magnetic separation of nickel

Research on magnetic separation for complex nickel deep ...
2017-2-23 · This study investigated the deep removal of complex nickel from simulated wastewater using magnetic separation and magnetic seed recycling. Nano-magnetite (Fe 3 O 4) was used as the magnetic seed.The flocculant applied was N,N-bis-(dithiocarboxy) ethanediamine (EDTC), a highly efficient heavy metal chelating agent included in dithiocarbamate (DTC).
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Magnetic separation of iron precipitate from nickel ...
2015-7-1 · Efficient magnetic separation offseted the poor settleability and filterability of the precipitate. After magnetic separation of iron residue, the nickel solution was qualified and the dried iron residue contained more than 52% Fe and less than 0.6% Ni, indicating a promising alternative process for treatment of bulky residues of iron precipitate.
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Pretreatment study on chloridizing segregation and ...
2010-5-1 · The chloridizing segregation and magnetic separation of low-grade nickel laterites from Yunnan province of China was investigated. The nickel laterites were characterized by microscopic investigations, using X-ray diffractometry (XRD) and energy dispersive spectrometry (EDS) techniques.
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Efficient enrichment of nickel and iron in laterite nickel ...
2020-3-1 · The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the conditions of reduction temperature of 1275 °C,
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Experimental Study on Reduction-Magnetic Separation ...
The reduction and magnetic separation of low-grade nickel laterite was studied at varing temperatures between 1325–1400°C and a weak magnetic field of 100 mT in order to acquire high grade concentrations. The influence of reduction temperature, percentage of CaO, and atomic ratio of C/O (carbon/oxygen) were investigated.
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Utilization of limonitic nickel laterite to produce ...
2019-2-1 · 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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Minerals | Free Full-Text | Extraction of Nickel from ...
2020-4-15 · 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,
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Extraction of Nickel from Magnesia–Nickel Silicate Ore ...
2021-4-29 · Abstract In this study, magnesia–nickel silicate ore was investigated, which contained 0.83% Ni and antigorite, chlorite, magnetite (Fe3O4), quartz, and mica as the main minerals. Chloride roasting and magnetic separation were used to treat the ore.
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Recovery of Magnetite from Leached Laterite-residue by ...
recover nickel while iron remained in residual solid. The Vibrating Sample Magnetometer measured the magnetic properties of the ore, as a fundamental of magnetic separation. Magnetic separation was carried out using a Davis Tube Tester. The effect of pretreatments on the magnetization and magnetic separation were investigated.
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STUDY ON SELECTIVE REDUCTION AND MAGNETIC
then upgraded by magnetic separation, 75 per cent of the total mass being rejected as tailings, and a high grade nickel concentrate, assaying 5.1 per cent Ni and 82.66 per cent Fe total
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Upgrade of nickel and iron from low-grade nickel laterite ...
2021-8-23 · Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the mechanisms on the
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Calcination of low-grade laterite for concentration of Ni ...
The main finding of this work was that magnetic separation is effective in recovering 48% of nickel from laterite, increasing the Ni grade in the recovered product from 1.5% to 2.9%, when prior to ...
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Efficient enrichment of nickel and iron in laterite nickel ...
2020-3-16 · Abstract: The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the conditions of
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Metals | Free Full-Text | Production of Ferronickel ...
2019-12-12 · 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. The sodium chloride was used as additive and
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Minerals | Free Full-Text | Extraction of Nickel from ...
2020-4-15 · 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,
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Extraction of Nickel from Magnesia–Nickel Silicate Ore ...
2021-4-29 · Abstract In this study, magnesia–nickel silicate ore was investigated, which contained 0.83% Ni and antigorite, chlorite, magnetite (Fe3O4), quartz, and mica as the main minerals. Chloride roasting and magnetic separation were used to treat the ore.
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Recovery of Magnetite from Leached Laterite-residue by ...
recover nickel while iron remained in residual solid. The Vibrating Sample Magnetometer measured the magnetic properties of the ore, as a fundamental of magnetic separation. Magnetic separation was carried out using a Davis Tube Tester. The effect of pretreatments on the magnetization and magnetic separation were investigated.
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Relationship between process mineralogical
2021-10-22 · For the limonite in laterite nickel mine, the nickel bearing magnetite concentrate with nickel grade of 1.98% and recovery rate of 88.42% can be obtained by reduction roasting magnetic separation process. For the serpentine in laterite nickel mine, the cobalt ...
