Corundum ramming mass is a high-grade monolithic refractory ramming material made primarily from high-purity corundum, combined with high-quality micro-powders, composite binders and additives. It belongs to neutral/weakly acidic refractory materials, and is applied by ramming or vibration construction, often used in high-temperature and severe erosion areas.

1. Main Components:

• Aggregate: white corundum, brown corundum, tabular corundum, fused corundum

• Matrix: fine corundum powder, α-Al₂O₃ micro-powder, activated alumina powder

• Binder system: water glass, phosphate, resin, low-cement / ultra-low cement binders

• Additives: water reducer, anti-cracking agent, sintering agent

2. Physical and Chemical Characteristics:

• High Al₂O₃ content, typically ≥ 80%, and over 95% for high-grade products

• High refractoriness and good high-temperature volume stability

• High hot strength and excellent wear resistance

• Good thermal shock resistance, not easy to spall

• Resistant to acid slag and molten metal corrosion, without polluting molten steel

3. Performance Advantages:

• High temperature resistance, erosion resistance and wear resistance

• Dense structure with strong penetration resistance

• Easy construction and good overall integrity

• Long service life, suitable for harsh working conditions

4. Main Applications:

• Lining, bottom and sidewall of induction furnaces and electric arc furnaces

• Lining and patching materials for ladles and iron ladles

• Blast furnace tapholes, slag runners, and around burner blocks

• High-temperature sections of non-ferrous smelting furnaces, heat treatment furnaces and rotary kilns