red mud and laterite nickel ore are shown in Table 1.The proximate analysis of the coke is shown in Table 2.The content of CaO in the lime is 97.06 wt.%.The free moisture content and size-sieve analysis of all the raw …
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Nickel laterite ores account for 64 % of the global nickel ore supply and are widely distributed in equatorial area (Ilyas et al., 2020, Lei et al., 2020, Zhang et al., 2015). These minerals are mainly produced through the long-term weathering of ultramafic rocks ( Lv et al., 2021 ), which mainly contain serpentine laterite ores and limonitic ...
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A typical pyrometallurgical process for nickel recovery involves pre-calcination of laterite ore in rotary kiln to remove moisture and chemically-bonded water, and subsequent pre-reduction in kiln ...
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In this study, an improved direct reduction and magnetic separation process was proposed by addition of low-nickel concentrates as nucleating agent combined with low quantity …
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It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., (1961) and …
DetailsThe proportion of nickel and iron in ferronickel concentrate was 88.7% (metal Ni-8.62%, metal Fe-80.1%), and the recovery efficiency of nickel and iron are 98.8% and 82.4%, respectively.
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Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …
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Laterite nickel ore is a valuable resource of nickel and iron, formed through extended and deep weathering of ultra-ferric rocks containing nickel silicates, typically found in tropical or subtropical regions. About 70 % of the Earth's nickel resources are located in laterite nickel ore deposits.
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Carbothermic Reduction of Nickeliferous Laterite Ores for Nickel Pig Iron Production in China: A Review MINGJUN RAO,1 GUANGHUI LI,1,2 TAO JIANG,1 JUN LUO,1 YUANBO ZHANG,1 and XIAOHUI FAN1 1 ...
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Primary world nickel production in 2020 was 2430.7 kt Ni; 69% (1677.7 kt) of them came from oxidized nickel ores (laterites) and 31% from sulfides. Production-wise, 87.7% of …
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One of nickel laterite processing is leaching in sulfuric acid solution. To produce a product with high levels of the metal nickel-metal impurities that come dissolved, particularly iron must be removed first from the results of the leaching solution. After separating the iron, nickel is deposited so that an intermediate product is produced in ...
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