scholarly journals Optimization of a Magnetic Separator Air-Gap

1986 ◽  
Vol 2 (2) ◽  
pp. 97-113
Author(s):  
Kazimierz Adamiak
Keyword(s):  
Force Field ◽  
Magnetic Particles ◽  
Magnetic Force ◽  
Air Gap ◽  
Field Analysis ◽  
Magnetic Separator ◽  
Inverse Boundary ◽  
Force Field Analysis ◽  
Inverse Boundary Problem ◽  
Magnetic Force Field

The paper describes a method of optimization of a magnetic separator air-gap which serves to separate magnetic particles from volatile power plant dust. The method consists in seeking the air-gap dimensions, assuming that the shape of poles is known on the basis of magnetic force field analysis, or in seeking the shape of poles for the assumed force field distribution. In the second case the problem is reduced to solving a certain inverse boundary problem of the Dirichlet type.

scholarly journals RESEARCH OF MAGNETIC FIELD DISTRIBUTION IN THE WORKING AREA OF DISK SEPARATOR, TAKING INTO ACCOUNT AN INFLUENCE OF MATERIALS OF PERMANENT MAGNETS

2020 ◽  
Vol 1 ◽  
pp. 87-95
Author(s):  
Iryna Shvedchykova ◽  
Inna Melkonova ◽  
Julia Romanchenko
Keyword(s):  
Magnetic Field ◽  
Force Field ◽  
Magnetic Materials ◽  
Magnetic Force ◽  
Magnetic System ◽  
Magnetic Separator ◽  
Magnetic Systems ◽  
Mass Fractions ◽  
The Cost ◽  
Magnetic Force Field

Based on the results of a numerical-field analysis of the distribution of the magnetic force field in the working area of the disk magnetic separator, designed to clean bulk substances from ferromagnetic inclusions, the influence of the magnetic material of the poles of the magnetic system on the field distribution is determined. A consistent study of two magnetic systems assembled on the basis of magnetic materials of different classes is carried out. The finite element method implemented in the COMSOL Multiphysics software environment is used to calculate the distribution of magnetic induction in a disk magnetic separator with rare-earth and ferrite magnets. Due to the complexity of the spatial geometry of the force field in the working area of the disk magnetic separator, a three-dimensional model of the magnetic system is developed. A comparative analysis of the distribution of the magnetic force field in the working area of the disk separator with a highly coercive magnetic system and with a magnetic system based on ferrite blocks is carried out. As a result of the analysis, it is found that the indicators of the intensity and heterogeneity of the magnetic field for a highly coercive magnetic system significantly exceed the corresponding parameters of a ferrite magnetic system. It is proved that when choosing magnets for the magnetic system of a disk separator, preference should be given to highly coercive alloys, the magnetic properties of which significantly exceed the magnetic properties of ferrite magnets. To reduce the cost of the magnetic system of the disk separator, the use of a combined magnetic system assembled from magnetic materials of different classes is proposed. Studies of combined magnetic systems with various mass fractions of magnetic materials are done. The ratio of the mass fractions of magnets of various properties in the poles of the magnetic system is determined, at which sufficiently high magnetic characteristics are provided in the working area. It is shown that the presence of a ferrite fraction in the magnetic poles not only reduces the cost of the magnetic system of the separator, but also reduces the mass of the system. The tasks of further research are justified

Sharpening the Focus of Force Field Analysis

2013 ◽  
Vol 14 (1) ◽  
pp. 28-47 ◽  
Author(s):  
Donald James Swanson ◽  
Andrew Shawn Creed
Keyword(s):  
Force Field ◽  
Field Analysis ◽  
Force Field Analysis

The energetics of motivated cognition: A force-field analysis.

2012 ◽  
Vol 119 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Arie W. Kruglanski ◽  
Jocelyn J. Bélanger ◽  
Xiaoyan Chen ◽  
Catalina Köpetz ◽  
Antonio Pierro ◽  
...  
Keyword(s):  
Force Field ◽  
Field Analysis ◽  
Motivated Cognition ◽  
Force Field Analysis

Ferromagnetic Inserts for Magnetic Force Field Generation

2004 ◽  
Vol 40 (3) ◽  
pp. 1606-1609 ◽  
Author(s):  
O. Vincent-Viry ◽  
L. Quettier ◽  
J. Leveque ◽  
A. Mailfert ◽  
D. Chatain
Keyword(s):  
Force Field ◽  
Magnetic Force ◽  
Field Generation ◽  
Magnetic Force Field

Symmetry Coordinates and Tentative Force Field Analysis of a PMo12O40 Model with the Keggin Structure

1976 ◽  
Vol 31 (12) ◽  
pp. 1589-1600 ◽  
Author(s):  
Lennart Lyhamn ◽  
S. J. Cyvin ◽  
B. N. Cyvin ◽  
J. Brunvoll
Keyword(s):  
Experimental Data ◽  
Force Field ◽  
Force Constant ◽  
Raman Spectra ◽  
Vibrational Analysis ◽  
Field Analysis ◽  
Infrared And Raman Spectra ◽  
Symmetry Coordinates ◽  
Force Field Analysis ◽  
Complex Ion

Abstract A complete vibrational analysis is performed for the 53 atomic PMo12O40 model of Td symmetry. The symmetry coordinates are classified into those of (a) ligand vibrations, (b) framework-ligand couplings, (c) framework vibrations, and (d) interligand vibrations. Simple valence force fields are estimated, and the influence of inclusion of redundancies on the calculated frequencies and symmetry force constants is investigated. Comments are made on calculated symmetry force constant values up to 345 mdyne/Å. Vibrational frequencies are calculated for the Mo3O7 and Mo3O13 units and for the PMo12O403- complex ion. For the latter compound the calculated values are compared with experimental data from infrared and Raman spectra.

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