casting sand refractory material
ceramsite foundry sand 10-30 mesh casting sand cast material
Ceramsite sand
1、Product Introduction
Ceramsiteis a kind of refractory particle with diameter of 0.020mm~2.00mm, mainly made of Al2O3·SiO2. It is ball-shaped
particle made from fine bauxite ,which is fused in high-temperature electric-arc furnace and sprayed to ball shape.
2、Features of Ceramsite
- Perfectly round shape with higher fluidity improves fill-in efficiency while reducing the resin level
- Smooth surface of spherical shape greatly improves collapsibility after pouring
- Low gas evolution and high permeability ensures fewer or no defects
- High refractoriness and little thermal expansion ensures no burn-on and deformation
- Artificial sand ensures stable chemical and physical properties
- Almost neutral PH value allows both acid and basic binder.
- High durability ensures high reusability.
3、Physical and Chemical Properties of Ceramsite
|
tem |
Index |
Item |
Index(%) |
|
Bulk Density(g/ cm³) |
1.79-1.95 |
Al2O3 |
>75% |
|
Apparent Porosity(%) |
<10 |
SiO2 |
15.32-21.6 |
|
Ambient Compressive Strength (Mpa) |
46 |
Fe2O3 |
1.5-3.0 |
|
Refractoriness (°C) |
>1800 |
MgO |
0.23-0.7 |
|
Refractoriness Under Load (°C) |
1720 |
CaO |
0.16-1.5 |
|
Thermal Expansion Rate%(10 minutes under 1000 °C)) |
0.13 |
TiO2 |
1.99-2.71 |
4、Applications of Ceramsite
- Used in all types of foundry technique like resin-bonded sand, sodium silicate sand, and clay-bonded sand.
- As core sand for making like jacket core, oil duct core and tappet core of engine.
- Excellent replacement of chromite sand
- As dry sand of sand box for EPC process and V method of casting process.
