high pure cordierite raw materials

High pure cordierite raw material:
It is burnt with the imported raw material wet composition in the high temperature tunnel kiln with extremely small temperature difference. The cordierite has high purity, small heat expansion factor, and good performance. Cordierite technical parameter
Loss in burning SiO3 TiO2 AL2O3 Fe2O3 MgO CaO Na2O K2O
0.28% 49.85% 0.31% 35.9% 0.54% 12.3% 0.47% 0.02% 0.28%
2. X- ray diffraction anaysis:
cordierite:95％　non-crystalloid:4％
3、Heat expansion factor:website: ,
email:
20－900℃ 　1.8?0-6℃