Mullite Sand

Mullite sand / powder, produced through high temperature calcined process, is a kind of high quality casting sand made from the of high quality Kaolin mines. The main crystalline phase is mullite . It has good performance on lower thermal expansion rate, uniform expansion , better anti vibration, good hardness etc. It is very good to be used for precision casting. 

Characteristic:
1. High refractor, Lower thermal expansion rate;
2. Good thermal and chemical stability; 
3. Good grain shape, uniform particle size distribution ;