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Nickel - Wikipedia

Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer ...

Beneficiation of Low-Grade Laterite Nickel by Calcination ...

in nickel recovery and grade were investigated. EXPERIMENTAL SECTION A low-grade sample of laterite nickel was taken from Chahgheib deposit located in Bavanat-Fars province, Iran. First, ore was crushed to -150 µm with two crushing steps (jaw and cone crushing) and after that, a milling

Mineralogy Notes

In a very general way, metamorphic environments may be classified as low-grade metamorphic (LGM) (temperatures of 60 º to 400 º C and pressures .5 GPa (=15km depth) and high-grade meta morphic (HGM) (temperatures > 400 º and/or pressures > .5GPa). Minerals characteristic of low- grade metamorphic environments include the zeolites, chlorites ...

Application of the Mineralogy and Mineral Chemistry of ...

The mineralogy and mineral chemistry of carbonates from various hydrothermal deposits, including volcanic-hosted Au-Cu epithermal, "Chilean Manto-type" Cu(-Ag), stratabound Mn, and Ag-Ba vein deposits from Spain and Chile, were investigated. Dolomite-ankerite (±siderite) was found in variable amounts within the epithermal deposits and associated hydrothermal alteration, whereas calcite ...

(PDF) Finding Nickel in Olivine

investigating the feasibility of low grade ores for th e production of nickel (McDonald and Whittingt on, 2008 ; Zhai et al., 2009 ). Olivine is an iron -magnesium silicate containin g relatively ...

Mineralogy and crystal chemistry of a low grade nickel ...

To acquire understanding of Ni enrichment from laterite ore, the mineralogy and crystal chemistry of a low grade limonite type nickel laterite ore sample assaying 0.97% Ni from Indonesia were ...

PROCESSING OF LOW-GRADE NICKEL BEARING LATERITES

the amorphus crystal structure the stable crystal structure The iron in these Ni - bearing minerals and ores is appeared as Fe 2 O 3.nH 2 O and as a nontronite (Fe,Al) 2 (Si 4 O 10)(OH) 2.nH 2 O. The oxide-laterite ores are with low nickel content. The generaly, nickel and iron are as Ni-Fe-limonite (Fe,Ni)O(OH).nH 2

Mineralogical effects on the dense medium separation of ...

Pillay K. Mineralogical effects on the dense medium separation of low grade nickel sulfide ore. [Thesis]. University of Cape Town,Faculty of Engineering & the Built Environment,Department of Chemical Engineering, 2015 [cited yyyy month dd].

Synchronous Extraction of Valuable Metals from Low-Nickel ...

Zhu D-Q, Cui Y, Hapugoda S, Vining K, Pan J (2012) Mineralogy and crystal chemistry of a low grade nickel laterite ore. Trans Nonferrous Metals Soc …

High Temperature Pressure Oxidation of a Low-Grade Nickel ...

High temperature pressure oxidation of a low-grade nickel concentrate was examined to demonstrate the potential benefits and shortcomings of this approach. The high iron sulfide content ensured that acid generation was much greater than for higher grade concentrates. This results in the formation of basic iron sulfate phases and a significant amount of sulfuric acid.

Metals from Ores: An Introduction

Mineral Metal Produced Non-metallic Use Bauxite Al Refractories Chromite Cr Refractories, Chemicals Magnetite Fe Pigment Zircon Zr Refractories Beryl Be Gemstone Refractory Ore with a high aluminium oxide (the sum Cr 2 O 3 and Al 2 O 3 is more than 59%) would be suitable for the manufacture of refractoriness. Chemical Low-grade chromites, that ...

Nickel - CORE

Mineralogy There are numerous nickel-bearing minerals, although some of these are very rare and a few occur only in meteorites. Nickel may substitute for other elements, especially iron and cobalt, in many minerals. Economic concentrations of nickel-bearing minerals occur as sulphides and in laterites. Pentlandite (see Table 2) is

Geology, mineralogy, and geochemistry of low grade Ni ...

Geology, mineralogy, and geochemistry of low grade Ni-lateritic soil (Oman Mountains, Oman) Author links open overlay panel Salah A. Al-Khirbash. Show more. Share. ... Mineralogy and crystal chemistry of a low grade nickel laterite ore. Trans. …

Extraction of Nickel from Magnesia–Nickel Silicate Ore ...

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 comprising metallic Ni and that …

Agglomeration and column leaching behaviour of nickel ...

Abstract: Nickel (Ni) laterites account for about 60-70% of the world's nickel mineralization. The processing of low grade (e.g., 1% Ni) laterite ores is favoured by the use of the more cost-effective hydrometallurgical techniques (e.g., atmospheric agitated tank or heap leaching) instead of smelting.

Ekaterina SELIVANOVA | Doctor of Philosophy | Kola Science ...

The feasibility of processing low-grade copper-nickel ores by heap bioleaching was investigated. ... The crystal structure of nikmelnikovite, Ca 12 Fe ²⁺ Fe ³⁺ 3 Al 3 (SiO 4 ) 6 (OH) 20, a ...

