Low breakage rate Ceramic Foundry Sand
20/40#,30/50#,40/70#,50/100#,70/140# For Sodium
Silicate Sand
1. Product Description of Ceramic Sand
Ceramsite is also called as Ceramic foundry sand.It selects the
high quality bauxite as main raw material,
then made into different size through the process of calcination,
electric melting, granulation, and sieving.
Ceramic sand has high refractoriness over 1790℃, it can help to reduce the sand adhering to the casting
parts,especially when used for steel castings & stainless steel
parts with higher temperature.So it is an
advanced substitute for quartz sand in casting industries.
2. Main Technical Data of Ceramic Sand
| Commodity | Main Chemical Index | Main Physical Index |
| Ceramic Sand | Al2O3 ≥70%
Fe2O3 ≤3%
SiO2≤18%
TiO2≤3.5%
K2O3+Na2O <1%
CaO+MgO<1%
L.O.I <0.3% | Shape: Round
Color:Gray Brown
Refractoriness:≥1790 ℃
Bulk Density:1.9-2.1g/cm3
True Gravity:3.30g/cm3
Coefficient of Expansion:0.13%
(Heat 10Minutes under 2000℃)
PH:7-8
Thermal Conductivity:0.698W/m*K
(Heated Surface 800℃)
Angle coefficient:≤1.1
(Very similar to spherical)
Water Content≤0.1%
Mud Content≤0.1%
Average Coefficient of Linear Expansion≤6*10-6℃-1 |
| Grit Size | 14#,20#,30#,40#,50#,70#,100#,140#,200#,270# |
| Section Sand | 14/20,20/30,20/40,20/50,30/50,40/50,40/70,50/100 |
| 50/140,70/140,70/200,100/200,140/270,200/270 |
| Remark | Special specification can be customized |
3. Main Features of Ceramic Sand
Solid Sphere: Ceramsite has solid spherical shape with smooth
surface,it will provide good flowability and
filling ability.
Low thermal expansion rate: it will guarantee the casting size,
provide less crack and defect and improve
the output.
Low breakage rate: ceramsite has higher density and lower breakage
rate at the reclaimation,which provide
one better reclaimation rate,then reduce the production cost.
High refractoriness: ceramsite contains Min. 70% Al2O3,which
provide good refractory performance,then
suitable for all kinds of metal and alloy castings.
4. Main Applications & corresponding specification:
Lost Foam casting: Ceramsite 14#,20#,30#,14/20#,20/30#,20/40#
Investment casting: Ceramsite 100/200#
Sodium silicate sand:20/40#,30/50#,40/70#,50/100#,70/140#
Casting coating: 200#,270#,200/270#
Drainage sand: 20/30#,20/40#
Alloy surface treatment:40#,140#
Resin sand:40/70#,50/100#,50/140#,70/140#,100/200#
5. How to store the ceramic sand?
Use strong moisture-proof package;
Keep it in clean, dry and ventilated place;
Keep away from dust.
6. Why Ceramic Sand can replace the chromium sand as drainage sand?
Ceramic sand has lower bulk density and price compared with
chromium sand,it will reduce the sand
consumption and final production cost.
Ceramic sand also has higher cast ratio,it will effectively reduce
the strength of sintering layer,it is helpfu
to drain;
Its lower thermal expansion rate can reduce the expansion rate and
improve the yield rate.
