Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. ... The effect of thermal treatment, magnetic separation, the addition of compounds (such as sodium sulfate ...
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 …
tion with online phase separation can be applied to various types of analytes by altering the recognition groups on the MNP surface. In this study, we demonstrated the detection of nickel(II) ions by the magnetic separation of TMLSA induced by phase transition under microow. Figure 1 shows a sche-matic diagram of the microow detection system.
Finally, the prepared magnetic mixed matrix PES membranes were dried at room temperature. Magnetic mixed matrix PES dope was prepared with both low (0.05%) and high (2%) concentrations of iron–nickel magnetic fillers. Table Table1 1 shows the coded name and composition of the fabricated blank PES and magnetic mixed matrix PES membranes.
The magnetic concentrates were applied to further improve the efficiency of smelting process based on DRMS-RKEF process at laboratory scale, which were produced from nickel laterite A by reduction at 1250 °C for 80 min with low-nickel concentrates of 20% (72.43% Fe, 4.65% Ni), composite additives of 5% and C/Fe of 2 followed by subsequent ...
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.
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 low-grade saprolitic laterite nickel ore using metallized reduction-magnetic separation was studied. In the research, the carbothermic …
Of course, upgrading nickel using magnetic separation highly depends on the ore mineralogy and mineral liberation, and if nickel is associated with magnetic minerals. Table 3 also shows that the percentage of iron increases (by ~70%) in the magnetic product for ores S and I, but not for ore L. On the other hand, more silicon bearing minerals ...
Magnetic separation is a process that uses magnets to separate magnetic materials from non-magnetic ones in a mixture. This technique takes advantage of the varying magnetic properties of different substances. The primary component involved in this process is the magnetic separator, a device designed to attract and separate magnetic materials ...
At this point, the magnet pulls any material susceptible to magnetic attraction onto the upper belt, effectively separating the unwanted metals from the rest of the bulk. How Magnetic Separation is Useful. Magnetic separation has been used in the mining industry for more than 100 years, beginning with John Wetherill's Wetherill Magnetic ...
particles (Falconer, 2003). Gravity separation is sometimes followed by magnetic separation to improve the grade of valuable minerals in magnetic concentrates when they are associated with magnetite particles. For example, in a nickel-cobalt laterite deposit in New South Wales, Australia, gravity separation followed by magnetic
Trans. Nonferrous Met. Soc. China 23(2013) 3421 3427 Utilization of nickel slag using selective reduction followed by magnetic separation Jian PAN, Guo-lin ZHENG, De-qing ZHU, Xian-lin ZHOU School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China Received 8 October 2012; accepted 30 January 2013 Abstract: In …
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.
Here, the iron content of the garnierite ore was increased through blending with limonite ore and, it was demonstrated that the nickel recovery from magnetic separation of the nickeliron alloy increases from 30.5% to 71.6% as the limonite ore content in the blend increased from 20% to 60%; beyond 60% content no improvement in nickel recovery ...
This study investigated the deep removal of complex nickel from simulated wastewater using magnetic separation and magnetic seed recycling. Nano-magnetite …
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.
In order to enable the selective concentration of nickel by magnetic separation, the calcination of laterite was carried out prior to the magnetic separation. The aim was to alter the crystalline structure of Fe species and therefore its magnetic properties. 2. Magnetic separation.
The effectiveness of thermal treatment and magnetic separation as an upgrading strategy for obtaining ferronickel from nickel laterite with varying composition and experimental …
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, …
Research on magnetic separation for complex nickel deep removal and magnetic seed recycling Yiqin Qiu 1,2 & Xiao Xiao1,2 & Ziwei Ye1,2 & Zhijie Guan1,2 & Shuiyu Sun1,2,3 & Jie Ren1,2 & Pingfan Yan1,2 ... magnetic separation experiments on complex nickel in this study were conducted based on this experimental design and results.
Because magnetite and magnesium ferrite were the dominant iron-containing phases in the oxidized nickel slag, magnetic separation was performed to separate these magnetic minerals. As presented in Figure 7, the recovery rate and yield of iron were first increased and later decreased as the CaO increased, while the iron content remained nearly ...
In this study, high-grade ferronickel concentrates were obtained through a carbothermal reduction and magnetic separation using laterite nickel ore and anthracite as raw …
Magnetic separation is a complex physical process in which magnetically susceptible composites are extracted from a liquid mixture using the magnetic properties of the composite. ... oxide nanoparticles with superior properties related to surface composition and defect structure. Keywords: Magnetic separation, carboxylate coating, nickel ...
Global Fourth-generation Vertical Ring High Gradient Magnetic separator (Oil-water complound cooling) Application: This type of magnetic separation machine is used in wet separation processes for smaller than 1,2 mm ( – 200 mesh of 30-100 %) of fine grained red mine (hematite) limonite, manganese ore, ilmenite and some kinds of weakly magnetic minerals like quartz, …
Li et al. (2010) investigated the effects of selective reduction and magnetic separation of nickel laterite ore containing 0.97% nickel to produce a high grade nickel concentrate. With regards to ...
The target of the current work is to investigate the possibility of nickel recovery from EAF slag by magnetic separation. To meet the target, the effect of the following parameters was studied ...
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 …
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 …
An effective strategy to achieve separation and recovery of iron and nickel from low-grade laterite ore via microwave carbothermic reduction roasting is reported. In this work, we …
The Project's nickel occurs as awaruite, a natural nickel-iron alloy containing approximately 75% nickel with no-sulfur and no-sulfides. Awaruite's properties allow for smelter-free magnetic separation and concentration, which could strengthen North America's critical minerals supply chain by reducing foreign dependence on nickel smelting.
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in …
1. Introduction. As one of the important strategic metals, nickel is widely used in the stainless steel and new material industries owing to its superior mechanical strength, high chemical stability, good ductility, good catalytic activity, and strong corrosion resistance [1,2,3].The nickel used in the stainless steel industry accounts for approximately 66.2% of the …
What is Magnetic Separation? Magnetic separation is a method of using magnets to remove magnetic and ferrous materials from mixtures. Essentially, when a magnetically susceptible material is placed in a magnetic field, magnets can exert magnetic forces on those materials, attracting them closer while non-susceptible materials remain unaffected.
In this paper, the process of solid-state metalized reduction and magnetic separation was investigated for preparation of nickel–iron concentrate from a low-grade laterite nickel ore. The effects of reduction temperature, reduction time, amount of dosages, and magnetic field strength on grades and recoveries of nickel and iron were studied. The results showed …
The magnetic separation tailings of saprolite laterite ore containing magnesium processed by roasting and magnetic separation are used as raw materials, and the product of magnesium oxide was obtained by the process of sulfuric acid leaching, removing iron, precipitating magnesium and roasting. The effects of sulfuric acid concentration, leaching …
The iron resources in nickel slag were recycled by oxidation and magnetic separation. The effects of holding time, temperature, air flow rate and basicity on the crystallization of magnetite were investigated systematically. Moreover, the influence of particle size and magnetic flux density on the recovery and grade of iron during the magnetic …
Experimental fl owsheet is depicted in Figure 2, consisting of coal-based selective reduction of nickel laterite-magnetic separation of reduced sample. The row laterite ore was crushed to 75 per cent
Therma-Max™ LSA Streptavidin is a thermoresponsive magnetic nanoparticle (TMNP). It can be introduced conveniently to molecular recognition groups by avidin–biotin interaction. In this study, we demonstrated the detection of nickel(II) ions by the magnetic separation of TMNP induced by their phase transition under microflow. The NTA-tagged …