TS. Optimisation explanation

Owned by iarmstrong
Sept 19, 2023
3 min read

 

TBR

Overview

Mining vs Optimisation

 

User controls the Mining:

  • what is mined, where it is mined, how it is mined,

exclusive to anything within the Optimisation

<-> Cashflow and Grade Target have nothing to do with the Mining Sequence

 

For product-optimised transactions, ATS does not schedule a destination until the end of the period.

Once it knows all the ore that has been mined in the period, it decides what to do with it based on the Costs and Revenues applied to the Movement and Processing of the material. 

Dependencies and Incentives

Destination Logic and Steps Logic

Incentives

Introducing Cashflows

Waste Rule vs Crusher Feed Rule

Example

Example: Project has HG, MG, and LG. Reserves have a lot of MG and LG, so we need to incentivize feeding them where there is Grade Target of Fe > 58% and Si < 8% on the Crusher

Direct Tip:

  • Cash flow of $30 LG

  • Cash flow of $20 MG

  • Cash flow of $10 HG

Stockpiling where destination rules allow each parcel to go to any of the stockpiles:

  • Cash flow of $-10 ROM1

  • Cash flow of $-20 ROM2

  • Cash flow of $-30 ROM3

Reclaim:

  • Cash flow of $20 ROM1

  • Cash flow of $10 ROM2

  • Cash flow of $0 ROM3

Fleet hours & Overflow