How to determine the speed of rotation of the rotary granulator drum in accordance with your production needs?

Speed drum granulator It is impossible to install, based exclusively on experience. You need to accurately calculate the speed, Given the three main technical factors. Then set the speed:

The key parameters are the angle of natural sloping of the material (defining the critical threshold of sliding and rolling in the drum) And density (influencing centrifugal force, acting on the material). Materials with a small angle of natural sloping (For example, less than 30 °) and high density require a slightly higher rotation speed (12–15 rpm) To ensure a sufficient turn of materials. Materials with a large angle of natural sloping (For example, more than 45 °) and low density should have a rotation speed of 5-8 rpm. This prevents the destruction of particles, caused by excessive mixing of the material.

The diameter of the drum is inversely proportional to the speed of rotation. According to the industry technical formula, “The optimal rotation frequency = 42.3/√ Drumener of the drum (m)». For example, For the drum with diameter 2,2 m The optimal rotation frequency is approximately 42.3/√2.2.2 ≈9 rpm. For the drum with diameter 3,0 m The optimal rotation frequency is approximately 42.3/√3,0≈7.7 rpm. This formula can be used as a basic reference information to configure the speed of your drum granulator.

If you need to get small particles (1-2 mm), The speed of rotation can be appropriately increased (10-12 rpm). High -frequency collision is used to stimulate the formation of small particles. To obtain large particles (3–5 mm) rotation speed should be reduced to 6-8 rpm. It is necessary to give the material enough time for agglomeration on the principle of "snow coma", to prevent particles crushing.

More information about the rotary drum granulator can be found on the site:https://www.sxmashina.com/granulyator-s-vrashchayushchimsya-barabanom/

Production of drum granulators