That’s what makes the difference:
Drying, coating and calcination
in one step
Powder in the micrometer and nanometer range
Particularly homogeneous powders without hard aggregates
Narrow
particle size distributions
Precisely definable chemical composition
Extremely homogeneous thermal treatment of the material
Continuous, easily scalable process
Temperature treatment up to 750 °C (optionally 1300 °C) possible
Very high heat and stock transfer rates
The innovative Glatt powder synthesis offers numerous advantages over other technologies established today. The prerequisite for this is the pulsating gas flow influencing the formation of the particles and thus the properties of the powder in several ways:
Flexibility for raw materials and process gas
Glatt powder synthesis is extremely flexible with regard to the raw materials: solutions, suspensions or solids can be used. Depending on the application, either ambient air, inert or active gases are applied as process gas.
Powder with the highest degree of purity
The electric heater reliably prevents contamination of the product by combustion residues.
Nanoparticles with narrow particle size distribution and specific surface area
The impact of pressure waves further atomizes the primary droplets created during injection. The result is a superfine powder with a narrow particle size distribution and a high specific surface area
Highest homogeneity and no hard aggregates
The highly turbulent gas flow within the reactor tube leads to a strong mixing of the gas and the droplets or particles. Temperature velocity gradients in the pulsating gas flow are homogenized. The absence of thermal hotspots prevents hard aggregates and all particles experience the same time/temperature regime. The individual particles can easily be separated and dispersed.
Further information on this topic and related topics can also be found in the following publications:
June 2021: ‘Fraunhofer IKTS operates world’s first flameless high-temperature powder synthesis plant’
Published article: ‘Ceramic Raw Materials from the Pulsating Hot Gas Stream’ PDF, English
Published article: ‘New Battery Material by Powder Synthesis’ PDF, English
Published article: ‘From Hot Gas Stream to Matt Finish by Glatt Powder Synthesis’ PDF, English