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WO2009033227A1 Limonite and saprolite heap leach process

A process for the recovery of nickel and/or cobalt from a lateritic ore by heap leaching, the process including the steps of : a) forming one or more heaps from a lateritic ore body wherein that lateritic ore body includes a blend of both limonitic and saprolitic type ores; b) leaching the one or more heaps with a leach solution; and c) recovering the nickel and/or cobalt from the resultant

Indirect bioleaching of low-grade nickel limonite and

Dec 01, 2017 The limonite and saprolite ores used in this study were obtained from Southeast Sulawesi, Indonesia and were ground to obtain the grain sizes of − 250 + 177 μm, − 177 + 149 μm, and − 149 + 75 μm.ED-XRF analysis of limonite and saprolite samples determined their chemical composition as summarized in Table 1.X-ray powder diffractrometry (XRD) analysis showed their mineralogical

Laterite-saprolite Au USGS

DESCRIPTIVE MODEL OF LATERITE-SAPROLITE Au By Gregory E. McKelvey BRIEF DESCRIPTION SYNONYM: Eluvial gold placers (Boyle, 1979), Au-bearing saprolite (Becker, 1895). DESCRIPTION: Au disseminated in laterite and saprolite that developed under conditions of tropical weathering (fig. 32) over a wide variety of bedrock types but distal to known bedrock gold deposits.

INDONESIAN JOURNAL ON GEOSCIENCE Geological Agency

limonite layers are totally 80 cm thick with both the dark red limonite (layer 3) and the reddish one (layer 4) attaining the same thickness of 40 cm. Decomposed base rock built the saprolite layers partially. Ultramafic rock as the basement of the weathering profile can still be recognized in saprolites (Figure 2). The upper reddish sap-

Saprolite Wikipedia

Saprolite (from Greek σαπρος = putrid + λιθος = rock) is a chemically weathered rock (literally, it means "rotten rock"). More intense weathering results in a continuous transition from saprolite to laterite. Saprolites form in the lower zones of soil horizons and represent deep weathering of the bedrock surface. In lateritic regoliths– regoliths are the loose layer of rocks that rest on the bedrock saprolite may be overlain by upper horizons of residual laterite; most of the original profile is preserved by residual soils

limonite and saprolite Translation into French

Translations in context of "limonite and saprolite" in English-French from Reverso Context: providing a representative sample of said lateritic ore containing said limonite and saprolite fractions, each having a characteristic compositional range of at least one indicator element,

distribution of limonite ore in world

Limonite yellow ore India ranks third in the production of manganese ore in the world next only to Russia. Iron Ore an overview ScienceDirect Topics Iron ores most in the form of taconite because deposits rich in magnetite and occurring radionuclides found in metallurgical slags in different countries is shown in Fig. Size distribution cold

White Cliff Ashlar Stone Quarry, Kalgoorlie-Boulder

White Cliff Ashlar Stone Quarry, Kalgoorlie-Boulder, Kalgoorlie-Boulder Shire, Western Australia, Australia : Many of the major buildings in Kalgoorlie-Boulder were made of stone from this quarry, the most prominent the clock tower in Hannan Street. The stone was

Indirect bioleaching of low-grade nickel limonite and

The limonite and saprolite ores used in this study were obtained from Southeast Sulawesi, Indonesia and were ground to obtain the grain sizes of −250 + 177 μm, −177 + 149 μm, and −149 + 75

Technical & Cost Comparison of Laterite Treatment

limonite and saprolite Part 2 present. ed the results of process modellingdone to quantify reagent and utility requirements and to calculate the variable portion of the operating costs. Part 3 extends the comparison to the fixed operating and capital costsand uses simple financial modelling to compare the different processes.

