An investigation on the reduction roasting and ammonia leach methods of treating lateritic nickel ore (Caron process showed satisfactory extractions for limonitic ore, i.e., material high in iron oxides and low in silicates) is reported . The Caron leaching method works with oxide laterites ("limonite") that can tolerate some silicate ...
The following advantages and disadvantages should be considered when this process is compared with HPAL and AL processes. The process should enable the recovery of nickel and cobalt from low-grade limonitic laterite ore with lower costs for equipment and operation compared to HPAL, lower acid consumption and lower dissolution of iron compared ...
In the present study, the kinetics analysis of limonitic nickel ore in sulfuric acid by incorporating the effect of particle size distribution in SCM was made. The approach was used to evaluate the effects of leaching temperature (65 to 95°C) and agitation speed (250 to 400 rpm) on the leaching kinetics of nickel from limonite ore.
The limonitic laterite ore used in this study was from the Philippines, as provided by Jiangsu Huahai Material Science and Technology Company Ltd. (China). ... Leaching behavior of metals from a limonitic nickel laterite using a sulfation–roasting–leaching process. Hydrometallurgy, 99 (3–4) (2009), pp. 144-150. View PDF View article View ...
Lateritic ore contributes to 70% of total nickel resources. However, due to its low grades, and comparatively higher impurity constituents, it requires specific preprocessing steps prior to utilization. ... (HPAL) is the primary method for extraction of nickel from limonitic laterite. The severe operating conditions, the complexity of ...
Saprolite and limonite have different behaviour in the carbothermic reduction process due to the differences in their atomic structures. This work investigates the kinetic study of these two …
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 …
Nickel is one of the strategic metal that was used to produce stainless steel (65%), superalloys, and non-ferrous alloys (12%), electroplating (8%), rechargeable battery and others chemical product (5%) [1].Nickel was generated from sulfidic ore (association with copper) and lateritic ore (association with iron and magnesium silicate) [2].The lateritic nickel ore …
study, reduction pre-treatment is conducted prior to the atmospheric leaching of limonitic laterite ore to produce a nickel-cobalt-scandium-rich leach solution and iron-rich mag-netic residues. The leaching of pre-treated ore resulted in higher recovery of Ni, Co, and Sc when compared to the yield from the leaching of untreated ore.
However, the low-intensity forsterite in this residue nickel ore has become advantageous for producing a high recovery of metallic nickel. The ferronickel intensity was observed at 1150 °C. ... A.S., Bahfie, F., Astuti, W., Suharno, B.: Effect of modified basicity in selective reduction process of limonitic nickel ore. J. Market. Res. 15, 6476 ...
A limonitic laterite ore was leached to extract nickel and iron in the presence of sodium sulfite and the extraction mechanism was investigated. Based on the leaching results, the extraction correlation between nickel and iron an appropriate scope for …
Abstract Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. The sulfation-roasting …
One main source of nickel besides nickel sulfide ore is laterite nickel ore. Laterite ore is more sustainable and has abundant reserves. Nowadays, nickel demands are increasingly needed either for the manufacture of stainless steel or nickel-based batteries. This study aims to study the smelting process of limonitic laterite nickel ore. The smelting process …
Nickeliferous limonitic laterite ores are becoming increasingly attractive as a source of metallic nickel as the costs associated with recovering nickel from the sulphide ores increase. Unlike the sulphide ores, however, the laterite ores are not amenable to concentration by conventional mineral processing techniques such as froth flotation. One potential concentrating method …
Effect of modified basicity in selective reduction process of limonitic nickel ore. F Nurjaman, AS Handoko, F Bahfie, W Astuti, B Suharno. Journal of Materials Research and Technology 15, 6476-6490, 2021. 15: 2021: Effect of basicity on beneficiated chromite sand smelting process using submerged arc furnace.
Limonitic layers of the regolith, which are often stockpiled as waste materials at laterite mines, commonly contain significant concentrations of valuable base metals, such as nickel, cobalt, and manganese. ... Chromium (VI) Inhibition of Low pH Bioleaching of Limonitic Nickel-Cobalt Ore.
