Hydro-Pyro Integration in the processing of Nickel Laterites

The current FeNi Nickel Pig Iron (NPI) and Ni matte smelters operate with nickel laterite ore that meet fairly specific criteria in terms of their Ni grade, Fe/Ni, Ni/Co and SiO2/MgO ratios. These are shown in : Table 2.1. Table 2.1 Characteristics of Nickel Laterite ore for smelting into FeNi, NPI or Ni Matte. Description : Fe/Ni .

Enhanced methods for nickel recovery from low-grade ores ...

An excellent example the use of PAL on low-grade lateritic nickel ores is the Ambatovy mine in Madagascar, a joint venture between Sherritt, Sumitomo, and Korea Resources. This is one of the largest lateritic nickel mines in the world, and has the capacity to produce 60 000 tonnes of refined nickel a year, for at least 29 years.

Roasting and Leaching Behavior of Nickel Laterite Ore ...

Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. The sulfation-roasting-leaching process has the potential to change this scenario once it can be applied to all kinds of nickel laterite ores and does not consume much acid, as in the atmospheric leaching process.

The nickel laterite challenge - Australian Mining

Nickel occurs in essentially two ore types; magmatic sulphides and ('wet' or 'dry') laterites. The sulphides typically are found hundreds of metres below ground with …

Selective Reduction of Laterite Nickel Ore

nickel ore resources from sulphide ore becomes rare which makes nickel laterite ore as the future of nickel extraction. Unlike sulphide nickel ore processing, laterite nickel ore processing requires higherprocessing energy through smelting.Therefore, a novel method to process laterite nickel ore using lower energy is needed.

Nickel carriers in laterite ores and their influence on ...

Resumo: (EN) The influence of nickel carriers minerals, contained in three different laterite ore samples, on their extraction by a sulfation-roasting-leaching process, is investigated in this paper. X-ray diffraction, scanning electron microscopy coupled to energy dispersive spectroscopy and chemical analyses by atomic absorption spectrometry ...

Processing of Nickel Laterite Ores on the Rise

The laterite ores constitute nearly 80% of the total nickel reserves and they can be the potential source of nickel in the event of the depletion or degradation of the sulphide ores. However, the cost associated with the conventional processing of the laterite ores forbids its technological development.

Ni-Co Laterites─A Deposit Model - USGS

Dalvi and others, 2004). Recently, an ore-processing technique was developed to treat the entire laterite profile. This innovation, DNi, developed by Direct Nickel, is a hydrometallurgical process capable of extracting 95 percent of the Ni and 85 percent of the Co in laterites (Direct Nickel, 2010). With the

Nickel Laterite's Integral Role in the Coming Nickel Boom ...

Currently, the sulphide ore mainly feeds class 1 nickel users, and the laterite ores mainly feed the stainless steel industry (which, by the way, currently accounts for 2/3 of the global nickel demand). Nickel Laterite Ore Processing. Nickel laterite ore processing depends on the zone from which the ore is mined.

Lateritic nickel ore deposits - Wikipedia

12%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 physical properties of the ore …

US4410498A - Acid leaching of nickel from serpentinic ...

Sulphuric acid leaching has been used in the treatment of lateritic ores for the recovery of nickel and cobalt therefrom. However, in order to obtain good extraction from these ores, prolonged treatment using acid of high strength and also using high pressures and recycling steps have been necessary. In the improved method of the invention nickel and cobalt is solubilized from high-magnesia ...

Hydrometallurgical process for the separation and recovery ...

nickel (and cobalt) from laterites, as the demand for stainless steel continues to grow and the sulphide deposits become depleted (McDonald and Whittington, 2008). Nickel laterite ores can be broadly characterised as dry-land (e.g. deposits found in Greece, Albania, Western Australia) or tropical (e.g. deposits found in Cuba, New Caledonia, Brazil)

Pelletizing Aids in Upgrading Low-Grade Nickel Laterites

Low-grade nickel laterite ores hold strong potential as a source of feedstock for ferronickel and nickel matte production, but only if the nickel content can be economically upgraded. Processing low-grade nickel laterites with existing technology is problematic for several reasons, most notably the ore grade requirements of current production ...

Nickel Laterites in SE Asia - CSA Global

• What are nickel laterites and how do they form? • Range of deposit types • Global distribution of lateritic nickel resources • Exploration and resource delineation • Processing options for nickel laterite ores • Laterite processing –future trends • What helps to create a successful nickel laterite venture? PRESENTATION OUTLINE

Nickel Laterites: The World's Largest Source of Nickel ...

The Goro Nickel Mine is one of the world's largest Nickel Laterite Mines. The project is owned by Vale (69%), a joint venture company composed of Sumic Nickel Netherlands, Sumitomo Metal Mining and Mitsui (21%) and the remaining 10% by three provinces within New Caledonia. The mine has a mineral reserve of 124 million tonnes, with an average ...

Characterization of Weda Bay nickel laterite ore from ...

