Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium resources. Here, the separation of ilmenite from VTM ore is studied by combining magnetic separation and flotation technologies. In …
Magnetic separation: The magnetic separation experiments were performed using a drum type wet low-intensity magnetic separator. Drum rotation speed was selected as 25 rpm, pulp density in the mixing tank was adjusted to 10% of solids by weight. In the first magnetic separation circuit, a rougher magnetic and non-magnetic product were …
Here we present a method for efficient and accurate apatite and zircon mineral phase identification and verification using X-ray micro-computed tomography (microCT) of grain mounts that provides …
magnetic separation, and electrostatic separations. These methods are usually used in combination. They are designed to beneficiate ore minerals from gangue by exploiting their respective physical and chemical properties [ 18, 19]. Magnetic Separation The difference in magnetic susceptibility of the REEs and the gangue minerals is used to ...
Three different types of heavy liquids and a magnetic separator (Frantz) can be found in the mineral separation room. This room is mostly used for separating heavy minerals - like zircon, monazite and apatite - from lighter minerals. Zircon and monazite are important minerals for U/Pb dating with the help of laser ablation and a mass spectrometer.
To improve the magnetic separation efficiency, several novel separation system based on magnetic NPs have been developed, such as Fe 3 O 4 @SiO 2 @P(St-MA)/Ni-NTA ... and the composite coatings were found to enhance the apatite mineralization, as affirmed by SEM-EDX analysis. The assessment of hemocompatibility …
The objective of this paper is to investigate the efficient condition for leaching of REEs from apatite-iron ore sample using magnetic separation and leaching with the sulphuric acid solution.
Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for simultaneous iron recovery and dephosphorization from HPOIO by oxidation roasting–gas-based reduction (ORGR) and magnetic separation process was developed.The underlying …
A wet high-intensity magnetic separator was used to remove iron bearing minerals. As results, 71% of iron was separated into the magnetic fraction from the iron rich apatite sample, while 92% of REEs were remained in the non-magnetic fraction. Then non-magnetic fraction was decomposed by dilute sulphuric acid solution.
In previous studies, we synthesized the magnetic core-shell structured Fe 3 O 4 /PMG/IDA-Ni 2+ nanoparticles. The Ni 2+ on the surface of nanoparticles provides abundant docking sites for histidine, and the composite nanoparticles showed potential applications in the separation and purification of histidine-tagged (His-tagged) proteins. Meanwhile, the …
Rare earth roll magnetic separators (RERMS) and induced roll magnetic separators (IRMS) are the simple and efficient dry high-intensity magnetic separators used for upgrading different paramagnetic minerals. These are the most popularly adopted units for separation of mineral sands, but its application for processing of other minerals is …
Hierarchical Fe3O4@Cu-apatite nanoparticles (NPs) were synthesized via a facile hydrothermal method. The Fe3O4 cores present spherical shape and have a mean diameter of 300nm, and the Cu-apatite shell with thickness of about 50nm is composed of a large number of sheets. ... Selective binding and magnetic separation of histidine …
Neutron powder diffraction (PND) or elastic neutron scattering enables to determine nuclear and magnetic structure of solids. Most of the information on the nature of ordered magnetic phases or …
During SMR, the limonite transformed into magnetite with strong magnetism, and structures of iron ore became loose and porous. These changes enhanced the effect of magnetic separation and separation of apatite from magnetite. In general, this work provides a fresh approach to the efficient utilization of high-phosphorus waste limonite.
7 and apatite) was studied by using the technique of direct reduction-grinding-magnetic separation. The mechanism of calcium compounds to reduce phosphorus was investigated from ... as magnetic separation and flotation [6, 7], owing to its complex properties, including a low iron grade, complex mineral structure, and high phosphorus content [8 ...
The mechanism of separation of quartz and apatite during the reverse flotation process using the amine collector at pH 3 and 7 is schematically summarized in Fig. 7. Specifically, the adsorption of the collector on the quartz surface at pH 3 is greater than that on the apatite surface and effective flotation separation can be achieved. ...
A considerable amount of ultrafine magnetite as the iron source will end up in the tailing dams since the magnetic separation process markedly drops as the particle size. Cationic reverse ...
Tailings with different phosphate contents from the magnetic separation process of magnetite have been studied for apatite recovery by flotation. With the …
• Apatite upgrading • Sulphide ore recovery and separation The success of any magnetic separation process is governed by the property of the material to be collected and the structure of the separator to carry out the process. This can be expressed in the relationship between on one side the competing forces and the magnetic force on the other.
After washing and separation, the MNPs were added to 1 M CaNO 3 ·4H 2 O solution. This mixture was added dropwise to 0.6 M potassium phosphate while stirring, and finally, the precipitated materials were hydrothermally treated for 20 h at 200°C. ... In the first method, biomagnetic apatite, that is, 7 wt.% magnetic nanoparticles with collagen ...
Magnetite-apatite (MtAp) deposits are an important source of iron and critical metals, yet their ore genesis is poorly understood. Here, authors propose that the separation of multiple melts ...
After magnetic separation, basic leaching tests were conducted to investigate the ... Intuitively, it is possible to obtain REE concentrates by selective separation of REE-bearing apatite from the ...
Kiruna geology and magnetite-apatite ores. There are over 40 known magnetite-apatite deposits located in the Norrbotten region, with Kiirunavaara being the largest estimated at nearly 2 Gt before extraction of high-grade iron ore averaging 30–70% Fe (e.g., Cliff et al. 1990; Hallberg et al. 2012; Martinsson et al. 2016; Westhues et al. …
(3) Grinding-magnetic separation. The roasted products were crushed to less than 1 mm, from which 15 g of the sample was taken for stage grinding-stage magnetic separa-tion. The fineness of the first and second-stage grinding was −74 µm for 80.59wt%, and –45 µm for 83.49wt%, respect-ively. The magnetic separation of the slurry obtained from
Separated preparation of prealloys and amorphous alloys results in severe solidification–remelting and beneficial element removal–readdition contradictions, which markedly increase energy consumption and emissions. This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction …
After magnetic separation, basic leaching tests were conducted to investigate the influence of the acid type and concentration, temperature, and the pH on the REE leaching level and ... Intuitively, it is possible to obtain REE concentrates by selective separation of REE-bearing apatite from the ore. Froth flotation is a common process ...
Nature Communications - Magnetite-apatite (MtAp) deposits are an important source of iron and critical metals, yet their ore genesis is poorly understood. …
Hierarchical Fe 3 O 4 @Cu-apatite nanoparticles (NPs) were synthesized via a facile hydrothermal method. The Fe 3 O 4 cores present spherical shape and have a mean diameter of 300 nm, and the Cu-apatite shell with thickness of about 50 nm is composed of a large number of sheets. Using the high affinity of Cu 2 + on the surface …
DOI: 10.1016/j.jinorgbio.2015.12.017 Corpus ID: 1147659; Selective binding and magnetic separation of histidine-tagged proteins using Fe3O4/Cu-apatite nanoparticles. @article{Li2016SelectiveBA, title={Selective binding and magnetic separation of histidine-tagged proteins using Fe3O4/Cu-apatite nanoparticles.}, author={Ping Li and Liangliang …
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 …