ANGLE-BASED METHOD AND DEVICE FOR PROTECTING A ROTATING COMPONENT

摘要

An angle-based method and device to protect a grinding mill used for grinding material therein by rotating the drum so that the material adheres to the drum inner surface and rises therewith over a cascading angle from a gravity- balanced condition prior to detach by gravity from the inner surface and tumble into a cascading flow. The method is used for protecting the grinding mill from damages potentially resulting from the material agglomerating into a general ly solidified lumped volume that could adhere to the inner surface and rotate with the latter more than the cascading angle to a fall angle wherein the lumped volume may detach from the drum inner surface and impact an impact position within the drum, The method includes the steps of assessing for the presence of material adhering to the inner surface upon rotation of the drum by more tha n the cascading angle; and initiating an action to stop the rotation of the drum upon determination of material adhering to the inner surface upon rotation of the drum beyond the cascading angle.