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The reduction of nickel laterite was carried out at 1050-1150 °C to prevent the formation of semi-fused nickel ore, which causes the kiln-ringing problem in the rotary kiln furnace [12].
An iron-nickel concentrate was obtained after magnetic separation with a nickel grade of 7.0 % and a nickel recovery of 94.06 %, as well as an iron grade of 34.7 % and an iron recovery of 80.4 % [102]. The effect of the basicity of the limonitic ores on the selective reduction process was studied by Nurjaman et al. [85], [98]. Bituminous coal ...
Download Citation | The Past and the Future of Nickel Laterites | Production of nickel from laterite ores has occurred for over 100 years beginning with processing of garnieritic ores from New ...
Nickel is sourced from sulphide and laterite ores. While 70% of the nickel resources are contained in laterites, these ores are often complex and expensive to treat using conventional methods.
Although nickel Laterites make up 70% of the world's nickel reserves, few of them become producing mines. Over the last 60 years magmatic sulfide nickel deposits produced 60% of the world's nickel. In the last 10 years, the production of nickel from magmatic sulfide deposits has slowly decreased and begun to plateau.
The reduced ore was then upgraded by magnetic separation, 75 per cent of the total mass being rejected as tailings, and a high grade nickel concentrate, assaying 5.1 per cent Ni and 82.66 per cent ...
Followed by Magnetic Separation Xueming Lv, Lunwei Wang, Zhixiong You, Jie Dang, Xuewei Lv, ... The nickel laterite ore was dried at 120 °C for 2 h in an oven and ground to ... laterites. Ore Geol Rev 38(1):9–26 4. Rao MJ, Li GH, Jiang T, Luo J, Zhang YB, Fan XH (2013) Carbothermic reduction of ...
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 …
The results show reduction roasting followed by magnetic separation is effective for upgrading nickel ores, but challenges with this technology are the potentially high reagent usage and ...
Typical low grade nickel laterites are around 1% nickel and 0.05% cobalt and show a bias of nickel distribution toward the finer and mid-sized particles respectively with coarse particles generally
Selective reduction and magnetic separation of laterite ore. According to previous research, nickeliferous concentrates with nickel content of 5.1% and a nickel recovery of 98.8% could be produced from LN laterite ore by selective reduction and magnetic separation process when the reduction was conducted at 1250 °C for 60 min (Li et al., 2010 ...
Effect of reduction temperature and sodium-based additives on nickel upgrading process of laterites ores. A. Shofi, A. Rahmahwati, F. Nurjaman, B. Suharno. ... selective reduction process for nickel laterite was carried out from 950°C to 1150°C for 60 minutes followed by wet magnetic separation using 500 Gausses permanent magnet. The ...
The magnetic separation efficiency of nickel from the laterite ore was evaluated using the recovery ratio of nickel R ni using the formula: (1) R Ni = m Ni × β Ni M Ni × γ Ni × 100 % where m Ni is the mass of the magnetic product, g; β Ni is the nickel content in the magnetic product, wt.%; M Ni is the mass of the reduction product, g ...
High-pressure acid leach (HPAL) residue from laterite nickel ore is a potentially valuable resource for ironmaking; however, its efficient utilization is hindered by its high sulfur content. In this study, an effective and straightforward method is proposed for sulfur removal from HPAL residue. The process involves sieving and sodium carbonate leaching, enabling …
Due to the high cost of stainless steel production as a result of the high nickel prices (Baddoo, 2008), processes for producing low cost ferronickel raw materials are of importance. ... reduction roasting of nickeliferous laterite ore followed by magnetic separation to produce Fe–Ni alloy have been performed (Huang et al., 2011, Li et al ...
Under the action of waste cathode carbon and CaO, ferronickel concentrate was prepared by reduction roasting–magnetic separation for laterite nickel ore. ... Effect of reduction temperature and sodium-based additives on nickel upgrading process of laterites ores. IOP Conference Series: Mater. Sci. Eng., 541 (1) (2019), p. 012002.
The main finding of this work was that magnetic separation is effective in recovering 48% of nickel from laterite, increasing the Ni grade in the recovered product from 1.5% to 2.9%, when prior to ...
The treatment of laterites has been a research hotspot in extractive metallurgy over the past decades. Industrially, the pyrometallurgical treatment of laterites is mostly accomplished with a well-established method, namely, the rotary kiln–electric arc furnace (RKEF) process, which includes three main operations—calcination, prereduction, and smelting—followed by …
Nickel is sourced from sulphide and laterite ores. While 70% of the nickel resources are contained in laterites, these ores are often complex and expensive to treat using conventional methods. Therefore, upgrading the nickel content in laterite ores ahead of any recovery processes is economically desirable.
The present article reviews the insight into the available hydrometallurgical approaches for treating laterite ores and the separation of nickel and cobalt from hydrometallurgy routes. ... 2.1.1 Global distribution of Nickel Ore. Nickel laterites are found in Indonesia, Philippines, New Caledonia, and Murrin Murrin in Western Australia ...
Despite the growth in nickel laterite processing, upgrading these ores remains a challenge. This is mainly because of their complex and variable mineralogy and the lack of definite nickel-bearing ...
Pre-concentration of nickel in laterite ores using physical separation methods Saeed Farrokhpay1*, Lev Filippov1, Daniel Fornasiero1,2 1 Université de Lorraine, GeoRessources, CNRS, UMR 7359, F-54505 Vandoeuvre- lès-Nancy, France 2 Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia (*Corresponding author: …
The presence of a considerable amount of scandium in lateritic nickel-cobalt ores necessitates the investigation of possible processing alternatives to recover scandium as a byproduct during ...
Kazakhstan has significant mineral resources, which contain about 1.5 million tons of nickel (1.4–2% of global reserves) and 100 thousand tons of cobalt, which is 1.4% of global reserves. …
Effect of reduction temperature and sodium-based additives on nickel upgrading process of laterites ores. ... selective reduction process for nickel laterite was carried out from 950ºC to 1150ºC for 60 minutes followed by wet magnetic separation using 500 Gausses permanent magnet. The characterization of reduced ore was performed by X-Ray ...
Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700–1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator …
The chemical composition of the laterite analyzed by XRF is given in Table 1.The results of the analysis showed that the ore contained about 3.90 mass% NiO, 22.7 mass% MgO, 37.6 mass% SiO 2 and 31.9 mass% Fe 2 O 3. Fig. 3 shows the X-ray diffraction pattern of laterite. X-ray diffraction analysis indicated that quartz [SiO 2], lizardite [Mg 3 Si 2 O 5 (OH) 4], …
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 the 1677.7 kt came from pyrometallurgical and 12.3% from hydrometallurgical processes. For a long time, Fe-Ni had a 20–40% Ni analysis, but in 2006 a new Fe-Ni quality came into the scene.
An assumption was made on the segregation mechanism of nickel from garnierite ore in the previous paper. In this work, the assumption was confirmed by experimental data by using same process for extraction of nickel by XMA, electron beam scanning microscope and chemical analysis of the concentrates obtained. Fine ferronickel powder having very high nickel content …
roasting and magnetic separation, magnetic separation was tested on the three Ni laterite samples using both a low intensity (0.10 ± 0.02 T) dry magnetic separator and a Wet High Intensity