Hapugoda SARATH | Mineralogist | BSc, MSc, PhD | The ...

To acquire understanding of Ni enrichment from laterite ore, the mineralogy and crystal chemistry of a low grade limonite type nickel laterite ore sample assaying 0.97% Ni from Indonesia were ...

Contrasted mineralogical composition of the laterite cover ...

Mineralogy and crystal chemistry of a low grade nickel laterite ore. Transactions of Nonferrous Metals Society of China, Vol. 22, Issue. 4, p. 907. Transactions of Nonferrous Metals Society of …

American Mineralogist Papers in Press

The crystal chemistry of arsenian pyrites: A Raman spectroscopic study: He Zhang, Gujie Qian, Yuanfeng Cai, Christopher Gibson, and Allan Pring: 10.2138/am-2021-7806: link: Chemical variability in vyacheslavite, U(PO 4)(OH): crystal-chemical implications for hydrous and hydroxylated U 4+, Ca and REE phosphates

Atmospheric acid leaching of nickel laterites: effect of ...

The mineralogy and chemistry of complex, low grade nickel (Ni) laterite ores impact on their atmospheric leaching (AL) for the extraction of value metals (i.e., Ni and cobalt (Co)). This study

CRYSTAL LAKE DRILLS DISCOVERY HOLE - HIGH-GRADE NICKEL ...

The exploration model developed by Crystal Mining's partner Emerald Lake Development Corp., is to explore for massive sulphide bodies which may occur below the disseminated low-grade copper-nickel-cobalt mineralization. In late 2015 the Company drilled in …

(PDF) Mineralogical characterisation of a sample of an ...

Abstract. Although 70% of the world's nickel resources are contained in laterites, nickel from such ore deposits currently account for only 40% of the world's nickel production. It is widely ...

Minerals | Free Full-Text | Nickel Laterites—Mineralogical ...

Nickel laterite ore is used to produce nickel metal, predominantly to manufacture stainless steel as well as nickel sulfate, a key ingredient in the batteries that drive electric vehicles. Nickel laterite production is on the rise and surpassing conventional sulfide deposits. The efficiency of mining and processing nickel laterites is defined by their mineralogical composition.

Mineralogical characterization and design of a treatment ...

Recently, the mineralogy and crystal chemistry of a low-grade nickel laterite ore (0.97 wt.% Ni; 40.09 wt.% Fe) from Indonesia were studied by Zhu et al. (2012); Ma et al. (2013) used Philippine laterite ore to design a technical route based on its mineralogical analysis; Cristina et al. (2014) investigated the textures, mineralogy and ...

Controllable Phase Transformation in Extracting Valuable ...

Materials. The Chinese low-grade nickel sulphide ore was taken from Jinchuan, China. The chemical composition of the ore is given in Table I.As shown in Table I, the minerals contained 4.63% Ni, 2.75% Cu, 32.23% TFe, 21.5% S, 10.13% MgO, and 14.00% SiO 2.The XRD patterns of the raw ore are shown in Fig. 1.The main crystal mineral phases of the Chinese low-grade nickel …

High Temperature Pressure Oxidation of a Low-Grade Nickel ...

By Western Australian standards, typically 20% and even up to 25%, the nickel grade of the feed is low and hence the concentrate is referred to herein as low-grade. The nickel concentrate (moist when received) was composed largely of sulfide minerals that when exposed to air were oxidized.

Frontiers | Mineralogy of Nickel and Cobalt Minerals in ...

Located in the East Kunlun Orogen, China, the Xiarihamu magmatic nickel–cobalt sulfide deposit is the country's second largest deposit of this type. It was formed in special early Paleozoic with low copper grade (0.14 wt%) compared with other deposits of the same type. The mineralogy of nickel and cobalt minerals, which are direct carriers of these elements, can clearly reflect their ...

Mineralogical characterization of low-grade nickel ...

Introduction. Nickel laterites are mainly due to the chemical weathering of mafic/ultramafic rocks associated with active Cretaceous to Late Tertiary plate collision zones (Indonesia, the Philippines, New Caledonia, the Ivory Coast; Cuba, and Oman) (Kühnel et al., 1978, Linchenat and Shirakova, 1964, Nahon et al., 1982, Paquet et al., 1981).

Prehnite - Handbook of Mineralogy

Prehnite Ca2Al2Si3O10(OH)2 °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Orthorhombic. Point Group: mm2: Uncommon as crystals, tabular k f001g or prismatic to steep pyramidal, to 4.5 cm. Aggregates are fanlike, reniform, globular, stalactitic;

Metal, Iron, & Nickel | Some Meteorite Information ...

Later, I did a chemical analysis for Ni and obtained 600 ppm. This is a lot of nickel but is still 100 times too low for an iron meteorite. (Concentrations of cobalt, gold, and iridium were also much too low for a meteorite.) The DMG test is very sensitive to nickel and can lead to …