Powdered products cause trouble at every step. They raise dust, are hard to dose, segregate during transport and take up more storage space than necessary. Amandus Kahl supplies equipment for pelleting, granulating, coating and drying powdered and bulk chemical products.
Moving from powder to pellets is not cosmetics. It changes the behaviour of the product across the whole chain, from dosing to delivery to the customer.
Kahl has been building flat die presses for more than 40 years. The 33 series is specially adapted to the requirements of the chemical industry. Type 33–390 has been running there for over twenty years. The combination of die and rollers sets the diameter, length, bulk density, hardness and surface structure of the pellet.
Particles float in a stream of air while being dried, coated or agglomerated at the same time. Continuous processes with top and bottom spraying are used for instant products and granulates suitable for tabletting. Batch operation gives more freedom when many recipes are produced in varying quantities.
The rotary nozzle atomises one millilitre of liquid into ten million droplets, and the distribution of the solids flow ensures the product is sprayed from all sides. Without dilution, without liquid residue and without any risk of clogging. Used for enzymes, disinfectants, vitamins, flavours, vegetable oils, organic acids and dust binders.
Continuous channel dryers and coolers handle ground material, pellets, briquettes, square-shaped materials, loose, sticky and powdered products, and can dry and cool at the same time. Alongside them come a high-speed mixer and a continuous mixer for preparing the mix before pressing.
Alongside the above we also supply all conveying equipment, silos, bins, cyclones, filters, vibrating screens, electrical equipment and more.
Pellet diameter 0.8–20 mm. The types differ in die diameter and number of rollers. The choice depends on the product and the required throughput.
| Type | Die Ø | Rollers Ø / width | Number of rollers | Roller speed | Motor |
|---|---|---|---|---|---|
| 14–175 | 175 mm | 130 / up to 27 mm | 2 | 0.5–0.8 m/s | 3 kW |
| 25–500 | 500 mm | 230 / up to 75 mm | 4 | 1.7 m/s | 36 kW |
| 33–390 | 390 mm | 230 / up to 75 mm | 2 | 2.5 m/s | 15–30 kW |
| 33–500 | 500 mm | 230 / up to 75 mm | 3 | 2.5 m/s | 15–30 kW |
| 33–600 | 600 mm | 230 / up to 75 mm | 3–5 | 2.5 m/s | 15–30 kW |
| 38–600 | 600 mm | 280 / up to 100 mm | 3–4 | 2.5 m/s | 55–90 kW |
For pharmaceutical applications, type 14–175 is used for dry granulation of the tablet mass before tabletting. Pelleting keeps the mixture homogeneous and reduces dust emission.
Joining fine particles into larger, more readily soluble granules.
Applying a protective or functional layer onto the particle.
Removing moisture while the particles float continuously in a stream of air.
Enclosing the active substance in a shell for controlled release.
Drying and joining in a single pass, typical for instant products.
Building the granule layer by layer to the required size and density.
Send us a description of the product, the required granule diameter and the capacity, and we will come back with a proposed solution within 24 hours.
