search results - magnetic susceptibility of minerals in high magnetic fields

search results - magnetic susceptibility of minerals in high magnetic fields

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Magnetic Susceptibility of Minerals in High Magnetic Fields

MAGNETIC SUSCEPTIBILITY OF MINERALS IN HIGH MAGNETIC FIELDS By D. C. Dahlin 1 and A. R. Rule2 ABSTRACT The U.S. Bureau of Mines investigated the magnetic susceptibility of minerals as a function of mag­ netic field strength to determine how it might affect the potential for high-field magnetic separation as

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Magnetic susceptibility of minerals in high magnetic fields

"The U.S. Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies. Single-mineral concentrates were prepared from specimens from the same deposit to compare

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Magnetic susceptibility of minerals in high magnetic

Jan 01, 1993 @article{osti_5951936, title = {Magnetic susceptibility of minerals in high magnetic fields}, author = {Dahlin, D C and Rule, A R}, abstractNote = {The US Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies.

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Magnetic Susceptibility of Minerals in High Magnetic Fields

Magnetic Susceptibility of Minerals in High Magnetic Fields Podcast Their magnetic susceptibility is positive, often very high in absolute value and dependent in a complex way on the magnetizing field (k is a The magnetic susceptibility depends obviously on the content of iron in a

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NIOSHTIC-2 Publications Search 10003174 Magnetic

The U.S. Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies. Single-mineral concentrates were prepared from specimens from the same deposit to compare magnetic susceptibilities of minerals that occur together

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Magnetic susceptibilities of minerals USGS

Magnetic separation of minerals is a topic that is seldom reported in the literature for two reasons. First, separation data generally are byproducts of other projects; and second, this study requires a large amount of patience and is unusually tedious. Indeed, we suspect that most minerals probably are never investigated for this property.

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Magnetic susceptibility of minerals in high magnetic

Magnetic susceptibility of minerals in high magnetic fields . By . Abstract "The U.S. Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies. Single-mineral

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Magnetic properties of rocks and minerals

iron-bearing minerals. 2. MAGNETIC SUSCEPTIBILITY Magnetic susceptibility is a measure of the magnetic response of a material to an external magnetic field. The volume susceptibility k, measured in dimensionless units, is defined as the ratio of the material magnetization J (per unit volume) to the weak external magnetic field H: J=kH. (1)

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Magnetic Susceptibility Earth Materials and Earth

Jul 03, 2016 The ratio between applied magnetic field and a material’s (induced) magnetization is called magnetic susceptibility. It is given the symbols k, κ, or χ. If you were to measure magnetic susceptibility carefully, you could identify differences between these minerals perhaps even between the different orientations of the mica.

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The Use of Magnetic Susceptibility of Rocks in

4. Magnetic susceptibility of minerals . Except for rare monomineralic rocks, rocks consist in general of all three kinds i.e. diamagnetic, paramagnetic and ferromagnetic minerals. In order to get an idea of the contribution of individual minerals to the magnetic susceptibility of a rock, Table 1 shows the susceptibility of the most

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Magnetic susceptibility of minerals in high magnetic

Magnetic susceptibility of minerals in high magnetic fields . By . Abstract "The U.S. Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies. Single-mineral

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Magnetic susceptibility of minerals in high magnetic

Dahlin, D. C. and Rule, A. R. Magnetic susceptibility of minerals in high magnetic fields [microform] / by D.C. Dahlin and A.R. Rule U.S. Dept. of the Interior, Bureau of Mines Washington, D.C 1993 Australian/Harvard Citation

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The effect of magnetic susceptibility and magnetic field

Aug 01, 2020 When inhomogeneities in the static magnetic field are small, the CPMG pulse sequence can refocus the spins. However, in the presence of materials with high magnetic susceptibility, the application of the static magnetic field induces a magnetization in the magnetic mineral resulting in a spatially dependent secondary component of the magnetic field, B′(r).

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Magnetic Properties of Minerals Bunting Redditch

Aug 10, 2020 The differences in magnetic susceptibility are sufficient to enable separation using high-intensity magnetic separators. Bismuth is the only one example of a diamagnetic mineral. Paramagnetic minerals are more widespread and include Hematite and Franklinite.

