EN
Our company produces spray-dried powders for high-purity, high-temperature ceramic structural parts in grades such as 99, 99.5, 99.7, and 99.8. Made from high-grade raw powders imported from Germany, our products offer high purity, fine primary crystal size, and uniform particle distribution. Prepared through a specialized spray drying process, the particle size is precisely controlled. The entire production process strictly adheres to advanced foreign technical specifications, with standardized execution in key processes such as ball milling, dispersion, and binder addition.
Core Product Specifications (99 / 995 / 997 / 998)
Raw Material Primary Crystal Size: ≤0.6 µm
Al₂O₃ Content: ≥99-99.8%
Ultra-Low Impurity Content: Na₂O≤0.03%,MgO≤0.1%, Fe₂O₃≤0.03%
Bulk Density:2.3-2.4g/cm³
Forming Pressure: Low-pressure molding (100MPa)
Sintering Schedule: 1600°C/2h (low temperature, short duration)
Sintered Body Density: :≥3.9-3.93 g/cm³
Firing Shrinkage Rate: Consistently controlled within 15%-18%
Electrical Properties: Dielectric constant and dielectric loss reach the same standard as imported spray-dried powders.
Processing and Molding Advantages
The spray-dried powder exhibits:
1.Excellent plasticity for low-pressure molding
2.Easy air release during molding without delamination
3.Soft powder consistency with high flowability
4.Moderate green strength, easy debinding during sintering, free of residual carbon and black spots
These advantages are achieved through:
Use of high-quality imported binder additives.
Strict control over homogenization, ball milling, and dispersion timing.
Maintaining a weakly acidic slurry environment for high stability and reliability.
Applications
Widely used in ceramic guide rails, large ceramic components, demanding structural ceramics, and related fields.
