TECHNOLOGIES | Jet Milling, Classification & Crushing | FIMILL
We specialize in advanced material processing technologies with a focus on precision, purity, and process efficiency. Thanks to our in-house equipment design and development, we offer comprehensive solutions — from crushing and micronization to fine fraction classification and homogeneous mixing. Our technologies ensure top-tier product quality even when processing demanding or sensitive materials.
Jet Milling
Jet milling is a highly efficient micronization technique that enables precise grinding of brittle or crystalline materials to an average particle size of less than 10 µm. This process significantly increases the specific surface area of the material, thereby enhancing its physical properties and overall processability.
Inside the milling chamber, particles are accelerated by a stream of compressed air, steam, or another medium injected at supersonic speed through a system of convergent or convergent-divergent nozzles. Micronization occurs through repeated inter-particle collisions as well as impacts with the chamber walls. The micronized product is then transported for further processing.
Our proprietary jet mill design offers several key advantages:
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No moving parts – minimizes wear and heat generation.
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No screens – eliminates the risk of clogging or damage, ensuring uninterrupted operation.
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Suitable for thermolabile materials thanks to the cooling effect of the jet stream.
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High efficiency, purity, and product homogeneity.
We use a jet mill of our own design, featuring two adjacent rows of nozzles arranged around the circumference of the milling chamber, each set at an opposite angle. The material is micronized through frontal particle-to-particle impacts and automatically carried by the medium flow to the outlet. The mill is self-feeding and suitable for materials of any hardness level.
Fine Fraction Classification
For particle fractions smaller than a few millimeters, we utilize a custom-designed air classifier operating in a compressed-air environment. The classifier can be precisely adjusted to achieve the target output fraction according to the customer’s specifications.
Homogeneous Mixing
Our classifier also functions as an efficient mixing unit, capable of continuously blending different fractions of the same or various materials. By using a controlled stream of compressed air, this process ensures perfect homogeneity of the resulting mixture.
Crushing
When micronization is not required, or when materials need to be pre-reduced to particles of up to 10 mm, we employ our own crushing technology.
Our equipment can handle even large input materials (e.g., 400 × 400 × 40 mm), including hard and abrasive substances. The output particle size can be precisely tailored to meet customer requirements.
