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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Laterite ores occur as surface deposits and are traditionally separated into two main types: limonites (lower nickel, high iron) and saprolites (higher nickel, low iron). Limonites typically have cobalt as an additional value component, while saprolite is treated for its nickel value only.
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Nickel laterite is formed by the weathering of nickel-bearing silicate minerals such as peridotite, dunite and harzburgite.These minerals are magnesium silicates containing iron, nickel, cobalt and minor concentrations of platinum and palladium (PGM). Weathering results from the surface exposure of these easily altered minerals to sunlight and ...
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Laterite is a soil type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and prolonged weathering of the underlying parent rock, usually when there are conditions of high temperatures and …
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The two main processing methods for laterite ores are smelting and High-Pressure Acid Leaching (HPAL). Smelting is used primarily on saprolite ores to obtain …
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The second principle of ferronickel smelting is that laterite ores cannot be smelted to nickel metal alone, i.e., separately from iron. This is because (1) garnierite concentrates always contain 5–10 times more Fe than Ni and (2) oxygen is only slightly more strongly bonded to Fe than to Ni—i.e., FeO in calcined concentrate is almost as easy to reduce as NiO.
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DOI: 10.1016/s1003-6326(20)65256-6 Corpus ID: 216163739; Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation @article{Shuai2020EfficientEO, title={Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation}, author={Yuan Shuai and …
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The sulfation roasting leaching process has been investigated as an alternative method for recovering nickel and cobalt from laterite ore. This process involves converting the nickel and cobalt in the ore into sulfates, which can then be dissolved through water leaching, while the iron remains as an insoluble oxide. However, the …
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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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The ionic radius of divalent nickel is close to that of divalent iron and magnesium, allowing the three elements to substitute for one another in the crystal lattices of some silicates and oxides. ... Ni-Co Laterite Deposits of the World-Database and Grade and Tonnage Models Open-File Report 2011-1058; Nickel - Makes Stainless Steel Strong Fact ...
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The leaching behavior of nickel and iron in limonite-type laterite nickel ore was studied through ammonium hydrogen sulfate atmospheric leaching. The leaching temperature, ammonium bisulfate concentration, reaction time, and acid excess rate during the nickel dissolution process were optimized using the response surface methodology …
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A kind of leaching residue generated during high pressure acid leaching of laterite nickel ore is creatively prepared as blast furnace charge for ironmaking. Results show that the briquettes with uniform shape, compressive strength higher than 72.3 N/pellet, and cracking temperature over 400 °C can be obtained by the non-binder briquetting with water …
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This work presents a practical method for the highly efficient recovery and utilization of iron and nickel from low-grade laterite nickel ore, contributing to the …
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1. Introduction. Over the past 30 years laterite ores have become increasingly more important as a source of nickel metal (Dalvi et al., 2004).Several methods of nickel extraction from laterite ores have been piloted and some were put into full operation, including acid leach with sulphuric, nitric and hydrochloric acids, ammonia …
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And finally, there are the ESG concerns. In a general sense, nickel laterite operations are more energy and CO2 intensive when compared to sulfide projects. In a 2009 study, Dr. Gavin Mudd determined that major laterite operations require 2.5 to 6 times more energy per tonne of nickel produced when compared to sulfides.
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2.1 Materials and Chemicals. The laterite ore used in the current study was obtained from North Konawe, Southeast Sulawesi, Indonesia. The atomic composition of as-received laterite ore by emission dispersive X-ray spectroscopy (EDS) analysis is tabulated in Table 1.It can be seen that the initial grade of nickel and iron was 1.59%wt …
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Most of the world's terrestrial nickel resources are hosted in nickel laterites, the products of intense weathering of ultramafic rocks at the surface of the earth in humid climatic …
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The two main processing methods for laterite ores are smelting and High-Pressure Acid Leaching (HPAL). Smelting is used primarily on saprolite ores to obtain an iron-nickel alloy (ferronickel – FeNi, Nickel Pig Iron – NPI) while HPAL is used primarily to process limonite or for higher-purity end products.
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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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with metal oxides (oxides of iron, nickel, and cobalt) to form metal chlorides. ... the International Laterite Nickel Symposium-2004, Charlotte, NC, USA, 14–18 March 2004; ...
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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% ...
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In nature, nickel (Ni) mainly exists in sulfide ore and oxide ore. Nickel oxide ore gets its name for it is a kind of laterite ore with high iron content. Nickel laterite, as the main land-based nickel resource, has total resource of 1.26 billion tons with an average nickel content of 1.28%, accounting for 72% of the total nickel resources.
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Nickel is an important strategic alloying metal with wide industrial applications.1 Nickel alloys are characterized by high strength and ductility as well as excellent corrosion and heat resistances. Approximately 70% of nickel reserves are nickeliferous laterite ores, from which only about 40% of the world nickel was …
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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. Fine nickel–iron particles are formed through the reduction of nickel and a small amount of iron oxides. These particles are dispersed and ...
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Laterite ores occur as surface deposits and are traditionally separated into two main types: limonites (lower nickel, high iron) and saprolites (higher nickel, low …
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Tectonic emplacement of variably serpentinized ultramafic host rock on land and subsequent chemical weathering under humid tropical to subtropical conditions results in the formation of nickel …
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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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Learn about the geology, mineralogy, and economics of nickel and cobalt laterite deposits, which provide about 40 percent of world nickel production. Explore a …
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Learn about the nickel laterite metallurgy technology, which uses nickel laterite as raw material to produce metallic nickel or other products. Compare different …
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The paper reviews the metallurgical treatment methods of nickeliferous laterites, especially the Greek ferronickel production process. It compares the advantages and …
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The main chemical composition of laterite ore was determined using an inductively coupled plasma optical emission spectrometer (ICP-OES, ICAP7400 Radial, ThermoFisher Scientific, USA), as listed in Table 1.The contents of nickel and iron were 1.48 wt% and 37.28 wt%, respectively.
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@article{Shen2024WasteTT, title={Waste to treasure: A sustainable technic to prepare high-performance lithium iron phosphate from laterite nickel tailings}, author={Zhi-Zhong Shen and Rui-Xiang Wang and Hong-Yan Yuan and Yong Guo and Dan Xiao and Yan Meng}, journal={Separation and Purification Technology}, year={2024}, …
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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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We successfully synthesized nickel slag/laterite soil (NS/LS) and nickel slag/iron sand (NS/IS) nanocomposites using a simple mechanical alloying technique, and the electromagnetic (EM) wave absorption capacities of the nanocomposites were measured using a vector network analyzer. The structural properties of the nanocomposites were …
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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 …
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Nikel laterit adalah batuan peridotit.Menurut Vinogradov batuan ultra basa rata-rata mempunyai kandungan nikel sebesar 0,2 %. Unsur nikel tersebut terdapat dalam kisi-kisi kristal mineral olivin dan piroksin, sebagai hasil substitusi terhadap atom Fe dan Mg.Proses terjadinya substitusi antara Ni, Fe dan Mg dapat diterangkan karena radius ion dan …
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Historically, Indonesia's nickel strategy focused on the supply chain of steel production and hence on the construction of smelters to produce Class 2 nickel (e.g., ferronickel/nickel pig iron). According to the Mineral and Coal Mining Law of 2009, mining companies are obliged to process mining minerals in Indonesia (Article 130) and from ...
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Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the mechanisms …
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