Single-drum rotary dryer, also known as rotary drum dryer or single-drum horizontal dryer, is mainly based on heat conduction and the removal of wet air and moisture from objects through a series of steps. The following is a detailed analysis of the working principle of the dryer:

Working principle of single-drum rotary dryer

1. Hot air generation: The hot air furnace device is started to generate high-temperature hot air. This hot air is sent into the drying drum through the air duct.

2. Material input: The wet material is put into the drying drum through the feed chute.

3. Rotary drying: The drying drum starts to rotate under the drive of the motor, and the material rolls and scatters in the drum as the drum rotates. In this way, the material can be fully exposed to the hot air and exchange heat with the hot air, thereby evaporating the moisture in the material.

4. Hot air circulation: After the hot air exchanges heat with the material in the drying drum, it carries a large amount of water vapor and impurities. This hot and humid air is discharged through the exhaust system and processed by the dust collector to remove impurities and dust.

5. Finished product collection: After a period of drying, the moisture in the material is evaporated, achieving the expected drying effect. At this time, the unloading device of the drying drum started to discharge and collect the dried material.

Single-drum rotary dryer is widely used in many fields, such as food, chemical, pharmaceutical, and agriculture, as well as building materials, metallurgy, mineral processing, and other industrial sectors. It can dry various materials, such as slag, river sand, clay, coal powder, metal beneficiation leaching slag, etc., with low feed moisture requirements, compact structure, easy installation, reliable operation, low energy consumption, high thermal efficiency, and other advantages.

Single-drum rotary dryer is an efficient and reliable drying equipment with a simple and effective working principle, which can meet the drying needs of various materials.