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You are here: Home1 / Fertilizer equipment2 / Fertilizer equipment3 / Rotary drum dryer

Rotary drum dryer

Table of Contents

  • Rotary drum dryer introduction:
  • Advantages of Rotary drum dryer:
  • Rotary drum dryer drying principle:
  • How to improve the effect of Rotary drum dryer:
  • Tianci Rotary dryer manufacturer:

Rotary drum dryer introduction:

Rotary drum dryers are mechanical equipment used to reduce the moisture content of materials. They are widely used in many different industries and involve removing moisture from materials; the structure of these machines includes containers or drums that rotate the material inside and the moisture evaporates through the airflow. The machine is also associated with a filter that constantly flips and shuffles the material to better dry the material.

Advantages of Rotary drum dryer:

The machine is characterized by high productivity and easy operation. A rotary drum dryer cylinder is a horizontal rotating cylinder, it is welded from front to back with a staggered arrangement of different types of copying plates, the rotating kiln body is inlaid with different types of refractory bricks according to requirements, and the feeding end is designed to prevent dumping. There are a door ring and a spiral copy board. The choice of a Rotary drum dryer has the advantages of reasonable structure, excellent production, high output, low energy consumption, and convenient operation.

Rotary drum dryer (4)

Rotary drum dryer (4)

Rotary drum dryer drying principle:

The material is fed into the rotating cylinder with a certain inclination from the feed port. The added material is rotated in the bed by the rotating movement of the cylinder and the up and down movement of the copy board, while rotating in the bed, and moving towards the outlet side. The hot air passes through the material layer through the small holes on the cylinder wall and the small holes on the copy board. During the movement, the material is in direct contact with the hot air at an angle of 90° to carry out heat and mass transfer to achieve dehydration and drying. As the material rises and falls with the plate, the exposed area of the material is large, and the contact area with the hot air is constantly updated. The distance between the hot air inlet and the outlet is only the diameter of the cylinder so that the moisture inside the particles migrates to the surface quickly The vaporization is discharged in time. Therefore, the drying speed is fast and the drying is uniform.

Rotary drum dryer (3)

Rotary drum dryer (3)

How to improve the effect of Rotary drum dryer:

During the use of a rotary drum dryer, if the firepower is not enough, it will affect the drying effect of the dryer. For Rotary drum dryer, it is more important to solve the problem of insufficient firepower during use:

  1. The calorific value of the fuel in the dryer is changed, and the external fuel of the dryer is added appropriately. If the calorific value of the current fuel is higher than the heat generated by the original fuel combustion, the increase in fuel can be reduced, and vice versa. The amount of fuel added to the Rotary drum dryer equipment keeps the heat balance in the Rotary drum dryer;
  2. Reasonably control and adjust the ventilation volume for the air brake of the dryer. When the ventilation volume is too large, the air damper should be lowered in time to ensure that the entire firing zone works in a positive pressure environment. If necessary, the air intake at the bottom of the billet stack needs to be controlled to reduce the back air. After lowering the air damper, the equipment should be controlled. Add dry fuel with low water content. After the temperature in the dryer device returns to normal, the air damper will be gradually increased to allow the front fire to develop, and the ventilation will accelerate the fuel combustion and increase the internal heat. When the ventilation is too small, the height of the air dam should be increased so that the front part of the firing zone is in a negative pressure environment, and the rear part is calcined in a positive pressure environment. At the same time, maintain the air intake at the heat preservation position and the cooling position to improve the fuel combustion quality and heat exchange efficiency, and eliminate the lack of fire in the dryer.
  3. To detect the temperature in the Rotary drum dryer, accurately judge the temperature according to the changing trend of the temperature, and control is based on the amount of external fuel added. Ensure that the external fuel addition is carried out in accordance with the principle of multiple and small amounts to avoid the phenomenon of excessive or too little fuel addition that causes the temperature rise to reach the standard or incomplete combustion.
Rotary drum dryer (1)

Rotary drum dryer (1)

Tianci Rotary dryer manufacturer:

The advantage of the Rotary drum dryer is that it can be used to dry different materials with few adjustments. For example, the drying length of the material can be selected, or the temperature can be selected depending on the nature of the material. Tianci Heavy sells various types of rotary drum dryers, and can also choose the model that suits you according to customer requirements.

April 15, 2021/0 Comments/by Tianci Heavy
Tags: Fertilizer dryer
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