What is magnetic separation?
Magnetic separation is a method based on the difference of mineral magnetic, bearing different forces in the magnetic field of magnetic separator, resulting in material separation. Magnetic separation is one of the most reliable ways to remove unwanted ferrous metals during the processing of raw materials and can also be useful in the process of mining iron.
What industries is magnetic separation used in?
There are many industries which use magnetic separation. These include:
- Aggregate and mining
- Food processing
- Textile industries
- Pharmaceutical and chemical industries
- Wood processing
- Pallet recycling
- Tire recycling
What types of magnetic separation equipment are there?
The range of magnetic separation equipment commonly used in the mining and mineral concentration industry is divided into two categories. These include low-intensity and high-intensity mineral separators.
Low-intensity separators include overband magnets, suspension magnets and magnetic conveyor pulleys. These are used primarily for the extraction of tramp iron mined product. It provides a cleaner, metal-free product stream and ensures protection to any valuable downstream processing equipment. On the other hand, high-intensity separators are suitable for either wet or dry processes and are used for the concentration of finely sized paramagnetic minerals.
How does magnetic separation work?
Minerals fall into 3 categories including ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic minerals are magnetic and therefore can be easily separated from other minerals with a magnet. Magnetic separation is used to separate minerals based on their magnetic properties. The magnetic separator used usually consists of a large electromagnet through which mineral mixtures can be passed on a metal trough which is divided near the exit.