Study of selective reduction in lateritic nickel ore

Saprolite has higher basicity than limonite. The difference between magnesium and silicon oxide in lateritic nickel ore plays an important role in the selective reduction process. Therefore, in this work, the selective reduction of saprolite and limonite was carried out to reveal the effect of lateritic nickel ore basicity (MgO/SiO 2 ratio) on

INDONESIAN JOURNAL ON GEOSCIENCE Geological Agency

limonite layers are totally 80 cm thick with both the dark red limonite (layer 3) and the reddish one (layer 4) attaining the same thickness of 40 cm. Decomposed base rock built the saprolite layers partially. Ultramafic rock as the basement of the weathering profile can still be recognized in saprolites (Figure 2). The upper reddish sap-

Nickel and the Three Mineral Acids 2012-05-11a

the saprolite zone and below the saprolite zone is the un-weathered bedrock. The limonite zone contains primarily the mineral goethite or other hydrated iron oxides, containing nickel in the lattice of the iron minerals. The primary constituent of the saprolite zone is hydrated magnesium silicates

Nickel geochemistry of a Philippine laterite examined by

The Ni geochemistry of limonite and saprolite laterite ores from Pujada in the Philippines has been investigated using a mixture of laboratory and synchrotron techniques. Nickel laterite profiles are typically composed of complicated mineral assemblages, with Ni being distributed heterogeneously at the micron scale, and thus a high degree of

INDEPENDENT GEOLOGICAL REPORT ON THE NICKEL

Its limonite zone is usually thinner. The laterite profile in the ANLP consists of the ferruginous laterite, limonite zone, saprolite zone, and the saprolitic rock, arranged from surface going down. The limonite zone is characteristically iron oxide-rich where the predominant minerals are hematite and goethite while the saprolite zone is Mg-rich.

Nickel Laterites: The World’s Largest Source of Nickel

Jun 12, 2014 The saprolite and limonite zones tend to contain the higher grades of Ni and can range from 1.5-3% and 1.2-1.7% respectively. How do they form? Many factors affect the formation of nickel laterites, including the original rock the soil develops from, the climate, the rate in which weathering occurs, drainage of groundwater and the tectonic setting.

Nickel Supply Energized By Electric Vehicles S&P Global

Apr 04, 2018 Labor costs made up 26% of total costs at sulfide operations in 2017, compared with an average of 15% across limonite and saprolite operations. This is a result of sulfide operations — which exploit hardrock deposits, sometimes at significant depth — using more complicated mining techniques, which require a greater number of employees

Tsingshan pulls the matte out from under nickel's rally

Mar 04, 2021 Saprolite is formed from chemically-weathered rock formations. Saprolite and limonite are two types of laterite ore, the world's main nickel ore

Nickel Laterites in SE Asia CSA Global

LIMONITE Ni <0.8 0.8 to 1.5 1.5 to 4 25 to 40 5 to 15 1.8 to 3 0.3 0.01 5 35 to 45 10 to 25 15 to 35 0.1 to 0.2 40 to 50 0.5 to 5 Co <0.1 Fe >50 MgO <0.5 YELLOW LIMONITE TRANSITION SAPROLITE/ GARNIERITE/ SERPENTINE FRESH ROCK 0.02 to 0.1 TROPICAL LATERITE PROFILE

Goethite vs Limonite What's the difference? WikiDiff

As nouns the difference between goethite and limonite is that goethite is (mineral) an iron oxyhydroxide that is the main constituent of rust while limonite is (mineralogy) any of several natural hydrous iron oxides; often a mixture of goethite and hemite with clays and manganese oxide.

PIT49IAGI-P-172-04 : Moisture Content of Limonite and

IT49IAGI-P-172-04Moisture Content of Limonite and Saprolite Zone in Nickel Exploration Stage in Pomalaa, Kolaka, Southeast SulawesiNadia Soraya, Prayoga Adry...

