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
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.
Extremely high rates of heat and mass transfer
Pulsation maintains a relative velocity between particles and gas stream along the entire length of the reactor. Boundary layers around the particles cannot form. Heat and mass transfer are thus significantly enhanced.
Unique particle structures
The particles form, dry and heat up extremely quickly in Glatt powder synthesis. At the end of the reactor tube the are instantaneous cooled down. This accelerated particle formation and phase transformation ensure the desired reaction states and enable the formation of unique structures.
All processes in a single step
Glatt powder synthesis combines particle formation, drying and calcination and in a single step. If required, a coating can be integrated to create functional core shell particles with specific layer thickness, porosity and activity properties
Good scalability with maximum flexibility for the process.
The thermodynamic conditions of Glatt powder synthesis are easily adaptable through specific process control. Process conditions such as temperature flow rate, residence time, frequency and amplitude are precisely adjustable. Despite the large number of options for influencing the product, the process remains readily scalable, so that reactor sizes from laboratory to production scale are possible.
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Selecting the Most Suitable Technology According to Your Product Requirements!
Whether production, modification or coating of powder particles in the nano and micrometer range or drying and spray granulation of liquids containing solids, spray agglomeration of powders, microencapsulation for the protection of sensitive substances or coating for particle functionalization – the key to the optimum product lies in the right selection of the substances and process parameters used and in the multitude of their combination possibilities.
In processes with innovative powder synthesis, fluid bed and spouted bed technologies from Glatt, you have almost unlimited possibilities for optimal particle design and suitable functionalization of powders, granules and pellets.
Further information on this topic and related topics can also be found in the following publications: