Magnesium sand is a refractory material made by calcining magnesium hydroxide obtained by the reaction of magnesite or seawater with lime milk at high temperature. It can be used to make important raw materials for alkaline refractory materials, such as magnesia bricks, magnesia-alumina bricks, etc. Magnesium sand containing more impurities can be used to pave the bottom of steelmaking furnaces, etc.
Rongsheng Factory currently mainly produces the following magnesia sand: Fused Magnesia; Burned Magnesia; Large Crystal Fused Magnesia!
Price of magnesia sand shipped by Rongsheng varies depending on factors such as purity and particle size. If you have purchasing needs, please feel free to contact us!
1. Fused Magnesia(FM)
Fused magnesia is a type of refractory material that is produced by the electric arc melting of caustic calcined magnesia,dead burned magnesia or raw magnesite in furnaces at temperatures in excess of 2750℃.It has a high melting point,excellent thermal shock resistance,and good chemical stability, making it a popular choice for use in a variety of industrial applications such as steel making,cement manufacturing, and glass production.
Technical Parameters
| ltem | Unit | FM-95 | FM-96 | FM-97 | FM-98 |
| MgO | % | 95 | 96 | 97 | 98 |
| SiO₂ | % | 1.5 | 0.9 | 0.75 | 0.5 |
| CaO | % | 2.0 | 1.2 | 1.5 | 1.0 |
| Fe₂O | % | 1.0 | 0.8 | 0.8 | 0.5 |
| AL₂O₃ | % | 0.6 | 0.2 | 0.2 | 0.15 |
| L.0.1 | % | 0.3 | 0.2 | 0.2 | 0.1 |
| Bulk Density | g/cm³ | 3.40 | 3.45 | 3.47 | 3.50 |
| Grain Size | 0-1mm,1-3mm,3-5mm,200mesh, 0-40mm,10-50mm,10-150mm | ||||
Application
High performance MgO-C refractory bricks for steel industry;
Fired refractory bricks for cement and glass industry;
Heating elements industry.
2. Burned Magnesia
85%-92%Dead burned magnesia is mainly made of natural magnesite ore with 46%content,which is calcined by high temperature kiln at about 1400℃-1800℃ .
94%-98%Dead burned magnesia is made of natural super-grade magnesite ore.It is made by light burning,fine grinding,pressing balls and calcining in ultra-high temperature oil shaft kiln.
Technical Parameters
| Item | Unit | BM90 | BM92 | BM95 | BM97 |
| Mg0 | % | 90 | 92 | 95 | 97 |
| SiO₂ | % | 5.0 | 4.8 | 2.0 | 0.7 |
| CaO | % | 2.5 | 2.0 | 1.4 | 1.4 |
| Fe₂O₃ | % | 1.5 | 1.5 | 1.0 | 0.75 |
| Al₂O₃ | % | 1.5 | 1.2 | 0.3 | 0.2 |
| L.0.I | % | 0.50 | 0.50 | 0.15 | 0.13 |
| Bulk Density | g/cm³ | 3.10 | 3.14 | 3.18 | 3.28 |
| Grain Size | 0-1mm,0.5-1mm,1-3mm,1-5mm,3-5mm,200mesh, 1-15mm,3-15mm,5-15mm,3-8mm,5-10mm | ||||
Application
Burned magnesia is mainly used as raw material for making magnesia bricks and producing amorphous refractory materials.The finished products are used in steel making,electric furnace bottom and ramming furnace.
3. Large Crystal Fused Magnesia
Technical Parameters
| ltem | Unit | LC-98.5 | LC-98 | LC-97.5 | LC-97 |
| MgO | % | 98.5 | 98 | 97.5 | 97 |
| SiO₂ | % | 0.35 | 0.45 | 0.60 | 0.70 |
| CaO | % | 0.65 | 0.90 | 1.10 | 1.10 |
| Fe₂O₃ | % | 0.30 | 0.45 | 0.55 | 0.60 |
| Al₂O₃ | % | 0.06 | 0.08 | 0.15 | 0.25 |
| L.0.I | % | 0.06 | 0.08 | 0.10 | 0.10 |
| Bulk Density | g/cm³ | 3.52 | 3.50 | 3.46 | 3.46 |
| Grain Size | 0-1mm,1-3mm,3-5mm,200mesh, 0-40mm,10-50mm,10-150mm | ||||
Application
Large crystal fused magnesia is an important raw material for making high-grade magnesia carbon brick and amorphous refractory,and is also an excellent high temperature electrical insulation material.
