Dr.-Ing. Michael Jacob, Head of Process Technology Food, Feed & Fine Chemicals, Glatt Ingenieurtechnik, Germany, explains why fluid bed systems are key to producing specialty fertilizers.
From improving durability and flowability through dust reduction to a pronounced depot effect or a targeted nutrient supply via better active ingredient distribution, fluidised bed technology can deliver many benefits. The shape and size of the fertilizer granules can be determined within a defined range. The quantity of fertilizer components delivered to the soil can be adapted optimally, and significantly higher product qualities can be achieved. Solubility and protection against external influences can also be markedly improved. In addition, fluidised bed processing, which has been in use since the 1960's, is one of the most effective drying techniques. The technology is particularly suitable for the manufacture of products that require safe handling and dosing – whether this is a high performance fertilizer, an artificial fertilizer, or a standard fertilizer based on regular components or recycled raw materials. One of the most interesting advantages of fluidised bed technology is that all of the necessary production steps can be carried out in a single continuous process without interruptions or machine changes.
» World Fertilizer, Issue 01-02/2019 (Palladian Publications)