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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 …
The reduction of nickel laterite was carried out at 1050-1150 °C to prevent the formation of semi-fused nickel ore, which causes the kiln-ringing problem in the rotary kiln furnace [12].
In this research, efficient iron enrichment was innovatively proposed through "mineral phase transformation - magnetic separation" for the acid-leaching tailings of laterite nickel ore. The process utilizes carbon monoxide (CO) as the reducing agent, and after reduction, the weakly magnetic mineral (Fe 2 O 3 ) is transformed into the ...
Magnetic separation technology is a physical separation method that uses the differences in magnetism between matter to separate them from each other by different motion behaviors in a non-uniform magnetic field. It is …
Magnetic separation is a physical separation process that relies on the different magnetic properties of components in a mixture. By applying a magnetic field, magnetic particles are separated from non-magnetic ones based on their magnetic susceptibility and volume, leading to efficient separation of substances.
It is shown that nickel concentrate containing 3.13 % Ni and 59.20 % Fe was achieved at recoveries of 84.36 % and 71.51 % for Ni and Fe, respectively under the following conditions: reducing at (1120±40) °C for 120 min, C/P being 1.0, wet grinding of reduced pellets up to 70%–87% passing 0.074 mm and a magnetic field intensity of 238.8 kA/m ...
DOI: 10.1016/j.mineng.2023.108194 Corpus ID: 259620999; Extraction of ferronickel concentrate from laterite nickel ore by reduction roasting-magnetic separation using spent cathode carbon
This concentrate is a good quality burden for EAF. ... reduction and magnetic separation of nickel laterite ore containing 0.97% nickel to produce a high grade nickel concentrate. With regards to ...
DOVE High Intensity Magnetic Roller Separator is a highly efficient and economical magnetic separator, designed for rapid and precise separation of dry fine and coarse granular mixture of magnetic from non magnetic and weakly magnetic materials. ... Copper – Nickel ore pre concentration, Manganese and Glass sand beneficiation, Andalusite and ...
The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO2) to adjust the melting degree of the briquette during reduction roasting. Thermodynamic analysis …
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Nevertheless, when reduction roasting–magnetic separation is used to treat laterite nickel ore with low nickel content, increasing the dosage by approximately 8–20% inevitably reduces equipment life and increases cost (Liu et al.,2021). Therefore, improving the grades and recoveries of iron and nickel is of major significance.
Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen …
Nickel, a valued metal, mainly exists as nickel oxide in laterite nickel ore. Furthermore, a large part of the laterite nickel ore is low-grade saprolitic ore. In this paper, a research on preparing ferro-nickel alloy from …
nickel ore have been reported [4–9, 11, 13, 19–24]. Throughout this process, much smaller ferronickel alloy par-ticles are formed at the experimental condition in this ... metallization extent of nickel and iron on the efficiency of magnetic separation was also studied. In addition, the effect
Analysis of Low-Grade Laterite Ore and Magnetic Separation Tailings. The chemical analysis of low-grade laterite ore and magnetic separation tailings are shown in Tables 1 and 2. The nickel was reduced from 0.82% of the original ore to 0.3% of the tailings, and the iron content was reduced from 9.7 to 5.0% by magnetic separation.
This work presents a practical method for the highly efficient recovery and utilization of iron and nickel from low-grade laterite nickel ore, contributing to the development of strategies for the sustainable extraction and utilization of nickel resources. ... high-grade ferronickel concentrate; laterite nickel ore; magnetic separation. Grants ...
The reduction of the prepared nickel laterite ore by H2 was carried out in a fluidised-bed reactor with provisions for temperature and agitation control, and the magnetic separation of the reduced ...
Utilization of plentiful fine-disseminated iron oxide ores resources attracted increasing attention in these years due to the depletion of easy-dressing iron ore reserves. In this paper, an improved Fe recovery method from the refractory fine-grained iron ores was proposed, and iron can be stepwise recovered by microwave-assisted reduction roasting with the …
In this research, efficient iron enrichment was innovatively proposed through "mineral phase transformation - magnetic separation" for the acid-leaching tailings of laterite …
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 ...
Some type of Magnetic Separator is always advisable and should be a standard piece of equipment in every mill. ... hand magnet. It is an alloy of aluminum, nickel, and cobalt, very high in retentivity, and many times stronger than the ordinary horseshoe magnet. ... Its magnetic efficiency is well above 99%. The separator will efficiently handle ...
Improve Mineral Processing Efficiency By Magnetic Separator. . Magnetic separator is the basic tool used by mineral processing plants to separate ferrous …
By adding a flux and using a direct reduction roasting and magnetic separation method,iron and nickel enrichment from refractory low-grade nickel laterite ore,in which nickel is mainly contained in silicates,was studied.Better technical indicators were obtained by adding the flux.The optimal conditions are coal as the reducer with a dosage of 15%,KD-2 as the flux with a …
The equipment commonly used in magnetic separation includes dry magnetic separators and wet magnetic separators. Dry magnetic separators are suitable for processing dry or low-humidity tin ore materials, while wet magnetic separators are suitable for processing tin ore materials with high water content. The magnetic field strength and magnetic ...
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 ...
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 coal as a reductant. The effects of roasting temperature, roasting duration, reductant dosage, additive dosage, and grinding time on the …
Compact Design: Compact and space-efficient, the Magnetic Roll Separator seamlessly integrates into existing processing lines, optimizing operational efficiency without compromising floor space. Easy Maintenance: Engineered for user convenience, this equipment requires minimal maintenance, reducing downtime and ensuring uninterrupted production ...
metals Article Production of Ferronickel Concentrate from Low-Grade Nickel Laterite Ore by Non-Melting Reduction Magnetic Separation Process Guorui Qu 1,2, Shiwei Zhou 2,3, Huiyao Wang 2,3, Bo Li 1,2,3 and Yonggang Wei 1,2,3,* 1 State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming …
Magnetic Separators that easily separate ferromagnetic and paramagnetic particles – and remove tramp metals – from dry solids or slurries. ... Magnetic separators are renowned for their separation of magnetic ore; they can also serve as an electromagnet – effective for removing tramp metals, providing the ideal solution for magnetic ...
