Mixing is one of the basic processes in bulk material technology. At the same time, it is the most difficult, especially for non-homogeneous materials and for the requirement of a continuous process. We look for the most economical solutions, so – if possible – we put the material into a fluidized state. In other cases, we try to use one drive to cause movement in different directions, often opposite ones, to achieve the best possible effect.
By using the Discrete Element Method (DEM) to simulate the homogenization process of bulk materials, we can analyze the degree of mixing of different materials – exactly those that will be used in your installation.
Screw mixers are based on a special shape of mutually interpenetrating spirals. They are suitable for materials of various sizes and densities, with continuous mixing associated with transport. Single- and twin-shaft screw mixers can be used in bulk material dosing processes – wherever it is necessary to pre-mix non-homogeneous components. They enable continuous and batch operation, have high efficiency and can work in a multi-stage system.
Our innovative solution enables both chamber (batch) mixer operation and continuous operation. This is due to the arrangement of mutually interpenetrating spirals with counter-rotating working directions.
Screw mixers (BKSM) are designed based on the simulation of homogenization of bulk materials using the discrete element method (DEM).
Single-shaft batch mixers are ideal devices for achieving the highest quality mixes while maintaining repeatable raw material inputs. The construction of batch mixers is simple, however, the mixing process itself is quite complicated.
The blade or shovel type tools rotate as mixing tools in a special arrangement on the mixer shaft in a horizontal cylindrical drum. The result is a swirling of the mixture, which constantly draws all the product particles into the mixing process. The formation of dead zones or slow movement in the mixing drum is avoided, which ensures thorough mixing of the raw materials. In some cases, separately driven high-speed knives can be installed to achieve the required mixing effect.
The operation of the horizontal single-shaft mixer for batch operation is based on the principle of mechanical fluidization of the mixed product.
The special shape, position and speed of rotation of the mixing tools generate a centrifugal vortex motion, which allows three-dimensional movement of the material and its combination with the rest. This ensures that components with different particle sizes and bulk densities are perfectly homogenized and mixed with high precision in the shortest possible time.
Batch mixers are used for mixing dry powders, granulates or short fibers, for wetting, caking and granulating the same materials or for mixing low viscosity liquids and pastes.
Intensive mixing differs significantly from standard industrial mixing methods.
Intensive mixing devices must have a much more durable design and increased power. The mixing process takes place at an increased speed, where part of the energy is converted into heat as a result of friction. The optimal shape of the mixers is selected individually using digital DEM simulations, thanks to which the intensive mixers manufactured by BIKO SERWIS cause ideal circulation of the mixed product. The mixer tank can be equipped with a heating or cooling jacket depending on the requirements of the production mixing process.