The presence of carbon in the selective sulphidation of limonitic nickel ores using sulphur was analyzed by thermodynamics and phase transformation. Limonite nickel ores were mixed with 5% sulfur and 4% lignite coal and were formed with pelletizer, roasted at 1000°C for 1 hour (heating rate 10°C/min). Cooled in the furnace by flowed N 2 gas ...
In this study, limonitic nickel ore extracted using sulfuric acid leaching method with pre-roasting. The effect of pre-roasting with various concentrations of sulfuric acid was further investigated to obtain maximum nickel recovery. 3rd International Postgraduate Conference on Materials, Minerals & Polymer (MAMIP) 2019 AIP Conf. Proc. 2267 ...
Nina Safitri, M. Zaki Mubarok, Ronny Winarko, Zela Tanlega; Recovery of nickel and cobalt as MHP from limonitic ore leaching solution: Kinetics analysis and precipitate characterization. AIP Conf. Proc. 15 May 2018; 1964 (1): 020030.
The proportion of two types of nickel ore production in China is shown in Fig. 1(d). Nickel laterite ore has a low nickel grade but abundant reserves. ... is more suitable for pyrometallurgical processes. In contrast, limonitic nickel laterite ore, characterized by low magnesium and silicon content and high cobalt content, is better suited for ...
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 … Expand
Laterite ore has become the main source of nickel production due to the fast consumption of nickeliferous sulfide ore. Pyrometallurgical processing is known to be a widely applied technology for the treatment of laterites (with a portion about 70%) to produce ferronickel (Maragkos et al., 2009, Warner et al., 2007).In general, for producing nickel-rich alloy, …
Leaching of limonitic nickel from Sorowako with sulfuric acid at atmospheric pressure. N Safitri 1, M Z Mubarok 2, I U Meidji 1, J Hardi 3 and H Jayadi 1. ... The results showed that the nickel ore sample from Sorowako had a water content of 5.51% with a dominant size fraction of -4 +14 mesh.
1. Introduction. Nickel is a hard, ductile and ferromagnetic metal that is utilized in a variety of applications including stainless steel, alloy steel, batteries, and electroplating (Ilyas et al., 2020, Lei et al., 2020, Ma et al., 2020).As economically available nickel sulfide resources become increasingly depleted, laterite, which is low grade and technically difficult to treat, is …
This paper describes the experimental findings of the extraction of nickel and cobalt by high pressure acid leaching (HPAL) of a refractory limonitic nickel laterite ore from the …
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 ...
In recent years, the major nickel source of stainless steel has been converted from nickel sulfide ore into nickel laterite ore due to the massive consumption of the former [1, 2].In addition, limonitic nickel laterite accounts for about 60% of the total nickel laterite resources [].The abundant nickel laterite ore is generally used for ferronickel preparation …
Laterite nickel ore is a promising scandium resource with economically interesting concentrations and large amounts [1,2,3,4,5,6].It can be simply divided into two types, limonitic and saprolitic laterite [7, 8].Typical chemical composition and metallurgical process of two different types of laterite nickel ore is shown in Table 1 [1,2,3,4,5,6, 9, 10].
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 (RSM) …
The characterization of nickel ore from Sorowako has been studied that included water content analysis, sieve analysis, XRF analysis, XRD analysis, and leaching in sulphuric …
Nickel laterite ore is classified into two principal ore types: saprolite (silicate ore) and limonite (oxide ore). Saprolite-type ore characterized by high magnesia and silica contents is treated by pyrometallurgy process. On the other hand, limonite-type ore is subjected to hydrometallurgy process to produce nickel products. Hydrometallurgy process requires that a …
The increasing demand for stainless steel and the scarcity of sulfide nickel ore affect the increase of laterite nickel ore processing. One of the processes that has been proven can be applied to process laterite nickel ore is direct reduction. In the direct reduction, the reduction atmosphere was adjusted by controlling the volume of CO and CO2 from carbon source materials, such as …
