Spray Dryers for all minute particles

Drying is a process of producing dried particles or powder from liquid with the help of hot gas. The raw material which is used in drying process is called liquid feedstock which includes emulsions, solutions and pumpable suspensions. These final particles are generally used in chemical and ceramic products (Paint Pigments, Catalyst support); food & dairy (milk powder, colouring, eggs, flavours, spices, vitamins and starch) and pharmaceutical products (Additives, Antibiotics and medical ingredients). Drying process differs according to the raw materials used in it. Some materials take much time to dry than others and thus different processes are being used for it. Spray Dyers, in the process uses either atomizer or nozzles to make particles which are collected in a cyclone or drum. Calculates heat and moisture is required to make particles of desired requirement. It is made through passing the liquid through the nozzles into a hot vaporised area where liquid is converted into small powdered form or in particles.

Dryers manufacturer in India produce different kinds of dryers as required by their customers. Some of the popular dryers used in the industry are:

·         Spray Dryers: These are used to make small particles from a liquid solution. It can be water or any other solution. These dryers are largely used in food industry.

·         Rotary Dryers: These are used for breaking wet powder and cakes which can be easily dispersible and breakable like Silica Sand.

·         Continuous Fluid Bed Dryers: In this, air is passed through perforated plate at an adequate speed so that the load of the particles can be held. In the process, bubbles are being produced and collapse inside the chamber, which then become particles. These dryers are mostly used in Sugar, fertilizers, Aluminium or Metal Oxidization and Mineral-Sand Industries.

·         Paddle Dryers: These dryers use continuous revolving heated blades to make the particles. Mainly used in Magnesium Carbonate, Pastry Solids, Agro Waste and Sludge Industry.

·         Conveyer Dryers: In this. Wet or moist feed is placed on a perforated plate and then hot air is passed through it. This whole mechanism is insulated and fixed. Wood chips, Bagasse and Chemical Industry use these dryers.