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limonitic nickel ore
Selective Reduction of Laterite Nickel Ore J-STAGE
two types of ore, i.e. limonitic and saprolitic nickel laterite ore. Limonitic nickel ore has low content of Ni. The nickel content of limonitic nickel ore is 1.1 until 1.8wt%. On the other Basicity of limonitic nickel ore, modified by adding CaO, MgO, SiO 2, and Al 2 O 3, had affected the selective reduction process. The optimum condition was Effect of modified basicity in selective reduction process of limonitic
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(PDF) Thermal upgrading of nickel from limonite
In this work, the effect of binary, ternary, and quaternary basicity limonitic nickel ore had been investigated clearly to reveal the appropriate basicity in the selective reduction process.Limonitic nickel laterite, characterized by its relatively high iron grade and low nickel content, is very difficult to upgrade. The current work explores improving the Utilization of limonitic nickel laterite to produce ferronickel
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Reduction roasting and bioleaching of a limonite ore
The experimental set-up comprised the reduction of a nickel limonitic ore with hydrogen gas in a rotary kiln, at 900 °C, until all the goethite was converted to In this work, the effect of binary, ternary, and quaternary basicity limonitic nickel ore had been investigated clearly to reveal the appropriate basicity in the selective Study of selective reduction in lateritic nickel ore: Saprolite
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Minerals Free Full-Text Effective Utilization of Limonitic Nickel
Limonitic laterite contains low iron and nickel grades and much high smelting minerals and loss on ignition (LOI), identified as refractory iron ore for sintering. 1 Altmetric Metrics Abstract In this paper, low-grade limonitic nickel laterite and chromite were synergistically utilized via the hybrid sintering process (i.e., pellet Reduction of Carbon Footprint Through Hybrid Sintering of
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Kinetic Studies of the Reduction of Limonitic Nickel Ore by
A sample of limonitic nickel ore was characterized by XRD, SEM-EDS, and ICP-OES techniques. The Rietveld refinement method showed that the main mineral constituent of this sample is goethite (55.8 pct). Thermal analysis experiments were performed and the determination of the goethite content in the sample could be In this work, the effect of binary, ternary, and quaternary basicity limonitic nickel ore had been investigated clearly to reveal the appropriate basicity in the selective reduction process. The basicity was modified with the addition of CaO, MgO, SiO 2, and Al 2 O 3 in nickel laterite. The reduction process was conducted in a muffle furnace atStudy of selective reduction in lateritic nickel ore: Saprolite
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Extraction of Nickel, Cobalt, and Scandium from Low-Grade
Limonitic nickel laterite ore samples used in the study were collected from LNL Archipelago Inc. (LAI), in Sta Cruz, Zambales, Philippines. The samples were air-dried for seven (7) days to remove excess hydration, and were then crushed, ground, and screened to obtain an 80% passing size of 149 microns (100 mesh). 2.2 Experimental Laterite ore is a well-known raw material, where Ni and Fe exist as oxides. It can be diversified into limonite, saprolite, and garnierite, particularly with respect to the depth from the earth's surface, the characteristics, and average chemical composition, as exhibited in Table 1 (N.W. Brand et al., 1998).Limonitic laterite exists near to earth surface with low Production of ferronickel from limonitic laterite ore using
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Mineral evolution and porous kinetics of nitric acid pressure
It is an oxidized nickel ore formed by nickel peridotite in tropical or subtropical regions through large-scale, long-term weathering, leaching, alteration, and metamorphism (Putzolu et al., 2020, Tupaz et al., 2020, Ugwu et al., 2019). Laterite nickel ore can be divided into two types: saprolitic laterite and limonitic laterite.However, due to a greater demand for nickel (and cobalt) in the last few decades, the development of new processing technologies as well as the rapid depletion of sulfide ore deposits, nickel production from laterite ores increased to 46% by 2008, exceeded 50% of global production in 2010 and it is expected to reach 72% by 2022 Reductive Mineral Bioprocessing SpringerLink
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Mineralogical Characterization of Limonitic Laterite from
Abstract The mineralogical characterization and occurrence of target elements in limonitic laterite from Africa was comprehensively studied by X-ray diffraction (XRD), scanning electron microscopy energy spectrum (SEM–EDS), and optical microscope (OM) measurements. The results suggest that laterite ore has a complex internal We have harnessed the ability of the facultatively anaerobic, acidophilic bacterium Acidithiobacillus ferroooxidans to couple the oxidation of elemental sulphur to the reduction of ferric iron in the goethite fraction of a limonitic nickel ore at 30 °C. Nickel and other metals (Co, Cr and Mn) were effectively solubilised and maintained inMinerals Free Full-Text A New Direction for Biomining
