| Brand Name: | kangqian |
|---|---|
| Model Number: | AFS75-85 |
| SiC Content (%): | 0 |
| CrO Content (%): | 0 |
| Refractoriness (Degree): | 1770°< Refractoriness< 2000° |
| CaO Content (%): | 0.5max |
| MgO Content (%): | 0.5max |
| Al2O3 Content (%): | 70-85 |
| SiO2 Content (%): | 5-20 |
| Material: | Alumina Block |
| Shape: | Ball |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
amsite Sand
Chemical Composition
|
SiO2 |
5– 15% |
|
Al2O3 |
70–85% |
|
Fe2O3 |
5%min |
|
TiO2 |
5%min |
|
MgO |
0.5%min |
|
K2O |
0.5%min |
|
CaO |
0.5%min |
Physical Character
|
Grain shape |
Perfect round ball shape |
|
Color |
Brown-Black |
|
Angle index |
1 .1 max |
|
Size rang |
0.053-3.36mm |
|
Loose Bulk Density |
1.9 – 2.1 g/cm3 |
|
Refractoriness |
2050°C |
|
Liner thermal expansion |
(200°C - 1000°C) 5×10-6/°C |
Main Advantage
|
1 |
Stabe quality on the chemical composition |
|
2 |
Perfect grain round shape and various grain sizes |
|
3 |
High gas permeability |
|
4 |
High temperature resistance |
|
5 |
Good break down and fast curing and good release |
|
6 |
Perfectly round shape with higher fluidity improves fill-in efficiency while reducing the resin level |
|
7 |
Smooth surface of spherical shape greatly improves collapsibility after pouring |
|
8 |
Very low thermal expansion ensures fewer or no casting defects such as veining and deformation |
|
9 |
Excellent thermal conductivity and heat absorption capacity close to that of Zircon |
|
10 |
Superior refractory equivalent to Zircon and Chromites |
Applications
|
1 |
Widely used in foundry technique like resin-bonded sand, sodium silicate sand, and clay- bonded sand for sand core and casting mould making |
|
2 |
Replace chromite sand and widely used in sand core making like jacket core, oil duct core, tappet core of engine. |
|
3 |
Replace chromite sand for steel casting facing sand and sub-layer of molding sand (backing sand). |
|
4 |
Widely used as dry sand and sand box for EPC process and V method of casting processes. |
|
5 |
Widely used as the main raw materials of advanced refractory products (Ladle drainage sand,gravity casting material, casting coating, etc.). |
|
6 |
Widely used as cleaning sand for copper and aluminum alloy castings. |
PS:The main performance comparison of ceramsite sand,Chromite sand and Zircon Sand
|
|
Ceramsite Sand |
Zircon Sand |
Chromite Sand |
|
PH Value |
7.65 |
4.56 |
8.24 |
|
Bulk Density(g/cm3) |
1.95-2.05 |
2.9-3.1 |
2.6-2.7 |
|
True Density(g/cm3) |
3.4 |
4.4-4.71 |
3.9-4.8 |
|
Shape |
spherical |
Irregular |
Irregular |
|
Binder into water(Waterglass +CO2 Hardness) |
3-4% |
7-8% |
7-8% |

