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Upgrading low nickel content laterite ores using selective ...

20/05/2012· Selective reduction and magnetic separation of laterite ore. According to previous research, nickeliferous concentrates with nickel content of 5.1% and a nickel recovery of 98.8% could be produced from LN laterite ore by selective reduction and magnetic separation process when the reduction was conducted at 1250 °C for 60 min (Li et al., 2010). During the calcination, reduction of wustite was …

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Extraction of Nickel from Garnierite Laterite Ore Using ...

15/04/2020· Abstract: 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

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Utilization of limonitic nickel laterite to produce ...

01/02/2019· The limonitic nickel laterite ore is beneficiated by the selective reduction roasting-magnetic separation process. • The mechanism of calcium sulfate and silica in promoting selective reduction of limonitic nickel laterite ore was revealed. • Growth behaviors of ferronickel particles in the reduction roasting process are clarified.

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Recovery of Magnetite from Leached Laterite-residue by ...

laterite ore by a combination process of selective reduction, leaching and magnetic separation. The selective reduction of the laterite ore by CO/CO 2 (30/70 vol%) mixed gas pro-duces in metallic nickel and cobalt, together with change of hematite to magnetite. The nickel will be extracted by leaching from selectively reduced laterite ore without insol-

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Upgrading low nickel content laterite ores using selective ...

20/05/2012· Selective reduction and magnetic separation was conducted on low nickel content laterite ore samples. The results indicate that a high nickel content nickeliferous concentrate with a nickel content of 6.01%, and a nickel recovery of 92.1% could be produced from a blend of LN and SN laterite ore. Over 75% mass ratio of the reduced sample, containing low nickel concentration, could be rejected ...

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Extraction of Nickel from Garnierite Laterite Ore Using ...

15/04/2020· Abstract: 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

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Recovery of Magnetite from Leached Laterite-residue by ...

laterite ore by a combination process of selective reduction, leaching and magnetic separation. The selective reduction of the laterite ore by CO/CO 2 (30/70 vol%) mixed gas pro-duces in metallic nickel and cobalt, together with change of hematite to magnetite. The nickel will be extracted by leaching from selectively reduced laterite ore without insol-uble iron, based on the difference ...

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Efficient enrichment of nickel and iron in laterite nickel ...

01/03/2020· Trans. Nonferrous Met. Soc. China 30(2020) 812−822 Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation Shuai YUAN, Wen-tao ZHOU, Yan-jun LI, Yue-xin HAN College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China Received 2 June 2019; accepted 28 November 2019 Abstract: The process of deep reduction and ...

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Utilization of limonitic nickel laterite to produce ...

01/02/2019· The magnetic separation results of laterite briquettes reduced with variable dosages of calcium sulfate (ranging between 0% and 5%) are shown in Fig. 10. Nickel grade and recovery increased with a gradual addition of CaSO 4. Nickel grade increased from 2.9% to 5.1%, while nickel recovery increased from 88.3% to 98.7%.

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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 ...

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Preparation of magnetic composite adsorbents from laterite ...

01/02/2021· 01/02/2021· Treatment of Laterite nickel ore. 20 g laterite nickel ore was mixed with 100 mL of 5 M sulfuric acid in a 3-necks flask. The leachate and leaching residue was obtained. ii. Preparation of magnetic particles. The sodium sulfite solution was added into the above leachate for reduction of ferric ions to ferrous ions. Al was precipitated and removed by adjusting pH up to 4 using sodium hydroxide ...

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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 ...

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Pre-concentration of nickel in laterite ores using ...

01/09/2019· An interesting aspect of the magnetic separation of ore S (and partially ore I) is the enrichment of Mn in the magnetic concentrate. The amount of Mn was increased about 4 times from 0.4% and 0.2% in ores S and I, respectively, to 1.6% and 0.8% in the magnetic concentrates. The amount of Mn in the corresponding tails is more or less zero. SEM and EDS analyses indicate that Mn is present mainly ...

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Preparation of Ferronickel from Nickel Laterite Ore via ...

19/08/2018· Kim J, Dodbiba G, Tanno H, Okaya K, Matsuo S, Fujita T (2010) Calcination of low-grade laterite for concentration of Ni by magnetic separation. Miner …

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Upgrading low nickel content laterite ores using selective ...

20/05/2012· Selective reduction and magnetic separation was conducted on low nickel content laterite ore samples. The results indicate that a high nickel content nickeliferous concentrate with a nickel content of 6.01%, and a nickel recovery of 92.1% could be produced from a blend of LN and SN laterite ore. Over 75% mass ratio of the reduced sample, containing low nickel concentration, could be rejected ...

Get Quote

Extraction of Nickel from Garnierite Laterite Ore Using ...

15/04/2020· Abstract: 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

Get Quote

Recovery of Magnetite from Leached Laterite-residue by ...

laterite ore by a combination process of selective reduction, leaching and magnetic separation. The selective reduction of the laterite ore by CO/CO 2 (30/70 vol%) mixed gas pro-duces in metallic nickel and cobalt, together with change of hematite to magnetite. The nickel will be extracted by leaching from selectively reduced laterite ore without insol-uble iron, based on the difference ...

Get Quote

Efficient enrichment of nickel and iron in laterite nickel ...

01/03/2020· Trans. Nonferrous Met. Soc. China 30(2020) 812−822 Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation Shuai YUAN, Wen-tao ZHOU, Yan-jun LI, Yue-xin HAN College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China Received 2 June 2019; accepted 28 November 2019 Abstract: The process of deep reduction and ...

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Utilization of limonitic nickel laterite to produce ...

01/02/2019· The magnetic separation results of laterite briquettes reduced with variable dosages of calcium sulfate (ranging between 0% and 5%) are shown in Fig. 10. Nickel grade and recovery increased with a gradual addition of CaSO 4. Nickel grade increased from 2.9% to 5.1%, while nickel recovery increased from 88.3% to 98.7%.

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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 ...

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Preparation of magnetic composite adsorbents from laterite ...

01/02/2021· 01/02/2021· Treatment of Laterite nickel ore. 20 g laterite nickel ore was mixed with 100 mL of 5 M sulfuric acid in a 3-necks flask. The leachate and leaching residue was obtained. ii. Preparation of magnetic particles. The sodium sulfite solution was added into the above leachate for reduction of ferric ions to ferrous ions. Al was precipitated and removed by adjusting pH up to 4 using sodium hydroxide ...

Get Quote

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 ...

Get Quote

Pre-concentration of nickel in laterite ores using ...

01/09/2019· An interesting aspect of the magnetic separation of ore S (and partially ore I) is the enrichment of Mn in the magnetic concentrate. The amount of Mn was increased about 4 times from 0.4% and 0.2% in ores S and I, respectively, to 1.6% and 0.8% in the magnetic concentrates. The amount of Mn in the corresponding tails is more or less zero. SEM and EDS analyses indicate that Mn is present mainly ...

Get Quote

Preparation of Ferronickel from Nickel Laterite Ore via ...

19/08/2018· Kim J, Dodbiba G, Tanno H, Okaya K, Matsuo S, Fujita T (2010) Calcination of low-grade laterite for concentration of Ni by magnetic separation. Miner …

Get Quote
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