Discussion created on 03/15/2020

Particle average size adjustment in roller and hammer mills. Automatic calibration methods.

Hello everyone. We hope you are well. I would like to know if any of you have documented the procedure or recommendation for adjusting the average particle diameter at the outlet of a roller or hammer mill. At Farmonitoring Agrotech (startup) we are developing the image processing granulometry method, which can obtain average size in 3 minutes. We have obtained differences of less than 30 microns with respect to the normal sieving method. What we want to improve now is the adjustment or calibration of the mills. We have seen manual adjustment methods. The idea is to add to the measurement of the average particle diameter, a method that allows predicting the error or detecting a priori that the mill is decalibrating. We have analyzed some recommendations provided by the manufacturer CPM regarding controlling the RPMs of the mills. They indicate that most mills from other brands rely on their developments and innovations. Do any of you have experience in how to improve the particle diameter calibration or have implemented some automatic adjustment method, without having to manually or humanly intervene the mills? Hopefully you can share your experiences. Regards. Juan Llanos Farmonitoring Agrotech.

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Kurt A. Rosentrater
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