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Product Details:
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| Bulk Density: | 2.55-2.8g/cm3 | Refractoriness: | 1750min. |
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| Al2O3 Content: | 43-45% | SiO2 Content: | 50.5-52.5 |
| Fe2O3: | 1.0%max | Material: | Kaolin |
| High Light: | Casting Sand For Aluminum Smelting Industry,Grade A Casting Sand For Aluminum,Sintered Refractory Casting Sand |
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Grade A Sintered Refractory Casting Sand Used For Aluminum Smelting Industry
1. Mullite Sand Introduction
1. Our prodcts refractory foundry sands are made from mullite .Mullite is made of kaolin by high temperature sintering.
2. The density of mullite is generally greater than 2.5g/m3, the true specific gravity is 2.6g/cm3, the water content is less than 0.03%, and the fire resistance is greater than 1750 ℃. Under the condition of high temperature burning, its weight will be reduced by 0.3% and not more than 0.4%, which shows the stability of mullite's chemical properties. .
3. The chemical components of mullite are all chemical substances with strong fire resistance, and their properties are relatively stable. It mainly includes: alumina, silica, etc., the content of alumina is between 42% and 46%, and the content of silica is between 51-53%. The best raw ore make our foundry sands can keep relatively stable below 1750℃.
2. Mullite Sand Specifications
| Item/ Grade | Specifications | |||
| E-45 | E-44 | E-43 | E-42 | |
| Al2O3 % | 45-48 | 44-46 | 43-45 | 42-45 |
| Fe2O3 % | 0.8-1.2 | 1.2-1.5 | 1.5-2.0 | 2.0-3.0 |
| SiO2 % | 49-52 | 50-53 | 50-53 | 51-54 |
| Ti02 % | 0.8 | 0.9 | 1.0 | 1.2 |
| K2O+Na2O % | 0.3 | 0.4 | 0.4 | 0.5 |
| CaO+MgO % | 0.5 | 0.5 | 0.6 | 0.7 |
| Bulk density g/cm3(min) | 2.55 | 2.53 | 2.50 | 2.46 |
| Refractoriness °C (min) | 1770 | 1760 | 1740 | 1720 |
| Mullte Phase% (min) | 65 | 60 | 55 | 45 |
3. Mullite Sand General advantages
Ø Easy out of shell.
Ø No deformation and No reduced scale.
Ø Good brightness and Good finish.
3. Mullite Sand Characteristics
Ø High refractoriness.
Ø Aluminum content high, the iron content low.
Ø High volume density.
Ø Thermal expansion coefficients of small.
Ø Physicochemical stability.
Ø Fully calcined and Dust content low
Ø The specification standards.
4. Mullite Sand Particle sizes Available
Ø Size of sand: 8-16,16-30,30-60,30-80,60-80,80-120 (mesh):Used for investment casting.
Ø Size of powder: -200mesh,-270mesh,-325mesh: Used for investment casting and refractories.
Ø Size of particle: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-50mm:Used for refractories.
5. Mullite Sand Applications
The foundry sands are mainly used in precision investment casting,especially in reinforcement layer, gypsum filling V method molding and vacuum suction casting, as well as refractories for large, medium and small steel castings, widely used in machinery, aviation, weapons, metallurgy, petroleum and other industries.
Contact Person: Jason Chen
Tel: 86-18603794999
