Description of Ceramic Sand:
Ceramsite foundry sand is kind of man-made spherical shape ceramic particles featured by high refractoriness, low thermal expansion. Ceramsite Foundry Sand provides a simple and efficient way in the foundry industry to improving the quality of the castings, reducing the production cost and avoiding environmental pollution so it is much better than silica sand. And it is also good substitution to Chromite sand and Zircon sand because of its lower price. At the present, Ceramsite Foundry Sand is acknowledged in the worldwide as the newest and the best ideal sand for the foundries and Ceramsite Foundry Sand has a very wide feasibility of applications for the future development.
Advantage of Our Ceramic Sand:
1. Solid Sphere: The shape of Ceramsite is spherical with smooth surface and less surface area and offering a very good flowability and filling ability. To compare with other sands else, less binder is used at the same mold strength and higher venting ability. It also offers the excellent collapsibility.
2. Lower thermal expansion rate: It makes the dimensions of castings better, less crack and defect and higher output.
3. Lower breakage rate: Ceramsite has a higher particle strength and a very lower breakage rate at the reclamation. It makes a better reclamations rate to reduce the waste sand and the pollution.
4. High refractoriness: The major chemistry is Al2O3 and SiO2, so mostly mullite and corundum phase in the Ceramsite which will make sure the high refractoriness and thermal stability. And PH value appears neutral. It is suitable for all kinds of metal and alloy castings.
Technical Parameter of Cerramic Foundry Sands:
| Main Chemical Component |
Al₂O₃≥53%, Fe₂O₃＜4%, TiO₂＜3%, SiO₂≤37% |
| Grain Shape |
Spherical |
| Angular Coefficient |
≤1.1 |
| Particle Size |
45μm -2000μm |
| Refractoriness |
≥1800℃ |
| Bulk Density |
1.45-1.6 g/cm3 |
| Thermal Expansion（RT-1200℃） |
4.5-6.5x10-6/k |
| Color |
Sand |
| PH |
6.6-7.3 |
| Mineralogical Composition |
Mullite + Corundum |
| Acid Cost |
＜1 ml/50g |
| L.O.I. |
＜0.1% |
The particle size distribution can be customized according your requirement.
|
Mesh
|
20 |
30 |
40 |
50 |
70 |
100 |
140 |
200 |
270 |
Pan |
AFS |
|
μm
|
850 |
600 |
425 |
300 |
212 |
150 |
106 |
75 |
53 |
Pan |
|
| Code |
20/40 |
15-40 |
30-55 |
15-35 |
≤5 |
|
|
|
|
|
|
20±5 |
| 30/50 |
≤1 |
25-35 |
35-50 |
15-25 |
≤10 |
≤1 |
|
|
|
|
30±5 |
| 40/70 |
|
≤5 |
20-30 |
40-50 |
15-25 |
≤8 |
≤1 |
|
|
|
43±3 |
| 70/40 |
|
≤5 |
15-25 |
40-50 |
20-30 |
≤10 |
≤2 |
|
|
|
46±3 |
| 50/100 |
|
|
≤5 |
25-35 |
35-50 |
15-25 |
≤6 |
≤1 |
|
|
50±3 |
| 100/50 |
|
|
≤5 |
15-25 |
35-50 |
25-35 |
≤10 |
≤1 |
|
|
55±3 |
| 70/140 |
|
|
|
≤5 |
25-35 |
35-50 |
8-15 |
≤5 |
≤1 |
|
65±4 |
| 140/70 |
|
|
|
≤5 |
15-35 |
35-50 |
20-25 |
≤8 |
≤2 |
|
70±5 |
| 100/200 |
|
|
|
|
≤10 |
20-35 |
35-50 |
15-20 |
≤10 |
≤2 |
110±5 |
Application of Our Ceramic Sands:
Our ceramic sand has been engineered specifically for foundries to provide the best performance in various types of castings.
Aluminum, gray and ductile iron, steel, copper, magnesium and other metals can be made using sand and most any binder system including phenolic urethanes, phenolic ester, furan, sodium silicate, bentonite clays, shell resins and alkyd oils.
