Effects of CaO Addition on the Iron Recycling from Nickel …

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 …

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Preparing Ferro-Nickel Alloy from Low-Grade Laterite Nickel Ore …

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 …

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Magnetic separation for recovering iron resources from …

The results show that gravity separation and flotation have no obvious separation effect on iron minerals in nickel metallurgical slag, and magnetic separation has a certain separation effect. At present, the accumulated industrial waste products have been subjected to strict control, and there is an urgent need to recycle metallurgical slag.

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Efficient enrichment of nickel and iron in laterite nickel ore …

The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores. Results show that nickel–iron …

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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 …

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Magnetic Separation

a first magnetic separation to release the metallic fraction (accumulators) from the polymeric fraction; – knife milling of the accumulators to separate the metallic cases and screen from paste and separators; – a second magnetic separation of the nickel-containing parts of the accumulators; and –

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Nickel recovery from electric arc furnace slag by magnetic separation

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 ...

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Facile fabrication of nickel immobilized on magnetic …

The recyclability of the prepared magnetic nanoparticles for separation of 6 × histidine-tagged recombinant protein was tested in four successive runs of protein-A separation (Fig. 10). After each separation, the magnetic nanoparticles were washed with Strip Buffer (100 mM EDTA, 500 mM NaCl, 20 mM Tris–HCl, pH 7.9) and at last dried in …

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Characterization of a Nickel Sulfide Concentrate and Its

Based on these findings, potential processing options, such as magnetic separation, gravity separation, and froth flotation, for recovering and upgrading nickel from this concentrate are discussed. Notably, with the significant presence of ultrafine/fine pyrrhotite content, averaging around 52% in the minus 38 µm fraction, novel flotation ...

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Magnetic separation for mining industry – Magnetense

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 …

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High-Grade Ferronickel Concentrates Prepared …

In this study, high-grade ferronickel concentrates were obtained through a carbothermal reduction and magnetic separation using laterite nickel ore and anthracite as raw materials. The effects of …

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Upgrading low nickel content laterite ores using selective …

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 …

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Particle separation in a microchannel by applying magnetic fields …

Motion of particles with different sizes are analyzed due to the effects of magnetic fields and Nickel Sputtering. • The distribution of the magnetic force on the particles are confirmed by analytical data. • Three models (including magnet arrangements and Nickel layer) are presented to increase the separation efficiency. •

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Effective and economical treatment of low-grade nickel …

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 …

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Magnetic Separation: Process & Techniques

Magnetic separation is a process widely used in mineral processing and recycling industries to separate magnetic materials from non-magnetic ones, utilizing the magnetic properties possessed by specific elements or compounds. This technique is particularly effective in the concentration of iron ores and the removal of impurities from non ...

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Magnetic separation of iron precipitate from nickel sulfate …

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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Preparation of Nickel–Iron Concentrate from Low-Grade …

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 …

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Magnetic Separation

Magnetic separation is a process where a contaminant is first attached onto a magnetic carrier material (e.g., magnetite), and subsequently, the contaminant-laden carrier is …

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Magnetic separation of iron precipitate from nickel sulfate …

Request PDF | On Jul 17, 2015, Haisheng Han and others published Magnetic separation of iron precipitate from nickel sulfate solution by magnetic seeding | Find, read and cite all the research you ...

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Nickel Ore Beneficiation Plant

Nickel ores mainly include copper-nickel sulfide ore and nickel oxide ore (laterite nickel ore). The most important is the nickel ore flotation process, magnetic separation and gravity separation are usually auxiliary beneficiation methods.. We can customize nickel ore beneficiation process and equipment to achieve comprehensive utilization of …

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What is the Principle of Magnetic Separation?

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 …

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Preparation of ferronickel from nickel laterite via coal-based

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. …

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The Comprehensive Guide to Nickel Processing

Magnetic separation: Magnetic separation is used to separate nickel minerals that are magnetic from non-magnetic gangue minerals. Magnetic separators apply a magnetic field to attract and separate magnetic particles from the ore. Flotation: Flotation is a widely used beneficiation technique for nickel ores.

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Magnetic separation for recovering iron resources from acid …

The results show that gravity separation and flotation have no obvious separation effect on iron minerals in nickel metallurgical slag, and magnetic …

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Utilization of limonitic nickel laterite to produce ferronickel

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 determined the underlying reason for the poor separation of iron and nickel during the magnetic separation process.

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Utilization of nickel slag using selective reduction followed …

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 …

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Separation of cobalt, lithium and nickel from the "black …

The commonly reported procedure includes crushing and physical magnetic separation. Paper and plastic particles have been separated using appropriate sieves. ... The separation of lithium and nickel after precipitation with Na 2 CO 3 must be resolved. The D2EPHA is well known to be able to extract a number of metals in the ion-exchange ...

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Upgrade of nickel and iron from low-grade nickel laterite by …

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 …

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Chloridization and Reduction Roasting of High-Magnesium Low-Nickel

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 …

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Novel magnetic iron–nickel/poly(ethersulfone) mixed matrix …

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 …

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Extraction of ferronickel concentrate from laterite nickel ore …

In this study, a process of reduction roasting–magnetic separation of laterite nickel concentrate is proposed. The effects of spent cathode carbon as a reducing agent, with a low amount of CaO used as an additive, on the reduction roasting processes of laterite nickel ores are studied. Increasing the grade of iron and nickel in laterite ...

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Magnetic separation of iron precipitate from nickel sulfate …

DOI: 10.1016/J.HYDROMET.2015.07.001 Corpus ID: 93613069; Magnetic separation of iron precipitate from nickel sulfate solution by magnetic seeding @article{Han2015MagneticSO, title={Magnetic separation of iron precipitate from nickel sulfate solution by magnetic seeding}, author={Hai-sheng Han and Wei Sun and Yue …

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Crystallization and Beneficiation of Magnetite for Iron

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 …

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What are the Advantages and Disadvantages of Magnetic …

Magnetic separation performs poorly with non-magnetic or only weakly magnetic materials like gold and graphite. Using it as the sole method won't effectively process these ores. Thus, magnetic separation applications remain constrained regarding suitable ore bodies. Most mineral separations still require gravity, froth flotation, or other ...

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

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 …

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Preparing Ferro-Nickel Alloy from Low-Grade …

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 …

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