oxide ore leaching nickel
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oxide ore leaching nickel

The leaching behaviour of nickel oxides in acid and in ...

1982-3-1 · The dissolution rate of nickel(II) oxide in both solvents was influenced greatly by the heat treatment given to the oxide prior to leaching and, under the conditions studied, was found to be limited by the rate of the surface chemical reactions. The rates of leaching of nickel(II) and nickel(III) hydroxides on the other hand were very fast.

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Acid leaching of nickeliferous oxide ores with

Nickel values contained in oxidic ores are recovered by leaching with sulfuric acid. The ore is slurried with water, preheated to a leaching temperature between about 230° C and about 300° C and the preheated slurry is fed to one or more vigorously agitated autoclaves, operating continuously in series.

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Kinetic study on the leaching of spent nickel oxide ...

2004-10-1 · Leaching of spent nickel oxide catalyst with sulfuric acid was studied. Extraction efficiency of about 94% of the NiO present in the spent catalyst was achieved under the following conditions: particle size −200+270 mesh, temperature 85 °C, reaction time 150 min, sulfuric acid concentration 50% and solid/liquid ratio 1:20 g/ml.

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Hydrometallurgical process of nickel oxide ore -

What is claimed is: 1. A hydrometallurgical process for recovering nickel and cobalt from nickel oxide ores, comprising: (1) a leaching stage which stirs the slurried ore in the presence of sulfuric acid at 220 to 280° C. to produce leached slurry, (2) a solid-liquid separation stage which washes the leached slurry in multi-stages to produce pregnant liquor and leached residue, the pregnant ...

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Cations stress on low-grade nickel sulfide ore oxidation leaching

2020-12-23 · The effects of cations stress of magnesium ion and sodium ion on the low-grade nickel sulfide ore oxidative leaching in simulated sulfuric acid solutions were investigated. This study was performed in two courses, including the effect of the cations on the valuable metals leaching efficiencies of the nickel ore and its influences on the electrochemical oxidation behavior of the nickel ore. The ...

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Atmospheric pressure leaching of nickel from a low-grade ...

2018-6-27 · Keywords: nickel recovery, laterite ore, leaching, calcination, kinetics 1. Introduction Nickel is an important metal used for a wide variety of applications. The world’s various deposits of nickel are in the forms of sulfide and oxide (laterites) ores. Currently, the majority of nickel is obtained

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Efficient Synchronous Extraction of Nickel, Copper,

2020-6-18 · Synchronous extraction of nickel and copper from a mixed oxide–sulfide nickel ore in a low–temperature roasting system. Journal of cleaner production 177 ,

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Selective Nickel Leaching from Nickel and Cobalt Mixed ...

Keywords: mixed sulfide, sulfuric acid, iron(III) sulfate, nickel selective leaching, NiS 2 1. Introduction Nickel matte and mixed sulfide (MS, i.e., a mixture of nickel and cobalt sulfide) are made by rough refining from nickel sulfide ore or nickel oxide ore. These intermediate products are used as raw materials for commercial nickel ...

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(PDF) The leaching of lateritic nickel ores in ...

No direct leaching tests were reported. Strong (1978) reported a detailed study of the behaviour of various types of lateritic nickel ore in hydrochloric acid leaching systems. The samples were ...

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Nickel Heap Leaching - Brazilian Nickel PLC

Heap Leaching is an ancient process; leaching metals out of ore goes back nearly 500 years. Mines in Hungary recycled copper-bearing solutions through waste heaps in the 1550s, Spanish miners percolated acid solutions through large heaps of oxide copper ore

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Cations stress on low-grade nickel sulfide ore oxidation leaching

The effects of cations stress of magnesium ion and sodium ion on the low-grade nickel sulfide ore oxidative leaching in simulated sulfuric acid solutions were investigated. This study was performed in two courses, including the effect of the cations on the valuable metals leaching efficiencies of the nickel ore and its influences on the electrochemical oxidation behavior of the nickel ore. The ...

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Atmospheric pressure leaching of nickel from a low-grade ...

2018-6-27 · Keywords: nickel recovery, laterite ore, leaching, calcination, kinetics 1. Introduction Nickel is an important metal used for a wide variety of applications. The world’s various deposits of nickel are in the forms of sulfide and oxide (laterites) ores. Currently, the majority of nickel is obtained

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Selective Nickel Leaching from Nickel and Cobalt Mixed ...

Keywords: mixed sulfide, sulfuric acid, iron(III) sulfate, nickel selective leaching, NiS 2 1. Introduction Nickel matte and mixed sulfide (MS, i.e., a mixture of nickel and cobalt sulfide) are made by rough refining from nickel sulfide ore or nickel oxide ore. These intermediate products are used as raw materials for commercial nickel ...

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Acid leaching of nickeliferous oxide ores with

Nickel values contained in oxidic ores are recovered by leaching with sulfuric acid. The ore is slurried with water, preheated to a leaching temperature between about 230° C and about 300° C and the preheated slurry is fed to one or more vigorously agitated autoclaves, operating continuously in series.

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MURDOCH RESEARCH REPOSITORY

2011-5-12 · ORE MINERALOGY AND CHEMISTRY 3. PROVEN PROCESSING OPTIONS 4. HEAP LEACHING 5. ATMOSPHERIC LEACHING 6. NEW TECHNOLOGIES 7. CONCLUSIONS 8. REFERENCES 2 2 3 4 18 21 24 33 33 . ABSTRACT A review has been completed of current and proposed processing technologies for nickel laterite ores. ... Bioleaching of oxide ores is a concept

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Dissolution kinetics of nickel laterite ore using ...

