Trialling a Wet High-Shear Mixer Granulator With Your Own Powder
A buyer's guide to planning a demonstration of a wet high-shear mixer granulator using the buyer's own powder, with practical questions for the trial and acceptance test.
Ask the supplier to run the demonstration on your own powder rather than a generic placebo blend. A granulator can behave very differently with your material, so the trial should show how the machine handles your powder at the working volume you intend to use.
For a unit with a 100 L total bowl volume and 60 L working volume, agree the fill level for the trial and ask whether the impeller speed range of 140–270 rpm covers the granulation end point you need. Request that the same batch be sampled at several impeller speeds and mixing times, and ask how the supplier will judge granule uniformity and reproducibility. Clarify binder addition method, batch-to-batch cleaning between runs, and how scale-up from the trial batch will be handled.
Build the acceptance test around your own material: specify the batch size, impeller speed settings, mixing duration, and the tests you will use to accept the output. Ask for the trial report to record actual settings and observations, not just a pass or fail.
Before requesting a quote, confirm with the supplier that the demonstration will use your powder, what quantity you must supply, which bowl and impeller configuration will be used, and how results at the stated volumes and speeds will be documented.