Nickel laterite ore accounts for about 70%, mostly in the form of oxidized ore deposits near the equator [1,[3][4][5][6]. However, due to the increasing depletion of nickel sulphide resources ...
In comparison to sulphide ores, where the nickel-containing mineral can be readily concentrated by flotation, nickel laterites are not amenable to significant upgrading, due to their complex ...
magnetic separation is regarded as a possible altern ative to low-grade ferro-nickel production. This This process was reported to …
DOI: 10.1016/S1003-6326(10)60017-9 Corpus ID: 97138138; Pretreatment study on chloridizing segregation and magnetic separation of low-grade nickel laterites @article{Liu2010PretreatmentSO, title={Pretreatment study on chloridizing segregation and magnetic separation of low-grade nickel laterites}, author={Wanrong Liu and Li Xinhai …
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 …
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 …
DOI: 10.1016/J.MINPRO.2012.01.003 Corpus ID: 97937238; Upgrading low nickel content laterite ores using selective reduction followed by magnetic separation @article{Zhu2012UpgradingLN, title={Upgrading low nickel content laterite ores using selective reduction followed by magnetic separation}, author={De‐qing Zhu and Yu Cui …
Reduction and Magnetic Separation Process The nickel laterite ore and palm shell charcoal were crushed and ground to less than 149 µm. The fine nickel laterite and 5 wt. % palm shell charcoal was thoroughly mixed with different additives, i.e. sodium carbonate, sodium chloride and sodium sulfate with 5 to 15 wt. %.
For example, in a nickel-cobalt laterite deposit in New South Wales, Australia, gravity separation followed by magnetic separation resulted in upgrading nickel from 0.9% to 1.1% at 57% recovery (Aral, 2013). Furthermore, Muir and Johnson (2006) demonstrated that in physical beneficiation using gravity, particle size is the key parameter.
Over 70 % of the global land-based nickel resources are nickel oxide ores. However, about 50 % of global nickel production comes from laterite nickel ores [8–10]. With the depletion of nickel sulfide ores, nickel extraction from laterite nickel ores has received widespread attention at home and abroad [11–14].
magnetic separation is regarded as a possible altern ative to low-grade ferro-nickel production. This This process was reported to be important, especially for low-grade laterites and the case ...
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 ...
Abstract. The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that …
Ni grade in laterite ores was increased using magnetic and gravity separation. •. Ni bearing serpentine were separated from heavier minerals with a …
The production of ferronickel concentrate from low-grade nickel laterite ore containing 1.31% nickel (Ni) was studied by the non-melting reduction magnetic …
A number of other methods for physically separating nickel laterites are absorber-float (or dense medium) separation, gravity separation, magnetic separation, electrostatic …
With the increasing demand and nickel consumption of the world, supported by the decline of nickel sulphide reserves, the nickel purification of laterite ore and the development of ...
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 …
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
For example, in a nickel-cobalt laterite deposit in New South Wales, Australia, gravity separation followed by magnetic separation resulted in upgrading nickel from 0.9% to 1.1% at 57% recovery ...
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 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 ...
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 ...
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 …
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 …
Of course, upgrading nickel using magnetic separation highly depends on the ore mineralogy and mineral liberation, and if nickel is associated with magnetic minerals. Table 3 also shows that the percentage of iron increases (by ~70%) in the magnetic product for ores S and I, but not for ore L. On the other hand, more silicon …
magnetic separation. The magnetic part was initially separated using a current of 2 A (~ 6000 gauss), then the middling and tail were mixed and were further processed at 10 A …
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 ...