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% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash …
The conventional nickel smelting and refining is the dominant strategy for nickel production from the sulfide nickel ores. The main disadvantages are the significant amount of SO 2 emissions during smelting and complex refining processes. In this paper, the authors investigated a solid-state nickel extraction method that recovered nickel …
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% ...
Currently, approximately 60% nickel is extracted from nickel sulfide ore, but in recent years, ... Japan with Cu Kα radiation) in Fig. 1 show that the main mineral phases in the matte are pentlandite ((Fe, Ni) 9 S 8), magnetite (Fe 3 O 4), Fe-Ni alloy (FeNi 3) and bornite (Cu 5 FeS 4). Table 1. The chemical compositions of low-grade nickel matte.
The decreasing grade of natural ores and increasing environmental burden of industrial residue and metal scrap make recycling a strong driving force of economic ... nickel, extraction, separation, recovery, waste Li-ion, Ni–Cd and NiMH batteries, leaching, name of different extractants etc. ... such as Pentlandite ((Ni,Fe) 9 S 8), Millerite ...
Bioleaching of a pentlandite–pyrrhotite–chalcopyrite concentrate resulted in about 60% nickel extraction after about a month. Thermophiles such as Acidimicrobium, …
Pentlandite is one of the major nickel – hosting sulfide minerals. In sulfide flotation, the recovery of pentlandite is often associated with the recovery of nickel. Different nickel recoveries have been observed from various ores (Heiskanen et al., 1991) and, in some cases, from different areas of the same deposit. Besides other factors ...
summarized. Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic sea nodules, and ...
The invention discloses a simple method for extracting pentlandite monominerals. The method is characterized in that copper-nickel sulphide ore is used as a raw material, and a magnetic field of which the strength gradually increases is applied to the copper-nickel sulphide ore through a permanent magnet, so as to achieve stage-by-stage magnetic …
Nickel and its extraction - Download as a PDF or view online for free. ... These are ores such as pentlandite, which contain about 1.5%, nickel associated with copper, cobalt and other metals. They are predominant in more temperate regions such as Canada, Russia and South Africa. Canada is the world's leading nickel producer and …
A.3a Flow Sheet for Extraction of Nickel from Pentlandite via Pyrometallurgical Route Nickel concentrate (10% Ni, 2% Cu, impurities: S, Cu, Fe, Co, As, Ag, Pt) Cu slag Slag discard (reduction in S, all Ni and Cu retained as sulfides, preferential oxidation of Matte (50% Ni, 25% Cu) some impurity sulfides) Slag 2FeS + 3O2 = 2FeO + 2SO2 + 932 kJ
Phase evolution during pentlandite oxidation at 530 °C, 560 °C, 590 °C, and 600 °C. The errors in the weight fractions are within ±3%, as determined by Rietveld quantitative phase analysis.
In sulfide nickel deposits throughout the world, pentlandite and pyrrhotite are commonly found together along with varying amounts of chalcopyrite and platinum group minerals (PGMs). The mafic or ultramafic host silicates associated with the sulfide mineralisation commonly exhibit a complex assemblage of magnesium bearing silicates, many of which …
The main methods have been extensively reviewed for nickel extraction from nickel sulfide ores which maybe are potentially applicable to provide new ideas for smelting technology innovation of nickel and even other similar metals. ... The controlled oxidation of feed sulfide minerals demonstrated that the hydrothermal oxidation of pentlandite ...
A.3a Flow Sheet for Extraction of Nickel from Pentlandite via Pyrometallurgical Route. Nickel concentrate (10% Ni, 2% Cu, impurities: S, Cu, Fe, Co, As, Ag, Pt) Cu slag. …
Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently occurs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain … Expand
The mixture of the nickel concentrate and metallic iron powder was heated at 950 °C followed by slow cooling to 750 °C and over 90% of nickel was extracted from pentlandite into the ferronickel alloy phase. The alloy contained 20–30 wt% nickel and had a characteristic grain size of 40–50 μm. Keywords. Ultramafic nickel sulfide ore
Limited studies have explored the extraction of nickel from serpentine-rich ores, despite the presence of significant nickel reserves in such ores. Understanding …
Nickel usually occurs in nature as sulphide or oxide forms, and its concentrates commonly contain different proportions of iron sulfides (pyrite and pyrrhotite) and Ni (pentlandite). The nickel extraction from low-grade ores has been conducted in the biohydrometallurgical process employing chemolithoautotrophic microorganisms …
The mineral system characteristics of the Sudbury Ni-Cu-Co-PGE sulfide ore deposits. Peter C. Lightfoot, in Nickel Sulfide Ores and Impact Melts, 2017 Cobalt. Pentlandite is the principal host for the bulk of the cobalt in the Sudbury ores (Naldrett, 1961), and there is a range in Ni/Co ratio depending on whether the pentlandite was formed in a contact or …
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 …
Highlights. •. Alkaline glycine is used to leach Ni and Co from low grade sulfide ores high in magnesium. •. Ion exchange resin Purolite S930+ was used to …
The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of higher …
Pentlandite is the most common and abundant mineral used for nickel extraction, accounting for over 60% of worldwide nickel production, mostly from sulfide copper–nickel ore deposits [13,14,15]. …
Nickel extraction, however, was reported to be affected by the type of alkali sulfate used with the highest Ni extractions occurring with the use of lithium sulfate (Li 2 SO 4); the addition of 12 wt% Li 2 SO 4 increased Ni recoveries to above 60% when roasting concentrate at 500°C for 4 hours versus only 18.4% Ni recovery in the absence of ...
The pentlandite ore sample with 0.58% Ni was crushed to a size of −2.36 mm before grinding and flotation. Mineralogy analysis shows that pentlandite was the main nickel mineral with small amounts of millerite, violarite and heazlewoodite while chrysotile, antigorite and lizardite were the main serpentine minerals.
"A new hydrometallurgical process for nickel extraction from a low grade laterite ore such as limonite has been developed by RIST and POSCO. This POSCO Nickel Extraction Process (PosNEP) consists of five main processes: ore reduction using hydrogen as a reductant; acid leaching at atmospheric pressure and temperature; …
General Pentlandite Information : Chemical Formula: (Fe,Ni)9S8 : Composition: Molecular Weight = 771.94 gm Iron 32.56 % Fe Nickel 34.21 % Ni Sulfur 33.23 % S _____ 100.00 % : Empirical Formula: Fe 2+ 4.5 Ni 4.5 S 8: ... Pentlandite. Comments: Ore sample of a mixture of several sulfide minerals: pentlandite, chalcopyrite, ...
Pyrrhotite ubiquitous intergrowth with pentlandite, the primary mineral of nickel sulfide. Pyrrhotite is frequently found in connection with a range of ore deposits, including those containing nickel-copper, lead-zinc, and platinum group elements (Becker et …
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. …
Published: 18 June 2020. Efficient Synchronous Extraction of Nickel, Copper, and Cobalt from Low–Nickel Matte by Sulfation Roasting‒Water Leaching Process. Qiangchao …
Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic …