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China Suppliers HZG Series Direct Heating Rotary Drum Dryer - Reliable Factory Equipment for Ferrite Powder and More
Principle
Waste heat air or heat exchange air enters the rotary dryer and directly exchanges heat and mass with wet sludge in the channel. It is equipped with a special crushing device (specially designed structure) to quickly evaporate the water in the sludge. The smaller sludge particles are discharged from the dryer and collected together with the gas through the outer channel, while the larger sludge particles stay in the dryer for a longer time until drying is completed. Partial exhaust gas is extracted and treated by a deodorizer to meet atmospheric emission standards (or cooled by water foam dust removal) before being discharged into the atmosphere.
Characteristic
- To prevent material blockage, a scraper is welded to the drum to form a moving blade, and most of the material is forcibly stirred and sent away by a spiral guide plate, ensuring a smooth feeding process.
- The drum is designed with different inclinations based on the material's condition to ensure smoother discharge.
- The machine has a simple structure, reliable operation, easy maintenance, and can achieve continuous large-scale production. It can also comprehensively utilize waste gas operations.
- Install exhaust gas collection and treatment devices according to different requirements.
Applications
- According to the characteristics and status of the sludge drying process, different dispersion and crushing devices are used in sections to greatly improve the drying efficiency.
- Using special sealing materials to ensure sealing effect and greatly improve service life.
- The bearing adopts a cooling device to reduce the operating temperature of the bearing and extend its service life.
- Indirect heating can be used to reduce exhaust air volume and improve heat utilization efficiency.
- Adopt different sheet cutting forms according to different states of materials to reduce the degree of bonding.
- Adopt different feeding methods based on material characteristics to prevent blockage of the feed.
Technical Parameters
| HZG SERIES DIRECT HEATING ROTARY DRUM DRYER | ||||
| Drying Condition | Primary moisture content ％ | 80 | ||
| Final moisture content ％ | 40 | |||
| Product temperature ℃ | 90 | |||
| Inlet air temperature (equipped with furnace) ℃ | 500 | |||
| Outlet air temperature ℃ | 100~130 | |||
| Parameters | Feeding capacity t／d | 50 | 100 | 200 |
| Evaporation amount t／d | ~33 | ~66 | ~132 | |
| Output capacity t／d | ~17 | ~34 | ~68 | |
| Model | ø1500x12000 | ø2000x16000 | ø2800x20000 | |
| Installation power kw／h | ~70 | ~110 | ~200 | |
| Over all size (for reference) mm | 24000x3500x5500 | 34000x4000x6500 | 44000x5000x8500 | |
Product Display
Frequently Asked Questions
How does the HZG series rotary drum dryer process wet sludge?
The dryer utilizes waste heat or heat exchange air that directly contacts the wet sludge. A specialized crushing device breaks down the sludge to accelerate water evaporation, allowing smaller dried particles to discharge while larger ones remain until fully dry.
What mechanisms prevent material blockage inside the dryer?
To ensure continuous feeding and prevent blockage, a scraper is welded to the drum to form a moving blade. Additionally, a spiral guide plate forcibly stirs and moves the material through the system.
How does the dryer handle exhaust emissions?
A portion of the exhaust gas is captured and processed through a deodorizer to meet atmospheric safety standards, or it is cooled and treated using a water foam dust removal system before release.
Can the system be adjusted for different material properties?
Yes, the drum's inclination can be adjusted based on the material's condition. The system also adopts different sheet cutting shapes and feeding methods to reduce bonding and prevent feed blockages.
What are the technical capacity limits for the HZG Series?
Depending on the model (ranging from ø1500x12000 to ø2800x20000), the feeding capacity ranges from 50 to 200 tons per day, with evaporation rates between 33 and 132 tons per day.
What measures are taken to extend the lifespan of the equipment?
The system features specialized sealing materials to enhance durability and a cooling device for the bearings to lower operating temperatures, significantly extending their service life.