TS Crusher Not Feeding

Owned by Gemma O'Farrell (Unlicensed)
Apr 28, 2021
3 min read

Resolve an instance where the crusher fails to feed.

Check 1: Haul Infinity > Network > Select the source and destination > Right Click > Show Return Route.

  • Check that there is a valid haul route between the pits and the crusher.

Check a valid haul route exists.

Check 2: Schedule > Calendar > Crushers > Capacity vs. Actual.

  • Confirm capacity exists.

Confirm crusher capacity exists.

Check 3: Schedule > Calendar > Constraints > Capacity vs. Actual.

  • Confirm capacity exists.

Check 4: Reporting > Pivot Tables > Source Parcel vs. Destination Top vs. Destination Logic Rule

  • Confirm ore is mined.
  • Confirm ore destination rule exists.

Confirm that ore is mined and evaluated correctly.

If not enough ore is mined, consider mining tonnes from different pits or benches.

Check 5: Setup > Destination Logic > Destination Rule.

  • Confirm ore rules list the crusher as a destination.


Confirm that the ore destination rule lists the crusher as a destination.

Check 6: (Product Optimised) Schedule > Calendar > Product Specifications > Grade/Blend limits.

  • Look for zeroed or contradicting grade limits, such as Minimum Fe greater than Maximum Fe.
  • Look for impossible blend targets, such as a Minimum Feed Ratio of a material that isn't mined or stocked.

Confirm that product specifications are present and correct.

Check 7: (Product Optimised) Schedule > Calendar > Product Specifications > Penalties.

  • Check for high penalties or negative cash flows.

Check for penalties or negative cash flows.

The optimiser may refuse to feed the crusher if the net grade penalty outweighs the crusher cash flow.

Net grade penalty =  (Content Deviation Penalty) * (actual grade - target grade) * 1000

Check 8: (Truck Constrained) Schedule > Calendar > Stockpiles > Reclaim Target.

  • Check that the movement isn't capped by the reclaim target.

Check 9: (Truck Constrained) Schedule > Setup > Stockpiles > Finger Pile properties.

  • If a stockpile is First In First Out (FIFO) or Last In First Out (LIFO), then it cannot be reclaimed until it hits the Finger Pile Size (unless you tick Finish Pile at Period End).

Check 10: Setup > Map Fields.

  • Make sure the correct grade values are mapped into the grade fields.