Configuration

Once a component has been added to the Flowchart tab, additional information needs to be provided in the Configuration tab. The type of information required will depend on the component added.

The Configuration tab consists of three main elements: the Flowchart component list, the selected flowchart component, which will be highlighted and the Component related workspace. When a component is selected, the workspace is populated with fields related to that component for you to complete.

Flowchart components

Each flowchart component has a specific workspace for you to complete.

Pit (solid)

The following fields for each solid need to be set using attributes from the imported pit:

• Tonnes: Provide the attribute that best represents the maximum tonnes.

• Volume: Provide the attribute that best represents the maximum volume.

• Available to Mine Factor: Provide the attribute that best represents the availability of a solid.

Mill

The Mill tab allows you to configure several mill properties

You can set the following mill properties:

• Name. Provide a Name to the mill of your choosing. The default name is Mill <number>, where number represents the number of mills in the setup.

• Overflow stockpile — Overflow capacity. Enter the capacity of the stockpile adjacent to the mill, which is called overflow. The greater the overflow capacity, the more likely it is for material to be sent to it.

• Overflow stockpile — Reclaim type. You can select either of the following checkboxes:

  • Automatic. Select this checkbox to allow automatic reclaiming behaviour. If selected, Evolution will determine when to reclaim material from the stockpile, based on meeting blend targets and maximising equipment productivity. To meet this criteria, Evolution will assign equipment as needed for reclaim and will ignore any reclaim tasks defined in any tasks lists.

    Note:  This is the default behaviour for stockpiles.

  • Manual. Select this checkbox to only reclaim material from the stockpile based on reclaim tasks, defined in task lists. If you do not define any reclaim tasks in the task lists, no material will be reclaimed from the stockpile. For more information on task lists and creating reclaim tasks, see Create Task Lists.

• Blending Configuration — Enable Blend Target. Select this checkbox to set a blend target for the mill. You can then specify the desired target by selecting a pit attribute from the corresponding drop-down and defining the following:

  • Minimum. Set a minimum blending target for the final mined solid.

  • Maximum. Set a maximum blending target for the final mined solid.

Flow control node

The Configuration - Flow control subtab is used to define the Accumulation Rate Limits which are maximum rate at which material can be transferred from the pit to the specified destination. The Accumulation Rate Limits can be defined in terms of Tonnage or Volume per hour.

Once the setup has been evaluated, you can check whether the limit has been honoured using pivot reporting.

Troubleshooting

When checking whether the flow control rate has been enforced, there are a few competing rates which need to be considered - the mill productivity set in the Resource Groups > Single Coverage Appointments tab and the activity productivity rate set in the Activities > Duration Scripts tab. The flow control rate needs to be lower than both the mill productivity and the activity productivity rate in order to be enforced by the software.

Reserve stockpile

To configure a reserve stockpile, you can define the following fields:

• Volume. Provide an attribute from the imported reserve stockpile model which represents maximum volume for each unit of space (solid) within the model. An attribute for Volume must be provided for the configuration of the reserve stockpile model to be successful.

• Fill Factor. Provide an attribute from the imported reserve stockpile model which represents the fill factor for each unit of space (solid) within the model. An attribute for Fill Factor must be provided for the configuration of the reserve stockpile model to be successful.

• Stage Override. Optionally, you can override the default, imported stage attribute. You can use the drop-down to select an alternative stage attribute.

• Allow stockpile redirect checkbox. Select this checkbox if you want to allow stockpile redirect behaviour. If allowed, material that is otherwise determined to be transferred to the stockpile, will be sent to the mill, if the mill capacity hasn’t been reached.

• Reclaim Settings ⁠— Type. You can select either of the following checkboxes:

  • Automatic. Select this checkbox to allow automatic reclaiming behaviour. If selected, Evolution will determine when to reclaim material from the stockpile, based on meeting blend targets and maximising equipment productivity. To meet this criteria, Evolution will assign equipment as needed for reclaim and will ignore any reclaim tasks defined in any tasks lists.

    Note:  This is the default behaviour for stockpiles.

  • Manual. Select this checkbox to only reclaim material from the stockpile based on reclaim tasks, defined in task lists. If you do not define any reclaim tasks in the task lists, no material will be reclaimed from the stockpile. For more information on task lists and creating reclaim tasks, see Create Task Lists.

• Reclaim Settings ⁠— Material Flow. Select the reclaim mode from the following options:

  • First In First Out. Select this checkbox to ensure that the first solid sent to the stockpile, is the first solid to be reclaimed. Evolution will select this option by default.

  • Last In First Out. Select this checkbox to ensure the last solid sent to the stockpile, is the first solid to be reclaimed.

Virtual waste dump

A virtual waste dump only needs its Capacity defined.

Reserve waste dump

To configure a reserve waste dump, set the following fields:

1. Volume: Select the attribute from the imported reserve waste utility, that best represents the maximum volume for each unit of space within the reserve waste utility.

2. Fill Factor: Select the attribute from the imported reserve waste utility, that best represents the fill factor for each unit of space within the reserve waste utility.

3. Areas: Provide a waste definition for each area defined in the imported reserve waste utility. This definition determines the type of material that the waste utility can accept. For example, if the waste definition for Area 1 is set to the following:

parcel.name = "Waste Parcel"

This means that only the proportion of material that is classified as “Waste Parcel” can be sent to Area 1 in the reserve waste utility. If the waste definition is left blank, this means that all material can be sent to the specified area.

You can also set the waste definition for the entire waste utility using the Resources > Resource Groups > Waste Utilities tab.