Calcium Aluminate Cemet A70,High Alumina Cement CA70,Refractory Cement:
High Alumina Cement CA70 is a manufactured commidity with high quality raw materials limestone and bauxite.The raw materials should be mixed according to suitable ratio,then burned to partly fused,after cooling,the clinkers are ground into cement CA70.
Application:
CA70 cement is used in making bulk refractory material,refractory castables and fire brick.And widely used for making various furnaces refractories in metallurgical industry,chemical industry,petroleum industry,electrical industry,machinery industry,building materials industry.It is also used in project of emergency repairing and emergency construction as well as chemical building materials for special using.
We can offer high alumina cement with different fineness as per the customers' requirements.
Technical Data:
| Items | CA60 | CA70 | CA80 |
| Al2O3% | 58.0----65.0 | ≥68 | 78--81 |
| CaO% | 17.0----25.0 | 20--25 | 20--25 |
| SiO2% | 5.0----8.0 | ≤1.0 | ≤2.0 |
| Fe2O3% | 1.5----2.5 | ≤0.7 | ≤0.5 |
| R2O% | < 0.4 | ≤0.4 | ≤0.4 |
| Setting time | Initial set | ≥ 60min | ≥30 | ≥30 |
| Final set | ≤ 18h | ≤360 | ≤360 |
| Flexural strength(Mpa) | 1 day | 2.5 | 5.0 | 5.0 |
| 3 days | 5.0 | 6.0 | 6.0 |
| 28 days | 10.0 | - | - |
| Compressive strength(Mpa) | 1 day | 20 | 30 | 45 |
| 3 days | 45 | 40 | 55 |
| 28 days | 85 | - | - |
| Fineness | Residue on Sieve | ≤ 5.0 | ≤3.0(180mesh)
3.0--5.0(325mesh) | ≤3.0(180mesh)
3.0--5.0(325mesh) |
| Specific Area(g/m2) | 350----450 | 450--600 | 450--600 |
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