lateritic nickel ore deposits

A method for extracting Ni and other metals from lateritic ores by means of shock heating has been investigated. Shock heating releases some of the metal from its goethitic host. Even though the transformation of pure goethite to hematite is known to occur via intermediate hydroxylated phases, the effect of other metals such as Ni …

The large deposit of low-grade nickel ore Vardište in Bosnia Herzegovina is in close proximity to the largest Serbian Mokra Gora deposit; ... M. Leaching method selection for Çaldaǧ lateritic nickel ore by the analytic hierarchy process (AHP). Hydrometallurgy 2017, 171, 179–184. [Google Scholar]

Co in a laterite deposit. The Nickel Mountain deposit in Riddle, Oregon is a hydrous Mg-silicate type Ni laterite, as are the deposits in New Caledonia, California, and North Carolina. Murrin Murrin, in Western Australia, is a classic clay ore Ni-Co laterite deposit. The Cawse deposit in Australia, as well as many of the deposits in Cuba, are ...

ore deposits, but lesser known examples include lateritic gold deposits (e.g., Boddington in Western Australia) (Evans, 1993). Nickel laterites are the product of lateritisation of Mg-rich or ...

Typical nickel laterite ore deposits are very large tonnage, low-grade deposits located close to the surface. They are typically in the range of 20 million tonnes and upwards (this being a contained resource of 200,000 tonnes of nickel at 1%) with some examples approaching a billion tonnes of material.

CONCLUSION. Based on this study, it can be proven that topographical factors greatly influence the formation of nickel laterite deposits. On a gentle to moderate slope, the ore thickness or nickel mineral enrichment is quite high, while on a steep slope, it is still possible for nickel mineral enrichment to occur but not too much, depending on ...

Chen Baiyou, Liu Hongtao, Yang Ping, Sun Yuan. 2013. The basin metallogenic regularity of global Lateritic Nickel ore deposit[J]. Acta Geoscientica Sinica, 34(1): 202-206 (in Chinese with English abstract). Google Scholar. Chen Haoliu, Wu Shuibo, Fu Debin. 1993. Nickel Deposits[M]. Beijing: Geological Publishing House, 1 …

Nickel laterite ores account for over 60% of global nickel supply. They are the product of intensive deep weathering of serpentinites under humid tropical conditions. Nickel is...

Lateritic nickel ore. Lateritization of ultramafic igneous rocks (serpentinite, dunite, or peridotite containing about 0.2-0.3 percent nickel) often results in a considerable nickel concentration. Two kinds of lateritic nickel ore need to be distinguished: ... Laterites are economically most important for ore deposits, such as bauxite.

The nickel ore occurs in various forms, such as nickel silicate of the remaining/primary crust, and iron–nickel ore, redeposited or secondary-crust nickel-silicate crust ore. ... Many lateritic deposits have been buried by colluvium and alluvium. Despite these changes, the distribution of Au remains broadly similar to that of savanna ...

Abstract. Many types of mineral deposit form by weathering. For discussion in this chapter we have selected bauxite, nickel laterite and kaolin; we also describe supergene manganese and the supergene enrichment of sulphides. These mineral deposits are among the most important ores formed by weathering and supergene enrichment is one …

The latter results in increase of the nickel content of the saprolite located in the slope zones and topographic lows which further supports the concept of lateral Ni migration proposed by Quesnel et al. …

In Brazil, the same processes responsibleforthe formation of the thick lateritic mantle, which covers nearly 65 % of its territory, are also responsible for metal accumulation which forms, under special condition, the lateritic ore deposits. In the origin ofthose accumulation. the parent rock composition and/or the convergence of the biological and …

The SX-EW Method. SX-EW, or the Solvent Extraction – Electrowinning approach to lateritic ore beneficiation, is a hydrometallurgical method that relies on leaching, extractants, and electrowinning to produce nickel from ore. This process is often referred to as Leach Solvent Extraction – Electrowinning for its employment of a leaching step.

Two-dimensional coupled hydro-geochemical model for Ni laterite deposits is developed. Relationship of nickel distribution to …

The Lateritic Nickel-Ore Deposits. Jean-Jacques Trescases. Chapter. 840 Accesses. 3 Citations. Abstract. Nickel belongs to the transition metal family and shows close …

Goethite is the main iron bearing phase or host, which contains most of the nickel in the raw lateritic ore. Nickel laterites are becoming an increasingly important source of nickel and cobalt. 70% of the world's on shore nickel resources are laterite ores [16, 17]. Lateritic deposits are often located very close to the surface typically less ...

