RU2333972C2

FIELD: metallurgy. SUBSTANCE: invention concerns metallurgy field. Particularly it concerns nickel and cobalt recovery. Method of nickel and cobalt recovery from nickel- and cobalt-containing laterite ores includes burning of source ore in deoxidising atmosphere in rotary calciner for selective reduction of nickel and cobalt, at that before burning reducer either is not added at all or is ...

Extraction of Nickel from Garnierite Laterite Ore Using ...

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 feldspar, forsterite, tremolite, halloysite, quartz, and ...

Atmospheric leaching characteristics of nickel and iron in ...

 · A limonitic laterite ore was leached to extract nickel and iron in the presence of sodium sulfite and the extraction mechanism was investigated. Based on the leaching results, the extraction correlation between nickel and iron an appropriate scope for selective leaching is discussed. 2. Experimental2.1. Materials2.1.1. Limonitic laterite ore

Lexique

Latérite : roche rouge argileuse ressemblant à de la brique (vient du latin later, brique) et riche en fer. Fréquente en Afrique, Guyane et Inde. Fréquente en Afrique, Guyane et Inde. Malléable : se dit de matériaux qui peuvent être transformés en feuilles très fines pour l''emballage .

Extraction of nickel and cobalt from reduced limonitic ...

 · Other methods for metal extraction from nickel laterite have been investigated such as atmosphere acid leaching (AL) (McDonald and Whittington, 2008), reduction roasting–sulfuric acid leaching (De Graff, 1980, Chang et al., 2008) and chlorination–water leaching (Kanungo and Mishra, 1997). However, these methods show lower selectivity in the ...

Nickel mining in New Caledonia

Nickel mining in New Caledonia is a major sector of the New Caledonian economy. The islands contain about 10.3 million tonnes of nickel reserves, about 11% of the world''s total. With an annual production of 200,000 tonnes in 2020, New Caledonia was the world''s fourth largest producer after Indonesia (760,000), Philippines (320,000), and Russia (280,000), followed by Australia (170,000) and ...

SITUATION ECONOMIQUE ET SOCIALE REGIONALE 2013

Son exploitation est très importante dans la région et dépasse de loin l''extraction de sable. La latérite se trouve principalement dans les communes de Bokhole, Richard-Toll et Ndiayène Pendao. Au cours de cette année, une quantité importante de 123663 m3 de latérite a été extraite dans la région, soit 2/3 de substances minérales

Laterite

Laterite is both a soil and a rock type rich in iron and aluminum and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and prolonged weathering of the underlying parent rock.Tropical weathering (laterization) is a prolonged process of chemical weathering which ...

Extraction de nickel Marché 2020 | Analyse de l''industrie ...

 · Selon Market , le rapport intitulé Marché mondial Extraction de nickel 2020-2025 fournit des tendances et des enquêtes récentes sur le marché, les perspectives de croissance économique, la demande de produits et les prévisions futures. L''étude détaillée du marché Extraction de nickel donne un aperçu inclusif pour comprendre la définition, la liste des fournisseurs, la ...

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.

Solvent Extraction of Cobalt From Laterite-Ammoniacal ...

Solvent Extraction of Cobalt From Laterite-Ammoniacal Leach Liquors by United States. Bureau of Mines., 1980, s.n edition, in English

Etude technique et économique des briques de latérite ...

Par ailleurs, la production des briques de latérite taillée avec les moyens d''extraction moderne, permettrait de récupérer les fonds investis en 3 ans pour une durée de projet de 10 ans. Pour toutes ces raisons et pour impulser plus de dynamisme à l''utilisation des briques de latérite taillée dans les constructions, il serait ...

(PDF) Nickel laterite processing and electrowinning ...

Laterite deposits typically occur in layers stage, ammonia leach, solvent extraction, and electro- ranging from zero to 40 m in depth below the surface winning to recover the non-ferrous metal values, Kumar and may contain the following geological formations: et al. (1990).

Effect of Magnesium on Pressure Leaching of Moa Laterite ...

La teneur en magnésium du minerai de latérite a un impact important sur la quantité d''acide sulfurique requise pour atteindre l''objectif d''extraction de nickel par le procédé de lessivage acide à haute pression (HPAL), tant par consommation directe d''acide lorsque les minéraux porteurs de magnésium sont dissous, que par des effets ...

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 ...

US3661564A

A method for the recovery of nickel and cobalt from laterite with the elimination of iron, wherein the laterite is divided into a major and a minor portion and the minor portion is treated with hydrochloric acid to form a suspension. The major portion of laterite is mixed with the suspension to form a slurry which is roasted to form cobalt and nickel chloride.

Etude géologique et géomécanique des latérites de Dano ...

de 1,10m sous forme de lentille de géométrie variable. De la profondeur 2,30 à 4,20 m, la latérite est compacte, de couleur ocre-rouge, tachetée de blanc et est marquée par un fin niveau de 10 cm de latérite graveleuse. De 4,20 à 5, 20 m (fond de la

Laterite

Laterite is both a soil and a rock type rich in iron and aluminum and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and …

RECOVERY OF NICKEL IN LEACHING OF LATERITE ORES ...

