Can High-Aluminum Low-Cement Castables Completely Replace High-Aluminum Castables?

High-aluminum low-cement castables can completely replace high-aluminum castables. Because high-aluminum castables have a large proportion of high-aluminum cement binder and high calcium content, the later strength of refractory castables will be problematic. High-aluminum low-cement castables have a high grade of high-aluminum cement and low calcium content, and the effect of using them from the initial setting to the later strength of refractory castables is better than that of high-aluminum castables.

Rongsheng High Alumina Castable

According to the current market usage and the production situation of castable manufacturers, high-aluminum castables are produced, shipped and used with the process of low-high-aluminum cement castables. When high-aluminum low-cement castables are constructed, the amount of water added is small, only between 6-7%, while the amount of water added for high-aluminum castables is 12%, which has obvious advantages in terms of setting time and baking process.

At present, manufacturers use high-aluminum castables, and the indicators are mostly the indicators of low-cement refractory castables. Even manufacturers no longer add a large amount of high-aluminum cement binder during production, and directly produce low-cement castables. The use of low-cement refractory castables increases the use cycle and construction convenience in terms of use effect.

Although the cost of low-cement refractory castables is slightly higher than that of high-aluminum castables. Low calcium content, less water added during construction, while the service life of the lining after construction is guaranteed, can extend the service life of the furnace lining.

In summary, high-aluminum low-cement refractory castables are replacing products with high cement addition, which is the trend of the market and usage effects. In the selection of materials for high-temperature industrial furnace linings in the future, they can replace castables with high cement addition.

Rongsheng Refractory Castables Series

Corundum-Mullite Refractory Castables

Corundum-Mullite Castables are high-performance castables made of high-quality corundum and mullite as the main raw materials, plus micro powder and additives. It has the advantages of good thermal shock stability, low creep rate, small thermal expansion and strong resistance to chemical erosion. It is mainly used in the front kiln mouth, coal injection pipe, kiln head cover, tertiary air duct and grate cooler of medium and large cement kilns.

High-aluminum low-cement castables and high-aluminum high-strength refractory castables

High-aluminum low-cement castables have the characteristics of high density, low porosity, high strength, low wear, thermal shock resistance and erosion resistance. It combines the characteristics of traditional refractory materials and adopts the most advanced ultrafine powder application technology to highlight the improvement of medium-temperature strength and high-temperature volume stability of castables. The organizational structure of the product forms a firm anchor-shaped multi-directional crystal structure at high temperature, ensuring the overall structural stability of the lining, and the service life is 2-3 times longer than that of traditional castables. It is suitable for cement kilns, kiln hoods, grate coolers, preheaters, decomposition furnaces, tertiary air ducts, etc.

Plate-shaped corundum castable

Plate-shaped corundum castable uses high-purity, high-melting-point plate-shaped corundum as the main raw material, combined with high-quality active alumina micropowder and other raw materials. It has high thermal shock stability, anti-stripping and anti-creep performance, high refractoriness, good volume stability, and significantly enhanced high-temperature performance and wear resistance. At the same time, by adding silicon carbide, the erosion resistance of the corundum castable is greatly enhanced. It is mainly used for kiln mouths and burners.

Ultra-high-strength wear-resistant refractory castable

Ultra-high-strength wear-resistant castable is composed of high-density aggregate, ultra-fine powder and special additives. After optimized formula design, it has the characteristics of high strength, high wear resistance, anti-scouring and strong integrity. It is suitable for the front kiln mouth, coal injection pipe, kiln head cover, tertiary air duct elbow, gate, grate cooler throat and other parts of medium and large cement kilns.

To purchase high-quality high-aluminum refractory castables, please contact Rongsheng for free samples and quotations.