Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Refractory Cement
Refractory Cement CA50, CA70 & CA80 for High-Temperature Applications
CA50 | CA70 | CA80
| ZKD Refractory supplies calcium aluminate cement for refractory castables, furnace repair and other high-temperature applications, with CA50, CA70 and CA80 grades available.
Get a Quote
Available Grade
| Grade |
Al₂O₃ (%) |
Typical Use |
| CA50 | 50 |
General-Purpose Applications |
| CA70 | 70 |
High-Temperature Applications |
| CA80 | 80 |
High-Purity Applications |
Choose the Right Refractory Cement
Different refractory applications require different cement grades. Choose according to alumina content, temperature, castable formulation and service conditions.
CA50 | CA70 | CA80
Not sure which grade to choose? → Contact Our Engineer
CA50 ⁄ CA70 ⁄ CA80
|
CA50
50% Al₂O₃ |
CA70
70% Al₂O₃
|
CA80 80% Al₂O₃ |
|
General-Purpose Pizza Oven • Castables • Furnace Repair |
High-Alumina Industrial Furnace • Cement Kiln • Steel & Foundry |
High-Purity High-Temperature Furnace • High-Purity Castables • Demanding Applications |
| View CA50 → | View CA70 → |
Not sure which grade is suitable for your application?
Send us your application, operating temperature and refractory formulation requirements. Our team can help recommend a suitable grade.
Typical Applications
| <a href="https://www.zkdrefractories.com/e_products/Refractory-Castable-7-14.html">Refractory Castables</a> |
<a href="https://www.zkdrefractories.com/e_products/Pizza-Oven--Small-Kiln-Solutions-13.html">Furnace Repair</a> |
<a href="https://www.zkdrefractories.com/e_products/Cement-Kiln-Solutions-12.html">Cement Kilns</a> |
<a href="https://www,zkdrefractories.com/e_products/Steel--Foundry-Furnace-Solutions-15.html">Steel & Foundry</a> |
|
Used as a hydraulic binder in refractory castable formulations |
Suitable for repair materials used in high-temperature furnace linings. |
Used in selected refractory lining and maintenance applications. |
Suitable for high-temperature refractory applications in steelmaking and foundry operations. |
Why Use Calcium Aluminate Cement?
High Alumina Content
CA50, CA70 and CA80 grades are available for different refractory requirements.
High-Temperature Performance
Suitable for demanding high-temperature refractory applications.
Hydraulic Bonding
Provides bonding strength in refractory castables after mixing and curing.
Grade Flexibility
Different grades allow selection according to formulation and operating conditions.
Technical Data
| Item | CA50-600 | CA50-700 | CA50-900 | CA70 | CA70W | CA70S | CA71 | CA80 | CA80S | ||
| Chemical Composition | ω (SiO2) ≤/% | 7.8 | 7.5 | 5.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
| ω (Al2O3)/% | 50 | 51 | 53.5 | 68.5-70.5 | 68.5-70.5 | 68.5-70.5 | 69.5-71.5 | 78-81 | 78-81 | ||
| ω (Fe2O3) ≤/% | 2.5 | 2.5 | 2.5 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | ||
| ω (CaO)/% | / | / | / | 28.5-30.5 | 28.5-30.5 | 28.5-30.5 | 27.5-29.5 | 17.5-20.5 | 17.5-20.5 | ||
| ω (MgO) ≤/% | / | / | / | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | ||
| ω (R2O) ≤/% | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | ||
| ω (S) ≤/% | 0.1 | 0.1 | 0.1 | / | / | / | / | / | / | ||
| ω (Cl) ≤/% | 0.1 | 0.1 | 0.1 | / | / | / | / | / | / | ||
| Fineness | d50/μm | / | / | / | 4~11 | 8~11 | 6~9 | 10~13 | 5~8 | 5~8 | |
| -45μm ≤/% | / | / | / | 8.0 | 5.0 | 5.0 | 8.0 | 5.0 | 5.0 | ||
| Setting Time | Initial Setting Time (min) | ≥45 | ≥60 | ≥90 | 120-180 | 30-90 | 180-240 | 150-210 | 30-90 | 90-150 | |
| Final Setting Time (min) | ≤360 | ≤360 | ≤360 | 150-240 | 90-180 | 240-330 | 210-300 | 90-180 | 270-360 | ||
| Strength (ISO) | Flexural Strength/Mpa | 24h | 6.0 | 6.5 | 8.0 | 7.5-10.0 | 8.0-10.5 | 8.0-10.5 | 8.5-11.0 | 5.0-7.5 | 5.0-7.5 |
| 72h | 7 | 7.5 | 10 | 10.0-12.0 | 10.5-12.5 | 10.5-12.5 | 11.0-12.5 | 6.0-8.5 | 6.0-8.5 | ||
| Compressive Strength/Mpa | 24h | 45 | 55 | 72 | 40-50 | 45-55 | 45-55 | 50-60 | 30-40 | 30-40 | |
| 72h | 55 | 65 | 82 | 45-55 | 50-60 | 50-60 | 55-65 | 40-50 | 40-50 | ||
| 325M ≤/% | 15 | 12 | 8 | / | / | / | / | / | / | ||
| Specific Surface Areas ≥/ (㎡/kg) | 300 | 320 | 350 | / | / | / | / | / | / | ||
Packing and Storage
25 kg Bags
Moisture-resistant packaging for standard export orders.
1000 kg Jumbo Bags
Available for bulk orders and large-volume projects.
OEM Packaging
Customized bags, labels and packaging options are available.
Why Buy High Alumina Refractory Cement from ZKD Refractory
Factory Direct Supply：Direct supply from our refractory manufacturing facility.
Multiple Grades：CA50, CA70 and CA80 available.
Technical Support:Grade selection and application support for refractory cement requirements.
Quality Control：Raw material selection, production and finished-product inspection.
OEM Packaging：Customized packaging for export orders.
High Alumina Cement FAQ:
1. What is refractory cement used for?
Refractory cement is mainly used as a binder in refractory castables, furnace repair materials, kiln linings and other high-temperature applications.
2. What is the difference between CA50, CA70 and CA80 refractory cement?
The main difference is alumina content and purity. CA50 is commonly used for general refractory applications, while CA70 and CA80 are suitable for applications requiring higher alumina content and higher performance.
3. Which refractory cement is suitable for pizza ovens?
CA50 is commonly used for pizza ovens and other general-purpose high-temperature castable applications. The final grade should be selected according to the refractory mix and operating conditions.
4. Which refractory cement should I use for industrial furnaces?
CA70 or CA80 may be suitable for demanding industrial furnace applications, depending on the operating temperature, refractory formulation and chemical conditions.
5. Can refractory cement be used to make refractory castables?
Yes. Calcium aluminate cement is commonly used as a hydraulic binder in refractory castables. The required cement grade and addition level depend on the complete castable formulation.
6. What packaging is available for refractory cement?
Refractory cement is commonly supplied in 25 kg bags and 1,000 kg jumbo bags. OEM packaging can also be provided according to order requirements.
7. Can ZKD recommend the right refractory cement grade?
Yes. Please provide your application, operating temperature, castable formulation or technical requirements, and ZKD can recommend a suitable grade.
Need the Right High Alumina Cement?
Tell us your application, required grade, quantity and packaging requirements.
