Micronization has been for many years a key step in powder processing for special applications where size ranges of 10 microns or less are needed. Nevertheless, the air-jet milling technology has seen very few improvements.
Limitations of commercial air-jet technologies today are mainly:
Accelerating particles to collide at very high speeds result in particle degradation and increase of amorphous content, especially on the particle’s surface.
Obtaining particles smaller than 5 microns often require multiple passes in the micronizer, yielding inferior crystalline quality as well as process inefficiency
Handling sticky, fluffy or semi-dry particles is difficult.
Micronizers are sensitive to blockages at feeding points (i.e. the Venturi injector) and nozzles.
Due to the specificity of the technology, many customers lack the required expertise to maximize machine performance, develop process for new products and trouble shoot quality or operational issues.
SuperFine’s technology overcomes these limitations.
Unique technology - Vortex milling
Most micronizers operate on the principle of colliding particle with each other at high speeds. Our technology is based on subjecting the particle to rapid shifts in air pressure and flow directions. Hence, the particle is breaking along its natural dents, cavities or crystal defects. The result is a “clean cut” that is not accompanied with compression or amorphization of crystal surface.
Since the particles do not need to move at high speeds, we can micronize substances such as:
The special airflow dynamics in the system imply that the lowest air pressure point is located within the micronizer. There is no Venturi injector or inlet hoppers that
could clog as long as the micronizer is running.
Leaves, natural products
Soft/elastic substances such as polymers
Hard particles – minerals, rare-earths etc.
Delicate crystals – Pharmaceutical active ingredients and excipients.