General Introduction

Vertical High Gradient Magnetic Separator (VHGMS/HGMS) or Wet high intenstiy Magnetic Separator (WHIMS) are refering the same equipment as below. It is specially designed for weak magnetic ore benefication or non-magnetic ore purification. A well distributed background field is produced in processing area of WHIMS, no magnetic field omission, which is ideal to applied on the benefication of fine red ore with particle size of material -1.3mm (-200mesh takes 30%-100%) (Hematite,Limonite, Siderite), Manganese ore, Ilmenite, Wolframite etc, or the purification of the non-ferrite ore such as Quartz, Feldspar, Nepheline, and Kaolin.

The oil and water cooling VHGMS/HGMS combines magnetic force, pulsating slurry, and gravity discharge to separate magnetic and non-magnetic minerals continuously. It offers several advantages, such as a large processing capacity, high beneficiation efficiency and recovery rate, minimal thermal attenuation of the magnetic field, thorough discharge, and a high level of intelligence. With optional configuration - Online Cloud Platform Technology, it can achieve intelligent automatic operation. Compared with traditional VHGMS, Sortek WHIMS incorporates a series of new technologies and processes. These effectively enhance the operation efficiency, separation accuracy, and tailing discard rate while also reducing maintenance and operating costs.

Working Principle

There are full of matrix boxes along the rotating ring, when the separator is in operation, the ring rotates clockwise. The feed slurry from the feeding box flows into the magnet field and matrix boxes through gaps in the upper pole yoke. The matrix in the working zone is induced and magnetized. The magnetic particles are attracted from the slurry onto the surface of the matrix, and then brought to the top of the machine where the magnetic field is negligible, and are then flushed off the ring and falling into the concentrate box.

The non-magnetic particles pass through the matrix and enter the tailing box through gaps in the lower yoke under the combined action of slurry pulsation, gravity and hydrodynamic drag. The pulsating mechanism drives the rubber drum head on the tailing box so that it moves back and forth. As long as the slurry level is adjusted to be above the fixed level in the slurry level box.

As the direction of flush to discharge of the magnetic fractions is opposite to that of the feed, relative to each matrix stack, coarse particles can be flushed out without having to pass through the entire depth of the matrix. The slurry pulsation keep particles within the matrix in a loose suspended state all the time. The reverse flush and the slurry pulsation prevent matrix clogging. Additionally, the pulsation improves the quality of the concentrate with respect to grade.

These factors not only ensure the effective recovery of weakly magnetic particles as small as 0.01 mm, but also extend the size range of the feed material up to 1.2 mm, thus increasing the upper limit of the particle size to be treated.

Oil and Water Cooling Coil Illustration

Technical Advantages

Advanced Magnetic Circuit Design: Computer simulated magnetic field calculations to design a highly efficient magnetic circuit. This results in minimal magnetic energy loss, allowing the magnetic field strength to reach up to 1.7T.

Innovative Coil Winding Structure: The excitation coil features a layered stereo winding design. This enables the evaporative cooling medium to fully interact with every part of the coil, significantly enhancing the coil's heat - dissipation capacity. The structure ensures reliable operation.

Efficient Thermodynamic Cooling: The coil is cooled based on the thermodynamic phase - transition principle, offering high heat dissipation efficiency. The working temperature remains below 48°C, with a uniform temperature distribution and no local hot spots.

Fully Adaptive Cooling System: The automatic circulation of cooling system offers excellent automatic adaptation and self-regulation capabilities. The difference in magnetic fields between cold and hot states is minimal, and the coil's working temperature is immune to external environmental influences.

Extended Coil Lifespan: Operating at a low temperature rise over an extended period, the aging process of the coil is significantly slowed down. This prolongs the service life of the magnetic separator and ensures safe and reliable operation.

Sealed Coil for Harsh Environments: The coil is fully sealed, making it adaptable to a wide range of harsh working conditions.

High Separation Efficiency: High separation efficiency and broad adaptability to fluctuations in feed particle size, feed concentration, and feed grade.

Excellent Beneficiation Results: It offers a high rich ore ratio and a high recovery rate.

Working Site Presentation