The present invention relates to a process for the extraction of nickel from laterite ores, especially in which the process is a mixed chloride leaching process. Nickel is extracted from solution obtained using an oxime. In particular, leach solution is subjected to a liquid/solids separation step followed by steps for separation of iron and of ...

EXPLOITATION DE CARRIERE EXTRACTION DE GRANULATS

Les opérations d''extraction de matériaux sont prévues sur une période de 30 ans incluant la remise en état du site. L''abattage de roche massive est effectué par la réalisation de campagnes de minage. Les matériaux fragmentés sont déversés sur un déversoir où ils sont concassés et criblés sur des postes fixes avant d''être

Recovery of Nickel from Selectively Reduced Laterite Ore ...

of laterite ore using sulphuric acid, including the effects of pretreatment of the laterite and leaching parameters on the nickel extraction under the atmospheric condition and lower temperature than 343K. 2. Experimental 2.1. Sample Laterite ore from the deposit of Sebuku Island (Indo-nesia) was used as an original laterite sample. Prior to the

EXTRACTION OF NICKEL AND COBALT FROM LATERITIC …

EXTRACTION OF NICKEL AND COBALT FROM LATERITIC ORES BY NITRIC ACID Saka, Onur M.S., Department of Metallurgical and Materials Engineering Supervisor: Prof. Dr. Yavuz A. Topkaya December 2014, 132 pages This thesis study is related to the extraction kinetics of nickel and cobalt from lateritic nickel ores from Gördes/Manisa region of Turkey.

Cobalt Extraction Technologies | Nexant

However, Cobalt extraction and its production is complicated by its status as a byproduct of copper and nickel production. With sedimentary copper-cobalt sources in the DR Congo under threat by legal changes, security concerns, and poor logistics, laterite processing options are …

Evaluation of selectivity of sequential extraction ...

 · Rare earth elements (REE) speciation in laterites are commonly estimated from sequential extraction procedure (SEP). In this study, the selectivity of a 5-steps SEP protocol was evaluated on individual synthetic Ce-material and applied to a well-characterized lateritic profile developing over a granite bedrock (Madagascar).

Manganese and cobalt redox cycling in laterites ...

 · 1. Introduction. Cobalt is a critical metal essential for a sustainable modern world. It is increasingly in demand for use in rechargeable batteries for solar power and electric cars, permanent magnets in wind turbines, as well as in core applications such as superalloys to increase the strength and resistance of materials, electronics, catalysts, pigments and healthcare (The Cobalt Institute ...

organigramme d extraction de latérite de nickel

Dans les diagrammes de dispersion (fig. 6 a 7 a 8 a et 9 a) l interpolation entre les teneurs obtenues au cours de l extraction en mode cinétique par le Tamm sous U.V. permet de visualiser leur évolution en fonction de Fe et de vérifier l existence de une ou plusieurs phases dans un même échantillon.

Exploitation des carrières de basalte : Cette richesse qui ...

 · A preuve, ces derniers mois, le Conseil rural a encore attribué 20 ha à la Sococim dans la zone de latérite de la colline de Ngoundiane. Cette cimenterie avait sollicité une assise de 50ha.

Process for extraction of nickel, cobalt, and other base ...

1. Process for extraction of nickel, cobalt, and other metals from laterite ores by heap leaching, characterized by being comprised of crushing (I) obtaining a maximum grain size between approximately 25.0mm and approximately 50.0mm in secondary crushing, and a maximum grain size between approximately 12.5mm and approximately 6.30mm in tertiary crushing, agglomeration (II), stacking …

Translate latérite from French to German

Larco est une entreprise spécialisée dans l''extraction et la transformation du minerai de latérite, l''extraction de lignite et la production de ferronickel et de sous-produits. German Larco ist ein Spezialunternehmen für die Extraktion und Verarbeitung von Lateriterz, den Abbau von Braunkohle und die Produktion von Ferronickel und ...

Roasting and Leaching Behavior of Nickel Laterite Ore ...

 · 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. The sulfation-roasting-leaching process has the ...

Gisements de minerai de nickel latéritique

La mine typique de latérite de nickel fonctionne souvent comme une mine à ciel ouvert ou une mine à ciel ouvert. Extraction . Les latérites de nickel sont un type très important de gisement de minerai de nickel. Ils sont en train de devenir la source la plus importante de nickel métal pour la demande mondiale (actuellement deuxième après).

WO2014153639A1

The invention provides a process for the leaching of a laterite ore or concentrate for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step in acidic mixed chloride solution to leach nickel from the laterite ore. Nickel is extracted with an oxime at a lower pH than other processes for extraction of nickel from ...

Caractérisation des sols latéritiques utilisés en ...

- le deuxième chapitre est consacré aux utilisations routières de la latérite dans quelques pays de l''Afrique sub-saharienne ; - le troisième chapitre présente la Côte d''Ivoire et la façon dont les latérites sont considérées dans ce pays ; - le quatrième chapitre présente les résultats de l''étude qui constitue le cœur de …