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magnetic separation nickel ore

magnetic separation nickel ore

Upgrading low nickel content laterite ores using selective ...

2012-5-20  Highlights Selective reduction and magnetic separation was conducted on low grade nickel laterite ore. High grade nickeliferous concentrate could be produced from these laterite ores. The addition of calcium sulphate promoted nickel concentration. Nickel was mainly concentrated into a γ Fe–Ni phase in the reduced ore. Calcium sulphate improved the growth of γ Fe–Ni phase.

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Extraction of Nickel from Garnierite Laterite Ore Using ...

2020-4-15  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,

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Separation and recovery of iron and nickel from low-grade ...

2020-11-1  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 in the magnetic product, wt.%; M Ni is the mass of the reduction product, g ...

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Ferronickel enrichment by fine particle reduction and ...

2014-10-3  Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T). Composition analysis indicates that the nickel laterite ore contains a total iron content of 22.50wt% and a total nickel content of 1.91wt%. Its mineral composition mainly consists of serpentine, hortonolite, and goethite.

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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. The addition of red mud enhanced the transformation of nickel silicate to a strongly magnetic mineral mainly comprising metallic Ni and that of ...

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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, reduction time of 50 ...

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Utilization of limonitic nickel laterite to produce ...

2019-2-1  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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Preparation of Ferronickel from Nickel Laterite Ore via ...

2018-8-19  Lv X. et al. (2018) Preparation of Ferronickel from Nickel Laterite Ore via Semi-molten Reduction Followed by Magnetic Separation. In: Davis B. et al. (eds) Extraction 2018. The Minerals, Metals Materials Series.

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

2020-3-3  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

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Chloridization and Reduction Roasting of High-Magnesium ...

2015-10-15  The chloridization and reduction roasting of high-magnesium, low-nickel oxide ore containing 0.82 pct Ni and 31.49 pct MgO were investigated in this study. Mineralogical investigation indicated that 84.6 pct of nickel was associated with silicates, and nickel was well distributed in mineral in the form of isomorphism. A series of chloridization tests with different added proportions of sodium ...

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Nickel Ore Processing Magnetic Separation - Aquacristal

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. Read ...

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Ferronickel enrichment by fine particle reduction and ...

Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as ...

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Ferronickel enrichment by fine particle reduction and ...

2014-10-3  Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700–1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T). Composition analysis ...

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Deep reduction/magnetic separation of laterite for ...

The process of one-step reduction roasting and magnetic separation was adopted to prepare ferro-nickel alloy from low-grade nickel laterite ore (w(Ni)=1.52%, w(Fe)=14.08%).

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Ferronickel enrichment by fine particle reduction and ...

Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700-1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T).

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SEPARATION OF NICKEL FROM ASBESTOS ORE - JOHNS

The magnetic separation concentrated 30 percent of the nickel originally present into a nickel-enriched fraction comprising 17 percent by weight of the original sample. The nickel-enriched fraction is then passed through a centrifugal impact mill manufactured by Entoleter, Inc. to subdivide or open the residual fiber bundles, making them more ...

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

magnetic separator. The ore was treated through selective reduction followed by sulphuric acid leaching to 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.

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Experimental Study on Recovery of Nickel from Nickel ...

It is known that to extract nickel from nickel-bearing laterite ore is not an easy job. By reducing roast-magnetic separation, an effective result is achieved in this research in dealing with nickel-bearing laterite ore due to its simple technology process and the high nickel recovery. Nickel-bearing laterite studied in this research is mainly characterized by fine disseminated grain size and ...

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NICKEL AND COBALT ORES: FLOTATION

2016-6-7  enriching the nickel content of the ore. This is com-monly carried out by magnetic separation, Sotation, or a combinationof both after the ore is comminuted to below 200 m in size. The enrichment depends upon the degree of rejection of the other sulRde and non-sulRde gangue. The maximum grade of nickel achieved by Sotation is around 28% Ni.

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ADVANCES IN MAGNETIC SEPARATION OF ORES

2016-12-4  magnetic separation. Dry Magnetic Separation of Iron Ore: There are many inherent advantages in processes that utilize dry magnetic separation to beneficiate iron ore. Wet concentration of magnetite ore, in comparison, re- quires 500 to 1000 gal of water per ton of concen- trate produced. This means extensive use of water

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(PDF) Study on selective reduction and magnetic separation ...

The reduced ore was 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 ...

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STUDY ON SELECTIVE REDUCTION AND MAGNETIC

Keywords: nickel laterite ore, selective reduction roasting, magnetic separation Q LI et al XXV INTERNATIONAL MINERAL PROCESSING CONGRESS (IMPC) 2010 PROCEEDINGS / BRISBANE, QLD, AUSTRALIA / 6 ...

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Ferronickel enrichment by fine particle reduction and ...

Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as ...

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Separation and Recovery of Iron and Nickel from Low-Grade ...

2018-10-1  The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation. The results indicated that both iron metallization extent and nickel metallization extent showed obvious linear correlation. In addition, rational roasting temperature and prolonged grinding time could enhance the overall ...

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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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Upgrading low nickel content laterite ores using selective ...

The self-reduction, fine grinding, and magnetic separation of nickel laterite ore in the presence of three types of additive were examined. Nickel laterite ore with 7.88 wt% coal, 12 wt% calcium ...

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Ferronickel enrichment by fine particle reduction and ...

Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700-1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T).

Get Price

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

magnetic separator. The ore was treated through selective reduction followed by sulphuric acid leaching to 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.

Get Price

ADVANCES IN MAGNETIC SEPARATION OF ORES

2016-12-4  magnetic separation. Dry Magnetic Separation of Iron Ore: There are many inherent advantages in processes that utilize dry magnetic separation to beneficiate iron ore. Wet concentration of magnetite ore, in comparison, re- quires 500 to 1000 gal of water per ton of concen- trate produced. This means extensive use of water

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Additives in Selective Reduction of Lateritic Nickel Ores ...

2021-7-7  In this work, the selective reduction of lateritic nickel ore was carried out using sodium sulfate, sodium carbonate, and sodium chloride as additives. The 5 wt% of anthracite coal, which contains 60.35% of fixed carbon and 1.9% of sulfur, was used as a reductant. All raw materials were mixed homogenously prior to the pelletization process into 10–15 mm of diameter. The reduction process

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