Lightly calcined magnesium oxide, sometimes called caustic-calcined magnesium oxide, is produced by heating magnesium hydroxide at a lower temperature, around 700°C to 900°C. The process is similar to making light magnesium oxide, but it is carefully controlled to produce a slightly denser material with different properties.

Characteristics:

• Lightly calcined magnesium oxide has a medium bulk density, higher than light magnesium oxide but lower than heavy magnesium oxide.

• It has moderate reactivity and a specific surface area that is lower than light magnesium oxide.

• The material is suited for applications that require a balance between strength and reactivity.

Applications:

• Used in the production of magnesium-based cements, which are known for their quick-setting properties and high durability.

• Acts as an intermediate in the production of magnesium salts and other compounds.

• Also serves as a stabilizer in chemical reactions and processes.