Effect of Matrix Shape on the Capture of Fine Weakly Magnetic Minerals in High-Gradient Magnetic Separation

2016 ◽  
Vol 52 (9) ◽  
pp. 1-11 ◽  
Author(s):  
Xiayu Zheng ◽  
Yuhua Wang ◽  
Dongfang Lu
Keyword(s):  
Magnetic Separation ◽  
Magnetic Minerals ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Weakly Magnetic ◽  
Matrix Shape

scholarly journals Magnetic Separation of Weakly Magnatic Copper Minerals

1989 ◽  
Vol 2 (4) ◽  
pp. 191-195
Author(s):  
J. N.M. Agricola ◽  
J. L. Top ◽  
A. F. Fort
Keyword(s):  
Magnetic Separation ◽  
Background Field ◽  
Magnetic Fraction ◽  
Magnetic Minerals ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Copper Mineral ◽  
Copper Concentrate ◽  
Mineral Particles ◽  
Weakly Magnetic

High Gradient Magnetic Separation of small (5-38 µm) weakly magnetic copper mineral particles from a copper concentrate and ore has been performed. In previous work coarser fractions of these minerals, bornite and chalcopyrite, were separated successfully. The recovery of the smaller particles in the magnetic fraction decreases but their grade increases compared to the results obtained on the larger particles. At a magnetic background field of 1.3 T the concentrate was upgraded from 72% bornite and chalcopyrite to 86% with a recovery of 82% and the ore from 16% magnetic minerals to 44% with a recovery of 72%.

Investigation of Combination of Variable Diameter Rod Elements in Rod Matrix on High Gradient Magnetic Separation Performance

2014 ◽  
Vol 1030-1032 ◽  
pp. 1193-1196 ◽  
Author(s):  
Li Ding ◽  
Lu Zheng Chen ◽  
Jian Wu Zeng
Keyword(s):  
Magnetic Separation ◽  
Magnetic Particles ◽  
Decisive Role ◽  
Matrix Analysis ◽  
Separation Performance ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Variable Diameter ◽  
Oxidized Iron ◽  
Weakly Magnetic

Rod matrix is effectively applied to separate fine weakly magnetic particles in pulsating high gradient magnetic separation (PHGMS), due to its reliable operation, simple combination and resistance to mechanical entrainment. They are now used to beneficiate oxidized iron ores, ilmenite, and wolframite, etc., and to purify wastewater. The combination of variable diameters rod elements in rod matrix plays a decisive role in recovery most of the different size fractions of magnetic particles, thus generating a significant influence on the performance of PHGMS. Combination of variable diameter rod elements in rod matrix on PHGMS is investigated in combination of 3 mm and 2 mm rod elements in rod matrix, by Slice-Matrix Analysis (SMA); it was found that the recovery of combinatorial rod matrix is higher than single diameter of matrix on PHGMS.

scholarly journals Selective Capture of Magnetic Wires to Particles in High Gradient Magnetic Separation

Minerals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 509 ◽  
Author(s):  
Zeng ◽  
Tong ◽  
Yi ◽  
Chen
Keyword(s):  
Magnetic Separation ◽  
Magnetic Induction ◽  
Actual Condition ◽  
Ideal Condition ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Feed Mode ◽  
Weakly Magnetic ◽  
Magnetic Wires ◽  
The Ideal

High gradient magnetic separation (HGMS) achieves effective separation to fine weakly magnetic minerals using numerous small magnetic wires in matrix, and its separation performance is inherently dependent on the capture characteristics of the wires. In this work, the selective capture of magnetic wire to particles in high gradient magnetic field was theoretically described and simulated using COMSOL Multiphysics. It was found that the capture trajectories of a small amount of particles under the ideal condition was significantly different from those of a large amount of particles under the actual condition, and non-magnetic particles would be much more easily entrained into magnetic deposits captured onto the wire surface under the actual condition than those under the ideal condition. These theoretical and simulated results were basically validated with the experimental magnetic capture to an ilmenite ore, and the wires in slow feed mode have achieved much higher capture selectivity than those in the fast feed mode. For instance, at the magnetic induction of 0.8 T, the TiO2 grade of magnetic deposits captured by 3 mm diameter wire in the slow feed model reached 36.78%, which is higher than 28.32% in the fast feed model. The selective capture difference between the fast and slow feed models increased with increase in the magnetic induction and with decrease in the pulsating frequency. This investigation contributes to improve HGMS performance in concentrating fine weakly magnetic ores.

PARTICULATE CAPTURE OF PLUTONIUM BY HIGH GRADIENT MAGNETIC SEPARATION WITH ADVANCED MATRICES

2001 ◽  
Vol 36 (5-6) ◽  
pp. 1335-1349 ◽  
Author(s):  
Laura A. Worl ◽  
David Devlin ◽  
Dallas Hill ◽  
Dennis Padilla ◽  
F. Coyne Prenger
Keyword(s):  
Magnetic Separation ◽  
High Gradient Magnetic Separation ◽  
High Gradient
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