Zhengzhou Rongsheng Refractory Materials Co., Ltd. specializes in producing ultra-pure white corundum with Al₂O₃ ≥ 99.5% and Na₂O ≤ 0.30%. It is smelted from high-quality industrial alumina in a 2250°C electric arc furnace, exhibiting excellent thermal stability (temperature resistance ≥ 1850°C), high hardness (Mohs hardness > 10), and a dense structure. The product boasts outstanding resistance to acid and alkali corrosion and is widely used in high-end refractory castables, precast bricks, and high-temperature kiln linings. It is particularly suitable for harsh operating environments such as steel smelting, power boilers, and petrochemical catalytic cracking. Certified by ISO9001 and CE, the company supports global technical support and customized solutions, helping customers improve equipment lifespan and operating efficiency. It is a high-quality refractory material raw material trusted by international customers.

1. Al₂O₃ purity ≥ 99.5%, Na₂O content ≤ 0.30%, impurity control is better than industry standards.
2. It has stable high-temperature resistance and can be used at temperatures above 1850°C for extended periods.
3. The dense structure and high hardness ensure wear resistance and corrosion resistance, extending the kiln's lifespan.
4. Certified by multiple international organizations such as ISO9001 and CE, ensuring reliable quality.
5. We support customized particle size, shape, and packaging solutions according to customer needs, serving customers worldwide.

It is suitable for the manufacture of refractory products such as castables, ramming mixes, and precast bricks for high-temperature kilns in industries such as iron and steel metallurgy, power generation, petrochemicals, ceramics and glass; it is mainly targeted at refractory material manufacturers and engineering contractors in Europe, America, the Middle East and Southeast Asia.