In the present study, a green magnetization roasting process was proposed by using siderite (FeCO 3) as the reductant.The influences of the siderite dosage, roasting temperature and roasting time on the magnetization roasting process were investigated. The saturation magnetization of roasted samples was analyzed by a vibrating sample …
To date, the magnetization switching induced by TI SOT is solely reported in a Cr-doped TI at a very low temperature (1.9 K) with an external magnetic field 11, and the SOT-induced magnetization ...
In order to explore the magnetic moment rotation in nanocrystalline soft magnetic alloys under high-frequency sinusoidal excitation, based on G. Herzer's stochastic anisotropy theory and symmetry principle, a three-dimensional model of nanocrystalline alloy was established, and a sinusoidal alternating magnetic field with a frequency f of 1 kHz to …
A brief survey of the recent advances in Fe-based nanocrystalline soft magnetic alloys has shown that the saturation magnetization (J s) of these alloys is governed by the mass fraction, rather than the atomic fraction, of the nonmagnetic additives.Thus, the ultimate limit of J s in the alloys prepared by nano-crystallization of …
Iron ore tailings, which are important secondary resources, have outstanding latent application value in iron recovery. In this study, a pilot-scale experiment on the iron recovery from iron ore tailings was investigated using innovative technology of pre-concentration and suspension magnetization roasting (SMR), followed by magnetic …
Magnetic particle inspection is an inspection method used to identify defects on the surface of ferromagnetic materials by running a magnetic current through it. It can also be used to detect defects just beneath the surface …
Spin current, a flow of spin angular momentum, is the essential ingredient for spin-transfer torque. One class of spin currents is the electrical spin current J S, which is associated with electron spins (1–3).When J S is absorbed by a magnet, the magnetization experiences an electrical spin torque, and its direction is reoriented ().The electrical spin …
Different applications of magnets in the mining sector. The relationship between magnets and mining is much greater than it might appear at first glance. In the first place, because many of the magnetic components or the non-magnetic but magnetized components used in the manufacture of both domestic and industrial magnets are …
Permanent magnet synchronous motors (PMSMs) are highly affected by magnetization, which determines the magnetization level in the permanent magnet (PM). There are three main magnetization methods: single-unit, stator coil, and post-assembly magnetization. Post-assembly magnetization is widely used in PMSM mass production …
Magnetic experiments are powerful tools to study fundamental properties and to check the qualities of samples. Temperature, stress, and impurities of materials can all affect magnetic properties and play an important role in the utilization of these materials for engineering applications. The estimation and analysis of the spontaneous …
The FC magnetization, M FC (T), is measured by initially applying a small magnetic field to the sample at room temperature. The sample is then cooled and the magnetization increases as the thermal fluctuations reduce. In contrast with the ZFC magnetization, M FC (T) saturates at low temperature.
Fig. 6 (a) depicts the paramagnetic state above Tc (spontaneous magnetization disappears). In 0° domains, the spontaneous magnetization rotates the spins and the electron clouds into the orientation determined by the crystal anisotropy, as shown in Fig. 6 (b). The nuclei are forced further apart, and positive spontaneous magnetostriction occurs.
Magnetization. Magnetization of Nd-Fe-B is carried out using similar methods and equipment as described earlier for Sm-Co-based magnets. Dy Diffusion. In …
mining operations but it should be confined to a surface mining method to mine out the dimensional stones such as slate, marble, granite etc. Quarrying is a
In NMR the net magnetization is detected in the xy plane, giving rise to the FID (Free Induction Decay). The process by which the magnetization in the xy plane decays to its equilibrium value of zero is known as T 2 relaxation, transversal relaxation, relaxation in the xy plane, or spin-spin relaxation. However, in practice, the transversal …
An airborne magnetic survey revealed three east–west elongated magnetic anomalies, characterized by a significant remanent magnetization. The sources of these anomalies …
Niron's proprietary Clean Earth Magnet® technology based on Iron Nitride enables magnets that possess inherently higher magnetization compared to today's rare earth magnets and will enable a ...
Magnetization is the degree to which a body is magnetized once it is magnetized. Magnetization is the process by which an element acquires magnetic properties, through the application of a magnetic field. A magnetic field is an electrically charged area that possesses a force produced as a result of the traffic of electric charges.
The application of magnetization roasting involving refractory iron ore has recently received a surge of attention [5] [6]. While low-carbon production is one of the development directions of ...
Coal has in general a wide range of density from minus 1.3 to plus 2.0 g/cm 3 because of its variations in purity, rank, and porosity, etc. The coal density has great impact on froth flotation performance, but much less attention has …
Because rocks possess a spectrum of coercivities they often contain both "hard" and "soft" remanent magnetizations; moreover, the relative importance of the different …
Niron's proprietary Clean Earth Magnet® technology based on Iron Nitride enables magnets that possess inherently higher magnetization compared to today's rare earth magnets and will enable a ...
Surface magnetization roasting enables efficient iron recovery without the complete phase reconstruction from hematite to magnetite. This can significantly reduce …
Our geophysical survey provides essential data to improve the geological and mining potential of the area, allowing to design future research activities. The use of drones in mining and geological …
The magnetic method is the most promising method that can be used to inspect large areas of reinforced concrete (RC) structures. Magnetization is a crucial process in this method. The paper aims to present the impact of the magnetization method on the results in the detection of reinforced bars (rebars) and the evaluation of concrete …
As a typical refractory iron ore, the utilization of limonite ore with conventional mineral processing methods has great limitations. In this study, suspension magnetization roasting technology was developed and utilized to recover limonite ore. The influences of roasting temperature, roasting time, and reducing gas concentration on the …
Microwave magnetization roasting has become a hot research topic in recent years due to it has the advantages of high efficiency, catalytic action, selective heating, and environment protection [[31], [32], [33]]. However, the microwave magnetization roasting technology is still in the research stage, and there is no industrial application example.
The 3D magnetization intensity (or susceptibility) inversion needs to give the magnetization direction in advance or to assume that the total magnetization direction is parallel to the geomagnetic ...
In this paper, an innovative method is proposed to upgrade iron and remove phosphorus from high-phosphorus oolitic hematite ore by the sodium magnetization roasting–magnetic separation–sulfuric acid and sodium hydroxide leaching process. The process parameters of sodium magnetization roasting, acid leaching, and alkaline …
Magnetization treatment effectively relieved emitter clogging, which increased the average discharge variation rate (Dra) by 4.1–29.0% and 2.6–64.4%, respectively, and decreased the dry weight (DW) of the clogging substance by 14.0–64.6% and 15.0–75%, respectively, in the two planting seasons, compared with that of the non …