Magnesium Oxide (MgO) for silicon steel applications is a high-purity and carefully controlled material specifically designed for use in the production of grain-oriented (GO) and non-grain-oriented (NGO) electrical steel. It plays a critical role as an insulating and annealing separator during the high-temperature annealing process.

Our magnesium oxide is produced through optimized calcination and milling processes to ensure stable reactivity, uniform particle size distribution, and excellent coating performance, meeting the stringent requirements of the silicon steel industry.

Key Functions in Silicon Steel Production

• Acts as an annealing separator, preventing sheet adhesion during high-temperature annealing

• Reacts with the steel surface to form a uniform and stable insulating layer

• Contributes to improved magnetic properties and surface insulation resistance

• Ensures consistent coating behavior and clean strip separation

Product Advantages

• High MgO purity with low impurity levels (CaO, SiO₂, Fe₂O₃ strictly controlled)

• Optimized activity suitable for high-temperature annealing conditions

• Fine and uniform particle size for excellent slurry stability and coating uniformity

• Good dispersibility and adhesion on steel surfaces

• Stable batch-to-batch quality for continuous industrial production

Typical Applications

• Grain-oriented silicon steel (GO electrical steel)

• Non-grain-oriented silicon steel (NGO electrical steel)

• High-grade transformer core steel

• Motor and generator laminations

Packaging and Supply

Available in 25 kg paper bags, 1,000 kg jumbo bags, or customized packaging upon request. Consistent quality control and reliable supply ensure suitability for long-term cooperation with silicon steel manufacturers.