Characteristics of refractory cement
Refractory cement is a hydraulic cementitious material made of bauxite and limestone as the main raw materials, which is calcined into clinker with calcium aluminate as the main component and then ground into fine powder. Its refractoriness is not less than 1580°C, and it has the characteristics of high temperature resistance, chemical corrosion resistance, and high strength.
Rongsheng Technical Datas
| High Temperature Refractory Cement | ||||||
| CA-65 | CA-68 | CA-70 | CA-75 | CA-80 | ||
| Chemical Composition (%) | Al2O3 | 64-66 | 67-69 | 69-71 | 73-75 | 77-80 |
| CaO | 32-34 | 29-31 | 27-29 | 23-25 | 18-20 | |
| SiO2 | 1.8 | 1.2 | 0.3 | 0.3 | 0.3 | |
| Fe2O3 | 0.6 | 0.6 | 0.3 | 0.3 | 0.3 | |
| Specific Surface (cm2/g) | 4500 | 4500 | 5000 | 5500 | 7000 | |
| Setting time (h:min) | Initial setting (min) | 0:40 | 0:40 | 0:40 | 0:45 | 0:45 |
| Final Setting (min) | 8:00 | 8:00 | 10:00 | 10:00 | 10:00 | |
| Cold Modulus of Rupture (MPa) | 24 hour | 6.0min | 6.0min | 6.0min | 6.0min | 5.0min |
| 72 hour | 8.0min | 8.0min | 8.0min | 8.0min | 6.0min | |
| Cold Crushing Strength (Mpa) | 24hour | 45.0min | 45.0min | 45.0min | 45.0min | 35.0min |
| 72hour | 70.0min | 70.0min | 70.0min | 70.0min | 60.0min | |
| Refractoriness (°C) | 1680 | 1710 | 1730 | 1750 | 1770 | |
Main applications:
Steel industry: used to manufacture high-temperature equipment such as blast furnaces, hot blast furnaces, and heating furnaces.
Nonferrous metal industry: used to manufacture high-temperature equipment such as smelting furnaces and electrolytic cells.
Glass industry: used to manufacture refractory materials in melting furnaces.
Other high-temperature industrial fields: equipment and structures used in high-temperature environments such as ceramics, petrochemicals, and electricity.
