Ceramsite

Ceramic sand It is a kind of man-made ceramic grit , mainly having two kinds of applications: one is made for applications in the foundry metal casting as an alternative to silica and chromite sand. Another is used in the hydraulic fracturing process of natural gas andoil wells to increase their productivity of valuable natural resources. For Casting Application It has strong and durable characters for casting aoolications and is ideal for reclamation, reducing the waste and recharge quantity and improving dimensional accuracy of cast parts, reducing expansionrelated defeats. Technical Data Chemical composition Al2O3≥70% Fe2O3≤5%(2%) TiO2: 2.5-5% SiO2: 8-20% Granular shape Ball type Angel factor≤1.1 Bulk density 1.95-2.05g/cm3 Refractory ≥1820°C Thermal expansion rate 0.13%(10minutes, heated 1000°C) 14 18 26 36 50 70 100 140 200 281 pan 1180 850 600 425 300 212 150 106 75 53 Pan AFS:20 ≤5 10-30 30-40 15-35 ≤5 AFS:30 ≤5 10-30 30-50 15-35 ≤10 ≤5 25-35 AFS:40 ≤5 0-20 20-40 20-40 10-30 ≤10 ≤2 35-45 AFS:60 ≤10 10-30 30-50 15-35 0-20 ≤5 55-65 AFS:75 ≤10 5-30 25-45 20-40 ≤10 ≤5 75-85 AFS:100 ≤3 10-30 35-55 15-35 ≤10 ≤2 105-115 AFS:125 ≤2 0-20 30-50 25-45 0-20 ≤5 125-135 AFS:150 ≤5 5-25 40-60 25-40 ≤15 160-170