Paddle dryer is a dryer that allows materials (organic, inorganicparticles or powder material) to be directly contacted with a rotatinghollow wedge-type heating part for heat transfer. It does not requireair as a heating medium, the air used is only a carrier to take vaporout.

Paddle type dryer is a kind of heat conduction-based horizontalmixing dryer, the main structure is a jacketed W-shaped shell with apair inside low-speed rotating hollow shaft, the shaft is welding anumber of hollow mixing blade, jacket and hollow stirrer are passedthrough heat medium, and the two heating surfaces dry materials atsame time. Therefore, the machine has a prominent heat transferrate than general conduction dryer. Biaxial or multi-axis type can bedesigned according to actual needs.The hot air is usually fed from the middle of dryer and dischargedfrom the other side through the surface of material layer in theagitated state. Heating medium can be steam, hot water, or hightemperature heat transfer oil.

• Typical conduction drying method and high thermal efficiency, it saves 30%to 60% or more than the usual convection drying energy.
• As there is steam into stirring paddles too, the dryer has bigger unit volumeheat transfer area than normal indirect heat transfer dryer.
• The hollow wedge paddles rotate in opposite directions, and the two slopes ofthe blades are repeatedly agitated, compressed, relaxed and pushed forwardmaterials. This opposite movement gives the foliage a unique self-cleaningeffect, and the heating surface is constantly updated to keep heating coefficienthigher than any other conduction drying methods.As the heating surface has a unique self-cleaning effect, it can successfullydeal with most of high water or viscous paste materials, the scope of applicationis wider than general conduction drying equipment.
• As all required heat is offered by the hollow paddle and jacket, in order toreduce exhaust humidity, only a small amount of hot air will be added, dustentrainment is very little and exhaust treatment is easier.
• Material retention time is easy to adjust, it can handle high water content, andget final product with very low water content.
• Dryer stock material volume is very high which is about 70 - 80% of cylindervolume, the effective heating area of unit is much higher than generalconductive drying equipment, the machine is compact with small size and small occupation.
• It can be easily combined with other drying methods to make efficient dryinguints, to play their respective advantages, achieve best economic and technicalindicators. Such as paddle-plate dryers combination to improve the integrateddrying efficient, paddle-steam rotary drum dryers combination to deal withlargely of high moisture or sticky material continuously.
• It can be operated under vacuum state, to recover solvent and to completeevaporation of the volatile material with high boiling point.

• Inorganic chemical industry: nano-superfine calciumcarbonate, calcium ink, paper calcium, toothpaste calcium,magnesium carbonate containing calcium carbonate, lightcalcium carbonate, wet active calcium carbonate, magnesiumcarbonate, magnesium oxide, magnesium hydroxide,phosphogypsum Calcium, calcium sulfate, kaolin, bariumcarbonate, potassium carbonate, iron black, iron yellow, irongreen, iron red, soda ash, NPK compound fertilizer, bentonite,white carbon black, carbon black, sodium fluoride, sodiumcyanide, Aluminum hydroxide, pseudo-water aluminum,molecular sieves, saponin, cobalt carbonate, cobalt sulfate,cobalt oxalate and so on.
• Organic Chemical Industry: Indigo, Dye Organic Red, Dye Organic Yellow, Dye Organic Green, Dye Organic Black,Polyolefin Powder, Polycarbonate Resin, High (Low) DensityPolyethylene, Linear Low Density Polyethylene, PolyacetalGranules, nylon 6, nylon 66, nylon 12, acetate fiber,polyphenylene sulfide, propylene-based resin, engineeringplastics, polyvinyl chloride, polyvinyl alcohol, polystyrene,polypropylene, polyester, Acrylonitrile copolymerization,ethylene-propylene copolymerization, and the like.
• Smelting industry: nickel concentrate powder, sulfurconcentrate powder, copper concentrate powder, zincconcentrate powder, gold anode mud, silver anode mud, DMaccelerator, tar off the phenol and so on.
  Environmental protection industry: urban sewage sludge,industrial sludge, PTA sludge, electroplating sewage sludge,boiler soot, pharmaceutical waste, sugar residue, monosodiumglutamate plant waste, coal ash and so on.
• Feed industry: soy sauce residue, bone feed, lees, foodunder the material, apple pomace, orange peel, soybean meal,chicken bone feed, fish meal, feed additives, biological slagand so on.
• Food, medical industry: starch, cocoa beans, corn kernels,salt, modified starch, drugs, fungicides, protein, avermectin,medicinal aluminum hydroxide, penicillin intermediates, Dengsalt.