The Widely Uses of Rotary Drying Machine in Various Materials

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The rotary drying machine is widely used to dry various materials in the mineral industry such as sands, ores, fertilizers, wood chips, coal, limestone, stones and soil, iron sulphate, filter cakes, sewage sludge, etc. The gas stream can be made up of a mixture of air and combustion gases from a burner, in which case the dryer is called a direct heated dryer. Alternatively, the gas stream may consist of air or another (sometimes inert) gas that is preheated. Rotary drying machine are known as the workhorse of industrial dryers.

Configurations for direct drying, dehumidifying or cooling are equipped with a material intake chute configured with ports for the purpose of introducing heated or cooled air directly into the batch. The chute slides out from the machine, allowing unrestricted access to the interior of the vessel for rapid, thorough wash down.

Direct rotary drying machines are the most versatile and simplest form of drying. The kilns specifications are determined by the material, how much drying, and how long must it be in the drying process. These dryers are suited for material that are not required to be isolated from a burning system. They are able to process a wide variety of materials, and can lend a hand in nearly any industry requiring industrial drying solutions.

In this case, the heater warms a second gas which enters the drum while any combustion gases remain separate. This form of dryer is the most likely for an average person to encounter, as it is the kind commonly used to dry clothing. Co-current is suitable for materials with relatively high moistures and provides rapid evaporation without overheating the product. Counter-current has the greatest thermal gradient and helps achieve low product moistures.

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