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Rotary drum dryers are very useful for industrial production because of their large production capacity and adaptability. Although the drying work and the cooling work in the rotary drum dryer are isolated and operated in the same machine, it is very convenient to use. The following Xiao Bian and everyone together to learn about the knowledge of the rotary drum dryer.
Rotary cylinder dryer structure
Direct Heat Transfer Dryer This type of dryer has a heat carrier that is in direct contact with the material to be dried. It is mainly convectively heat-transferred and has a high thermal efficiency and is most widely used.
Indirect heat transfer dryers Indirect heat transfer dryers can be used when the material being dried is not intended to be in direct contact with flue gas or hot air or hot air. In such dryers, the heat carrier is not in direct contact with the material being dried, and all the heat required for drying is transferred to the material to be dried through the heat transfer wall.
Duplex Heat Transfer Dryer A part of the heat of the dryer is transferred from the drying medium through the heat transfer wall to the material to be dried, and the other part of the heat is transferred from the heating medium directly to the material. It is a heat conduction and convection heat transfer. Combination, high thermal efficiency.
The steam calcining dryer steam calcining dryer is used in the case of heavy alkali calcination. In a steam calcine field calcining drier, calcination is performed on the one hand and drying is performed on the other. There is no self-return device. The heat is obtained by heating the finned tube provided in the rotary cylinder. High heat transfer coefficient, thermal efficiency can reach 75%, evaporation strength is 150kg water m3.
Spray granulation dryer spray granulation dryer is the product drying and granulation completed in a rotary cylinder, the slurry is injected into the cylinder by the nozzle, the cylinder body is provided with a return spiral plate, so that the finished product itself Material and reduce the multiple return, simplify the process, reduce equipment load, increase equipment production intensity. Spray granulators are used in the production of ammonium phosphate, nitrogen and phosphorus, and nitrogen, phosphorus, potassium phosphate and heavy superphosphate.
Rotary cylinder dryer features
Large production capacity, continuous operation.
The structure is simple and easy to operate.
Less failures, lower maintenance costs.
Widely used, it can dry granular materials, paste materials, and even liquid materials.
Operational flexibility.
Easy to clean.
Rotary cylinder dryer application
1. It is applicable to the drying of large particles and heavy materials in the chemical, mining, and metallurgical industries. Such as: ore, blast furnace slag, coal, metal powder, phosphate fertilizer, ammonium sulfate, ammonium sulfate, ammonium nitrate, building materials, light industry and other departments, sodium sulfide, Anfu powder, urea, oxalic acid, potassium dichromate, polyvinyl chloride, two Oxygen is divided into manganese, ammonium carbonate, nitrophosphate, calcium magnesium phosphate, phosphate rock, general calcium phosphate, calcium superphosphate, trisodium phosphate, sodium tripolyphosphate, etc., and used in rotary cylinder dryers.
2. Drying of powdered and granular materials with special requirements. Such as: HP foaming agent, sprinkling fine residue, light calcium carbonate, activated clay, magnetic powder, graphite, dregs.
3, requires low-temperature drying, and the need for large batches of continuous drying of materials.
The main components of the rotary cylinder dryer include seal components, lifting plate components, rotating body components, transmission components, and the like. When the dryer is in use, it will be placed at a slight incline angle with the horizontal direction. The product is poured into the cylinder from the higher end of the cylinder. During operation, the product moves to the low end as the cylinder rotates. The purpose of processing the product. The use of a rotary drum dryer is less expensive and consumes less fuel than a typical dryer.
The above is a brief introduction for Xiaobian. If you want to know more related information, please continue to pay attention to Qijia Consulting. More exciting consultation, please stay tuned.
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