The process begins when pulp enters through the feed inlet. The cycloning then begins taking place in the feed chamber. The heavier particles move to the outer walls, and the apex. This is known as underflow. The lighter particles stay near the center of the cone and are carried by the vortex, which is called overflow.
The inspection process for this reliability issue was very simple with the help of a permanent monitoring system. SDT techs first attached a RS2T sensor to each of the 6 hydro-cyclones. We then used the ultrasonic signals produced during the cycloning process to determine if one of the following was occurring:
• Small particles (normal condition)
• Large particles (sanding condition)
• Without Flow (clogging condition)