Toshniwal Mixer cum Dryer is a modification of the mixer design into a drying unit. It is especially suitable for powder products, granulates and filter cakes. The product is dried by mixing energy and product in the best possible way. The mechanical fluidisation ensures that all particles are surrounded by the drying medium (cold/ warm/ hot air, inert gas etc.) and an effective transmission of energy occurs. Moisture is thereby extracted from the product. The reliable and repeatable process gives the same perfect quality product for each batch.
Open System: The drying system is designed as an open system where the ambient air is blown in to the drying system. The air is warmed up in a heater then blow into the drying chamber and the hot air is inserted on both side towards the paddles in the dryer. The paddles will bring the air through the material and up in the fluidized zone where the particles can be lifted and create a larger surfact area which will increase the drying rate. The most air will be blown out of the dryer with fine particles which are then collect in the filter bags, kept in the exhaust side of the dryer.
Close System : Heated air is blow into the mixer and mixed with moist product. During the heat exchange, the moisture will evaporate from the product. Moist air passes through the filter before it is sucked into the fan. The air is thereafter blow through the cooler for condensation before it is reheated. When drying very moist products the wet product is mixed with dry product first to ensure that the fluidisation and the high drying rate is maintained.
No local overheating
No local overdrying
Low drying temperature possible
Good correlation between product temperature and exhaust temperature
The integrated mixing technology always ensures a homogeneous batch