Something You Should Know About Magnetic Drum Separator

Introduction to Magnetic Drum Separator

Wet drum permanent magnetic separator is suitable for mines, coal preparation plants, etc. It uses the weak wet magnetic field to sort out the strong magnetic ore or eliminate the strong magnetic minerals mixed in with nonmagnetic minerals. Magnetic drum separator is widely used in iron ore separating the factory. A magnetic drum separator is suitable for high-intensity magnetic minerals.

Generally, wet magnetic separators can be divided into three types according to the configuration of the separator tank, including the downstream wet magnetic separator, half countercurrent magnetic separator, and countercurrent magnetic separator.

Working Principle of Counter-Current Wet Magnetic Separator

Fig. Magnetic Drum Separator

This wet magnetic drum separator is based on the different magnetic susceptibility between the ore minerals, and mineral separation by magnetic force.

When the slurry is into the sorting area of the wet magnetic separator, due to different magnetic susceptibility, under the magnetic force, the magnetic particles are adsorbed on the cylinder surface of the wet magnetic separator, with the cylinder rotation to the concentrate port of discharge, then from the magnetic system into the concentrate tank by concentrate rinse water. Gangue and weak magnetic minerals cannot be attracted by the magnetic force, under the slurry flow force in the tank, they gravity into tailings discharge pipe in the reverse direction of the cylinder rotating.

Types of Magnetic Drum Separators

Magnetic drum separators can be categorized by magnetic field strength (low, medium, and high intensity), by separation medium (dry or wet), and by magnetic source (permanent or electromagnetic).

Dry high-intensity separators are mainly used for coarse particle separation and have evolved with rare earth magnets to offer strong magnetic forces in a compact design. Dry low-intensity separators are suitable for removing iron debris or enriching strongly magnetic minerals, especially in pre-concentration stages before grinding.

Wet low-intensity separators, especially drum types, are widely used to recover media like magnetite and enrich magnetic ores. Their magnetic configurations—radial or axial—enhance either recovery or concentrate purity.

Wet high-intensity and high-gradient separators handle fine, weakly magnetic materials and are commonly used in kaolin purification and iron ore beneficiation.

Superconducting magnetic separators, though not yet widespread, offer potential for energy savings and enhanced performance in processing ultra-fine or weakly magnetic particles. As technology advances, magnetic separation is trending toward higher efficiency, automation, and broader application.

Magnetic Drum Separator Applications

Magnetic drum separator/wet magnetic separator is used for wet magnetic separation of magnetite, pyrite, titanic iron, etc. with a size no more than 3mm. It is also often used to get rid of iron content in coal, nonmetal materials, and building materials. They are:

l  For primary rough dressings and refused tails, increasing recovery rate and reducing the load of the second stage grinding.

l  The concentration of ferromagnetic minerals increases ore grades and recovery rates.

l  Used before a High Magnetism Separator to remove ferromagnetic minerals from ore and prevent magnetic clogging.

l  Removing iron from non-magnetic minerals or materials.

l  Recovering iron from river and sea sand.

l  Removing iron from the wet slurry.

Features and Benefits of Magnetic Drum Separator

1.  High-Performance Magnetic System

The separator utilizes high-quality ferrite materials or a composite of ferrite and rare earth magnets. The magnetic field strength on the drum surface ranges from 100 to 600 mT, ensuring effective separation performance.

2.  Protected Magnetic Assembly

The magnetic system is housed inside the drum and does not come into direct contact with materials. This design helps protect the magnets from wear and prolongs their service life.

3.  Advanced Electrical Control

Equipped with advanced electrical control technology, the system offers user-friendly operation, improves production efficiency, and reduces operator workload.

4.  Strong and Adjustable Magnetic Field

With a magnetic field strength of up to 2.2 Tesla and a high magnetic field gradient, the system allows for flexible adjustment of magnetic intensity to suit various material requirements.

5.  Low Operating Costs

The separator is designed for easy installation, low maintenance needs, and minimal operating expenses, making it a cost-effective solution for industrial separation tasks.

Conclusion

Thank you for reading our article and we hope it can help you to have a better understanding of magnetic drum separators. If you want to find out more about magnetic drum separators or other magnet products, we advise you to visit Stanford Magnets for more information.

As one of the leading magnet product suppliers across the world, Stanford Magnets has rich experience in the manufacture & sale of all kinds of magnet products and provides customers with high-quality rare earth permanent magnetic products such as neodymium magnets, and other non-rare earth permanent magnets at a very competitive price.