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 …
Nickel is a kind of silvery white ferromagnetic metal firstly separated by Swedish mineralogist A.F. Cronstedt in 1751. It is in the eighth group of the fourth period in the periodic table of elements, with atomic number of 28, atomic weight of 58.71, density of 8.9 g/cm 3 (20 ℃), melting point of 1455 ℃, and boiling point of 2915 ℃. The most …
The reduction rate of lateritic nickel ore improves with the increase of temperature reduction, both for limonite and saprolite. The nickel grade in saprolite's …
According to other work [12,13], on the limonitic laterite ore, nickel is rich in goethite accompanied by intergrowth of silicate minerals. This is also evident in SEM …
In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% ...
Extraction of Nickel and Cobalt from Sulawesi Limonite Ore in Nitric Acid Solution at Atmospheric Pressure. ... Characterization and leaching study of a limonitic laterite ore from Sulawesi has been undertaken in order to find out mineralogical nature and Ni and Co concentration along with dissolution behavior during leaching process in nitric ...
The paper focuses on leaching of complex copper–cobalt–nickel ore from Mwinilunga district in Zambia, containing 0.6% Cu, 0.21% Co, 2.6% Fe, and 0.13% Ni. Mineralogical examination of the ore using scanning electron microscope (SEM) showed that copper, cobalt, and nickel exist in fine particles of heterogenite and limonite …
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 …
Such ore deposits occur in three layers: limonite, smectite, and saprolite. Limonite and smectite ores have high Fe content, 40% total Fe or greater. Saprolites, on the other hand, have high magnesium (Mg) and low Fe contents, 10–20% Mg and 10–25% Fe. ... Limonitic nickel laterite ore samples used in the study were collected from LNL ...
Ore Minerals A sample of Garnierite, a mixture of nickel bearing minerals. CC. ... iron and aluminum also known as smectites which can contain trace amounts of nickel. The nickel in the limonite zone is …
nickel ore having nickel less than 1.7% to recommenc e [20]. Together with the start of low-grade ferro- ... process of Indonesian limonite ore in electric arc furnace. In Proceedings of the 2nd ...
Transforming Waste into Revenue: QPM's Limonite Ore Processing Capabilities Nickel laterite ores have two distinct sections of the ore body: the limonite zone (top layer) which is iron rich and the saprolite zone (bottom layer) which is magnesium rich. The majority of the world's nickel ore trade is for saprolite…
TABLE 1. AAS analysis for limonite nickel ore Component % (mass) Fe 27.02 Ni 1.29 Effect of Reduction Temperature Selective reduction processes were conducted at temperature between 800º – 1100 ...
The low temperature suggested that the goethite in the ore was fine-grained and poorly crystalline, as suggested by Swamy et al. (2003). 3. ... The ore is divided into three main types for blending purposes designated limonite ore, serpentine ore and rocky ore. ... Clay mineralogy of the nickel laterite ore developed from serpentised ...
Therefore, in this work, the selective reduction of saprolite and limonite was carried out to reveal the effect of lateritic nickel ore basicity (MgO/SiO2 ratio) on phase transformation and ...
The limonite ore sample under study had a particle size smaller than 75 μm and was oven dried for 24 h at 105 °C prior to tests. The limonite ore used was supplied by the company Nexa located in the city of Niquelândia in the state of Goias (Brazil). Reduction step. Table 1 shows the chemical analysis of the limonite ore.
The ferronickel obtained from the selective reduction smelting process is a fine material for the subsequent stainless steel smelting due to its high Ni grade and low content of impurities. ... respectively, which is a typical limonite-type laterite nickel ore. In addition, the Co and Cr elements contained in the laterite nickel ore are 0.13% ...
Here, the iron content of the garnierite ore was increased through blending with limonite ore and, it was demonstrated that the nickel recovery from magnetic separation of the nickeliron alloy ...
Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was ...
The processing of lateritic nickel ore is quite difficult, since the nickel-bearing minerals are finely disseminated in the ore bodies. ... The results indicate a trivial Ni content in magnetite, chromite and unaltered quartz, while serpentine, opal and limonite are rich in Ni content. Hand-picking, sink-and-float separation, magnetic ...
The research was carried out at first by grinding the saprolite and limonite ore from Sulawesi Island into powder form. After that, sieving with a size of > 100 mesh, to get a uniform powder size. ... Fine Ore 600;700 800;900;1000:1100. 0. C + Coal 10%. ... Figure 2 is DTA/TG data from laterite nickel ore. The picture shows the endothermic ...
In this article the results of these tests are given and the behaviour of the mineral species during processing is examined. EXPERIMENTAL PROCEDURES AND RESULTS Samples and observations Samples. Lateritic nickel ore samples from the Toyama Smelter of the Showa Electric Works Co. Ltd., were lump and fine ore from the …
In the current work, nickel was upgraded in ore I (sample from the intermediate zone between saprolite and limonite) from 1.1% to 1.5% at 70% recovery. It should be noted that ore I has the highest amount of quartz among the tested samples (Table 1). This should have helped upgrading nickel in this ore using gravity separation.
The ores were representative of different laterite zones of a particular mine with different feed grades. The ore samples are labelled as "ore L" (a limonite ore), "ore …
of laterite nickel ore in Section 2.2, the main mineral phases of laterite nickel ore are limonite, serpentine, chlorite, quartz, chromite and magnetite. In order to further study the beneficiability of laterite nickel ore, it is necessary to analyze the mineralogical characteristics of its main minerals by modern analytical means such as
DOI: 10.1016/J.MINENG.2013.05.023 Corpus ID: 95334664; The effect of sodium sulphate on the hydrogen reduction process of nickel laterite ore @article{Lu2013TheEO, title={The effect of sodium sulphate on the hydrogen reduction process of nickel laterite ore}, author={Jie-feng Lu and Shoujun Liu and Shangguan Ju and Wenguang Du and Feng …
Lu et al. studied the effect of sodium sulfate addition on the hydrogen reduction of nickel laterite ore. A low-grade Indonesian nickel laterite ore containing 1.38% Ni, 25.3% Fe, 15.0% MgO, and 19.1% SiO 2 was used in the experiments. Reagent-grade sodium sulfate was used as an additive, and H 2 reduction was conducted. In each run, …
Nickel and cobalt, as strategic metals, are indispensable parts in the development of the steel industry, and new energy industry [1,2,3].Laterite ore is the principal source of nickel, accounting for 70% of global nickel land-based reserves and around 30% of overall cobalt reserves [4, 5].With the increasing demand for nickel and …