Process for separating limonite and saprolite
A method for separating nickel containing lateritic ore into limonite and saprolite fractions, the method including the steps of : (a) providing said lateritic ore in particulate form; (b) forming a slurry of said particulate ore; (c) subjecting the ore slurry to a size separation procedure to separate the limonite and saprolite fractions on a selected threshold particle size basis …
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Research Detail | Pages
For instance, in the depth around 10 -15 meters, limonite can be mined which have 0,8 – 1,5% nickel content but deeper in around 15 – 20 meters, saprolite can be found which have 1.5 – 3% nickel content. Saprolite also has higher content of …
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Nickel industry
The two main processing methods for laterite ores are smelting and High-Pressure Acid Leaching (HPAL). Smelting is used primarily on saprolite ores to obtain an iron-nickel …
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Studies of carbon percentage variation and mixing Saprolite …
The optimum carbon percentage of saprolite and limonite is the concerned purpose for this research. The ratio of saprolite and limonite (solid: solid) are 1:4 and gave heat …
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Laterite Ores
Of the three processing options for treating laterite ores: 1. smelting for the lower horizon saprolite ore, 2. ammonia; and 3. acid leach for the upper horizon limonite ore, …
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Leaching Behaviour of Nickel from Indonesian Laterite …
the ore type (i.e. limonite or saprolite ore). The leaching test using 1M citric acid resulted in the highest nickel extraction percentage of 94% for serpentinic saprolite ore after 21 days of ...
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SEDIMENTATION BEHAVIOUR OF LIMONITE …
blended limonite-saprolite ore slurries is modified in gravity thickeners using ionic polymers. Based on 2 4 factorial design, ionic type, charge density, molecular weight, and dosage of polymers were varied in bench-scale sedimentation tests.
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Laterite Ores
Of the three processing options for treating laterite ores: 1. smelting for the lower horizon saprolite ore, 2. ammonia; and 3. acid leach for the upper horizon limonite ore, smelting currently accounts for about 80 per cent of nickel production.
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Improved beneficiation of nickel and iron from a low-grade …
To improve beneficiation of nickel and iron from low-grade saprolite laterite with 1.29 wt.%Ni and 16.31 wt.%Fe, co-reduction with limonitic laterite ore and basicity optimization …
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Major Mines & Projects | Kolosori Mine
Mining of saprolite nickel ore commenced on 1 October 2023. But during June-July 2024, the operation has been affected by a combination of factors, which together impacted the mining schedule at the Kolosori Nickel operation. These included: • Reduced machine availability of mining equipment; • The lack of articulated dump trucks; and
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Optimisation of Saprolite Ore Processing for Nickel Extraction
Laterite ores occur as surface deposits and are traditionally separated into two main types: limonites (lower nickel, high iron) and saprolites (higher nickel, low iron). Limonites …
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Research Detail | Pages
For instance, in the depth around 10 -15 meters, limonite can be mined which have 0,8 – 1,5% nickel content but deeper in around 15 – 20 meters, saprolite can be found which …
WhatsApp: +86 18221755073
Improved beneficiation of nickel and iron from a low-grade saprolite …
To improve beneficiation of nickel and iron from low-grade saprolite laterite with 1.29 wt.%Ni and 16.31 wt.%Fe, co-reduction with limonitic laterite ore and basicity optimization were adopted as strengthening measures in this paper …
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Optimisation of Saprolite Ore Processing for Nickel …
processing steps, mining companies can identify optimal operating conditions for each step, leading to increased efficiency and reduced costs. This enables mining companies to determine the most cost-effective and efficient extraction method for the ore body.
