Valorization of Solid Residue from the Lateritic Nickel Ore …
The hydrometallurgical process of nickel laterite leavesa residue that still contains critical metals such as iron and nickel. Its utilization can improve overall process efficiency and reduce environmental damage. In this work, the recovery of nickel and iron from nickel residue resulting from the citric acid leach process has been carried out using the selective reduction …
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Nickel Laterite Beneficiation and Potential for Upgrading …
Upgrading nickel laterite ores to increase their nickel content would enable laterites to be treated using simpler technologies and/or reduce the acid requirement and waste generation if the ores are leached. ... Roasting also leads to an increase in its magnetic susceptibility as the dehydrated iron oxides having stronger magnetic properties ...
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An Overview of Nickel Utilization from Laterite Ore
Based on a brief introduction of properties of metallic nickel, it summarizes the applications of nickel, demand of nickel, resources of nickel, and metallurgical processes of laterite ore, in which the rotary kiln-electric furnace …
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Magnetism of laterite nickel ore and magnetic separation …
1. Magnetic properties of laterite nickel ore. Laterite nickel ore is mainly composed of minerals such as nickel oxide and iron oxide, which will be converted into magnetic metal nickel and iron during reduction roasting.
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Calcination of low-grade laterite for concentration of Ni by magnetic …
With the continuous depletion of high-grade nickel ores such as millerite and niccolite, nickeliferous laterites have become the major source for the production of nickel metal. However, only 42% of the world's production of nickel comes from laterites, since the concentration of Ni is relatively low (ca. 2 wt.%). In addition, other metals, such as magnesium, iron and silicon can …
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Fundamentals of Selective Solid-State Reduction and …
selective solid-state reduction followed by magnetic separation. The key issues in the selective reduction of nickel oxides over iron oxides and the growth of newly-formed ferronickel grains (particles) were primarily discussed, and the related fundamentals such as thermodynamics, reduction/sulfidation behaviors of nickel and iron oxides
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Extraction of Nickel from Garnierite Laterite Ore …
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% ...
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Preparing Ferro-Nickel Alloy from Low-Grade …
In this paper, a research on preparing ferro-nickel alloy from low-grade saprolitic laterite nickel ore using metallized reduction-magnetic separation was studied. In the research, the carbothermic reductions of iron oxide and …
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Review on comprehensive utilization of nickel laterite ore
Sulfates have more stable properties and have great potential for development. Chang et al.(Chang ... substances such as fluoride and cyanide generated from the aluminum electrolysis industry for the reduction roasting-magnetic separation of nickel laterite ore. In some studies, biomass carbon is also used as a reductant to reduce nickel ...
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Solid state reduction and magnetic separation of …
The specific conditions employed were a reduction temperature of 1275 °C, a reduction time of 50 min and a carbon-containing coefficient i.e., the ratio of carbon in …
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Upgrade of nickel and iron from low-grade nickel laterite by …
In this study, an improved direct reduction and magnetic separation process was proposed by addition of low-nickel concentrates as nucleating agent combined with low …
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Development of a three-step approach to repurpose nickel-laterite …
Nickel (Ni)-laterite mining is a major industry in the Philippines but is generating large amounts of Ni-laterite mining waste (NMW) that threatens surrounding water bodies due to siltation.To repurpose this waste as magnetic iron (Fe)-based adsorbent, a three-step extraction-reduction-coprecipitation approach was developed, and the adsorption properties of …
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Calcination of low-grade laterite for concentration of Ni by magnetic …
Since, the ore contains both Ni and Fe, the calcination of laterite is effective in altering the crystalline structure of Fe species and therefore its magnetic properties, which in turn enable the ...
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THERMODYNAMIC PROPERTIES OF NICKEL LATERITE ORES …
The Feronikeli complex, located in Glogovc of Kosova, consists of open cast mines with estimated reserves of 24 Mt of laterite ferronickel ore with an average Ni+Co content of 1.25 %, and a large ...
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Calcination of low-grade laterite for concentration of Ni by magnetic …
Energy consumption (kJ/ kg-laterite) Calcination process Magnetic separation 0.0 536.8 4.2 2.1 Estimated cost of processing (USD/kglaterite) 8.55 10 1.09 10 5 2 Estimated profit (USD/kg-laterite) 0.11 0.13 Fe species and therefore its magnetic properties, which in turn enable the selective concentration of nickel by magnetic separation.
