PS. Second Site

Owned by iarmstrong
Mar 08, 2023
5 min read

Second Site setup allows users to bring external movements from one APS model and incorporate into a Central APS model. This could be used when several sites are planned separately but provide joint feed to a common Central Processing Plant.

External Model Setup

The following steps are required to be completed on the External model, which is sending material to the Central model where the consolidation is happening.

This guide assumes that the entire site output is imported into the second site.
To do something more complex, contact your Alastri support representative or send your request to alastrisupport@micromine.com.

Fields

Ensure both projects have the same mining product fields in the Fields setup step.

Review Mining product fields in the Fields step

Processing Paths

Ensure both sites have the same processing paths (even if they are not used in the external model, they must be present) in the Processing Paths setup step.

Review Processing Paths fields in the Processing Paths step

Final Configuration

By default, APS will export periods as defined by the Calendar. Final Configuration step allows users to set the intervals to break up the material feed from External site to Central site.

Export Product Feed

Run the Schedule and select the Reporting tab. Click on Export Special button and select the product stream you want to export. This export will be used in the Central model to simulate an external feed source.

 

Make sure you are exporting in a relevant mode. It is recommended to export only from “Everything” mode, as the result from any other mode may not constitute a valid schedule.

The exported product feed will be saved in a selected directory as “.prodFeed” file.

Central Model Setup

The following steps are required to be completed on the Central model, which is receiving material from the External model for consolidation.

Production Mode Features

Enable the Import a product stream from another site for further processing in this model flag in the Production Mode Features step. This will enable extra setup step (Other Sire Feeds) for supporting an external feed source.

Site Lists

  1. In the Site Lists step add (or Populate from Haul Infinity) a Stockpile to act as an interim storage facility between the External site and the Central processing plant.

2. Create a Plant Component to move material from the interim stockpile to the crushing plant. This component is applied in the flow chart and is used to create a cashflow incentive to reclaim material from the interim stockpile.

3. Create the second site to use as External source.

Other Site Feeds

  • In the Other Site Feeds step select Parcel type to assign for the External feed source. If the feed has been blended at the External site, then parcel type will typically be assigned as “blend”.

  • Select Feed Release Time as a Start of End of a period.

  • Import the “.prodFeed” file that was exported from the External model.

Stockpiles

In the Stockpiles step set the Chunk Template to the Second Site name on the Second Site stockpile.

Flow Chart

Connect the Second Site stockpile to the final destination in the Flow Chart setup step.

Right-click on the newly created arrow and choose “Select Applicable Plant Components” option to select the second site plant component.

Flow Optimization

Create an Instantaneous Cash Flow incentive in the Flow Optimization step and apply it to the Second Site feed.

Add the Second Site stockpile to the haulage network. Note this will not use trucks unless the Flow Chart and Destination Rules require it.

Complete running APS setup and run schedule. Navigate to the Flow Chart tab and move the time slider to the Period end to review results.

Notes

  1. Tonnes from the External source will only become available at the end of the period in the import file. Meaning if the periods are too long, then the interim stockpile may go empty, and the crusher may go on standby.

  2. Tonnes will automatically flow from the interim stockpile to the crusher. There is no need for trucks and dig units, unless specified by the user.