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Our Business — Nickel Asia Corporation
Mining. We produce two types of nickel ore, namely saprolite ore and limonite ore. Our saprolite ore comes in two types: high-grade and mid-grade, while our limonite ore are high-iron and low-grade. Most of our high-grade saprolite ore …
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(PDF) Atmospheric Leaching of Nickel Laterites …
Although the acid requirement for the saprolite ore alone can be 30–50 kg/kg nickel depending on the magnesium to nickel ratio (Curlook, 2004), when used in concert with HPAL of the limonite ore at a low saprolite to limonite ratio of …
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Major Mines & Projects | Hinatuan Mine
The Taganaan (Hinatuan) mine produces direct shipping saprolite ore and limonite ore. Based on the revised life-of-mine plan, the mine life of the Taganaan mine is expected to last until 2026. Recent market price improvements allowed HMC to dispose of lower-grade materials that were previously considered non-marketable at a profit, effectively ...
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Philippine nickel mine features 'green' innovations
Traditionally saprolite is processed by pyrometallurgy or smelting, while limonite is treated by hydrometallurgy, a process that requires acid.
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Studies of carbon percentage variation and mixing Saprolite-Limonite …
XRD of limonite (red) and saprolite (blue) ore (symbol: r = goethite, = lizardite, and | = quartz). (For interpretation of the references to colour in this figure legend, the reader is referred to ...
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Nickel industry
Laterite ores occur as surface deposits and are traditionally separated into two main types: limonites (lower nickel, high iron) and saprolites (higher nickel, low iron). Limonites typically have cobalt as an additional value component, while saprolite is …
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Studies of carbon percentage variation and mixing Saprolite-Limonite …
The optimum carbon percentage of saprolite and limonite is the concerned purpose for this research. The ratio of saprolite and limonite (solid: solid) are 1:4 and gave heat treatment at 1150 °C with 1 h holding time and magnetic separation for getting to know the optimum nickel grade and recovery.
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Major Mines & Projects | Taganito Mine
The Taganito mine, one of the NAC Group's two largest mines, produces direct shipping saprolite ore and limonite ore. This mine is a part of the global supply chain for electric vehicle battery components. It supplies lowgrade ore to Taganito HPAL Nickel Corporation (THPAL), one of the only two Philippines' nickel processing plants.
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Nickel industry
The two main processing methods for laterite ores are smelting and High-Pressure Acid Leaching (HPAL). Smelting is used primarily on saprolite ores to obtain an iron-nickel alloy (ferronickel – FeNi, Nickel Pig Iron – NPI) while HPAL is used primarily to process limonite or for higher-purity end products.
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The Thunder from Down Under
The Caron hydrometallurgical process can also be used for limonitic ores or a mixture of limonite and saprolite. However, there are some disadvantages including lower nickel and cobalt recovery and energy-intensive pyrometallurgical steps at the front end of the processing cycle. ... HPAL plants require sophisticated equipment and expertise to ...
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Open Access proceedings Journal of Physics: Conference …
3.3. Comparison of metallization of limonite, saprolite and mix . For saprolite ore (ore mixed with coal 13%) the amount of reduced nickel metal increases after reduction is carried out for more than 30 minutes. From the temperature of 700°C, the nickel reduced was
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A Study on Classification of Limonite and Saprolite from …
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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Thermal Upgrading Effect: Saprolite versus Limonite
This method is an alternative for processing limonite and saprolite nickel laterite ores into nickel concentrates with nickel content above 5%. ... PT Mandiri Mineral Perkasa is a contractor ...
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Major Mines & Projects | Rio Tuba Mine
The Rio Tuba mine produces direct shipping saprolite ore and limonite ore. Rio Tuba Nickel Mining Corporation (RTNMC) exports saprolite and limonite ore and supplies limonite ore and various non-mining services to the adjacent Coral Bay HPAL plant operated by Coral Bay Nickel Corporation (CBNC).
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Processing of Nickel Laterite Ores on the Rise
Limonite, which accounts for nearly double the amount of saprolite available globally, is more amenable to processing via hydometallurgical techniques, while saprolites are more amenable to processing via pyrometallurgy.¹
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Our Business — Nickel Asia Corporation
Mining. We produce two types of nickel ore, namely saprolite ore and limonite ore. Our saprolite ore comes in two types: high-grade and mid-grade, while our limonite ore are high-iron and low-grade. Most of our high-grade saprolite ore are sold to Pacific Metals Co., Ltd. (PAMCO), who use the material as feed for its ferronickel smelter.
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