Their global distribution is shown in FIGURE 1. DEPOSIT CHARACTERISTICS Lateritic Regolith Nickel laterites constitute 60 to 70% of the world's Ni resources, but although they have been mined for about 140 years, until 2000 they accounted for less than 40% of global Ni production, the remainder being from sulfide ores.

Nickel-cobalt (Ni-Co) laterite deposits are supergene enrichments of Ni±Co that form from intense chemical and mechanical weathering of ultramafic parent rocks. These regolith deposits typically ...

The physical and chemical nature of a nickel laterite deposit is a function of many factors, including the composition of the parent rock, the tectonic setting, climate, topography (specifıcally, laterite morphology), and drainage. Nickel laterite ore is extracted using both selective and bulk mining methods in open cast mining operations.

This paper reviews the nature and genesis of nickel laterite mineralisation, and describes the relationship between deposit …

In Western Australia, at Kalgoorlie, lateritic Ni/Co-bearing deposits with kaolinite associated to goethite were formed by the alteration of serpentinized dunite and peridotite [Elias et al., 1981 ...

The recently discovered lateritic nickel ore deposit on the summit area of the Tagaung Taung contains about 40 million DMT nickel-saprolite ore with approximately 2% Ni. The serpentinite massif is covered with a thick weathering mantle consisting of saprolite, limonite, and an allochthonous lateritic surface layer. The thickness, nickel content, and …

The Lateritic Nickel-Ore Deposits. J. Trescases. Published 1997. Geology. Nickel belongs to the transition metal family and shows close chemical similarities with Fe and Co. Even more than these elements, it is concentrated in silicated Fe-Mg minerals by octahedral substitution with Fe2+ ions. Thus, the mean mineral/ matrix partition ...

Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel reserves. Considering the limitations of producing nickel from sulfide reserves, the use of oxide reserves (laterites) for the production of nickel will be of great importance in the ...

Abstract: 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 …

Many nickel deposits are known in Brazil, accounting for about 350 · 106 tons of ore with an average of 1.5% Ni. All are of the lateritic type. These deposits are scattered throughout the country, being rarer in the Northeastern Region and in the South, below 25 °S latitude. They are mainly associated with mafic-ultramafic massifs of large dimensions …

In southeastern China, lateritic REE deposits, known as ion-adsorption type deposits, have been the world's largest source of heavy REE (HREE). The lateritized upper parts of carbonatite ...

The Bitincke nickel laterite deposit, located in the south east of Albania, contains an estimated ore resource of 35.6 Mt of nickel ore with a grade of 1.2 % Ni. The deposit developed on peridotites within Late Jurassic ophiolites which were obducted in the Early Cretaceous and which form part of the Albanian Mirdita ophiolite zone. Limestones …

Nickel-lateritic ore is the most common source of nickel in Brazil. The Niquelândia deposit, located in State of Goias, is one of the most famous deposits due to the large amounts of nickel associated with both oxidized and mainly silicated ores. The terms oxidized and silicated ores are used to specify two different ores formed …

Most of the world's aluminium is mined from lateritic bauxite deposits. The largest producer is Australia's Weipa Mine in northern Queensland, while other countries with large reserves include Guinea, …

Magmatic sulphide and laterite deposits are the two major sources of the nickel metal in the world. Although the sulphide deposits have been operated since …

Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel …

A typical laterite ore may contain approximately 1–1.5% Ni with 40–50% Fe existing in the form of goethite [ (FeNi)O⋅ (OH)⋅ n H 2 O]. Laterite ores contain up to 40% of free and combined moisture, which is removed in the reduction process ( Ray et al., 2014 ). Similar to copper extraction, nickel ores are first beneficiated to produce ...

The morphological and chemical composition of chromite in the partially-serpentinized harzburgite and oxide zone of two laterite profiles at the Goro lateritic nickel deposit, New Caledonia, were investigated to: (1) establish the melt conditions at the mantle-crust boundary during ophiolite formation, and (2) characterize the weathering of …

S.K. Haldar, in Platinum-Nickel-Chromium Deposits, 2017. 9.2.3 Lateritic Model. The lateritic model is a surficial/near-surficial weathering/oxidation system resulting from physicochemical phenomena. It causes concentration of ore materials (Ni–Cu–Co–PGEs, Al, Fe, etc.) by the action of paleoclimatic environment and occurs within the ...