Creating/modifying a mill

Entering/changing a mill

Mills are added to projects, and then circuits are created out of combinations of mills. See the section on Creating a project to create a project to add a new mill to.

For the purposes of the model, a crusher is considered a special type of mill. Adding a crusher is the same as adding a mill. Primary gyratory (or jaw) crushers are not part of the modelling because all Power Models start with a feed F₈₀ size that is assumed to be primary crusher discharge.

Entering a new mill

From the project menu, click the [Add new mill to circuit] link at the bottom of the page. This will bring up a page containing a series of pre-configured mills that are grouped into the categories of SAG, Ball Mills and Crushers. Click the category of mill you want to add.

The list of pre-configured mills will appear. Choose the mill that is closest to your desired size. The editing page for that mill will appear with the edit mode pre-selected to "duplicate". Continue with the instructions to change a mill.

Changing an existing mill

The list of attributes that can be modified on the mill editing page is different for each mill power draw model.

If you chose to change the model type, clicking the 'Submit' button will cause the settings for the old model to be saved, then the page refreshes with the settings appropriate for the new type of model. Some items may be blank if a particular attribute of the new model did not exist in the old model.

Adding a mill to the default list

The list of default mills (those that appear in the "Add new mill to circuit" menu) is actually "Project number 0". Duplicating an existing mill and giving it 0 as the "project number" makes that mill appear in the default list.

Editing a mill on the default list

• Edit a mill
• Set the "project number this mill belongs to" to "0"
• Set the mill to "update this entry"
• Press "submit"