Magnesium Aluminate Spinel (S68, S78)

Our magnesium aluminate spinel is available in two standard models: S68 and S78.，Magnesium aluminum Spinel is made of high-purity materials prepared and melted, with high bulk density, lowwater absorption, high temperature resistance, small thermal expansion coefficient, good thermal stability, good appear-ance color, excellent spalling resistance, corrosion resistance and other characteristics. It is widely used in refractory.steelmaking, cement rotary kins and glass industry kins. It is an ideal raw material for the production of refractories such as high-performance castables, sliding nozzles, ladle-lined bricks, and investment castings.

Magnesium aluminate spinel boasts excellent high temperature resistance and corrosion resistance, and hardly cracks or peels off under alternating hot and cold environments. It is primarily applied to produce protective refractory linings for all kinds of high-temperature equipment.

In the steel industry, it is processed into refractory bricks and repair compounds for steelmaking furnaces and ladle interiors to withstand scouring and corrosion from high-temperature molten steel. For cement plants, it is made into lining bricks for cement rotary kilns to mitigate damage on the kiln’s high-temperature zones. Non-ferrous metal smelters adopt it as furnace lining to resist corrosion induced by molten metals and alkaline materials.

Besides, it can be blended with other refractory raw materials to make castable and smearable repair materials. It is also used for inner protective layers of high-temperature heat storage equipment for glass manufacturing, high-temperature ceramic firing kilns and chemical high-temperature cracking furnaces. Capable of enduring prolonged continuous high-temperature working conditions, this product fits a wide range of industrial sectors that demand heat-resistant linings, such as metallurgy, cement, non-ferrous metal processing and chemical engineering.

Our magnesium aluminate spinel delivers prominent practical advantages. First of all, impurities in raw materials are strictly controlled, so few low-melting impurities will form under high-temperature conditions, which effectively boosts the corrosion resistance of refractory products. Secondly, the finished products are densely fired with few internal voids, making it difficult for high-temperature molten substances to penetrate into the material and greatly prolonging the service life of refractory parts.

This material performs well against drastic temperature changes, and rarely cracks or flakes off when equipment undergoes repeated heating and cooling. We offer two specifications with different alumina-magnesia ratios, allowing customers to choose flexibly based on their actual working conditions. Every batch maintains consistent performance indicators, and its measured properties are generally better than the specified standards. It can be perfectly blended with all kinds of refractory raw materials without compatibility issues during production.

Our factory ensures stable mass supply. Compared with similar high-temperature resistant raw materials, it comes with lower overall costs for purchasing and usage. It can be stably matched to produce both solid refractory bricks and liquid refractory repair slurries.