A characteristic feature of serpentine oxidized nickel ores (ONO) of the Serov deposit (≈ 1 wt.% Ni) is the increased content of iron and magnesium. The main nickel-containing phases are lizardite, antigorite, clinochlore and iron oxides with the nickel content varying from 1.6 to 9.2 wt.%.Heap (percolation) leaching with aqueous H2SO4 solutions was used for …
Earlier studies indicated that nickel extraction from lateritic ores was strongly dependent on types of nickel bearing mineral present, leaching temperature and sulfuric acid concentration (Canterford, 1978, Panagiotopoulos and Kontopoulos, 1988).Studies on leaching kinetics of laterites (Rubisov et al., 2000) showed that during leaching, magnesium dissolution …
Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic sea nodules, and various ...
Nickel extraction technology from nickel sulfide ore based on "sulfated roasting–water leaching" can achieve high efficiency and clean extraction of nickel, but how to improve the utilization efficiency of sulfur in sulfated roasting is a bottleneck problem that needs to be solved urgently. (4)
Nickel is extracted from ores using froth flotation for sulfides, yielding 15-20% nickel matte, and high-pressure acid leaching for laterites.
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 leach and the pyrometallurgical process (Superiadi, 2007).
Nickel laterites ore is commonly found and mined in tropical countries like Indonesia, the Philippines, and Cuba. These ore deposits account for 73% of the world's nickel resources and 40% of nickel production. Such ore deposits occur in three layers: limo-nite, smectite, and saprolite. Limonite and smectite ores have high Fe content, 40%
The ore, extracted from the New Caledonian ultramafic soil, is a result of the decomposition of a primal magnesian olivine (Mg, Fe)SiO 4 in the parent rock into clays and phyllosilicates under the ...
Efficacy of reduction pre-treatment of laterite ore on the extraction of Ni, Co, and Sc was determined by comparing the %recovery obtained between leaching untreated ore and reduced ore (treated at 700 °C for 40 minutes) at 20 wt% solids, 85–90 °C, 360 minutes, and experimental acid consumption of 386.4 kg H 2 SO 4 per ton of ore, as shown ...
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 acid. Extraction rates of Ni and Co in different acid concentration and reaction time were also assessed.
According to the sulfation roasting leaching process employed for three kinds of laterite ores, the highest extraction of nickel and cobalt was achieved to be 86.3 and 85.7 pct, respectively, from NC1 ore containing the lowest silica and magnesium content. However, the lowest recovery of nickel and cobalt from serpentine-rich laterite ore (NCP ...
Extraction of Nickel . Main ore is Pentlandite; Nickel is extracted from ores through the Mond procedure, in which nickel oxides are purified throughout several steps into pure nickel metal. It is placed with hydrogen and carbon …
The significance of various parameters and their selectivity for nickel extraction . × ... 56 Ž2000. 387–394 Technical note Design of experiments to study the extraction of nickel from lateritic ore by sulphatization using sulphuric acid B.B. Kar, Y.V. Swamy ), B.V.R. Murthy Regional Research Laboratory ...
Abstract In this study, magnesia–nickel silicate ore was investigated, which contained 0.83% Ni and antigorite, chlorite, magnetite (Fe3O4), quartz, and mica as the main minerals. Chloride roasting and magnetic separation were used to treat the ore. The addition of red mud enhanced the transformation of nickel silicate to a strongly magnetic mineral mainly …
Qiao et al.(2025) extracted iron from nickel laterite ore acid leaching residue using phosphoric acid and iron powder, achieving a 96.5 % iron recovery rate and producing high-purity FePO 4 (99.4 %). This method offers a new approach for the resourceful utilization of nickel laterite ore acid leaching residue. 3. Pyrometallurgy
Hydrometallurgical processes involve the use of aqueous solutions and chemical reactions to extract nickel from the ore. The two primary hydrometallurgical methods used for nickel extraction are: 1) High-Pressure Acid Leaching (HPAL): HPAL is a widely used method for extracting nickel from laterite ores, which are low-grade and high in impurities.
A new extraction technology of chlorination roasting with a mixture of MgCl 2 ·6H 2 O and NaCl was investigated to co-extract nickel and copper from low-grade nickel ores. The effects of some key factors on the extraction of nickel, copper, and iron were studied, and the results show that,when the roasting temperature is 850°C, the roasting time is 1.5 h, the mass …
Extraction and purification; Nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In many stainless steel applications, …
the extraction of nickel from serpentine-rich ores, despite the presence of significant nickel reserves in such ores. Understanding the sulfation–roasting–leaching mech-anism and the influence of serpentine minerals on the recovery of nickel and cobalt is crucial in optimizing the extraction process for serpentine-rich ores. The presence
Laterite nickel ore with a high MgO and SiO 2 impurity content caused by the removal of a considerable amount of iron through weathering was ... Reduction roasting–magnetic separation technology has been extensively applied to the extraction of nickel from laterite nickel ores with low nickel content due to its short process flow, low ...
A sample of nickel laterite ore yielded 73% Ni extraction, 55% Co extraction, 73% mineral carbonation and 6.0% Fe extraction and 0.5% Mg extraction, respectively. Download conference paper PDF. Similar content being viewed by others.
Nickel's extractive metallurgy is the most complex since there are two major types of ores, laterites, and sulfides, which make this paper a valuable guide by providing an overview of the …
The extraction of molybdenum and nickel from Ni-Mo ore was attempted using oxidation complexation acid leaching. The effects of leaching temperature, leaching time, concentration of sodium chlorate and hydrochloric acid as well as sodium dihydrogen phosphate on the leaching of nickel and molybdenum were investigated.
Nickel (Ni) and cobalt (Co) are amongst the critically rare metals due to their large industrial usage and vital application in rechargeable batteries [1], [2], [3].The laterite ores are accounted for 70% of Ni reserves worldwide but 60% of the global Ni production is still contributed by the sulfide ores [4], [5].Due to the depletion of Ni-containing sulfide ores, increasing …
With nickel found in two radically different types of ore, it is not surprising that the mining methods differ. Sulfide deposits are usually mined by underground techniques in a manner similar to copper, although some deposits have been …
Nickel extraction from ore follows a similar path to copper extraction, and in some circumstances, similar procedures and equipment are employed. The use of higher-temperature refractories and the greater cooling …
The sulfation roasting leaching method has been developed for the recovery of nickel from laterite ore because it offers greater flexibility, and requires less energy compared to acid leaching and smelting processes. However, the previous studies found that the mineral carriers from saprolite ore affected the recovery of nickel and cobalt. To address this issue, …
5. 2.EXTRACTION OF NICKEL • The extraction of nickel and ferronickel from laterite and sulfide ores • Laterite ores occur as saprolite, smectite and limonite layers because of their different compositions and …
Nickel can be extracted directly from its ore by reduction by hydrogen or carbon monoxide at elevated temperature at $600 mat{^circ C}$ to $650 mat{^circ C}$: $$ce{NiO + H2 -> Ni + H2O}$$ $$ce{NiO + CO -> Ni + CO2}$$ Also, it can be extracted by treatment with dilute sulfuric acid following by precipitation: