A Preliminary Investigation into Separating Performance and Magnetic Field Characteristic Analysis Based on a Novel Matrix

The matrix is the agglomeration carrier of magnetic mineral particles in high-gradient magnetic separation (HGMS). Its structural parameters have a great influence on the distribution of the magnetic field in the separation space, and therefore affect the separation effect. This paper introduces a n...

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Bibliographic Details
Published in:Minerals (Basel) 2018-03, Vol.8 (3), p.94
Main Authors: Li, Wenbo, Han, Yuexin, Xu, Ruiqing, Gong, Enpu
Format: Article
Language:English
Subjects:
a novel matrix
Columns (structural)
Curvature
Fluidity
Haematite
Hematite
high gradient magnetic separation
horizontal magnetic field orientation
Inhomogeneity
Magnetic field
Magnetic fields
Magnetic induction
Magnetic properties
Magnetic separation
Mine tailings
Minerals
Numerical analysis
Parameters
Plates (structural members)
Separation
Slurries
weakly magnetic particles
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Summary:The matrix is the agglomeration carrier of magnetic mineral particles in high-gradient magnetic separation (HGMS). Its structural parameters have a great influence on the distribution of the magnetic field in the separation space, and therefore affect the separation effect. This paper introduces a novel matrix called a screw thread rod matrix, which has the dual advantages of the rod matrix and the grooved magnetic plate, i.e., the advantages of better slurry fluidity through the matrix and higher magnetic field gradient at the sharp corners. This research on the novel matrix was performed from the following three aspects: the description of components of the matrix, the effect of structural parameters of the matrix on separation performance of fine hematite ore tailings in Northeast China, and the numerical analysis of the magnetic induction properties of different kinds of magnetic matrices based on three-dimensional structural characteristics. Compared with the smooth rod matrix, the proposed screw thread rod matrix enhances the inhomogeneity of the axial magnetic induction intensity on the surface of the matrix. Accordingly, the recovery of fine-grained iron minerals is improved through the resulting combined effect of the radial curvature of the rod and the inhomogeneous magnetic field in the axial direction. Furthermore, the best moderate distance between equidistant ring-shaped bulges (ERB) as well as the best column gap between adjacent rod elements were determined, respectively.
ISSN:2075-163X
2075-163X
DOI:10.3390/min8030094