During the ore comminution process, one of the relevant operational variables is the moisture content of the ore that feeds the different crushing stages. This must be measured and controlled to prevent the fine material from spilling or adhering to the chutes, conveyor belts or the different structures of the plant, causing unscheduled stoppages for cleaning tasks and thus generating operational discontinuity. Specifically, for Codelco División Andina the maximum design moisture content is 6% in order not to generate problems in the Conventional Crushing Line equipment.
Identify technological solutions to determine the total moisture and the fine fraction (-1/2 inch) of the material discharged from the primary crushing. The point considered for the measurement is the Sacrificial Conveyor, the characteristics of which are as follows:
Implement a new moisture measurement system for fine ore at the primary crusher discharge to replace the current system and ensure operational continuity.
Moisture in the fine ore is measured by hand instrument on the conveyor belt, downstream of the primary crusher, at a frequency of 8 times/day and with the crushing plant stopped for 10 to 15 minutes at each measurement.
No new technologies have been tested.