Working Principle

Hot air enters the annular gap at the bottom of the drying chamber tangentially and rises spirally. Meanwhile, materials are fed quantitatively into the tower by the feeder and fully exchange heat with hot air. Larger and wetter materials are mechanically crushed by the agitator. Materials with low moisture content and small particle size rise together with the rotating airflow and are conveyed to the separator for gas-solid separation. The finished product is collected and packaged, while the tail gas is discharged after treatment by the dust removal device.

Equipment Advantages

The drying chamber features high circumferential air velocity and short material residence time, which effectively prevents material wall sticking and deterioration of heat-sensitive materials. It can produce uniform powdered products in a single drying step, eliminating crushing, screening and other processes.

The drying chamber is equipped with a classification ring and swirling vanes, allowing adjustable material fineness and final moisture content. The special air distribution device reduces equipment resistance and greatly improves the uniformity of material drying.

A special cooling device and air pressure seal are arranged at the bottom of the dryer to avoid material deterioration in the high-temperature zone at the bottom.

It can effectively control final moisture and fineness. Adjustments to feeding rate, hot air temperature and classifier ensure consistent moisture content and fineness of the finished product.