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Individual enrichment of titanium and iron from low …

Compared with the coal-based reduction-magnetic separation, the preconcentration-reduction roasting and magnetic separation used in this study treats lower-grade beach titanomagnetite to form the direct reduction iron with a higher iron grade and titanium concentrate with higher TiO 2 grade. This demonstrates the obvious …

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Influence of particle size on dry high-intensity magnetic separation …

Magnetic separation of magnesite and dolomite was carried out by using induced roll magnetic separator. A magnesite concentrate of 1.12% CaO with 46.02% yield was obtained from a feed of 5.73% CaO. The ore mineralogy reveals that dolomite is associated with goethite, whereas, magnesite is associated with hematite and magnetite. ...

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Magnetic wood sponge: efficient oil/water separation, dye

The magnetic properties of MWS allow for easy remote retrieval using a magnet, making it a cost-effective and reusable solution for environmental remediation. …

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Minerals | Free Full-Text | Preparation of Direct Reduced Iron …

A novel process for preparing direct reduction iron (DRI) and titanium nitride (TiN) from Panzhihua titanomagnetite concentrate is proposed. This process involves pelletizing, direct reduction roasting and magnetic separation. The effects of reduction temperature, coal dosage and reduction time on the phase transformation of composite …

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Magnetic particles for the separation and purification of …

Magnetic separation of nucleic acids has several advantages compared to other techniques used for the same purpose. Nucleic acids can be isolated directly from crude sample materials such as blood, tissue homogenates, cultivation media, water, etc. ... The direct use of magnetic beads, e.g. in PCR or other amplifications, without eluting …

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A review of physical processes used in the safe recycling of …

The cost-effectiveness of such a magnetic separation process for direct recycling of cathode materials is questionable, as differing NMC ratios will not separate easily. However it has applications in recycling processes with a mixed feed of cells for extraction of cathodes [16]. The ReCell project has investigated the use of wet magnetic ...

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Zero-Waste Recycling Method for Nickel Leaching Residue by Direct …

The direct reduction–magnetic separation process was appropriate for recovering iron resources from nickel leaching residues. The residue was reduced by coke under controlled roasting conditions to generate metallic iron, which could be collected through low-intensity magnetic separation. The maximum iron grade and recovery …

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Ball milling coupled cascade magnetic separation to

The effect of ball milling on magnetic separation efficiency was compared. As shown in Table 1, direct magnetic separation (500 mT) was performed on samples with different alkali disaggregation times. The results showed that with the extension of alkali disaggregation time, the recovery efficiency and grade of Fe in the magnetic …

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Iron recovery from bauxite residue (BR) through magnetic separation

Ultrasounds source was a stand-mounted ultrasonic lab device UP200S (Herchel, Germany). Two processing routes were applied to obtain a magnetic and a nonmagnetic fraction either through the direct implementation of magnetic separation to BR or after hydrothermal treatment, as shown in Fig. 1. Download: Download high-res image (99KB)

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Iron recovery from lead smelting water-quenching slag by …

This results in an increase in the grade of the iron concentrate and the small portion of the metallic iron is ground too finely with the chondrites into the magnetic separation tailings. At the grinding time of 45 min, the magnetic separation iron ore concentrate exhibits improved iron grade and recovery rate (93.61% and 90.71%, …

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Synchronous enrichment of phosphorus and iron from a …

In this study, direct reduction-magnetic separation process was applied to enrich phosphorus and iron to prepare Fe-P crude alloy from a high phosphorus oolitic hematite ore (HPOH). The results show that at lower temperatures and with absence of any of additives, Fe cannot be effectively recovered because of the oolitic structure is not …

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Magnetic field-assisted enhancement of photocatalytic …

Thus, a direct Z-scheme heterojunction model is an excellent approach to disclose MO degradation mechanism. The as-prepared Co 4 PW 9 /CeO 2 composite successfully form Z-type heterojunction. ... The magnetic field …

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Mechanical entrainment study by separately collecting

High-gradient magnetic separation (HGMS) is a physical separation technique of isolating fine weakly magnetic particles in a fluid through applying a magnetic field strength (0.1 T ∼ 1.5 T). ... No direct evidence proved that captured particles in the downstream side were less contaminated under the same fluid velocity. Moreover, …

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Direct Affinity Ligand Immobilization onto Bare Iron Oxide

Magnetic separation is a promising alternative to chromatography for enhancing the downstream processing (DSP) of monoclonal antibodies (mAbs). However, there is a lack of efficient magnetic particles for successful application. Aiming to fill this gap, we demonstrate the suitability of bare iron oxide nanoparticles (BION) with physical …

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3D of NiZn ferrite architectures with high magnetic

