Magnetic Separation in the Ceramic Industry

In the ceramic industry, magnetic separation is a simple and effective way to detect and remove minerals and fine iron that cause problems in ceramic production lines. Some of the raw materials used in ceramic production (silica sand, ball clay, kaolin, and feldspar) may contain hematite, chromite, iron-stained quartz, and mica minerals such as muscovite or biotite.

In addition, free iron particles generated by the wear of machinery and equipment during the production process may also enter the system. It is of great importance for ceramic producers to understand the magnetic properties of the minerals they work with and how these minerals respond within a magnetic field.

This allows them to better understand how magnetic minerals can be separated during the magnetic separation design process.

Classification of Mineral Behavior in a Magnetic Field

The behavior of minerals in a magnetic field is classified into five different categories:

• Diamagnetic

• Paramagnetic

• Ferromagnetic

• Antiferromagnetic

• Ferrimagnetic

• 
  

These classifications help determine whether a mineral can be separated using magnetic separators.

Material Classification After Magnetic Separation

After the magnetic separation process is completed, materials are divided into three different groups:

• Non-magnetic materials

• Middlings (materials exhibiting moderate magnetic properties)

• Magnetic minerals

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