Ceramic Foundry Sand, technically named as “Fused Ceramic Sand for Foundry”, also named as ceramsite, is good spherical grain shape which is made from calcined bauxite. Its main content is aluminum oxide, and it is processed by melting, blowing, sieving and blending. Ceramic sand, has much better properties than that of silica sand to gain a better performance in foundry. It has high refractoriness, stable inert characteristics, excellent flowability, intrinsic hardness and wear resistance.
| SPEC. | AFS30 | AFS40 | AFS50 | AFS60 | AFS65 | AFS75 | AFS100 | AFS125 | AFS150 | |
| MESH | MICRON | |||||||||
| 18 | 850 | ≤5 | ||||||||
| 26 | 600 | 15-30 | ≤5 | ≤5 | ||||||
| 36 | 425 | 30-50 | 20-40 | 10-25 | ≤10 | ≤5 | ||||
| 50 | 300 | 20-35 | 25-40 | 25-35 | 15-35 | 10-25 | ≤10 | |||
| 70 | 212 | ≤10 | 10-30 | 25-35 | 25-35 | 15-30 | 10-30 | ≤3 | ≤2 | |
| 100 | 150 | ≤5 | ≤10 | 5-25 | 25-35 | 25-40 | 25-45 | 10-30 | 0-20 | ≤5 |
| 140 | 106 | ≤5 | ≤10 | 5-20 | ≤25 | 20-40 | 35-55 | 30-50 | 5-25 | |
| 200 | 75 | ≤2 | ≤5 | ≤5 | ≤10 | 15-35 | 25-45 | 40-60 | ||
| 281 | 53 | ≤1 | ≤1 | ≤1 | ≤5 | ≤10 | 0-20 | 25-35 | ||
| PAN | PAN | ≤0.5 | ≤0.5 | ≤0.5 | ≤2 | ≤5 | ≤15 | |||
| AFS average finess range | 25-35 | 35-45 | 45-55 | 55-65 | 60-70 | 70-80 | 95-110 | 120-135 | 145-165 | |