DEMO DAY innowacji 4.0

Within the framework of the project, an innovative technology for granulation of mineral raw materials has been developed and a prototype granulation station has been created. The technology enables granulation of mineral mixtures (particle size below 0.5 mm) into quality granules.  The first stage of the technology is based on disc granulation. The second stage, after forming the granules, is carried out in the drum device, where the granules are hardened and dried. Granules made using this technology have a repeatable granulation and increased mechanical strength. The developed prototype station offers the possibility of granulating free-flowing mineral mixtures with the application of bonding agents in the form of liquid solutions. Moreover, it is possible to obtain layered granules, e.g. with a functional coating (e.g. with increased strength). The main innovation of the presented technology is the possibility to granulate mineral mixtures with a precisely defined geometry. This process is conducted in two stages with the possibility of introducing the so-called "pelleting" with an additional functional fraction in the second stage. The additional fraction allows for increasing the durability or obtaining the effect of delayed decomposition of granules in soil. In the second granulation stage, strengthening qualities are imparted to the granules. Apart from the pelleting process, the basic process is to increase the density by means of intensive turning in a stream of warm air. To achieve such quality features of fertiliser granules with a single production process is an innovative process solution.