Sludge is the industrial waste generated during the production process of municipal sewage processing. Because sludge has many disadvantages such as high moisture content, high viscosity, high water holding capacity, and low calorific value, it is difficult to achieve industrial utilization. Dingli Company operated a series of technical researches on the current market situation of sludge treatment and the characteristics of sludge in various regions.
Dingli Company concentrating created a new generation of sludge rotary drum drying system, drying product moisture can be reduced to less than 25%, achieving the standard of sludge landfill and further incineration processing conditions. The technology of equipment gets absolutely mature enough, also it has a stable capacity for operation and very convenient to operate and maintain.
DINGLI Sludge Drum Dryer is mainly composed of a hot air furnace, scattering feeder, belt conveyor, rotary drum dryer, belt outlet conveyor, draught fan, dust collector, deodorant device, and electric cabinet.
About 80% of the moisture content for the wet sludge has stickiness. Before the drying process, it first enters three-roller belt-dewatering machines, and the sludge moisture is removed by about 55-60%. The moisture of the Sludge dropped to about 20-25% to dry out, and finally complete the whole drying process.
The new internal structure strengthens the cleaning and heat conduction of the dispersed material, eliminates the sticking phenomenon of the inner wall of the cylinder, and has stronger adaptability to moisture and viscosity of the material. By using the unique bulk sludge delay drying technology to ensure the uniformity of the slime drying.
Dingli sludge drying machine has a strong capacity against overload, the capacity of dealing with large amounts of processing, less fuel consumption, and low drying cost. The technology of equipment gets absolutely mature enough, also it has a stable capacity of operation and very convenient to operate and maintain.
| Equipment | Capacity（t/h) | Evaporation moisture capacity（t/h） | Moisture content of raw material（%) | Drop moisture content（%） | Drying Temperature (℃) | Total installation power（kw） | Total Weight (kg) | Spatial footprint(m²) |
|---|---|---|---|---|---|---|---|---|
| DLNG1412 | 5.4 | 1.2 | 55-60% | 20%（adjustable) | 850±100℃ | 65 | 25000 | 6m*18m |
| DLNG1615 | 6.6 | 1.9 | 115 | 48000 | 6m*18m | |||
| DLNG1916 | 13.5 | 3.0 | 138 | 67000 | 8m*24m | |||
| DLNG2218 | 19.8 | 4.4 | 170 | 85000 | 10m*24m | |||
| DLNG2518 | 25.6 | 5.7 | 240 | 92000 | 10m*30m | |||
| DLNG2522 | 31.5 | 7.0 | 320 | 110000 | 10m*36m | |||
| DLNG2823 | 41.4 | 9.2 | 450 | 150000 | 10m*36m | |||
| DLNG3430 | 80.0 | 17.7 | 680 | 265000 | 10m*48m |
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