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High-Grade Ferronickel Concentrates Prepared from Laterite Nickel …
The production of ferronickel concentrate from low-grade nickel laterite ore containing 1.31% nickel (Ni) was studied by the non-melting reduction magnetic separation process.
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Beneficiation of Low-Grade Laterite Nickel by Calcination …
In this paper, changes, and transformations of laterite nickel because of the calcination process, results of beneficiation method with alone magnetic separation in comparison with a calcination …
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(PDF) Recovery of Magnetite from Leached Laterite-residue by Magnetic
The Vibrating Sample Magnetometer measured the magnetic properties of the ore, as a fundamental of magnetic separation. ... The laterite ore with low nickel content deposits in Indonesia can be ...
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Development of a three-step approach to repurpose nickel-laterite …
For the last 5 years, the Philippines has been a major supplier of nickel (Ni)-laterite ore and this trend is expected to increase in the future as the demand for Ni and other critical metals increase due to the clean energy transition [72] (WBG, 2020). According to the United States Geological Survey (USGS), the Philippines produced 370,000 metric tons of Ni in 2021, …
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The value of mineralogical analyses for base metal …
Primary sources of mined nickel are [1] magmatic sulphide deposits with pentlandite as a main ore mineral; and [2] laterites deposits, where primary minerals are nickeliferous limonite and garnierite.
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High-Grade Ferronickel Concentrates Prepared …
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in …
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Utilization of limonitic nickel laterite to produce ferronickel
Goethite, as the dominate phase within the laterite ore, is often closely associated with silicate minerals, quartz and maghemite, as shown in Fig. 1.In the earthy goethite matrix, Al and Si are detected in Fig. 1 (c) and (d), as well as Fe and Ni. Earthy goethite mineral in the analysed areas contain high Ni in association with high Fe and Si concentrations, which …
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Magnetic separation for recovering iron resources from acid …
We found that ferronickel with a nickel grade of 37.2 wt% could be obtained at a nickel recovery of 95.89% when nickel laterite was reduced at 1200 °C for 25 min, followed by oxidation with CO2 ...
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High-efficiency leaching of valuable metals from saprolite laterite …
Notably, most of valuable metals in nickeliferous laterite ores are the important chemical components of spinel-type ferrites (MFe 2 O 4), namely universal materials, which can be used in the fields of magnetic materials [16], catalysis [17], microwave adsorption [18] and sewage disposal [19] etc. due to the unique structural, magnetic and electrical properties.
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Nickel Laterites—Mineralogical Monitoring for Grade …
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 that drive electric vehicles.
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High-Grade Ferronickel Concentrates Prepared from Laterite Nickel …
1. Introduction. As one of the important strategic metals, nickel is widely used in the stainless steel and new material industries owing to its superior mechanical strength, high chemical stability, good ductility, good catalytic activity, and strong corrosion resistance [1,2,3].The nickel used in the stainless steel industry accounts for approximately 66.2% of the …
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Pilot scale test of producing nickel concentrate from low …
For saprolitic laterite ore, nickel and iron are difficult to concentrate by physical beneficiation due to the low nickel and iron content [15] and isomorphic goethite or serpentine crystalline ...
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Calcination of low-grade laterite for concentration of Ni by magnetic …
In this study, a low-grade nickeliferous laterite ore was first calcinated and then processed by using a wet magnetic separator in order to recover nickel. Since, the ore contains both Ni and Fe, the calcination of laterite is effective in altering the crystalline structure of Fe species and therefore its magnetic properties, which in turn enable the selective concentration …
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Preparation of Nickel–Iron Concentrate from Low …
In this paper, a solid-state metalized reduction and magnetic separation process was proposed to enrich Ni and Fe from a low-grade laterite nickel ore with Ni 0.98% and Fe 6.99%. The different parameters on the …
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(PDF) Hydrometallurgical Processing of Nickel …
PDF | On Mar 11, 2019, Sait Kursunoglu and others published Hydrometallurgical Processing of Nickel Laterites—A Brief Overview On The Use of Solvent Extraction and Nickel/Cobalt Project For The ...
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