Alumina cement: composition, properties and areas of use

Introduction

Alumina cement is a high-strength binder widely used in industry, especially in high temperatures and aggressive environments. Unlike conventional Portland cement, it has unique properties such as rapid hardening, high fire resistance and resistance to chemical attack.

Company Kerui Refractory produces high quality refractory cementIn this article we will analyze the composition, key characteristics and applications of this material and compare it with traditional types of cement. In this article we will analyze the composition, key characteristics and applications of this material, as well as compare it with traditional types of cement.

1. Composition of alumina cement

Alumina cement (or aluminate cement) is made from bauxite and limestone, which are fired at 1400-1600°C. Main components:

• Calcium aluminates (CA, CA₂) - provide fast curing and high strength.

• Aluminum oxide (Al₂O₃, 35-55%) - imparts fire retardant properties.

• Calcium oxide (CaO) - affects the rate of setting.

• Mineral additives - improve heat resistance and chemical resistance.

2. basic properties of alumina cement

2.1 High strength and fast curing time

• It's gaining up to 50% strength in 24 hours (conventional cement - in 7-28 days).

• Ideal for emergency repairs and speedy construction.

2.2 Fire resistance

• Withstands temperatures up to 1600°CThis makes it indispensable in metallurgy and furnace production.

• Unlike refractory cement based on Portland cement, alumina cement does not crack under sharp temperature changes.

2.3 Chemical resistance

• Resistant to sulfates, acids and seawater.

• It is used in the chemical industry and facilities with aggressive media.

3. Areas of application

3.1 Metallurgy

• Lining of furnaces, blast furnaces and steelmaking units.

• Refractory masonry repairs.

3.2. Construction

• Erection of bridges, tunnels and hydraulic structures.

• Fast curing concretes for urgent work.

3.3 Chemical industry

• Tanks for acids and alkalis.

• Protective coatings in aggressive environments.

4. Comparison of alumina cement with traditional cement types

Alumina cement differs significantly from traditional cement formulations in its properties and applications.

Comparison with Portland cement

5. Where to buy quality alumina cement?

Company Kerui Refractory offers certified refractory cement with an optimal ratio of Al₂O₃ to CaO. Our products meet international standards and are successfully used in heavy industry.

Kerui Refractory Advantages:
✔ High alumina content (up to 70%).
✔ Customized solutions for different industries.
✔ Worldwide shipping.

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Conclusion

Alumina cement is an indispensable material for high-temperature and chemically aggressive environments. Its unique properties make it the best choice for metallurgy, construction and industry.

If you need a reliable supplier refractory cement, please contact Kerui Refractory - we guarantee the quality and long service life of our products!