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Effect of modified basicity in selective reduction process of limonitic
The appropriate basicity type in selective reduction of limonitic ore was 0.3 of ternary basicity (BT1) and 0.2 of quaternary basicity (BQ1), which had a similar nickel grade and recovery, i.e., 6The water contained in limonitic nickel ore is classified into free water, crystalline water and hydroxyl group. According to the types, while heating, there are several phenomena happening. At temperature of 25–140°C, the first phenomenon is the removal of free water. Then, at a temperature of 200–480°C, the second phenomenon is theSelective Reduction of Laterite Nickel Ore J-STAGE
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Selective Reduction of Laterite Nickel Ore J-STAGE
14) Conversely, limonitic nickel laterite ore was processed through hydrometallurgical route. The examples of hydrometallurgical route for limonitic nickel laterite ore processing is High Pressure Acid Leaching (HPAL).1517) A number of hydrometallurgy processes have been applied in industrial scale, but this application cannot meet the need ofThe experimental set-up comprised the reduction of a nickel limonitic ore with hydrogen gas in a rotary kiln, at 900 °C, until all the goethite was converted to metallic iron. Subsequently, the reduced sample was bioleached by mesophilic microorganisms grown on Fe2+ ( Acidithiobacillus ferrooxidans) at 5% solids, 32 °C, and pH < 3.Reduction roasting and bioleaching of a limonite ore
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Minerals Free Full-Text Effective Utilization of Limonitic Nickel
Limonitic laterite contains low iron and nickel grades and much high smelting minerals and loss on ignition (LOI), identified as refractory iron ore for sintering. Thus, sinter pot tests of limonitic laterite via pressurized densification sintering and its intensification mechanism were conducted, and the industrial application prospect was A limonitic laterite ore (TFe 50.88 wt% and NiO 0.38 wt%) was reduced at 700 ℃ in the gas of 30 vol.% CO/ (CO + CO 2) for 90 min. The leaching percentage of nickel in the reduction product was 93% after leaching using 0.05 mol/L H 2 SO 4 at temperature of 70 ℃ for 60 min [ 65 ].An Overview of Nickel Utilization from Laterite Ore
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An investigation into the co-sintering process of limonitic nickel
It should be noted that the imported nickel laterite ore is mainly characterized as iron-rich and low nickel ore (i.e., limonitic nickel laterite), due to its plentiful reserves accounting for 60% of the total lateritic nickel ore resources and the export limitation of high-grade nickel laterite ore [10, 11]. Therefore, it is imperative toIn this work, the effect of binary, ternary, and quaternary basicity limonitic nickel ore had been investigated clearly to reveal the appropriate basicity in the selective reduction process. The basicity was modified with the addition of CaO, MgO, SiO 2, and Al 2 O 3 in nickel laterite. The reduction process was conducted in a muffle furnace atThermodynamic of selective reduction of laterite ore by
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Study of selective reduction in lateritic nickel ore: Saprolite
DOI: 10.1016/J.MATPR.2020.11.687 Corpus ID: 234120589; Study of selective reduction in lateritic nickel ore: Saprolite versus limonite @article{Nurjaman2021StudyOS, title={Study of selective reduction in lateritic nickel ore: Saprolite versus limonite}, author={Fajar Nurjaman and Widi Astuti and Fathan Bahfie In this work, the effect of binary, ternary, and quaternary basicity limonitic nickel ore had been investigated clearly to reveal the appropriate basicity in the selective reduction process. The basicity was modified with the addition of CaO, MgO, SiO 2, and Al 2 O 3 in nickel laterite. The reduction process was conducted in a muffle furnace atFerronickel particle formation during the carbothermic
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Nickel leaching from laterite ores by combination of organic
The leaching kinetics study shows that nickel extraction from limonite ore by a mixture of 2 M sulfuric acid and 0.5 M citric acids is controlled by diffusion through solid product layer, while the nickel extraction from saprolite ore by a mixture of 0.5 M sulfuric acid and 2 M citric acid is controlled by interface reaction with activationLimonitic laterite contains low iron and nickel grades and much high smelting minerals and loss on ignition (LOI), identified as refractory iron ore for sintering. Thus, sinter pot tests of limonitic laterite via pressurized densification sintering and its intensification mechanism were conducted, and the industrial application prospect was [PDF] Effective Utilization of Limonitic Nickel Laterite via
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