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Calcined Bauxite Sand For Refractory Brick And Casting

SEPPE Bauxite Sand is a special foundry moulding sand for iron and steel casting. It's spherical particle shape guarantees a very good flowability. Due to the special surface structure the binder/hardener demand compared to other moulding sands can be reduced. Bauxite sand has a very good refractoriness of up to 1800 degree Celsius and a low thermal expansion.
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  • 0-1mm, 1-3mm, 3-5mm, 5-8mm


  • 25083000

SEPPE Bauxite Sand
Grade Al2O3 Fe2O3 TiO2


K2O+Na2O Bulk Density(g/cm3) Refractoriness(℃) Ignition Loss
I ≥85 ≤1.0 ≤4.0 ≤0.8 ≤0.5 >3.5 ≥1800 ≤0.5
II  ≥80 ≤1.5 ≤5.0 ≤1.0 ≤0.7 >3.2 ≥1750 ≤0.5
III ≥75 ≤2.0 ≤5.0 ≤1.0 ≤0.8 >3.0 ≥1700 ≤0.5

SEPPE Bauxite Sand Used for Foundry and Casting:

1. Artificial bauxite sand has small thermal expansion coefficient, good performance as zircon sand;

2. Spherical appearance with good liquidity and better ventilation;

3. Smooth surface with compact structure, uniformly covered of adhesive;

4. It is a neutral materials that can be used with acids, bases or binders;

5. Can be recycled, cost-effective;

6. Price is only 25-50% of chromite sand and zircon sand. Meanwhile, sand is spherical with small surface area, so the added amount of the resin can be reduced by 30-50% and the added amount of sodium silicate ≤4%; and reducing casting defects caused by the binder and improving the output of castings;

7. High refractoriness, easy collapsing;

8. The fire resistance of mullite in the bauxite sand is much better than other sintered products;

9. Good thermal conductivity and stability without cracks;

10. Wide applications. Used for polishing and cleaning of resin sand, sodium silicate sand, clay sand, EPC, investment casting, copper and aluminum.

SEPPE Bauxite Sand Features & advantages 

1. Lower thermal expansion rate and thermal conductivity: It is just this characteristic that makes the 

foundry more precisely, less cracking and high output. Improve foundry quality. 

2. Lower cleavage breakage rate: It has high density and has very low cleavage breakage rate. Easily 

reclaimed that makes it more protect environment for the less sand powder occurred.  

3. High refractoriness and service temperature: Major element is Al2O3 that has very good refractoriness.

bauxite aggregate 3-5mm


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