Material: Calcium aluminate
Paper bags: 25/50kg
Big bags: 1.0/1.5mt
Ronghua Refractory offers three standard cements, including CA50 (1300-1350℃), CA70 (1580-1560℃), CA80 (1750-1800℃). It is all called calcium aluminate cement. The main difference between them lies in the varying content of aluminum dioxide. Within these three types, each one is further subdivided. The main distinction is in the different chemical composition content. Please choose the appropriate types based on your needs.
Items | CA50-A600 | CA50-A700 | CA70 | CA80 | |||||
---|---|---|---|---|---|---|---|---|---|
Values | Typical | Limit | Typical | Limit | Typical | Limit | Typical | Limit | |
Chemical Composition | |||||||||
Al2O3 | % | 50-51 | ≥50 | 50-52 | ≥50 | 68-71 | ≥68 | 78-80 | ≥77 |
CaO | % | 32-35 | ≥32 | 32-35 | ≥32 | 28-30 | ≤30 | 18-20 | ≤20 |
SiO2 | % | 7.8-8.3 | ≤9.0 | 7.0-7.5 | ≤8.0 | 0.2-0.7 | ≤1.0 | 0.1-0.4 | ≤0.5 |
Fe2O3 | % | 1.5-2.5 | ≤3.0 | 1.5-2.5 | ≤3.0 | 0.1-0.5 | ≤0.7 | 0.1-0.4 | ≤0.5 |
Na2O+K2O | % | - | ≤0.5 | - | ≤0.5 | - | ≤0.4 | - | ≤0.4 |
Physical Properties | |||||||||
325 Mesh Residue | % | - | ≤20 | - | ≤15 | - | ≤8.0 | - | ≤5.0 |
Blaine Fineness (㎡/kg) | % | - | ≥320 | - | ≥350 | 380-420 | ≥350 | 450-500 | ≥450 |
Initial Setting Time | min | 50-120 | ≥30 | 50-120 | ≥30 | 180-240 | ≥150 | 150-210 | ≥30 |
Finish Setting Time | min | 90-180 | ≤360 | 120-210 | ≤360 | 240-300 | ≤360 | 210-270 | ≤300 |
Flexural Strength (24h) | MPa | - | ≥5.5 | - | ≥6.5 | 9-11 | ≥5.0 | 6-8 | ≥4.0 |
Flexural Strength (72h) | MPa | - | ≥6.5 | - | ≥7.5 | 11-12 | ≥6.0 | 7-9 | ≥5.0 |
Compressive Strength (24h) | MPa | 45-55 | ≥40 | 50-60 | ≥50 | 45-55 | ≥30 | 40-50 | ≥25 |
Compressive Strength (72h) | MPa | 50-60 | ≥50 | 60-65 | ≥60 | 55-65 | ≥40 | 50-60 | ≥30 |
Ronghua refractory cement is mainly made of bauxite and other components. It is a new type of high-temperature resistant material. And it is a water-hardening cementitious material with an alumina content of over 50%. So, it has excellent heat resistance performance. It is widely used in high-temperature industries as a high-quality additive material or adhesive. And it also is the the refractory castable.
CA50
CA50 cement has an alumina content mainly above 50%. It has a short initial setting time and strong rheological properties. It is suitable for various fast and durable casting methods.
CA70
CA70 insulating refractory cement has an alumina content mainly above 68% and contains 28-30% calcium oxide. This cement has better flexural strength. Depending on the fineness, it is mainly divided into four types:
CA80
CA80 heat refractory cement has an alumina content mainly above 78.0%. It includes the following two categories.
High-temperature Resistant
Ronghua cement has strong refractoriness. It can withstand temperatures ranging from 1200 to 1800 degrees Celsius. Additionally, it has excellent thermal shock resistance. Even with rapid temperature changes, the volume of refractory cement changes minimally. It is suitable for various high-temperature industrial environments.
Strong Mechanical Forcen
Ronghua cement has strong wear resistance, compressive strength, and flexural strength. It has a high density. These features ensure durability in high-temperature industries. In abrasive environments, this monolithic refractory can help extend the lifespan of high-temperature equipment.
Corrosion Resistance
Refractory cement exhibits strong resistance to chemical erosion from slag. It can maintain good performance and structure in chemically corrosive environments. It is without negatively impacting equipment. This is crucial in industrial applications.
Strong Adhesion
Ronghua cement powder has excellent bonding properties. In high-temperature environments, it can adhere to the surfaces of various materials. This ensures the stability and integrity of the overall structure of high-temperature equipment. This characteristic is essential for the effectiveness of equipment operating in high-temperature conditions.
Ronghua refractory cement is high-temperature resistant and has high mechanical strength. It is suitable for various industries, such as the refractory materials industry, construction industry, engineering, steel, power, petrochemical, cement industry, and so on. It is used for casting materials, high-temperature kilns, boilers, incinerators, linings, fixed parts, fireplaces, chimneys, road construction maintenance, and so on. It can protect the surrounding structures of equipment from heat damage. And it is also an important repair material. If your industry has a need for cement, please contact us. We will provide detailed solutions and products based on the usage scenarios and temperatures.
Ronghua Refractory, as a manufacturer and supplier of refractory cement, has its own factory and over 200 employees. Our strong production capabilities and customer-centric service have led many customers to choose us.
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