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

Study of selective reduction in lateritic nickel ore

Saprolite has higher basicity than limonite. The difference between magnesium and silicon oxide in lateritic nickel ore plays an important role in the selective reduction process. Therefore, in this work, the selective reduction of saprolite and limonite was carried out to reveal the effect of lateritic nickel ore basicity (MgO/SiO 2 ratio) on

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

Skye Resources' Sulphation Atmospheric Leach (SAL)

development of a Sulphation Atmospheric Leach (SAL) process capable of treating limonite and saprolite ore from Skye’s Fenix project in Guatemala. By means of a phased approach, a novel atmospheric leach process was developed, first at bench scale and subsequently at pilot scale. The overall testing program starting with

Nickel and the Three Mineral Acids 2012-05-11a

the saprolite zone and below the saprolite zone is the un-weathered bedrock. The limonite zone contains primarily the mineral goethite or other hydrated iron oxides, containing nickel in the lattice of the iron minerals. The primary constituent of the saprolite zone is hydrated magnesium silicates

Research Detail Pages National Battery Research Institute

Oct 12, 2020 Saprolite also has higher content of magnesium oxide and less cobalt than limonite. The limonite and saprolite are then processed to refine the targeted elements. There are two well-known processes called pyrometallurgy and hydrometallurgy. Pyrometallurgy uses thermal treatment to enable valuable material recovery, while hydrometallurgy uses acid.

Nickel geochemistry of a Philippine laterite examined by

The Ni geochemistry of limonite and saprolite laterite ores from Pujada in the Philippines has been investigated using a mixture of laboratory and synchrotron techniques. Nickel laterite profiles are typically composed of complicated mineral assemblages, with Ni being distributed heterogeneously at the micron scale, and thus a high degree of

[PDF] Bacterial bioleaching of low grade nickel limonite

The leached Ni and Fe in the bioleaching experiments containing limonite ores (30% Ni and 5.6% Fe) was greater than that in abiotic controls (1% Ni and 0.1% Fe) with the pH range of 2.5 to 3.5. However, the bacterial consortia were less capable of bioleaching of Ni (2.5%) with the similar leached Fe (6%) from the saprolite ores.

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

Processing of Nickel Laterite Ores on the Rise

Most laterite ore deposits are made up of both limonite (iron rich) and saprolite layers, with the thickness of each layer varying significantly across different deposits. Limonite, which accounts for nearly double the amount of saprolite available globally, is more amenable to processing via hydometallurgical techniques, while saprolites are

Nickel Laterites in SE Asia CSA Global

LIMONITE Ni <0.8 0.8 to 1.5 1.5 to 4 25 to 40 5 to 15 1.8 to 3 0.3 0.01 5 35 to 45 10 to 25 15 to 35 0.1 to 0.2 40 to 50 0.5 to 5 Co <0.1 Fe >50 MgO <0.5 YELLOW LIMONITE TRANSITION SAPROLITE/ GARNIERITE/ SERPENTINE FRESH ROCK 0.02 to 0.1 TROPICAL LATERITE PROFILE

Indonesia's Battery Giant Needs $15.3b in Investments

Jul 15, 2021 According to a company's presentation, Industri Baterai Indonesia would need $160 million in investment to mine limonite and saprolite, metallic ores that rich in nickel, the main ingredient for lithium-ion batteries.

Local Topographic Model using Position Index for Analyzing

Chemical properties data from 413 drill holes were used for analysis to confirm the laterite zones –limonite and saprolite. By topographic model, slope position class of local ridges, upper slopes and lower slopes with the slope average of 9.82°, 16.05°, and 14.61° respectively, generally indicated the distribution of thick limonite zones

PROCESS FOR THE HYDROMETALLURGICAL TREATMENT OF A

Process for the treatment of a lateritic nickel/cobalt ore consisting of a mixture (2) of limonite and saprolite, characterized in that: the mixture (2) in the presence of an iron-precipitating agent is made into a pulp (1), having a solids content of between 10 and 40% by weight; the pulp undergoes a leaching operation (4) with sulphuric acid (5), at a temperature between 70° C. and the

Atmospheric leach process for the recovery of nickel and

Overall nickel and cobalt dissolution from both limonite and saprolite ores was of the order of 83 and 90%, respectively, with the high cobalt dissolution in this test due to the addition of sulfur dioxide gas during limonite leaching. Iron and sodium concentrations decreased to about 3.8 and 0.06 gpl, respectively, at the end of the test due