The correlation between mineralogy, mechanical and textural behaviour of the laterite ores during the ore processing is quite complex (MacCarthy et al., 2015; Quaicoe et al., 2013).A full characterization of different laterite ores is necessary to predict the efficiency of the nickel recovery when different types of ores are blended, which is a common practice in mineral processing industry ...

Extraction of Nickel | Nickel Ore Mining | Mining ...

Extraction of Nickel. This paper introduces the extraction of nickel process and characteristics of laterite nickel ore dressing, highlights the nickel ore crushing, washing in the nickel production process design.. 1 Description of nickel ore. The laterite nickel ore is complex in composition and can be roughly divided into two types: limonite type and silicon magnesium-nickel type.

(PDF) Nickel Laterite Ore Deposits: Weathered Serpentinites

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 concentrated to ...

Nickel and cobalt losses from laterite ore after the ...

1. Introduction. Nickel laterite ore can be physically and chemically divided into two groups: saprolitic and limonitic. Saprolitic ores are mainly composed of silicates and hydrous silicates, whereas limonitic ores are basically composed of oxides and hydroxides, .Nickel, in laterite ore, appears mainly in the crystalline lattice of iron oxides/hydroxides and silicates, replacing iron and ...

Chemical composition of nickel laterite ore by fusion ...

Over 60 percent of world nickel production (nickel metal based) is used for the making of stainless steel. There are mainly two types of resources for nickel mining – sulfide and laterite (oxide) ores. More than 70 percent of world nickel resources on land are found in laterite ores.

nickel processing - Extraction and refining | Britannica

From laterite ores. Being free of sulfur, laterite nickel deposits do not cause a pollution problem as do the sulfide ores, but they do require substantial energy input, and their mining can have a detrimental effect on the environment (e.g., soil erosion). The range of process options is limited by the nature of the ore.

Guidelines for the safe carriage of Nickel Ore

The nickel ore schedule was first introduced in the 2013 edition of the IMSBC Code and became mandatory on 1 January 2015. Despite the numerous circulars on the safe carriage of nickel ore and its entry in the IMSBC Code, liquefaction incidents still occur. While not exhaustive, the IMSBC guidelines below should assist

Composition and origin of lateritic nickel ore at Tagaung ...

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 physical properties of the ore are very ...

SEQUENTIAL LEACHING OF NICKEL LATERITE ORES

to nickel laterite ores. Three samples were chosen from a typical laterite profile (Figure 1), one from the saprolitic zone (termed saprolite), one from the clay zone (termed nontronite) and one from the limonitic zone (termed limonite). A five-step leaching protocol was developed.

HIGH PRESSURE SULPHURIC ACID LEACHING OF LATERITIC …

from the lateritic nickel ore sample. With the increase of acid/ore ratio, dissolution ratio values of Ni and Co increased up to acid/ore ratio of 0.3, and above 0.3, lower dissolution ratio values were obtained. Although leach residues obtained after leaching at acid/ore ratio of 0.3 contained mainly hematite, quartz

Nickel Laterite ore deposits: Weathered Serpentinites ...

"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 concentrated to over 1.0 wt% and is hosted in a variety of

HYDROMETALLURGICAL PROCESSING OF LATERITIC NICKEL …

lateritic nickel ore was initially neutralized and purified from its basic impurities by a two stage iron removal process under the optimum conditions determined experimentally. Then, nickel and cobalt were precipitated in the form of mixed hydroxide precipitate from the purified leach solution by a two ...

Nickel | BHP

Nickel is a silvery white, naturally occurring metallic element with a light golden tinge. There are two main types of nickel deposits - laterite and sulphide – each requiring a different extraction technique. Stainless steel. Nickel sulphide and laterite ore are used to make nickel metal, predominantly for the production of stainless steel.

Ni-Co laterite deposits of the world - USGS

Online Spatial Data; Ni-Co laterite deposits of the world. Location, type, mineralogy, name, tonnage and grade, and geological setting for 120 deposits of this type.

CA874700A - Flotation of laterite nickel ores - Google Patents

nickel ores laterite nickel laterite ores Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Application number CA874700A Inventor Weston David Original Assignee Weston David

Determination of Chemical Composition of Nickel Laterite ...

of Nickel Laterite Ore by Fusion Method . nickel . Introduction . Nickel is one of the most important base metals for modern infrastructure. ver 60O percent of world nickel production (nickel metal based) is used for the making of stainless steel. There are mainly two types of resources for nickel mining – sulfide and laterite (oxide) ores.

Extraction of Nickel, Cobalt and Iron from Laterite Ores ...

12%Lateritic ores are formed by prolonged weathering of ultramafic rocks. The laterite deposits exhibit graded layers of ore, with high iron, low nickel ore on top and low iron, high nickel ore below. The low iron (< 15 % Fe) ores containing 1.7 — 2.3% Ni are treated by pyrometallurgical processes to produce ferronickel or matte.