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Synthesis and magnetic properties of nickel three ...
2020-12-21 · magnetic hysteresis loops at 4 and 300 K showed a typical feature of the theory of low temperature spin wave. The high-temperature magnetic property of the superlattices showed that the Curie temperature was lower than the value of bulk nickel, following the ﬁnite-size scaling relation. 5. Acknowledgments: This work was supported by the National
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Research on magnetic separation for complex nickel deep ...
This study investigated the deep removal of complex nickel from simulated wastewater using magnetic separation and magnetic seed recycling. Nano-magnetite (Fe3O4) was used as the magnetic seed. The flocculant applied was N,N-bis-(dithiocarboxy) ethanediamine (EDTC), a highly efficient heavy metal chelating agent included in dithiocarbamate (DTC).
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magnetic separation of nickel - haus-kuhbandner.de
nickel ore processing magnetic separation. Separation and recovery of iron and nickel from low-grade. 1/11/2020 The magnetic separation efficiency of nickel from the laterite ore was evaluated using the recovery ratio of nickel R ni using the formula: (1) R Ni = m Ni × β Ni M Ni × γ Ni × 100 % where m Ni is the mass of the magnetic product, g; β Ni is the nickel content inM.
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Separation of Copper-Nickel by Flotation and Magnetic
2018-11-23 · Distribution of the precious and platinum-group metals in the matte separation process was determined by assaying the copper fraction, the nickel fraction minus the magnetic iron-nickel alloy, and the alloy. The magnetics were assayed separately to determine if the precious metals were concentrating in the iron- nickel alloy (table 7).
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Utilization of nickel slag using selective reduction ...
2013-12-3 · magnetic separation. 3 Results and discussion 3.1 Effect of basicity on selective reduction−magnetic separation The effects of basicity (mass ratio of CaO to SiO2 in the mixture of nickel slag, additive and calcite) on the metal grade and the metal recovery from the nickel slag
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Beneficiation of Low-Grade Laterite Nickel by Calcination ...
2022-1-2 · nickel by calcination-magnetic separation method was studied. In order to determine the components and elements of the sample, to recognize the main and minor minerals and their bond, and phase transformation caused by thermal treatment, Chemical analysis (XRF and ICP), microscopic studies and XRD analysis were done, respectively. ...
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Efficient enrichment of nickel and iron in laterite nickel ...
2020-3-16 · Abstract: The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron concentrates with nickel grade of 6.96%, nickel recovery of 94.06%, iron grade of 34.74%, and iron recovery of 80.44% could be obtained after magnetic separation under the conditions of
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Carboxylate Coated Nickel Ferrite Nanoparticles for High ...
2018-12-10 · Carboxylate Coated Nickel Ferrite Nanoparticles for High-gradient Magnetic Separation T.M. Trad1, R. Alvarez1, A. Apblett2 and K.S. Martirosyan3 1Department of Chemistry and Environmental Sciences, University of Texas at Brownsville, Brownsville, TX, USA, 78520, [email protected] 2Department of Chemistry, Oklahoma State University, Stillwater, OK,
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Recovery of Magnetite from Leached Laterite-residue by ...
recover nickel while iron remained in residual solid. The Vibrating Sample Magnetometer measured the magnetic properties of the ore, as a fundamental of magnetic separation. Magnetic separation was carried out using a Davis Tube Tester. The effect of pretreatments on the magnetization and magnetic separation were investigated.
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Magnetic Separation of Metal Ions | The Journal of ...
2003-12-2 · The magnetic separation was investigated for Co2+ (9500 × 10-6 cm3 mol-1) and Fe3+ (14600 × 10-6 cm3 mol-1) ions and for Cr3+ (6200 × 10-6 cm3 mol-1) and Al3+ (−2 × 10-6 cm3 mol-1) ions. The metal ion solutions were spotted on a silica gel support, and exposed to a magnetic field of 410 kOe2 cm-1 intensity × gradient. The Co2+ ions move farther toward the
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Is Nickel Magnetic? - Techiescientist
2022-2-9 · Nickel (Ni) is ferromagnetic in nature, because of the parallel alignment of its 2 unpaired electrons or ‘spins’ in presence of an external magnetic field. Nickel holds its magnetic property even in absence of any magnetic field, which gives permanent magnetization to it. Nickel exists as a silvery-white lustrous metal with a tinge of gold.
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