Creating a circuit model

Creating a Circuit Model

A circuit model is part of a project that matches grinding testwork to circuit specific energy consumption models and mill power draw models. There are several types of circuit models available depending on the type of testwork and the nature of the grinding circuit being simulated.

Steps in creating a circuit model

A blank main menu for a project

From the main menu of the project you want to create a new circuit for,

1. Identify an unused circuit number that you want to use for this new circuit. If there are no circuit numbers in use, then choose "1" to make this the first circuit.
2. Create a new mill using these instructions. Enter the new circuit number in the 'circuit number' field in the mill.
   • Optional, continue adding mills (and pebble crushers) to the new circuit.
     

     The list of available circuit types for a new circuit
3. A new option will appear to "Show incomplete circuit #1". Click this link to bring up the list of available circuit types (see screenshot example).
   • The mills assigned to this new circuit are listed and can be edited (if necessary) via the links.
4. Choose an appropriate circuit model from the drop-down list. Note that the list does not validate based on your mill selection. Do not choose an "SABC" type circuit model if you haven't put a crusher in the circuit.

Choosing the right model

For a SAG and ball mill circuit:

• Use the Bond/Barratt SAB models if you have Bond work index test results (requires ball mill work index, rod mill work index and impact crushing work index).
• Use the SAB SMC models if you have SMC Mi test results (Mia and Mib).

For a SAG, pebble crusher and ball mill circuit:

• Use the Bond/Barratt SABC models if you have Bond work index test results (requires ball mill work index, rod mill work index and impact crushing work index).
• Use the Morrell SMC SABC models if you have SMC Mi test results (Mia and Mib).

For a SAG mill circuit (single-stage):

• Use the Bond/Barratt single-stage SAG model if you have Bond work index test results (requires ball mill work index, rod mill work index and impact crushing work index).
• Use the Morrell SMC single-stage SAG model if you have an SMC Mia test result.

For a rod mill and ball mill circuit:

• Use the Bond Rod/Ball model (requires Bond work index values for rod milling and ball milling)

For a single-stage ball mill circuit:

• Use the Bond/Rowland single stage ball mill model (requires Bond work index values for rod milling and ball milling)