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Magnetic Minerals What are the Strong Magnetic Minerals

Aug 09, 2019 According to the specific magnetic susceptibility of minerals, all minerals can be classified into the following types (1) Strongly magnetic mineral X>4.0×10-5 m3/kg, it can be recovered in the weak magnetic separator, its magnetic field strength up to 480 ~ 1840 kA/m

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Magnetic Susceptibility Science 304

Jul 03, 2016 The ratio between applied magnetic field and a material’s (induced) magnetization is called magnetic susceptibility. It is given the symbols k, κ, or χ. If you were to measure magnetic susceptibility carefully, you could identify differences between these minerals perhaps even between the different orientations of the mica.

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The Use of Magnetic Susceptibility of Rocks in Geological

4. Magnetic susceptibility of minerals . Except for rare monomineralic rocks, rocks consist in general of all three kinds i.e. diamagnetic, paramagnetic and ferromagnetic minerals. In order to get an idea of the contribution of individual minerals to the magnetic susceptibility of a rock, Table 1 shows the susceptibility of the most

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Density and Magnetic Susceptibility Values for Rocks in

Magnetic Susceptibility Magnetic susceptibility depends largely on a rock’s magnetic mineral content. Mafic rocks generally have higher magnetic susceptibilities than felsic rocks because mafic rocks are typically more abundant in strongly magnetic minerals such as magnetite (Carmichael, 1982). 2

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Impact of Mineralogy on Magnetic Properties

Impact of Mineralogy on Magnetic Properties. Magnetism in rocks is primarily attributed to the presence of iron-bearing minerals. These minerals, and their relative importance in rock magnetism, are listed here. The magnetic susceptibilities of common rock types are discussed qualitatively.

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Clean utilization of high-iron red mud by suspension

Oct 01, 2020 The magnetization of the HIRM was measured using a VSM, then the specific magnetic susceptibility was calculate using Eq. . The results, displayed in Fig. 1, show that the magnetization and the specific magnetic susceptibility of the sample behaves very differently with changing external magnetic field intensity.The magnetization of the high-iron red mud increases nearly linearly with the

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Principles of Magnetic Separation Minerallurgy

Oct 06, 2021 Figure : Schematic representation of forces acting upon a particle (Svoboda et aI., 2003) The principles of magnetic separation are such that when particles of different magnetic susceptibility are placed in a magnetic field, they tend to disrupt the direction or the flow of the magnetic field and at the same time lead to the particles being magnetically induced.

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Magnetic Separation Mining Fundamentals

Magnetic separation is a process by which magnetically susceptible material is separated from a mixture by the application of a strong magnetic field. Iron ores are usually subjected to magnetic separation process due to the high magnetic susceptibility of iron.

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Magnetic Method US EPA

Jun 03, 2021 Anomalies in magnetic data can indicate the presence of subsurface zones with high magnetic susceptibility and, thus, be used for site characterization (Burger, 1992; Telford, 1990). Theory Earth’s magnetic field, which is generated by the outer core and protects the planet from solar energy, behaves as if a giant bar magnet ran along Earth

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Content page

The maximum induced magnetic field strength (i.e. the maximum anomaly), T, of a 3D object can be roughly estimated using T = M/r 3 (or T = 2M/r 3 for latitudes greater than 60 0), where M is the magnetic moment estimated from M = k F V (k is susceptibility, F is ambient field strength, and V is volume). r is the distance to the target.

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INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY

minerals posses high magnetic susceptibility (much higher than paramagnetic and diamagnetic minerals), their presence overestimate the content of paramagnetic minerals if used the model equations described earlier. To compensate for their effect, we use high field magnetic susceptibility measurements using the VFTB kit shown in

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IDENTIFICATION OF MAGNETIC MINERALS BY SCANNING

with conducting material the magnetic grains with high demagnetizing field are easily identifiable under the scanning electron microscope. The different mineralogy observed by this method is confirmed by temperature dependent variation of magnetic susceptibility, revealing titanomagnetite and ilmenohematite as magnetic carriers in the

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Magnetic Susceptibility Science 304

Jul 03, 2016 The ratio between applied magnetic field and a material’s (induced) magnetization is called magnetic susceptibility. It is given the symbols k, κ, or χ. If you were to measure magnetic susceptibility carefully, you could identify differences between these minerals perhaps even between the different orientations of the mica.

