Real-Time Monitoring System to Determine Wear of Grate Ribs in Semi-Autogenous Mills, to Detect Clogging Conditions of the Grates During the Operation and to Detect Working Conditions Under Direct Impact of the Balls on the Grates

A method to calibrate the real-time monitoring system to monitor the wearing in the thickness of the ribs (5) of a grate (1) of a SAG mill (9) due to the abrasive action of the ore pulp residing inside the mill and due to the action of the grinding elements during the operation, and which in certain cases also generates obstruction of the slots (4) due to the jamming of said grinding elements inside the slots (4) while the mill is running, and said grate (1) has a screening surface (2) that includes a pulp lifter (3) and an external surface (7) that is not exposed to impacts, and also includes a central trough (6) where the supporting elements fit and which allow securing the grate inside the mill through fitting bolts (12), WHEREIN said method includes the following stages:

• a) Submitting the ribs (5) of the grate (1) to impacts using a ball (26) that is used in the mill (9), wherein the vibration produced by the impact is registered by the sensor (16) which transmits the signal captured to a sensor adaptor unit (17) and to a wireless transmitter (18), and said transmitter outputs the signal that is received by a wireless receiver (20) connected to a signal reader (21).
• b) Recording the signal using the signal reader (21);
• and
• c) Correlating said signal with the rib thickness (5).