Destination Throughput/Recovery

To access this dialog:

In the Scheduling Setupdialog, select any of the items in the Destinations menu group, including existing destinations. Select the Throughput/Recovery tab.
In the Update Schedule dialog, select the browse button next to Destinations (restricted menus system, limited functionality will be available). Select the Throughput/Recovery tab.

Situations can occur where something which is fast to process has a low recovery value and something which is slow to process has a high recovery value – this is where the blender is used to then work out how much of the slow high recovery should be sent compared to how much of the slow low recovery. The Throughput and Recovery columns within the reserves should be set to ‘Weighted by Tonnes’.

The Throughput/Recovery tab is used to define optional material throughput and recovery settings for a Normal destination.

These parameters are only available for Normal destinations i.e. destinations where mined material is processed e.g. crushers, plants, leach pads. All of these destinations will appear under the Processes item in the menu system on the left.

These settings are not available for Stockpiles and Dumps.

These settings are used by the blender and the Recovery Settings are used by the blender and partially by targets.

Example: Throughput and Recovery Settings

If there are two categories going to the plant, for example HGO (high grade ore) and HGS (high grade ore with sulfur) and HGO throughput is set to 800tph while HGS is set to 500tph, even if the plants processing capacity is 1000tph, it will be restricted to processing only 500tph of HGS.

If a mix is sent to the plant it could process, for instance, 400 HGO and 250 HGS to meet its hourly quota. In addition, if the AU within HGO had a recovery rate of 60% and the AU within HGS had a recovery rate of 40%, by processing HGO, the plant would recover 60% of the gold within that ore category e.g. if the material has an AU grade of 10 (grams per ton) then the plant would recover 6 grams per ton instead of 10 with the recovery value set.

Field Details:

Throughput Settings: enable this to define optional throughput settings; these are used to adjust the time taken for the plant to process certain ores.

For instance, a low sulfur gold ore might be quicker to process than a high sulfur gold ore as there are less impurities to be removed.

By Column: select this option, select a data column from the dropdown list.

This is typically a numeric, user-defined attribute and needs to be present in the Block Reserves (Results) table.

As an example, a data column TPH (containing 'tonnes per hour' values, one for each evaluation category within each mining block) could be selected to control throughput to the selected Normal destination.

Rate:

Tonnes: select this option to define the throughput rate by material mass.

Volumes: select this option to define the throughput rate by material volume.

Number of Rate Units : enter a value for the number of rate units.

Rate Time Unit: select a rate time unit from the dropdown.

Recovery Settings: tick the checkbox to define optional processing recovery settings; these are used by targets and the blender to enhance the solution found. It is set in the same way as throughput i.e. from a column in the reserves table and defines the percentage material is recovered.

By Column: select this option, select a data column for each controlling Element, using the dropdown lists.

This is typically a numeric, user-defined column and needs to be present in the Block Reserves (Results) table.

As an example, a data column AUREC (containing processing recovery values in % i.e. values range from 0 to 100) associated with the Element field AU, could be selected control throughput to the selected Normal destination.

Rate: define the throughput/recovery rate to be adopted:

Tonnes: select this option to define the throughput rate by material mass.

Volumes: select this option to define the throughput rate by material volume.

Number of Rate Units : enter a value for the number of rate units.

Rate Time Unit: select a rate time unit from the dropdown.

See Blending Using Additional Constraints for an overview of how to use these Throughput and Recovery options when blending.

	Related Topics
	The Schedule Data Setup Dialog About Destinations General SettingsMaximum Capacity LimitsProcessing Capacity Limits Destination Constraints Destination General Costs