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Magnetic susceptibility of sintered 30NM steel in the area

Magnetic susceptibility of minerals in high magnetic fields. Book Dahlin, D C; Rule, A R. The US Bureau of Mines investigated the magnetic susceptibility of minerals as a function of magnetic field strength to determine how it might affect the potential for high-field magnetic separation as an alternative to other separation technologies

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Density and Magnetic Susceptibility Values for Rocks in

Magnetic Susceptibility Magnetic susceptibility depends largely on a rock’s magnetic mineral content. Mafic rocks generally have higher magnetic susceptibilities than felsic rocks because mafic rocks are typically more abundant in strongly magnetic minerals such as magnetite (Carmichael, 1982). 2

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Magnetic Maps Overview USF

present. These minerals, and more speci cally magnetic domains within individual minerals, acquire a magnetic eld when submersed in the Earth’s magnetic eld, a property known as magnetic susceptibility, and retain a magnetic eld independent of the Earth’s eld,

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Minerals Free Full-Text Evaluation of Magnetic

In the present case, the feed material contains a high proportion of ferromagnetic minerals (e.g., magnetite). In the case of ferromagnetic material, the susceptibility is a function of the applied magnetic field. It is thus not constant in the variable external field of a magnetic

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Magnetic birefringence of minerals ScienceDirect

Jan 15, 2005 The magnetic dipole responsible for coupling with B to give rise to the particle alignment can arise from either (or both) a permanent, structural dipole or a field-induced dipole arising from any magnetic susceptibility anisotropy, as indicated in the following equations. In this study, particle cylindrical symmetry is assumed, so that within

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Magnetic susceptibility

Volume susceptibility. Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field.A related term is magnetizability, the proportion between magnetic moment and magnetic flux density. A closely related parameter is the permeability, which expresses the total magnetization of material and

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GEO ExPro Magnetics for Hydrocarbon Exploration

Magnetic Anomalies as Hydrocarbon Indicators Magnetic minerals deposited in sedimentary layers reflect the provenance of the sediments. For the continental shelf offshore Norway, Mørk, McEnroe and Olesen (2002) documented that the magnetic susceptibility and remanence are generally small, and few sands and shales were found to have high values.

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New High‐Temperature Dependence of Magnetic Susceptibility

Aug 14, 2019 3.1.2 High-Temperature-Dependent Magnetic Susceptibility. The selected eight bulk and particle-sized modern soil samples on the NW-SE transect of MS-77–MS-107 were subjected to measurements of the high-temperature dependence of magnetic susceptibility.

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Magnetic Properties of Rocks Handbook of Physical

Magnetic susceptibility of magnetite and of ferromagnetic minerals.—Magnetite, by reason of its relatively high magnetic susceptibility and wide distribution, is easily the most important ferromagnetic mineral. Indeed, the value of the magnetic susceptibility of a rock is generally determined solely by its contained magnetite.

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Clean utilization of high-iron red mud by suspension

Oct 01, 2020 The magnetization of the HIRM was measured using a VSM, then the specific magnetic susceptibility was calculate using Eq. . The results, displayed in Fig. 1, show that the magnetization and the specific magnetic susceptibility of the sample behaves very differently with changing external magnetic field intensity.The magnetization of the high-iron red mud increases nearly linearly with the

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Paramagnetic and ferromagnetic anisotropy of magnetic

Jun 01, 2004 The high-field slope, calculated above the magnetic saturation, isolates the paramagnetic susceptibility, and the directional set therefore isolates the paramagnetic component of the bulk AMS. This paramagnetic component is carried primarily by the ferromagnesian silicates, in this case mainly biotite.

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