Numerous techniques have been extensively developed, including stereolithography [14], direct ink writing (or extrusion free forming) ... Schematic illustration of magnetic separation of Fe 3 O 4 particles using NiZn ferrites (different zinc concentration) as magnetic filter; (b) The distribution of magnetic flux density around …

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Effective and economical treatment of low-grade nickel …

An innovative duplex process between DRMS (direct reduction-magnetic separation) and RKEF (rotary kiln-electric furnace) for treatment of low-grade nickel laterite in an effective and economical method was developed, which was demonstrated as a practicable way both in laboratory and industrial scales for not only the improved …

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Magnetochemistry and Magnetic Separation | SpringerLink

The effects of magnetic fields in chemistry and electrochemistry, along with methods of magnetic separation, are covered here. First there will be a generalized introduction to relevant aspects of magnetism, magnetic susceptibilities, and magnetochemistry. ... There have also been reports of a direct magnetic effect on …

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Modeling assessment of recovering iron from red mud by direct …

However, specific application of RSM combined with CCD to recover iron from red mud based on direct reduction–magnetic separation has not been reported, let alone being applied in hot briquettes. Thus, this paper aims at clarifying the individual and mutual relationships among variables, establishing a model to assess iron recovery from …

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Magnetic separations

Magnetic separation plays an increasingly important role in analytical chemistry, nanotechnology, biochemistry, and molecular biology research methods, and …

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Comprehensive recovery of lead, zinc, and iron from

Lead, zinc, and iron were recovered from jarosite residues using direct reduction followed by magnetic separation. The influence of the coal dosage, reduction temperature, and reduction time on the volatilization rates of lead and zinc and the metallization rate of iron were investigated. The results show that the volatilization rates …

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Magnetic Separation

Magnetic separation means applying magnetic separators with the appropriate magnetic field intensity, magnetic field gradient, and other conditions to separate different minerals …

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Magnetic Techniques for Mineral Processing

Magnetic separation, as a powerful technique for the manipulation of magnetic particles, has attracted worldwide attentions and achieved tremendous applications in the past several decades, due to its effectiveness, simple operation, low cost, and environmental sustainability. ... Magnetic induction is the direct and dominant …

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Iron removal from kaolinitic coal gangue via magnetic separation …

After magnetic separation, ... The small amount of iron in magnetite, only 1.04%, indicated that direct magnetic separation of KCG would be ineffective. Because the iron in silicate is difficult to extract [10], [24], [41], the maximum iron recovery rate is estimated to be less than 87.04% based on the percentage of iron in silicate (12.96%).

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Eriez Magnetic Separation

Eriez is world authority in magnetic separation technologies. Since 1942, Eriez provides a range of permanent and electromagnetic separators for many industries. Headquarters; ... Electromagnetic Separators use wire coils and direct current to provide a magnetic field which can be used to separate ferrous material from non ferrous products.

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Magnetic Separation in Bioprocessing Beyond the Analytical …

The typical application of magnetic separation is the direct collection of magnetic materials and separating them from the non-magnetic ones. This approach …

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A novel process to upgrade the copper slag by direct reduction-magnetic

An innovative technology for direct reduction-magnetic separation with the addition of Na 2 CO 3 and CaO was studied to upgrade copper slag assaying 40.33% Fe total and 0.65% Cu. It is difficult to recover iron and copper from the slag by direct reduction since the iron mainly occurs in fayalite and the copper exists in copper sulfide.

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A detoxification and value-added process for chromium ore …

The dust was co-processed with COPR by a direct reduction-magnetic separation process in this study. Through the strong reducing ability of solid carbon in Fe-C-bearing dust, the compounds of Cr and Fe were reduced to (Cr, Fe) 7 C 3 alloy during the reduction roasting process and then selectively recovered by magnetic separation. In …

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Effect of magnetic field orientation on high gradient magnetic

1. Introduction. Many people (Svoboda, 1981, Svoboda, 1994, Li and Watson, 1995, Newns and Pascoe, 2002) have over the past decades reported the dependence of high gradient magnetic separation (HGMS) performance on such key variables as magnetic field intensity, matrix material and shape, slurry velocity, etc.These …

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Application of Coal-based Direct Reduction-Magnetic Separation …

DOI: 10.1016/j.psep.2023.12.057 Corpus ID: 266587768; Application of Coal-based Direct Reduction-Magnetic Separation Process for Recycling of High-Iron-Content Non-Ferrous Metallurgical Wastes: Challenges and Opportunities

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Physical separation of iron ore: magnetic separation

This chapter introduces the principle of how low-grade iron ores are upgraded to high quality iron ore concentrates by magnetic separation. Magnetite is the most magnetic of all the naturally occurring minerals on earth and can be readily extracted by low-intensity magnetic separators from magnetite ores. ... When a direct electric current ...

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