Corundum Castable

      Corundum castable is an unshaped refractory material produced using high-purity alumina (corundum) aggregates and fine powders, combined with high-performance binders and functional additives.

      Its main crystalline phase is α-Al₂O₃, which has an extremely high melting point and excellent chemical stability, enabling the material to maintain structural integrity under very high temperatures and corrosive environments.

      This product is widely used as a working lining in high-temperature industrial furnaces in the metallurgical, power generation, non-ferrous metal, and petrochemical industries. It is often used in combination with low-cement refractory castables, steel-fiber reinforced castables, and corundum–mullite castables to form durable and reliable furnace lining systems.

Corrosion Resistance

      Corundum castables exhibit excellent resistance to acidic, alkaline, and neutral media, making them particularly suitable for applications involving long-term contact with molten metal, slag, or high-temperature gases. By optimizing the particle size distribution and bonding system, the material develops a dense microstructure after curing and firing, effectively reducing media penetration and minimizing chemical attack on the furnace lining.

Mechanical Properties

      Corundum castables possess high mechanical strength at both ambient and elevated temperatures, enabling them to withstand stresses caused by furnace charge impact, equipment vibration, and structural loads. Depending on specific service conditions, the formulation can be adjusted to enhance wear resistance or thermal shock resistance, allowing the material to meet the performance requirements of different industrial furnaces.

Quality Assurance

      Shandong Haixin Refractory Materials relies on its automated monolithic refractory production line and comprehensive testing system to strictly control the purity of corundum raw materials, particle size distribution, and finished product performance. This ensures that each batch of corundum castable maintains stable high-temperature performance, good workability, and consistent service life, providing reliable support for high-end industrial furnace lining systems.

Corundum castables are widely applied in critical zones of high-temperature industrial furnaces, including:

●Electric furnaces, refining furnaces, and ladle linings in the metallurgical industry

●Key sections of non-ferrous metal smelting and aluminum melting furnaces

●Combustion zones of high-temperature boilers in power plants

●Cracking and reforming furnaces in the petrochemical industry

●Working linings of various high-temperature industrial furnaces and kilns

Packaging Options:
50 kg bags, ton bags, pallet packaging, or sealed packaging. Custom packaging solutions are available upon request.

Storage Method:
Store in a dry and well-ventilated environment. Under the specified storage conditions, the product maintains stable performance.

With over 30 years of experience in refractory material research and industrial applications, Shandong Haixin Refractory Materials has consistently adhered to the principles of reliable performance, stable quality, and high application compatibility, providing global customers with cost-effective refractory solutions capable of stable long-term operation.

1. Strictly Selected Raw Material System

      We carefully select high-purity functional raw materials, including premium bauxite, mullite, corundum, and lightweight aggregates, ensuring product quality from the source. Through our own raw material production lines and rigorous incoming inspection system, we maintain stable chemical composition and minimal impurities, providing a reliable foundation for key properties such as high-temperature resistance and chemical corrosion resistance.

2. Mature Formulation and Refined Process

      Leveraging automated and digital production equipment, we precisely control raw material gradation, mixing time, molding pressure, and firing regime, ensuring that products achieve consistent performance in key indicators such as strength, density, and thermal conductivity.

3. Optimized Performance for Specific Operating Conditions

      Rather than simply pursuing maximum technical limits, we rationally match refractoriness, strength, thermal insulation, and service life according to different industries, furnace types, and components, ensuring that material performance aligns with actual working conditions.

4. Comprehensive Testing System

      Our technology center is equipped with dilatometer, load softening tester, thermal conductivity meter, thermal shock tester, and high-temperature furnaces, enabling systematic testing and detailed reporting of physical properties and chemical composition.

5. Dual Support: Product + Engineering Experience

      As both a refractory material manufacturer and an engineering service provider, Shandong Haixin's products are verified through numerous real-world projects across metallurgy, petrochemicals, ceramics, and power industries, providing extensive experience in practical engineering applications.

6. Customization for Complex Projects

      We offer tailored product formulas, specifications, and performance levels based on operating temperature, furnace atmosphere, construction method, and energy-saving requirements, ensuring a high degree of compatibility between materials and project needs.

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