Wash plant configuration fields

Field	Description
Name	The name of the wash plant node.
Rate	The rate at which the plant processes input material in mass/hour.
Override per Shift (General)	Option to override the wash plant Rate on a shift basis.
Objective	The objective rule the PO will attempt to satisfy.
Target Type	The target type used by PO. Quantity: use one or more wash qualities for the PO target. If multiple targets are used, PO will use the lowest cut-point to meet the target. See Wash Field. Qualities targets can be overridden on a shift basis. Cut-point: uses the default relative density as entered in the Relative Density > Default field as the PO target, or use override shift values. Optimised Cut-point: allow PO to set the cut-point to meet overall material flow benefits.
Target Match	The method PO will use when attempting to optimise the Target Type. Nearest: the cut density where the absolute difference between the quality value at either bound and the target quality value is lowest. Interpolate: the exact cut-point required to meet the target is determined by using a cut-point above and below the target, then using a straight line average (assuming that all wash data is linearly related).
Change Theoretical Wash Table	Use to adjust the theoretical wash curves to achieve a practical yield to account for any misplaced material, such as material that floats but should have sunk and vice versa. No Change: no adjustment is made for the misplaced material and the New Theoretical Yield Expression row will be disabled. Use Qualities at RD Cut-point: The quality of the misplaced material will be the qualities of the material that floats at the current RD, but would have sunk at the previous RD. The wash table is then adjusted accordingly to take into account the 'good' material that will sink. Use Float Qualities: the quality of the misplaced material will be the average qualities of all coal that floats at that particular RD. The wash table is then adjusted accordingly to take into account the 'good' material that will sink.
New Theoretical Yield Expression	The yield expression to use if enabled by the Change Theoretical Wash Table setting.
Interpolation Correction	How to manage the cut-point returned by PO (the cut-point used in the wash table). No RD Connection: do not adjust the relative density value used to achieve the PO target. Clamp RD to Limit: use the nearest RD limit value (upper and lower) in the wash curve if the PO cut-point is outside these limits. Set RD to Default: use the supplied default vale if the PO cut-point is above or below the limit values.
Upper Limit	The upper RD limit to use in interpolation rules.
Default	The default RD to use in interpolation rules.
Lower Limit	The lower RD limit to use in interpolation rules.
Override Per Shift (Relative Density)	Override the RD limit values on a shift basis.
Wash Field	The wash quality field for PO to target.
Override Per Shift (Quality Target)	Override the wash quality targets on a shift basis.

Name

The name of the wash plant node.

Rate

The rate at which the plant processes input material in mass/hour.

Override per Shift (General)

Option to override the wash plant Rate on a shift basis.

Objective

The objective rule the PO will attempt to satisfy.

Target Type

The target type used by PO.

Quantity: use one or more wash qualities for the PO target. If multiple targets are used, PO will use the lowest cut-point to meet the target. See Wash Field. Qualities targets can be overridden on a shift basis.

Cut-point: uses the default relative density as entered in the Relative Density > Default field as the PO target, or use override shift values.

Optimised Cut-point: allow PO to set the cut-point to meet overall material flow benefits.

Target Match

The method PO will use when attempting to optimise the Target Type.

Nearest: the cut density where the absolute difference between the quality value at either bound and the target quality value is lowest.

Interpolate: the exact cut-point required to meet the target is determined by using a cut-point above and below the target, then using a straight line average (assuming that all wash data is linearly related).

Change Theoretical Wash Table

Use to adjust the theoretical wash curves to achieve a practical yield to account for any misplaced material, such as material that floats but should have sunk and vice versa.

No Change: no adjustment is made for the misplaced material and the New Theoretical Yield Expression row will be disabled.

Use Qualities at RD Cut-point: The quality of the misplaced material will be the qualities of the material that floats at the current RD, but would have sunk at the previous RD. The wash table is then adjusted accordingly to take into account the 'good' material that will sink.

Use Float Qualities: the quality of the misplaced material will be the average qualities of all coal that floats at that particular RD. The wash table is then adjusted accordingly to take into account the 'good' material that will sink.

New Theoretical Yield Expression

The yield expression to use if enabled by the Change Theoretical Wash Table setting.

Interpolation Correction

How to manage the cut-point returned by PO (the cut-point used in the wash table).

No RD Connection: do not adjust the relative density value used to achieve the PO target.

Clamp RD to Limit: use the nearest RD limit value (upper and lower) in the wash curve if the PO cut-point is outside these limits.

Set RD to Default: use the supplied default vale if the PO cut-point is above or below the limit values.

Upper Limit

The upper RD limit to use in interpolation rules.

Default

The default RD to use in interpolation rules.

Lower Limit

The lower RD limit to use in interpolation rules.

Override Per Shift (Relative Density)

Override the RD limit values on a shift basis.

Wash Field

The wash quality field for PO to target.

Override Per Shift (Quality Target)

Override the wash quality targets on a shift basis.