الأسمنت عالي الألومينا
- آل2O3%: 50-81
- Fineness(d50/μm): 5-13
- Flexural Strength/Mpa(24h): 5.0-10.5
- Compressive Strength/Mpa(24h): 30-72
- الشهادات: ISO9001/ISO14001/ISO45001/ISO50001
- Sample: Testing of sample is available
Description of High Alumina Cement
High alumina cement (formerly known as bauxite cement) is a hydraulic cementitious material with aluminate as the main mineral component, which is prepared by bauxite and lime in a certain proportion, calcined and ground, also known as aluminate cement. It exhibits exceptional refractory properties, including high-temperature resistance, excellent thermal shock resistance, and low shrinkage at elevated temperatures. This cement is specifically designed for applications in high-temperature environments such as furnace linings, kiln linings, and other refractory installations. It offers rapid setting and hardening, achieving high early strength, and demonstrates good resistance to chemical attack, making it suitable for acidic environments.
Kerui High Alumina Cement Technique Data
| الصنف/الرتبة | CA50 | CA70 | CA80 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A600 | A700 | A900 | 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)/% | 50.0 | 51.0 | 53.5 | 68.5-70.5 | 68.5-70.5 | 68.5-70.5 | 69.5-71.5 | 78.0-81.0 | 78.0-81.0 | ||
| 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 | / | / | / | 11-4 | 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 | 7.0 | 7.5 | 10.0 | 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 | / | / | / | / | / | / | ||
Advantages of High Alumina Cement
Large Heat of Hydration
Early cement hardening releases a lot of heat. Compared with Portland cement of the same grade, it can release 70-80% of the total heat of hydration in only one day. Due to several heat releases, it is suitable for concrete works with low-temperature curing. As the best supplier in China, Kerui can provide customers with the highest quality products.
Strong Resistance to Sulfate Erosion
The cement stone structure of high alumina cement is dense, the main component is low calcium aluminate, and the content of calcium oxide is very small. During the hydration process, free calcium hydroxide is not precipitated but aluminum hydroxide gel is formed. A protective film is formed on the particle surface.
Good High-Temperature Resistance
It will always maintain a solid state in a high-temperature environment, and the strength of the cement will not change. High alumina cement can be used as a cementing material for heat-resistant concrete and configured into heat-resistant concrete. Welcome to visit Kerui factory to get free quotation.
Early Strength Characteristics
Its early strength increase rate is far higher than that of rapid hardening Portland cement, which is suitable for emergency repair projects, but its strength will decrease later, and its use in structural engineering is limited. Kerui will provide you with professional solutions and high-quality products.
CERTIFICATES OF KERUI REFRACTORY
حصلت مجموعة كيروي على عدد من الشهادات الدولية، مثل, ISO9001/ISO14001/OHSAS18001/CE/SGS. إلى جانب ذلك، تتمتع منتجات Kerui أيضًا بالعديد من الشهادات المحلية، والجودة مضمونة للغاية، وقد تم الاعتراف بها بالإجماع من قبل العملاء في الداخل والخارج.
Application of High Alumina Cement
مختبر كيروي للصهر الحراري
لدى Kerui مختبر فحص الجودة الاحترافي. فرن اختبار إعادة التسخين بدرجة حرارة عالية/فرن اختبار التليين الزاحف؛ ومقعد اختبار قوة الانضغاط/المرونة للمواد المقاومة للحرارة؛ ومنصة اختبار وفحص التركيب للمواد المقاومة للحرارة؛ ومختبر للخصائص الفيزيائية/الكيميائية للمواد المقاومة للحرارة.
منتجات الحراريات الحرارية من كيروي للتغليف والشحن
يتم تتبع عملية التسليم بأكملها، ويقوم فريق خبراء Kerui بحل احتياجات المشروع المحددة بأقصى قدر من الاحترافية. وإذا كان مشروع العميل يتطلب ذلك، يذهب فريق خبراء Kerui إلى بلد العميل لتقديم الدعم الفني وجهاً لوجه.
حالة عميل كيروي الحراري
إلى جانب البر الرئيسي للصين، قامت شركة Kerui Refractory بتصدير منتجاتها إلى أكثر من 50 دولة ومنطقة عبر 5 قارات في جميع أنحاء العالم، بما في ذلك آسيا وأوروبا وأمريكا وأفريقيا وأوقيانوسيا. وقد تلقينا تقديرًا وثناءً كبيرًا من العملاء في جميع أنحاء العالم، ونتلقى باستمرار طلبات إعادة العملاء وإحالاتهم.
