Three pass rotary dryer for drying garnet sand

Three pass rotary dryer are also called 3-cylinder rotary dryer. It adopts the latest energy saving technology with embedded type structure. Inner cylinder, middle cylinder and outer cylinder form a self insulation structure. Thermal insulation material and stainless steel plate covered the drum, which effectively reduce heat loss and improve the thermal efficiency. 

Three pass rotary dryer is suitable for drying garnet sand massively. After being dried, the moisture content of the garnet sand can be less than 0.5-1%. Dry garnet sand is widely applied in kinds of industrial area, such as blast sand, free abrasive material, Resin-bonded grinding tool, Coated abrasive, Filtering medium, Liquid cutting etc.

How does three pass rotary dryer dry garnet sand efficiently?

Let us to begin from working pricinple firslty.
1.Use belt conveyor to transport the garnet sand into the rotary sand dryer;
2.Hot air furnace supply the hot air for the garnet sand dryer;
3.Inside the garnet sand dryer, the wet garnet sand is heated by the hot air, and the moisture inside the garnet sand is evaporated into water steam;
4.High pressure draft fan suck out the water steam, which is goes into the atmosphere finally;
5.Dry garnet sand goes out through the discharge hole of the garnet sand dryer;
6.Cyclone dust collector separates the dust from the water vapour, and keep the working field clean;

Features of three pass rotary dryer

1.The three cylinder structure of the drying drum increases the contact area between the wet material and the hot air, which reduces the drying time by 48-80% compared with the traditional solution.
2. The overall size of the dryer is reduced by more than 30% compared to ordinary single-cylinder dryers, thereby reducing external heat loss.
3. Due to the compact installation, the floor space is reduced by 50% and the infrastructure cost is reduced by 60%.
4, It use roller wheel transmission instead of gear transmission to prolong the dryer service life.
5. The temperature of the finished product after drying is about 60-70 degrees, so that it does not need an additional cooler for cooling.

People also frequently asked for- FAQ

What are the different types of rotary dryers?

Rotary Dryer, Rotary Drum Dryers, Infrared Rotary Vacuum ...
The key classification of rotary dryers are as follows: Direct Rotary Dryer. Direct rotary kiln. Indirect steam-tube dryer.

What is sand drying?

Typically, sand is mined, washed and screened and stored in piles with various grades. The sand needs to be dried to the required moisture content before it can be sold or further processed. Silica sand is quartz that over time, through the work of water and wind, has been broken down into tiny granules.

What is a rotary drum dryer?

Rotary dryers work by tumbling material in a rotating drum in the presence of a drying air. They can also be indirectly heated to avoid direct contact between the material and processing medium. The drum is positioned at a slight horizontal slope to allow gravity to assist in moving material through the drum.