High Strength Spinel Refractory Mortar for Wholesale Dry Powder Bonding. Optimal Chemical Composition: Contains 65-70% Al2O3 and 7-8% MgO for enhanced durability. Rapid Sintering Time: Achieves full sintering within 1 to 2 minutes for efficient production. Versatile Application: Ideal for constructing slag lines and filling gaps in cement, glass, and steel plants. Advanced R&D Capability: Backed by an engineering center and testing labs for rigorous product validation. Massive Production Capacity: Annual output of 148,000 tons across multiple specialized production lines.