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Calcium Alumina Refractory Cement
Our calcium alumina refractory cement is sintered from industrial alumina and alpha alumina powder in a high temperature furnace. It features quick setting properties, high refractoriness, and high bending and compressive strength.
This material is fused from a mixture of alumina powder and a high purity silica sand in 3-phase electric arc furnace at a high temperature. It is characterized by its high refractoriness, low creep properties and low contaminant. It is widely used in refractory and metallurgical industries. It is available in various grades as per requested.
Availability| CHEMICAL & PHYSICAL ANALYSIS | PRODUCT GRADE | |||
| A - 70 | A - 75 | A - 80 | A - 90 | |
| Al2O3 (%) | 70.00 min. | 75.00 min. | 80.00 min | 90.00 min. |
| CaO (%) | 25.00 min. | 20.00 min. | 15.00 min. | 10.00 min. |
| SiO2 (%) | 0.70 max. | 0.50 max. | 0.50 max. | 0.30 min. |
| Fe2O3 (%) | 0.50 max. | 0.50 max. | 0.50 max. | 0.30 max. |
| Initial Setting Time (minutes) | 30.00 min. | 30.00 min. | 30.00 min.. | 30.00 min. |
| Final Setting Time (Minutes) | 240.00 max. | 300.00 max. | 360.00 max. | 420.00 max. |
| Bending Strength (Kg/cm2) - 24 hrs | 50.00 min. | 45.00 min. | 40.00 min. | 30.00 min. |
| Bending Strength (Kg/cm2) - 72 hrs | 60.00 min. | 55.00 min. | 50.00 min. | 40.00 min. |
| Compressive Strength (Ks/cm2) - 24 hrs | 300.00 min. | 250.00 min. | 250.00 min. | 150.00 min. |
| Compressive Strength (Ks/cm2) - 72 hrs. | 400.00 min. | 350.00 min. | 300.00 min. | 200.00 min. |
| Refractorness (C degree) | 1650 | 1700 | 1750 | 1800 |
| Particle Sizes (90.00% min.) | 325 mesh | 325 mesh | 325 mesh | 325 mesh |
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