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Rotary Drum Dryer

Materials: printing and dyeing sludge
Production range: 1 to 5 t/h
Input moisture of materials: 25% to 80%
Applications: domestic sludge, sludge of sewage disposal plants, forage and biomass;

Sales Hotline:

0086-18539990967

Technical introduction

Materials are sent to hopper by belt conveyor or bucket elevator. Then, materials are sent into feeding side through the feeding pipe. Feeding tube inclination angle is greater than the natural materials for smooth flow of material. In the process, wet materials get the heat given by heat carriers directly or indirectly in the process of moving forward, which makes materials get dried further. A shovelling plate is equipped in the tube wall. The function of the shovelling plate is to lift materials constantly so that the contact between materials and air flow is improved. Then, drying rate and drying process get promoted. Exhaust air is generally divided into hot air and flue gas. Generally speaking, cyclone dust collector is needed to collect materials in exhaust gas. If further process is needed to reduce dust content, exhaust air should enter the bag filter or wet dust emissions. Even sometimes mutillevel dust control system is required before exhaust air is emissed.
1. Can be applied to chemical, mine and metallurgy industries; can be used to dry large materials such as mine, blast furnace slag, coal, metal powder, phosphate fertilizer and ammonium sulphate.
2. Can be applied to powder and granular materials which has special requests on disposal methods, such as HP foaming agent, lees, light calcium carbonate, active floridin, megnetic particle, black lead and dregs of a decoction. 

Advantages

High level of mechanisation; high production capacity;
2. less resistance while fluid passes through the rotary drum; low functional consumption;
3. can adapt to different special quality of materials;
4. stable operation; low operation expenses; good uniformity of products; 

Working principle

Materials are sent to hopper by belt conveyor or bucket elevator. Then, materials are sent into feeding side through the feeding pipe. Feeding tube inclination angle is greater than the natural materials for smooth flow of material. In the process, wet materials get the heat given by heat carriers directly or indirectly in the process of moving forward, which makes materials get dried further. A shovelling plate is equipped in the tube wall. The function of the shovelling plate is to lift materials constantly so that the contact between materials and air flow is improved. Then, drying rate and drying process get promoted. Exhaust air is generally divided into hot air and flue gas. Generally speaking, cyclone dust collector is needed to collect materials in exhaust gas. If further process is needed to reduce dust content, exhaust air should enter the bag filter or wet dust emissions. Even sometimes mutillevel dust control system is required before exhaust air is emissed.

Technical parameters

Model Direct heating downstreaming Direct heating downstreaming Direct heating reflux Direct heating refluex Compound heating Compound heating
Types of materials Mineral ore HP foaming agent Blast furnace slag Ammonium sulfate Phosphate fertilizer Coal
Handling capacity (kg/h) 1000 466 15000 20000 12000 5000
Initial moisture content (%) 30 13 6 1.5 5 6.5
Final moisture content (%) 15 0.3 1 0.1 0.1 0.1
Average size (mm) 6.5 0.05 4.7 0.5-1.7 0.5 5
Weight of material accumulation(kg/m3) 770 800 1890 1100 1500 750
Amount of hot blast (kg/h) 3900 5400 10750 9800 6500 16000
(oC)
Temperature of inlet air (Degree Centirade)
600 165 500 180 650 570
Temperature of outlet air (Degree centigrade) (oC)   42 100 70 80 75
Heating method Coal gas Steam type electric heating Heavy oil Coal hot air furnce Heavy oil Heavy oil
Coefficient of charge   6.3 7 7.5 7.8 18
Rotation speed (rpm) 4 4 3.5 3 4 2
Inclination 0.04 0.005 0.03 0.05 0.05 0.043
Number of shovelling plates 12 24 12 22 Outside the inner drum:8
Outside the inner drum: 16
6 12
Diameter of dryer (m) 2.0 1.5 2 2.3 Outer drum:2
Inner drum: 0.84
Outer drum:2.4
Inner drum:0.95
Length of dryer (m) 20 12 17 15 10 16
Driving power (kw) 22 7.5 15 11 11 15
 
 

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Sludge Reclamation

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Sales hotline:0086-18539990967

Address of headquarters:NO. 198, longding industrial zone, high-tech development zone, zhengzhou city, china

Email:vip@tdaxy.com

Zhengzhou Taida Group    Address:NO. 198,longding industrial zone,high-tech development zone,zhengzhou city,china    Sitemap