ON THE DIFFICULTIES OF IMPLEMENTING PARTICLE-SIZE CONTROL IN PARTICULATE PROCESSES

This paper presents an overview of the difficulties in implementing pa rticle size control in particulate processes. Such difficulties are mo stly related to the complex interactions of process variables on parti cle size. Some ideas are given on the use of existing measuring device s and controlling actuating mechanisms in particulate processes. Durin g recent years rapid developments of both devices and techniques have emerged that allow the control of one or two size variables with very good economic results.