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[China]
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Address: 10th & 11th Floors, No.6 Building, Central China Electronic Commerce Port, Daxue Road, Erqi District, ZhengZhou City, Henan Province, China
Contact name:Pika
Zhengzhou Rongsheng Refractory Co., Ltd. |
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High Quality Calcium Aluminate Cement From RS Group
High alumina refractory cement is made of high alumina bauxite and high purity limestone and then burned into cement through a large rotary kiln. Dipping, and finished by grinding, homogenization and other processes.
High alumina cement has excellent early strength, a wide range of application, and stable setting time, making it the first choice for refractory castables.
The raw materials of calcium aluminate cement CA-70/80 are high purity calcium materials and high pure alumina. The raw materials should be mixed according to suitable ratio. The raw material should be burned to partly fuse. After cooling, α-Al2O3 powder added into clinker, then ground to cement. The content of Al2O3 is usually controlled within 68% to 72%. The principal compounds of it are CA and CA2.
Product Description
| Product | 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 | |
Properties of High Alumina Refractory Cement
. Rapid-hardening, high strength,
. High refractoriness, high-temperature service performance,
. Good resistance to abrasion, high wear resistance,
. Stable hydrating capacity,
. Good anti-corrosion performance,
. High thermal shock stability.
