Gyratory motion rapidly distributes, stratifies and separates. This unique gyratory motion pattern imparts a combination of actions to the material as it passes along the screen surface. It begins with a horizontal circular motion at the feed end, gradually diminishing along the length of the machine to an elliptical path, and finally to an approximate straight-line motion at the discharge end. There is no vertical component to this motion – thus keeping the material in constant contact with the screen surface.

DISTRIBUTES: Circular Motion at the Feed

The gyratory motion at the feed side of the machine immediately spreads the material across the entire width of the screen surface to maximise screen utilisation. At the same time, this motion stratifies the material, causing the fines to sink down against the screen surface. The particles that are appreciably smaller than the openings quickly pass through at this part of the screen.

STRATIFIES: Changing to Elliptical Motion at the Centre

As the circular motion diminishes into an elliptical path, the gentle near-horizontal motion causes the fine particles closer in size to the screen mesh – the near-size particles – to fall through the mesh openings.

SEPARATES: Straight-Line Motion at Discharge End

The nearly linear reciprocating motion at the discharge end of the iBulk Rotex Screener removes those particles closest in size to the mesh openings while gently conveying the oversized material off the screen. In addition, the unique iBulk Rotex ability to advance or retard material flow at the discharge end allows further separation fine-tuning to achieve the most efficient and accurate motion for the application.