High-quality Refractory High Alumina Cement Ca50, Ca60, Ca70, C80 Bauxite Refractory Cement

Overview of refractory-high-alumina-cement

Refractory High alumina  cement are hydraulic binding materials made from high-purity calcium materials and high-purity alumina as the main raw materials, along with clinker with an alumina content of approximately 50%. Depending on the Al2O3 content, they can have completely different types: CA50, CA60, CA70 and CA80. CA-50, CA-70, CA-80, with alumina contents of more than 48%, 68% and 77% respectively. Their refractoriness is greater than 1650 ℃, and the usable temperature can reach 1800 ℃. The impurity content is lower than that of other ordinary cement.

Features of refractory-high-alumina-cement

Refractory High-alumina cement is a high-performance refractory material made from bauxite as the main raw material. It has the following core characteristics:

1. Excellent high-temperature performance
High refractoriness: Usually above 1650°C (depending on the aluminum oxide content), suitable for high-temperature kilns, metallurgy and other industries.
Strong thermal stability: Good volume stability at high temperatures, less prone to cracking or flaking.
2. High aluminum content and chemical inertness
High aluminum oxide (Al₂O₃) content (generally ≥ 50%), giving it excellent corrosion resistance, capable of resisting acidic slag and alkaline media erosion.
Low impurity components (such as Fe₂O₃, SiO₂ content is low), reducing the risk of melting at high temperatures.
3. Rapid hardening and high strength
High early strength: Short setting time, fast hardening, suitable for rapid construction or emergency repair projects.
High mechanical strength: Can maintain high compressive and flexural strength at both normal temperature and high temperatures.
4. Wide application adaptability
Good plasticity: Easy to mix with other refractory aggregates (such as high alumina bauxite, corundum, etc.) to make casting materials or spray coatings.
Strong adhesion: Can be used as a binder for refractory brick masonry or repair.
5. Wide application fields
Typical uses: Steel smelting furnaces, cement rotary kilns, glass melting furnaces, waste incinerators, etc. for high-temperature equipment.
Special scenarios: Nuclear power, aerospace, etc. (requiring high-purity models due to extremely high purity requirements of materials).

applications refractory-high-alumina-cement

High-alumina refractory cement is a hydraulic binding material made by grinding alumina ore and limestone as the main raw materials after high-temperature calcination. It features high fire resistance, rapid strength development, and strong resistance to chemical erosion. The following are its typical application fields.

I. Inner Linings for High-Temperature Industrial Kilns
Metallurgical industry: Used for refractory mortars or spray coatings in high-temperature areas such as blast furnaces, hot air furnaces, electric furnaces, and steel ladles, capable of withstanding temperatures up to 1600°C or higher.
Cement rotary kilns: As repair materials for high-temperature areas such as kiln mouths and preheaters, with excellent thermal shock resistance.
Glass melting kilns: Used for pool walls, liquid flow channels, etc., in areas prone to erosion, with strong alkali resistance and resistance to glass liquid erosion.

II. Refractory Preforms and Mortars
Mixed with aggregates (such as kaolin, corundum) to form non-shapeable refractory materials, used for rapid construction or refractory structures with complex shapes (such as furnace doors, burner bricks).
Typical ratio: High alumina cement + high alumina aggregate + fine powder, forming a high-strength refractory system.

III. Emergency Repair and Rapid Hardening Projects
Due to their high early strength (up to 80% of the standard strength within 1 day), suitable for emergency repairs of equipment or military projects.
For example: Rapid repair of damaged inner linings in boilers, without the need for long-term curing.

IV. Resistance to Chemical Corrosion Environments
Used in chemical industry reaction vessels and pipe linings, resisting erosion by sulfate salts, weak acids, etc.
When used in combination with acid-resistant aggregates, the performance can be further enhanced.

V. Special Architectural Structures
High-temperature chimneys, fireproof isolation belts, etc., requiring both fire resistance and structural strength.
Note: Need to perform carbonation prevention treatment when exposed to a humid environment for a long time.

Henan Litete Refractory Materials Co., Ltd. has served over 5,000 projects and has been dedicated to the production and research of refractory materials for 30 years. It has professional technology and a mature team. Its products have been exported to various markets all over the world and it is a well-known enterprise. In addition, it also has overseas warehouses, which helps with quick delivery and ensures the reliability of the products.

company introduction

Henan Lite Refractories Co., Ltd. was founded in 1994, is located in theRefractories Industrial Park, Chaohua Town, Xinmi City, Henan Province, with astandardized production base of 5,0000 square meters and an annual productioncapacity of more than 150,000 tons. The company is mainly engaged in theresearch and development, production and sales of refractory materials, as well asthe design, contracting, construction, maintenance of kiln projects and import andexport services of refractory materials. The company's R&D, production, qualityinspection, sales and other departments total more than 100 people, including 2PhDs, 2 professorial senior engineers, 10 masters of engineering, to ensure thatthe company's management with professionalism.

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Refractory High alumina cement are hydraulic binding materials made from high-purity calcium materials and high-purity alumina as the main raw materials, along with clinker with an alumina content of approximately 50%. Depending on the Al2O3 content, they can have completely different types: CA50, CA60, CA70 and CA80. CA-50, CA-70, CA-80, with alumina contents of more than 48%, 68% and 77% respectively. Their refractoriness is greater than 1650 ℃, and the usable temperature can reach 1800 ℃. The impurity content is lower than that of other ordinary cement.