Goethite or hydrated iron oxide is the main iron bearing phase or host that contains most of the nickel oxide in the raw lateritic ore. Chemical Analysis of the Ore The chemical analysis of raw lateritic ore has revealed the presence of 0.97% Ni along with some other different metals, as confirmed by the XRF study of nickel ore ( Table 1 ).

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HEAP LEACHING SIMULATION OF NICKEL OXIDE

in the present work, the possibility of applying heap-leaching in order to extract nickel and cobalt from poor nickel-oxide ores was examined. HEAP LEACHING WAS SIMULATED BY USING COLUMN LEACHING. ORE HEIGHT IN THE COLUMNS, ACID CONCENTRATION IN LEACH SOLUTION, SOLUTION VOLUME TO ORE WEIGHT RATIO AND GRAIN SIZEOF THE ORE, WERE THE

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(PDF) A STUDY OF LEACHING OF COPPER OXIDE ORE

Mexican copper ore is a mixed ore containing mainly copper oxide and some copper sulfide that responds well to flotation. The joint techniques of flotation and leaching were studied.

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US6312500B1 - Heap leaching of nickel containing ore ...

A process is provided for heap leaching ore to recover nickel. The process is particularly effective for ores that have a tangible clay component (i.e., greater than about 10% by weight). The process includes sizing the ore (where necessary), forming pellets by contacting ore with a lixiviant and agglomerating. The pellets are formed into a heap and leached with sulfuric acid to extract the ...

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nickel Ore - SlideShare

2016-1-28 · NICKEL LATERITE PROCESSING Atmospheric leaching F E E D Oxide ore (but, potentially, any ore type, including low grade hydrous silicate) P R O C E E S S Heat and leach H2SO4 Ore preparation Acid plant or excess from HPAL S Energy Wash/neutralize SX-EW or precipitate P R O D U C T Ni (Co) hydroxide ~80-90% recovery Ravensthorpe, Gag Island ...

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Atmospheric pressure leaching of nickel from a low-grade ...

2018-6-27 · Keywords: nickel recovery, laterite ore, leaching, calcination, kinetics 1. Introduction Nickel is an important metal used for a wide variety of applications. The world’s various deposits of nickel are in the forms of sulfide and oxide (laterites) ores. Currently, the majority of nickel is obtained

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Extraction of Nickel from Garnierite Laterite Ore Using ...

2020-4-15 · enrichment, nickel ore is more silicon, more magnesium, lesser iron, higher nickel, and lower cobalt, which is called magnesium garnierite laterite ore. Both ores, relative to nickel sulfide deposits, are called nickel oxide ores [4–6]. Laterite nickel ore is the most abundant nickel ore resource in the world. The nickel in laterite

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MURDOCH RESEARCH REPOSITORY

2011-5-12 · ORE MINERALOGY AND CHEMISTRY 3. PROVEN PROCESSING OPTIONS 4. HEAP LEACHING 5. ATMOSPHERIC LEACHING 6. NEW TECHNOLOGIES 7. CONCLUSIONS 8. REFERENCES 2 2 3 4 18 21 24 33 33 . ABSTRACT A review has been completed of current and proposed processing technologies for nickel laterite ores. ... Bioleaching of oxide ores is a concept

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Mineral leaching of non‐sulphide nickel ores using ...

Laboratory studies were conducted on microbial leaching of non‐sulphide nickel ores not amenable to conventional mineral processing operations. The results showed that extensive low‐grade laterite domestic sources are generally amenable to bioleaching when micro‐organisms were cultivated in the presence of the ore.

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Pressure Acid Leaching of Nickel Laterites: A Review ...

2018-6-10 · Abstract. A review of the literature over the past 30 years on the processing of nickel laterites by high temperature acid leaching has been carried out to provide a better understanding of the mineralogy, leaching process chemistry and effect of operating conditions on nickel recovery, residue properties and scaling.

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Atmospheric pressure leaching application for the

2013-8-20 · Low-grade nickel ore Mineralogical analysis showed that the low-grade nickel ore contained lizardite 1T, which is a serpentine nickel-bearing mineral at a grade of 0.1% Ni (Table II). The dominant mineral in the ore was found to be iron-bearing enstatite and other gangue minerals: biotite, diopside, forsterite, anorthite, and quartz.

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From Roasting Of Nickel Ore To Leaching

Study On The Beneficiation Process Of A Nickel Oxide Ore. For a nickel oxide ore, 1 ore sample was treated by sulfuric acid leaching and 2 ore sample was treated by ammonium sulfate roasting-sulfuric acid leaching through exploring experiments.the leaching rate of 92.04 with l nickel oxide ore and the leaching rate of 72.36 with 2 nickel oxide ore were obtained by conducting the conditional ...

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Precipitation of Nickel Hydroxide from Simulated and ...

2017-1-22 · Nickel laterite ore is one of the main primary sources of nickel which contributes to about 70% of world land-based nickel resources [Dalvi, D.A. et. al. 2004]. In term of processing route, the production of nickel from lateritic ore has been done either through pyrometallurgical or hydrometallurgical routes as well as through a combination of

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Recovery prediction of copper oxide ore column leaching

2017-4-5 · nickel and zinc. In this method, piles of crushed ore are irrigated with various chemical solutions to leach and extract valuable minerals [1]. The effects of metallurgical parameters (such as particle size, porosity and permeability of ore, temperature, column height, solvent concentration, leaching time, solution flow rate, and

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Mining and Extraction: Oxide Ores - processes for ...

Most of the copper ores mined today are oxide or sulfide ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. Pyroprocessing Sulfide Ores Provides Acid for Leaching

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