Which feeder for which application
The principle of feeding volumetrically starts with keeping the screw full. The effectiveness and accuracy are strongly dependent on a constant and homogeneous filling of the dosing screw.
This method provides consistent, repeatable metering with linear control with materials that are considered “good” powders. A good powder has a consistent bulk density, and manageable characteristics.
Volumetric feeding falls short of capacity requirements when a material has a varying bulk density. Material that can vary widely in bulk density within a batch will struggle to meet dosing requirements with a Volumetric feeder.
Choosing the right feeder for your application is important to the cost and quality of the output of your facility. The basics are outlined here, speaking with a bulk material handling expert form our company to design the optimal system for your application is important to achieving quantifiable savings in the long-run.