Zhengzhou Rongsheng specializes in producing high-purity white corundum with alumina content ≥99.5% and ultra-low sodium levels (≤0.30%). Manufactured using first-grade industrial alumina through electric arc furnace melting at 2250°C, this product delivers exceptional thermal stability and refractory performance with a working temperature up to 1850°C. It features low porosity and Mohs hardness over 10, enhancing wear resistance and impact durability. Ideal for steel ladle castables, medium to high-grade refractory castables, prefabricated refractory shapes, and industrial furnace linings. Supported by ISO9001, ISO14001, and ISO45001 certifications, Rongsheng guarantees consistent batch quality and reliable delivery through automated production and stringent quality control. Our extensive R&D capabilities and customized technical support make this product a trusted choice for power generation, steel, petrochemical, and building materials sectors worldwide.
1. High purity alumina content ≥99.5%, ensuring excellent refractory performance.2. Ultra-low sodium content (≤0.30%) improves chemical resistance and thermal stability.3. High refractoriness up to 1850°C suitable for extreme high-temperature environments.4. Low porosity enhances mechanical strength and durability.5. Mohs hardness above 10 offers superior wear resistance and impact toughness.6. Manufactured with advanced electric arc furnace technology for consistent quality.7. Certified with ISO9001, ISO14001, and ISO45001, ensuring quality and safety standards.8. Customizable grades and technical solutions supported by expert R&D team.
Widely used in steelmaking industry for ladle castables, medium to high-grade refractory castables, prefabricated refractory parts, and industrial furnace linings. Suitable for power plants, steel mills, petrochemical plants, and building materials factories requiring reliable acid-alkali resistant and high-temperature refractory solutions. Ideal for customers seeking materials with low sodium content and superior durability in harsh industrial environments.
