Fused Magnesia
The fused magnesia is made from magnesite ore after purification by electrofusion. It has the characteristics of a complete structure, good chemical stability, and high-temperature resistance. It is a high-grade alkaline refractory. Used in metallurgy, building materials, chemical industry, national defense, scientific research, medical equipment, household electrical, and other industries.
Additional information
Product Details
1, General information
Appearance: crystal or white powder
Molecular formula: MgO
Molecular weight: 40.3
CAS No.: 1309-48-4
EC No.: 215-171-9
Melting point: 2852 ℃
Boiling point: 3600℃
Re-sintering temperature 1650℃
Product temperature resistance 2200℃
2, Application
Magnesia is one of the most important raw materials for refractory materials and is used to manufacture various magnesia bricks, magnesia alumina bricks, ramming materials, and repairing materials. Magnesia containing more impurities is used to pave the bottom of steelmaking furnaces, etc.
Fused magnesia is prepared by melting selected special A-grade natural magnesite or high-purity light-burned magnesia particles in an electric arc furnace. The product has the characteristics of high purity, large crystal grains, compact structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material, and it is also used to make high-grade magnesia bricks, magnesia carbon bricks, and unshaped refractory materials.
3, Specifications
| ITEM | Typical Data of Magnesium Oxide | |||||
| FM98A | FM97A | FM96A | FM98B | FM97B | FM96B | |
| MgO,% ≥ | 98 | 97 | 96 | 97.5 | 96.5 | 95.5 |
| CaO,% ≤ | 0.7 | 1.2 | 1.6 | 1.5 | 1.4 | 2.0 |
| Al203 ,% ≤ | 0.2 | 0.2 | 0.3 | 0.2 | 0.2 | 0.2 |
| SiO2,% ≤ | 0.35 | 0.6 | 0.8 | 0.7 | 0.8 | 1.0 |
| lg-Log,% ≤ | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Bulk density (g/cm3) | 3.50 | 3.50 | 3.45 | 3.50 | 3.50 | 3.45 |
4, Package
– 20kg moisture-proof PP bags with inner PE bags.
– 1000kg moisture-proof big bags with inner PE bags.
5, Storage
Protect packaging from damage and keep them well closed. Store in a cool, well–ventilated, dry and shaded area.
8, advantage
- Factory direct supply, reduce intermediate links
- The retention samples exceed the shelf life by one year
- Free sample
