It is common to find that materials that are similar in particle size and bulk density actually convey very differently. Therefore it is important that materials are tested extensively to ascertain what is the most effective and efficient means of transporting a material.
The behaviour of different materials in either lean phase or dense phase conveying systems can be extremely difficult to predict. This is due to the energy needed to move the particles. The particle mass also depends on different variables, including:
- Mean particle size
- Particle size distribution
- Particle density
- Bulk density
- The ability of the material to trap and retain air
- Particle shape
- Moisture content
- Particle concentration
- Particle velocity
- Pipeline length
- Pipe bend radius
- Whether pipes are run vertically or horizontally
The Schenck Process TestCenter is able to determine the performance and behaviour of material within a live pneumatic environment. The process delivers limit values which can be reliably applied to the tested scenarios. Particular importance is attached to the material description and conveying performance.
The material description determines how easily a material can be transported and establishes the boundaries for which conveying data is valid. Particle density, bulk density, mean particle size and particle size distribution provide excellent indicators as to how a material may convey.
Conveying performance means how a material can be conveyed under particular conditions (e.g. conveying distance and pipe routing). To allow different system sizes to be simulated in a realistic manner, the Schenck Process TestCenter has pipes of various sizes (25 to 100 mm) and various conveying distances (10 to 500 m) with between 2 and 31 pipe bends.