Aluminate cements, also called as calcium aluminate cements, its main raw materials are limestone & bauxite; normal production process is calcination; and we also can supply electro-fusion products. It’s CA Hydrates rapidly and sets normally, characteristic of rapid hardening and early strengthening.
Aluminate cements can resist a high temperature at which a relative high strength still remains its refractoriness increases with the content of CA2, therefore it is suitable to make refractory concrete as a binder. Depending on the refractory aggregate (fireclay, high alumina ) used, the refractory concrete made of the cement can be used below 1500℃.
Feature:
l Controllable workability and final service characteristics
l Flexibility in the choice of installation ranging from vibration casting, gunning, self-flow, pumping and shotcreting technologies
l Excellent stability to very high temperatures (greater than 1400°C)
l high mechanical strength
High durability with resistance to mechanical, thermal and corrosive wear.
Type of aluminate cement:CA-50、CA-60、CA-70、CA-80.
Chemical Component:
Type | Al2O3 | SiO2 | Fe2O3 | R2O (Na2O+0.658K2O) | S | Cl |
CA-50 | ≥50,＜60 | ≤8.0 | ≤2.5 | ≤0.40 | ≤0.1 | ≤0.1 |
CA-60 | ≥60,＜68 | ≤5.0 | ≤2.5 | |||
CA-70 | ≥68,＜77 | ≤1.0 | ≤2.5 | |||
CA-80 | ≥77 | ≤0.5 | ≤2.5 |
Physical Properties
Fineness:
BET | ≥300m2/kg |
screen residue of 0.045mm | ≤20% |
Setting Time:
Type | Initial Setting Time (min) | Final Setting Time (h) |
CA-50、CA-70、CA-80 | 30 | 6 |
CA-60 | 60 | 18 |
Strength of Cement Mortar:
Type | compressive strength，MPa | bending strength，MPa | ||||||
6h | 1d | 3d | 28d | 6h | 1d | 3d | 28d | |
CA-50 | 20 | 40 | 50 | - | 3.0 | 5.5 | 6.5 | - |
CA-60 | - | 20 | 45 | 85 | - | 2.5 | 5.0 | 10.0 |
CA-70 | - | 30 | 40 | - | - | 5.0 | 6.0 | - |
CA-80 | - | 25 | 30 | - | - | 4.0 | 5.0 | - |
